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Crutchfield

Infinity Primus PC351

Center channel speaker

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Our take on the Infinity Primus PC351

by Kristen Schaub
Infinity

Your home theater's most important speaker

The center channel speaker is the workhorse in a home theater system. It has to reproduce clear dialogue and special effects that keep your eyes and ears glued to the movie action. A high-quality center speaker is a great investment for any surround sound setup. Try to choose one that's as closely matched as possible to your front right and left speakers, so that as sound moves across the front stage, it stays seamlessly realistic.

Your ears will thank you when you add Infinity's Primus PC351 center channel to your home theater system. It uses five separate drivers to produce the kind of clear, accurate dialogue and special effects that make movies and TV shows come to life. It's all thanks to a combination of Metal Matrix Diaphragm® driver technology and a low-resonance enclosure, which help this speaker produce sparkling high frequencies and detailed midrange at any volume level.

Infinity's exclusive Metal Matrix Diaphragm drivers
The Primus PC351 features Infinity's exclusive Metal Matrix Diaphragm ("MMD" for short) driver technology in the 3/4" tweeter, both 3" midranges, and both the 5-1/4" woofers. These MMD drivers consist of a stiff aluminum core, anodized on both sides for increased strength and rigidity. The result is extremely fast, extremely accurate response — you'll hear distinctly cleaner, more realistic sound, even at higher volume levels.

Build your own Primus® system
The Infinity Primus PC351 will fill just about any room with dramatic and well-defined sound. Pair it with Infinity's P363 floor-standing speaker or P163 bookshelf speaker to create a stunning Primus home theater system. And don't forget to add the perfectly matched PS38 powered subwoofer to get deep, accurate bass in the mix.

Got wire?
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Shop our selection of speaker wire.

Highlights:

  • frequency response 80-20,000 Hz (±3dB)
  • handles up to 150 watts
  • sensitivity 91 dB
  • 8-ohm impedance
  • Metal Matrix Diaphragm® drivers minimize distortion
  • 3/4" MMD dome tweeter
  • dual 3" MMD midranges
  • dual 5-1/4" MMD woofers
  • magnetically shielded for safe placement next to older tube TVs
  • acoustic suspension (sealed) design
  • black woodgrain vinyl finish
  • 5-way binding posts
  • 23-3/4"W x 7-3/8"H x 9-11/16"D
  • weight: 25 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee
 

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Enclosure
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Acoustic Suspension
Tweeter
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Dome
Midrange size (inches)
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3
Woofer size (inches)
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5-1/4
Connector Type
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5-way post
Power Range
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10-150
Sensitivity
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91 dB
Impedance (Ohms)
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8
Frequency Response
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80-20k Hz
Height (inches)
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7-3/8
Width (inches)
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23-3/4
Depth (inches)
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9-11/16
Weight
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25 lbs
Parts Warranty
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5 Years
Labor Warranty
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5 Years
Product Research
What's in the box?

Download owner's manual

  • Black center channel speaker
  • Black grille (removable)
  • 4 Self-adhesive rubber feet
  • Owner's Guide
  • Warranty sheet

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Driver Technology
Enclosure Design
Connections

Driver Technology

Metal Matrix Diaphragm (M.M.D.): Derived from the C.M.M.D. material used in Infinity's flagship Cascade series, M.M.D. features a stiff aluminum core, anodized on both sides for increased strength and rigidity. M.M.D. transducers conduct sound faster than paper, polypropylene, and Kevlar, pushing unwanted resonances beyond the operating range of the transducer. M.M.D. drivers deliver crystal-clear, distortion-free sound from dynamic digital sources, even at high listening levels.

5-1/4" Woofers: The dual 5-1/4" M.M.D. cone woofers offer extremely accurate lower midrange response for cleaner, more realistic sound. For a smoother response and improved durability, the woofers use rubber surrounds.

3" Midranges: The PC351 has dual 3" M.M.D. cone midranges for full, accurate upper midrange sounds. The mids also use rubber surrounds.

3/4" Tweeter: The speaker has a 3/4" M.M.D. dome tweeter that offers superior stiffness and damping compared to traditional metal domes.

Acoustical Waveguide: The PC351's tweeter utilizes an acoustical waveguide to deliver, more even high frequency response, no matter what part of the room you're in.

Precision Crossover Network: The speaker features a 3-way crossover system with crossover frequencies at 650Hz and 2800Hz. The crossover has a 24dB/octave slope.

Matching System: The PC351 is voice-matched to all the speakers in the Primus line, so a complete matching system can be built.

Enclosure Design

Wood Grain Vinyl Cabinet: The Infinity PC351 features a black wood grain vinyl cabinet that matches almost any decor.

