Infinity Primus® P153

Bookshelf speaker

Outlet: Open Box

Item #: 108P153BK

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19 Reviews


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Once you hear the warm, rich sound of Infinity's Primus P153, you won't believe you got away with paying so little for it. With its Metal Matrix Diaphragm® driver technology and low-resonance enclosure, you'll hear music exactly as it was recorded. The Primus P153 produces sparkling high frequencies and detailed midrange from any type of music, at any volume level. And for a compact bookshelf speaker, the bass might just surprise you. So sit back, relax, and enjoy the lifelike vocal tracks, sophisticated percussion, and robust instruments that envelop and excite you.

Exclusive Infinity Metal Matrix Diaphragm drivers
The Primus P153 features Infinity's exclusive Metal Matrix Diaphragm ("MMD" for short) driver technology in both the 3/4" tweeter and 5-1/4" woofer. 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, giving you distinctly cleaner, more realistic sound, even at higher volume levels.

Build your own Primus® system
The Infinity Primus P153 will fill just about any room with dramatic and well-defined sound. Pair it with Infinity's P363 floor-standing speaker and PC251 center channel 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.

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Product Highlights:

  • frequency response 58-20,000 Hz (±3dB)
  • handles up to 100 watts
  • sensitivity 88 dB
  • 8-ohm impedance
  • Metal Matrix Diaphragm® drivers minimize distortion
  • 3/4" MMD tweeter
  • 5-1/4" MMD woofer
  • magnetically shielded for safe placement next to older tube TVs
  • bass-reflex (ported) design
  • black woodgrain vinyl finish
  • 5-way binding posts
  • keyhole slots for easy wall-mounting
  • 7-3/8"W x 13"H x 10-1/2"D
  • weight: 13.5 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee

Why choose bookshelf speakers?

Bookshelf speakers may be small in size, but they can deliver surprisingly big sound. Some ultra-compact models even fit on a desktop. Most are right at home in tight spaces like shelves, so they're usually good choices for your home theater's rear channels. For the best performance, try placing bookshelf speakers on solid speaker stands to help the sound really "open up." If you want full bass impact, add a powered subwoofer and enjoy punchy sound that's as deeply satisfying as that of floor-standing speakers.

Infinity Primus® P153 Reviews

Average Customer Review:

19 reviews
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Great Sound

Written By JoniM, North Carolina on Wednesday, November 25, 2015

Crutchfield Customer Review (What's this?)

These speakers sound awesome We are in a small warehouse and they sound great.

Infinity Primus® P153

Written By Mk, Texas on Monday, November 09, 2015

Crutchfield Customer Review (What's this?)

Great sound, good looking speakers.

Pros: Sound, professional appearance

Cons: Bigger than I thought, but still pleased none the less!

Infinity Primus® P153

Written By Anonymous, Washington on Saturday, September 19, 2015

Crutchfield Customer Review (What's this?)

Excellent product

Pros: Good product for my needs

Cons: none

Infinity Primus® P153

Written By gary, oregon on Tuesday, September 01, 2015

Crutchfield Customer Review (What's this?)

I liked these speakers good clarity heavy construction.

Pros: Loud but clear.Would recommend the infinity sub to go with these.

Cons: none

Crisp n Clean sound

Written By Pete, New Jersey on Monday, July 13, 2015

Crutchfield Customer Review (What's this?)

Very good for small surround system in living room. worked great as front speakers

Pros: small

Cons: a bit pricey

great product

Written By w a, Pennsylvania on Friday, July 10, 2015

Crutchfield Customer Review (What's this?)

great product, even better service

Pros: see above

Cons: none

Great Surrounds

Written By Damien, New York on Monday, July 06, 2015

Crutchfield Customer Review (What's this?)

I have 4 P153s in use for my L, R and Rear-L, Rear-R surrounds. They are in grouped with my Infinity Primus 300 series floor standing Front Speakers and PC251 Center Channel. Since my room is only about 12'x22' in size - I didn't think the 163 series surrounds would be necessary. As I am not an audiophile, and did not individually test each speaker, my comments are based on the overall performance of the 7.1 Channel Infinity Primus speakers I put together.

In short, they are great. My floor standing speakers do the heavy lifting, but these P153 surrounds leave nothing to be wanted - in my use, I'm glad I didn't go with the 163s - there's no point. Originally I had wanted to go with a Klipsche set up... but, I'm glad I didn't. The clarity in base (along w/ the Infinity 10" powered Sub) mids and highs is fantastic for movies and music. So far, I've used this mostly for Pandora streaming. I put this system together for our in-home theater which does very well with our 92" projection screen.

We watched the most recent version of Godzilla, and Taken 3 - on more than one occasion, I had to double check over my shoulder because when the speakers are paired together (also some credit due to my Pioneer Elite receiver) the sound effects are incredibly real. I think vocal tones sound very real, not overly flat, and not overly bass-y.

This (I am hoping) has to be one of the best speaker series for the $ that i have come across. I highly recommend it

Pros: - Clarity - Punch - Look good

Cons: - Box is a little bigger than I'd hope for. A little large to use as mounted surrounds in a smaller space.

Infinity Primus® P153

Written By AESP, Illinois on Friday, May 08