Acoustic Suspension Design: The Infinity center channel utilizes an acoustic suspension (sealed) enclosure for tight, accurate midbass performance.

Low Resonance Enclosure: The PC351 employs a extremely low resonance enclosure, so you hear the music exactly as it was recorded.

Grille: The speaker comes with a removable black cloth grille with a rigid plastic frame.

Connections

5-Way Binding Posts: The 5-way binding posts will accept bare wire, pin connectors, spade connectors, banana plugs, and dual banana plugs.

Color-Coded: The speaker's binding posts are color-coded (red/black) for easy identification between positive and negative.

 
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Infinity Primus PC351 Reviews

Average Customer Review:

54 people say:

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5 out of 5

Amazing Center Speaker

Written By Christopher M., Connecticut on Monday, July 07, 2014
 
I purchased this unit to integrate with my Infinity Primus bookshelf speakers and subwoofer. The sound is amazing. I'm hearing things much clearer and viewer focused than with the just the front speakers. It completely changed my home theater system. I would highly recommend adding a center channel to those who don't have one yet.

The speaker is big, so if you're limited on space you may want to reconsider another speaker model. I made it work by placing it on top of a TV stand (which is on top of a dresser). The dimensions for that stand are 15.8 x 23.6 x 9.2 inches and weighs 15.8 pounds. The max weight limit is rated at 60 lbs. The speaker fits perfectly on the top shelf, with my receiver on the bottom.

Hope this helps someone!
Pros:
 Sound  Solid build quality
Cons:
None.
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5 out of 5

Infinity Primus PC 351

Written By Richard, Mass on Saturday, June 28, 2014
Crutchfield Customer Review (What's this?)
 
Crisp sound helps with those movies that you can't seem to hear all the voices.
Pros:
You can never go wrong with Infinity
Cons:
Extremely large
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5 out of 5

CENTER CHANNEL SPEAKER

Written By TVW, NC on Sunday, June 01, 2014
Crutchfield Customer Review (What's this?)
 
DEFINITELY IMPROVED ABILITY TO UNDERSTAND DIALOG IN MOVIES
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5 out of 5

This center speaker changed everything

Written By Duck Bill, Eugene, OR on Monday, May 05, 2014
Crutchfield Customer Review (What's this?)
 
This center speaker changed every listening experience, from LP records, Pandora, TV, and movies. It replaced what I thought was an OK center speaker. It matched up perfectly with my Bose 301 fronts, 201 rears, and 161 upper front speakers. This Infinity 351 brought my entire system to a higher level. It is big and heavy, and I did need to replace my home theater cabinet, so know the measurements first.
Pros:
Sound enhancement to every audio performance.
Cons:
None.
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5 out of 5

Infinity Primus PC351

Written By Anonymous, Dallas TX on Friday, May 02, 2014
Crutchfield Customer Review (What's this?)
 
Very good Speaker
2 out of 2 people found this helpful
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4 out of 5

Excellent upgrade

Written By Matt W, Denham Springs, LA on Monday, April 28, 2014
Crutchfield Customer Review (What's this?)
 
Excellent addition to our system. Will be adding towers & powered sub of the same line. Thanks!!
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5 out of 5

Infinity Primus PC351

Written By 1cleverchef, SC on Friday, April 25, 2014
Crutchfield Customer Review (What's this?)
 
This is probably one of the best center speakers you can get, I have an old JBL Northridge 5.1 set up. The center was a 3 way and not bad, but it was starting to look rough. When I first hooked this up the center channel seemed to overpower the volume from my 125w. front speakers. I had to re-run room calibration which my Denon receiver has, other wise you may need to adjust the output volume to center channel. The center channel is a pretty important part of your 5/7.1 setup, a good center speaker should be considered. The item was on sale, still kind of pricey but worth it I think..
Pros:
Full rich sound in a center channel speaker with 2 woofers, mid-ranges and a tweeter.
Cons:
Pricey and it's a bit big (long mainly) and heavy, check your measurements.
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5 out of 5

This is special...

Written By IanB, Montgomery, IL on Friday, April 18, 2014
Crutchfield Customer Review (What's this?)
 
First off, the previous speakers that I have been replacing were JBL and decent on there own... I use this center channel with the matching Primus 363's and 4 in-wall CS-60's. My father in law has a very expensive Paradigm system and this sounds every bit as good if not better.
Pros:
Clarity Crisp Diverse Sound Field Tonal Match when paired correctly
Cons:
It is quite bit, and there for a bit difficult to place.
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5 out of 5

Infinity Primus PC351

Written By Anonymous, Wisconsin on Sunday, April 13, 2014
Crutchfield Customer Review (What's this?)
 
Best speaker I've ever bought....now just have to get the other ones to complete the set
Pros:
Sounds and looks great
Cons:
Big speaker but not a huge issue....
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5 out of 5

center spkr

Written By Bob F, Draper UT on Friday, March 07, 2014
Crutchfield Customer Review (What's this?)
 
sounds great
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5 out of 5

Dress it up/Dress it down!

Written By The Crutcher, Lake Forest, illinois on Friday, February 14, 2014
Crutchfield Customer Review (What's this?)
 
Like most everyone else, I love this center speaker! It has the ability to both steal the show when important dialogue goes through it's reigns but knows when to play second fiddle when the surround needs to do its thing! Best of all, the versatility of this product enables it to be paired with higher end systems in addition to quality cost effective systems.
Pros:
Wonderful sound quality, perfect for the center channel.
Cons:
It's pretty big (is that a bad thing?), make sure you allow for its size.
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5 out of 5

Clarity and Presence that you need.

Written By Mike, New Berlin, WI on Monday, February 10, 2014
Crutchfield Customer Review (What's this?)
 
Bought this around black friday with a pair of 363's due to great sale price and then added two more 363's to complete my unexpected upgrade thanks to another price break elsewhere. After 2 months of use for TV, Blu-Ray, Radio, Internet radio, and other various media, I can say this is the best move I ever made. Onkyo 709 is what anchors my living room HT system and the difference from the Onkyo 960 speakers which are about 7 years old was undeniable. If you ever wanted to actually hear all of the vocal details and have hearing loss (I teach percussion) then you will be amazed at what you've been missing. A full and warm soundstage without needing to crank up the volume is the reward. I couldn't be happier that I decided to make another jump in re-building my home theater and will absolutely buy this center channel again for my second receiver in the other entertainment room instead of being satisfied with the Onkyo speakers.
Pros:
Looks and sounds great.
Cons:
WAF may vary due to the size of the center channel until she hears the difference.
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5 out of 5

Infinity Primus PC351 Review

Written By JD, Baton Rouge, La on Tuesday, January 28, 2014
Crutchfield Customer Review (What's this?)
 
The sound quality is incredible and it actually looks nice, too. It doesn't look out of place at all.
Pros:
Sound quality Appearance
Cons:
None
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5 out of 5

primus pc351

Written By Jeff D, Oakdale, NY on Friday, January 24, 2014
Crutchfield Customer Review (What's this?)
 
I replaced an older, smaller center channel infinity speaker. All I can say is...Wow. I had no idea what I was missing in movies. The sound was incredible and crystal clear. It's one those things you have to hear for yourself as nothing I can say will do it justice. Be warned this speaker is huge but, well worth it.
Pros:
Crystal clear sound, powerful
Cons:
Big so it might not fit all entertainment centers, measure first.
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5 out of 5

Excellent value for money

Written By Matt, New York on Friday, January 03, 2014
Crutchfield Customer Review (What's this?)
 
This replaces my Boston acoustics center channel. Drastic improvement of sound quality and detail over the B A center channel. The center channel on my second HT is an Infinity CC3 that I have always liked a lot. This speaker sound even better than the CC3. Excellent value for the price I paid.
Pros:
superior sound quality and very good detail.
Cons:
Not a big issue, but this is not a tiny speaker. Be prepared for the size and weight..
1 out of 1 people found this helpful
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4 out of 5

Nice addition!

Written By Hank J., Thomson, GA on Thursday, January 02, 2014
Crutchfield Customer Review (What's this?)
 
The addition of this center channel has brought out details which were missing with my previous setup. Voices are crisp and clear, making for a much more enjoyable listening experience.
Pros:
Clarity Sale Price
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5 out of 5

Very happy!

Written By bman, Warren, MI on Thursday, December 26, 2013
Crutchfield Customer Review (What's this?)
 
This center channel speaker is a huge improvement over my older Yamaha. The sound range is significantly more clear and powerful. For the price, I did not expect to be that impressed, I just wanted an improvement. I actually had to tone the center channel down so it didn't overwhelm the rest of my channels! Great product!
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5 out of 5

INFINITY PRIMUS PC351

Written By STEVEP, ROCHESTER HILLS, MICHIGAN on Tuesday, December 24, 2013
Crutchfield Customer Review (What's this?)
 
EXCELLANT CENTER CHANNEL SPEAKER. CAN HEAR DETAILS IN THE SOUND REPRODUCTION THAT WERE NOT THERE BEFORE. FAR SUPERIOR THEN THE ENERGY CENTER SPEAKER IN SOUND QUALITY THAT I HAD BEFORE AND BETTER THEN KILPISH CENTER CHANNEL SPEAKER I TRIED FOR TWO DAYS.
Pros:
EXCELLANT SOUND REPRODUCTION, STURDY AND EYE APPEALING CONSTRUCTION
Cons:
NEED SPACE FOR PROPER PLACEMENT OF SPEAKER
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5 out of 5

Infinity Primus PC351

Written By Bob G, Maple Grove, MN on Friday, December 20, 2013
Crutchfield Customer Review (What's this?)
 
Great quality sound and as always good service.
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5 out of 5

Infinity Primus PC351

Written By Dale, Wise Va on Thursday, November 07, 2013
Crutchfield Customer Review (What's this?)
 
I just received my new center channel , its awesome , full rich sound , deep bass , and its loud !!!! Im sorry to say that im replacing my Bose VCS 110 center channel speaker , the Infinity CC blows it away , ive never heard so much sound coming from a center channel speaker before . I got it at a great price , its a scratch and dent , but i dont see a scratch or dent on it , Im using it with an Onkyo 850 watt HD receiver and it matches very well with my other 10 Bose speakers and two Klipsch 350 watt subs , and as always Crutchfield is so easy to deal with , great service and great prices !!!
Pros:
A great sounding speak at a great price !
Cons:
Its a little bigger than i expected , but i just raised my tv a few inches .
2 out of 2 people found this helpful
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5 out of 5

Awesome CCS

Written By Brrett, Phoenix, AZ on Friday, October 11, 2013
Crutchfield Customer Review (What's this?)
 
This is the best CCS I have ever owned. Sounds better than my Polk CS-20 and Klipsch RC-62. Have it matched up with the Primus P363's up front and P163's for rears. Sub is PS312. Voices are crystal clear. I can hear everything, including background sounds I have never heard before.
Pros:
Sound quality. Blends perfectly with P363's creating the best front sound stage I have ever heard.
Cons:
Larger than most. Make sure you have room.
1 out of 1 people found this helpful
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5 out of 5

Fantastic, for the price

Written By Bill, Levittown, PA on Friday, October 04, 2013
Crutchfield Customer Review (What's this?)
 
I bought these not as a center, but as a pair for stereo fronts. They are fantastic. But there is a catch, see 'cons' below. I've heard a good number of speakers and bought into Infinity long ago, the very moment I walked into a friends living room "I just knew". That was many years ago, and they have not, ever, disappointed since.
Pros:
They just don't make better drivers, anywhere. I've heard about a dozen different Inifnity systems, they all sound about the same... Nearly perfect. For this price, I doubt you can do any better no matter how hard you try.
Cons:
Getting a good price. They are all over the place. I paid $199 each on Crutchfield a week ago, now $279. Huge price range, shop around, seriously. On the speakers there is an audble resonance. I pick it up in seconds 10-15 of Fun's "Some Nights". BUT, remember... $199. So, fix them with the mods on the net focused on Infinity's PC363 towers. That should put you in the $2600 a speaker range may friend paid for his speakers. We compared my fixed PC351's with his, and we could tell the dif
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5 out of 5

Very good center channel

Written By Boss304, Ellendale MN on Thursday, September 26, 2013
Crutchfield Customer Review (What's this?)
 
I have gone through a ton of different speakers in my setup. This is currently replacing a Bose VCS 10, wow what a difference. A lot of people worry about pairing different speakers in their setups, but honestly this one is paired with JBL 310nd's and Polk Monitor 70's and blends very well. The sound is crisp and clear, and has given a great center stage experience. Crutchfield introduced a price drop on this item two days after I bought it and reduced the price to match. Amazing company! Every time I call, I talk to a very nice knowledgeable person.
Pros:
Excellent sound quality, center stage experience for a great price.
Cons:
None
1 out of 1 people found this helpful
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5 out of 5

Infinity primus pc351

Written By Kaytay, 45040 on Monday, September 02, 2013
 
I have own 4 center speakers in my life, 1st being Boston acoustic, which i give 3.5 stars, 2nd being bose, also 3.5 stars 3rd being klipsch 4.5 stars , klipsch would have gotten 5 stars if it was more efficient at lower volume levels and 4th and final infinity 5 stars due to the over all natural detailed sound that this center channel produces, i have had the same onkyo power running to all these center channels and have finally found the most impressive sound from the infinity
Pros:
Clarity, at low or high volumes
Cons:
On the big side for some people when it comes to a center channel
5 out of 5 people found this helpful
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5 out of 5

Great center channel

Written By Seth P, DFW, TX on Saturday, August 17, 2013
Crutchfield Customer Review (What's this?)
 
This is a great quality speaker at a great price. I did pay a bit less than the price shown at the time of writing this review. I purchased this for my brother and he is using it as his only speaker, poor guy, he does have a subwoofer as well but I'm shocked how well it sounds in this setup. I have it for my media room which is a 7.2 setup and it is great.
Pros:
Great sound, good price, great range of sound
Cons:
very little bass, but that is what a subwoofer is for; it is large; I don't like how the cover is, but I'm not looking at when I am watching movies
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5 out of 5

Infinity PC351

Written By Stepheb, Boyers, PA on Thursday, June 27, 2013
Crutchfield Customer Review (What's this?)
 
Simply BANGING!. I have been sitting on the fence forever to purchase a center channel speaker for my 'wall of sound', and when I did, I did it right. This CC speaker is amazing.....!!!
Pros:
All
Cons:
none
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5 out of 5

infinity primus pc 351

Written By Xraystang, Durham NC on Wednesday, June 19, 2013
Crutchfield Customer Review (What's this?)
 
This is the best center channel speaker for the money. Great sound and no distortion.
Pros:
great sound
Cons:
a little on the large size
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5 out of 5

Primus PC351

Written By Jose, Puerto Rico on Tuesday, June 11, 2013
Crutchfield Customer Review (What's this?)
 
Great quality and sound
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5 out of 5

Great sound, great product

Written By Anonymous, Albuquerque, NM on Friday, May 31, 2013
Crutchfield Customer Review (What's this?)
 
We got this speaker to complete out our sound system to get that full sound effect without blasting the TV. So far we have loved it! Not only can we hear everything on the TV we don't have to keep the sound high up so the neighbors can hear us in our home. Great unit for sure!
Pros:
Love everything about it, easy to install, set up to our Denon Receiver with no issues, great sound.
Cons:
Haven't found any so far.
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5 out of 5

Center speaker

Written By Andres, Falcon Heights, TX on Monday, April 29, 2013
Crutchfield Customer Review (What's this?)
 
Excellent quality sound, including at max volume, which is actually very loud!
Pros:
I think this speaker could make a home theater on its own!
3 out of 3 people found this helpful
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4 out of 5

Very good.

Written By Dan, Antigo, WI on Wednesday, April 24, 2013
Crutchfield Customer Review (What's this?)
 
Very pleased with the power and clearity of sound. Really brings the dialogue to the forefront, even amongst loud sound effects. Don't look at the absence of a 5 star rating as a detractor, as I only give those ratings to products that are arguably the best of their type. This is a tremendous value for the money.
4 out of 4 people found this helpful
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5 out of 5

Infinity PC351BK Center channel speaker

Written By Thundergod, San Diego, CA on Tuesday, April 16, 2013
Crutchfield Customer Review (What's this?)
 
The PC351BK was purchased to replace a Dayton CCS-33 3-way Center Speaker. Wow! What an incredible difference in clarity, presence, and overall tonal quality. Now, I hear what prior reviewers stated about this speaker. My system is based on an Onkyo 7.1 with a mixed speaker setup; Sony front floor-standing, Dayton mini-surrounds, Infinity center, and Polk sub. Using various audio modes; Stereo, Neo 6, PLII, THX, I can color music and movies to bring realism to my soundstage. With the PC351BK, watching a movie, I can clearly hear dialog, all while bullets streak across the room, shell casing bouncing off concrete floor, an horrific explosions rumbling in the background. The PC351BK is an amazing speaker. Sure it is big and a bit heavy, but it does an excellent job. My wife use to complain about not hearing the actors voices clearly without having the volume turned up loud. Now, with the PC351BK, even the softest voices come through at a nice clear level. In the future, I plan to acquire the matching Infinity speakers. My thinking is if the Infinity PC351BK sounds this good with a mixed bag of speakers, then it must sound incredible with matched Infinity speakers all around. I highly recommend the Infinity PC351BK center speaker for any home theater system.
Pros:
The PC351BK's black cabinet/grille blended perfectly with my black-shelved glass console and all black components.
Cons:
The speaker wire attachment posts and position aren't in the best position. I had to use spade lugs, rather than push-in plugs.
5 out of 5 people found this helpful
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5 out of 5

Great center speaker.

Written By LarryB, Georgetown on Tuesday, April 02, 2013
Crutchfield Customer Review (What's this?)
 
I just love this center speaker.
Pros:
Great sound at a low low price.
Cons:
It's big.
1 out of 2 people found this helpful
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5 out of 5

I wish i did it sooner

Written By Chris, Chicago, IL on Friday, March 29, 2013
Crutchfield Customer Review (What's this?)
 
i don't have much too compare to but i can honestly say it sounds awesome with a Onkyo 135watts/ channel home theater with a Polk RTi12 fronts. I was afraid i wasn't spending enough money but the sound is incredible. i counld't or wasn't willing to spend over a grand on Klipsch RC64s, but i thought i had to-NOT SO MUCH. this center is doing the work and it only cost a fraction. i was running an older Boston center and now i know what i was missing, almost everything in all the movies i watched. don't make the same mistake and just buy it.
Pros:
price and quality, sound
Cons:
size, either too small or too large depending on placement
7 out of 7 people found this helpful
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5 out of 5

Great Product

Written By Preston, Woodland, Washington on Wednesday, March 27, 2013
Crutchfield Customer Review (What's this?)
 
This is an incredible speaker the clarity of the voice in this is wonderful.
Pros:
Everything. Just high quality technology.
Cons:
None!
1 out of 1 people found this helpful
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5 out of 5

Excellent sound & value

Written By Anonymous, East Coast on Thursday, March 14, 2013
Crutchfield Customer Review (What's this?)
 
I wish I had gotten this unit sooner. It looks good, sounds great, and appears to be very well made. It's larger than most center-speakers I've seen, and it needs a little extra space.
Pros:
Excellent sound & value.
Cons:
None that I can see.
1 out of 1 people found this helpful
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5 out of 5

Infinity Primus PC351

Written By BabyLo Production, Tx on Tuesday, March 12, 2013
Crutchfield Customer Review (What's this?)
 
Infinity has the best speakers
Pros:
awesome soung quality
Cons:
none
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5 out of 5

Infinity Primus PC351

Written By DanK, Buckeye, AZ on Monday, January 21, 2013
Crutchfield Customer Review (What's this?)
 
Excellent center channel characteristics. Sounds great, very happy with purchase
Pros:
none
Cons:
Large dimensions, if it fits you like the sound.
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5 out of 5

Very pleased with this purchase

Written By Mimo, West Caost on Monday, January 14, 2013
Crutchfield Customer Review (What's this?)
 
Very please with this speaker. It replaced my center speaker that came with Onkyo home theather package. I manilny bought this to improve clarity of dialogues when watching movies or TV and it is superb compared to the original Onkyo speaker. No need to turn to subtitles anymore ;-) Also, overall sound is so much richer and deeper with this center speaker. I will probably replace my front speakers with ones matching Infinity PC 351 better than the stock Onkyo ones. It is quite big, but i have room for it as will have those who wall mount their TVs and keep speakers on the console below it. Also very happy with service and pricing provided by Crutchfield.
Pros:
sound quality, built quality, looks
Cons:
was more than $100
1 out of 2 people found this helpful
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5 out of 5

Nice Center speaker!

Written By Chuck D, Syracuse NY on Monday, January 14, 2013
Crutchfield Customer Review (What's this?)
 
One of the best center speakers I have personally heard... not much less HIFI sound than the B&W I just heard at Mangloia Best buy for $600 !!
Pros:
larger must have room on your tv stand console... movies are awesome with this speaker!!
1 out of 1 people found this helpful
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5 out of 5

Very Pleased with purchase

Written By Bob F, Huntington Beach, CA on Saturday, December 22, 2012
Crutchfield Customer Review (What's this?)
 
I ordered during the holiday shopping season and was surprised at how quickly I received the product. I did not utilize any special shipping and received the shipment with in three or four days. The sound from the speaker is wonderful. I use the center speaker in conjunction with two forward and two rear infinity speakers. The room is 20X20 and is filled with rich tones with this setup.
Pros:
Sound quality and service.
Cons:
the speaker is a bit taller than expected but this is more a personal issue than a manufacturing or quality issue. I should have paid attention to the specs and not the percetion of the picture.
2 out of 2 people found this helpful
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5 out of 5

Infinity Center Channel Speaker

Written By MCB, Pinckney, MI on Saturday, November 17, 2012
Crutchfield Customer Review (What's this?)
 
I chose this speaker because it is an acoustic suspension design and that it was an Infinity. One of the key things in chosing a center speaker is its compatibility with your existing speakers. I believe that this speaker does this for me. I like to think that I have Infinity's golden age speakers (1980s). My front speakers are RSIIIb (acoustic suspension.) Infinity is a different company now so the brand name isn't the key. First I have to say that any (that I know of) center speaker does not and need not out perform the front speakers. In my case the PC351 can not match my RSIIIb's. The very lows and the very highs are not there. BUT, the PC351 does remarkably blend together well with my main speakers. I did two different types of testing, playing a good wide range jazz CD and test tones (from my Dolby decoder, white like noise). I was very impressed. I never expected such good blending between the speakers. Listening to the test tone smoothly phase interfering between the PC351 and my main speaker, blew me away. (Test: move your listening position (while close) between the speakers and hearing audio wave sound pattern changes when the tone is sent to both speakers)
Pros:
Great speaker. Very nice with movies and audio recordings. Maybe compatable with more than acoustic suspension speakers. Perhaps Infinity has gotten back some of their old magic.
Cons:
I haven't figured that out yet. Maybe that it is not made in the USA.
3 out of 5 people found this helpful
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5 out of 5

A great addition to my audio system

Written By johnm, San Diego, CA on Sunday, November 11, 2012
Crutchfield Customer Review (What's this?)
 
I'm currently using Bose 301 speakers for the front of the room and Bose 201s for the rear. I had a Polk Audio CS10 for my center speaker but wanted to upgrade. After reading the reviews, choosing the Infinity Primus PC351 was an easy choice, and a good one, too. The sound is bright and clear and exactly what I was looking for.
Pros:
Great sound, beefy construction.
Cons:
None
2 out of 2 people found this helpful
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5 out of 5

Nice!

Written By BT, AZ on Thursday, November 08, 2012
Crutchfield Customer Review (What's this?)
 
This speaker sound great. Perfect for a surround sound system.
Pros:
Sounds great.
Cons:
None
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5 out of 5

Great Value

Written By Joshua J, Minneapolis, MN on Friday, September 28, 2012
Crutchfield Customer Review (What's this?)
 
Growing up listening to movies and music through my JBL Soundgear 3030, I have always held Harmon International products in high regard. When it came time for me to finally assemble my own home theater system, I was expecting no less from these Infinity speakers. I've created a system of 4 P363's towers, 2 P163's bookshelfs, a C351 center, and a PS312 sub, all powered by a Harmon/Kardon AVR3650. Being a bargain hunter, I waited for these to go on "sale" to obtain the best price (well this side Black Friday sales prices).

I have had the speakers hooked up for about two months now, and all I can say is WOW! The sound reproduction and tonal quality is incredible. Everyone has their own opinions on what sounds good, but ultimately the quality of the sound comes down to the quality of the receiver and the quality of the speaker components. I've utilized various mediums ranging from music, movies and video games, and in each medium, even with works I know quite well, comes alive- whether connected via HDMI, fiber optic or composite. There are qualities to the sound that I did not know existed- that is how incredibly clear the sound is. I would definitely recommend these speakers to someone looking to obtain the best sound for the price, while still having a high quality product.
3 out of 3 people found this helpful
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5 out of 5

Infinity Primus PC351

Written By mak1313, Ohio on Wednesday, August 29, 2012
Crutchfield Customer Review (What's this?)
 
Superb sound and quality! I have this and a set of P163's and a set of P363's along with a Klipsch sub 12 and the sound is beyond belief!
2 out of 3 people found this helpful
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5 out of 5

Terrific Home Theater Center Console Speaker

Written By The Hawk, Longwood, FL on Thursday, August 16, 2012
Crutchfield Customer Review (What's this?)
 
The addition of the Infinity Primus PC351 five individual speakers in the center speaker position in your home theater set-up is outstanding. Before this addition, I was using an Onkyo center speaker with only three speakers. What a difference the sound reproduction of five versus three speakers makes in filling a room. It also provides more adjustable soiund options through your receiver allowing you to spead the bass around better. For the price, this Infinity Primus PC351 is by far the best center speaker that I have ever used. You cannot go wrong with selecting the PC351.
Pros:
Five speakers; total adjustability; excellent sound reproduction; excellent price.
Cons:
Weight! It was quite a bit more that other center speakers on the market (25+ pounds). Just make sure your shelp can support it without fatiguing.
3 out of 3 people found this helpful
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5 out of 5

My 1st center

Written By PK, Burleson Tx on Tuesday, July 03, 2012
Crutchfield Customer Review (What's this?)
 
Well, This is my 1st center speaker and its a little bigger than i expected but i didnt just want the minimum either. So i went all the way and i love it despite the size. Instead of placing it on top of my cabinet in front of the tv i placed it under the tv inside the cabinet... worked out perfectly. as far as sound goes it just fills things out so much more with both dialogue and background noises such as birds singing and just normal background noises of life. anyway it sounds great, I highly recommend it.
Pros:
Great sound, matches my floors and sub. looks nice.
Cons:
Bigger than i thought, but just rethought my location.. worked out great.
5 out of 5 people found this helpful
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5 out of 5

A Beast - Love it.

Written By BKautz, Oswego, IL on Tuesday, February 21, 2012
Crutchfield Customer Review (What's this?)
 
I've owned Infinity speakers for years. I re-purposed my old Reference Series towers for my new home theater set up without reservation. I just needed a center channel that could not only match the front right and left, but keep up. This speaker does that and more. It's as accurate as the RS towers, and nearly as powerful for a well balanced and pure sound. Couldn't beat the price for a great center. I have installed Infinity in-walls to complete my 9.2 surround set up. I've waited a long time for this set up, and couldn't be happier.
Pros:
Accurate, Powerful, Voice-matched to both new and old Infinity loudspeakers.
Cons:
Not necessarily a "con", but it's definitely a beast. To heavy to hang with one of the more wimpy wall brackets, so it needs a stable surface.
1 out of 1 people found this helpful
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4 out of 5

Infinity Primus PC351

Written By Anonymous, Yakima, WA on Sunday, February 12, 2012
Crutchfield Customer Review (What's this?)
 
So far we are really enjoying the new system sound is so much better
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5 out of 5

Nice speaker

Written By DanF, Westlake, OH on Saturday, February 11, 2012
Crutchfield Customer Review (What's this?)
 
Very satisfied with this center. Sounds great with vocal. I got the product in two days, very impressive. Even better, I got it on sale. Can not bit it for $200.
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5 out of 5

Love it

Written By Anonymous, Georgia on Thursday, February 09, 2012
Crutchfield Customer Review (What's this?)
 
Great sound and matches up well with my other speakers.
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4 out of 5

Infinity Primus PC351

Written By Anonymous, miami on Sunday, February 05, 2012
Crutchfield Customer Review (What's this?)
 
good product, for a great price. It was a much needed upgrade for my system.
Pros:
Price, quality
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5 out of 5

AMAZING center channel

Written By RichardJ, Brooklyn, NY on Monday, September 12, 2011
Crutchfield Customer Review (What's this?)
 
I'm no official audiophile, but since my cousin Jim took me to two HT tradeshows I now know what a Class A $125K system sounds like. Curse him for showing me how great it can be! Oh I have seen the light! They have these demos showcasing systems that test limits of the human ear.

Long story short, I was watching some HD movie where glass shattered & I found myself wincing a bit from the clarity - It was awesome! I have five P163 bookshelves, and the C351. Their mids & highs are superbly crisp, vocals are so true you forget speakers are there & the lows are wonderful too. Love my lows (like Flo- Rida) as I already have a powered sub for the heavy stuff. Explosions are very full & lifelike - not at all muddled.

I believe the Primus received a C rating in '07 with systems that are $20K. I don't have $20K to spend on speakers, lest I be divorced. But Crutchfield is letting me live the $20K Class C dream at well under $1K! I almost feel guilty. So now I have extra cash to put towards another mid-life crisis, like buying a falcon (as in the commercial) Grab these speakers, can't get a better deal for the quality & they truly deliver!
20 out of 25 people found this helpful
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Add accessories for the Infinity Primus PC351

You'll need wire to connect your center channel speaker to your amp or receiver.Cut your speaker wire to the exact length you need with a spool of bulk speaker wire. No wire is included with this speaker. See all categories & accessories

AudioQuest X2 Speaker Cable 14-gauge cable, connectors optional (30 feet, Gray)
19 people say
Your Price: $58.99
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AudioQuest G2 Speaker Cable 16-gauge cable, connectors optional (30 feet, Gray)
17 people say
Your Price: $38.99
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Monster XPHP™ MKII Speaker cable with clear jacket (100 feet)
8 people say
Your Price: $99.95
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Monster XP® Speaker cable with clear jacket, connectors optional (100 feet)
37 people say
Your Price: $64.95
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11 people say
Your Price: $14.99
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2 people say
Your Price: $14.95
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58 people say
Your Price: $19.95
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10 people say
Your Price: $11.95
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4 people say
Your Price: $15.95
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9 people say
Your Price: $13.95
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Monster XP Mini Twist-on Pin Connectors 4 pair, 16-gauge (4 pair)
13 people say
Your Price: $11.95
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Original Monster Cable With gold pin connectors (15-foot pair)
31 people say
Your Price: $39.99
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Monster Cable SuperFlat™ Mini Decor-friendly speaker cable with gold pin connectors (50-foot spool)
24 people say
Your Price: $34.95
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AudioQuest Type 4 Single center speaker cable with pre-attached banana connectors (10 feet)
8 people say
Your Price: $124.49
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Sanus NFC18 Single 18" center channel speaker stand (Black)
2 people say
Your Price: $99.99
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Pinpoint AM15 Center channel speaker wall mount
16 people say
Your Price: $29.99
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For a more in-depth review and enhanced detailed information on the Infinity Primus PC351, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_108PC351BK/Infinity-Primus-PC351.html ).

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Compare with other Infinity models

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  • Infinity Primus PC351
  • center channel speaker (each)
  • 5 out of 5: In Stock
    • The Infinity Primus PC351 offers:
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      • 3/4" dome tweeter, dual 3" midranges, and dual 5-1/4" woofers
      • Metal Matrix Diaphragm® drivers minimize distortion
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    After $80.00 Price Break
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  • Infinity Primus PC351
  • Infinity Primus PC351
  • Get details
  • $199.99
  • After $80.00 Price Break
  • Add To Cart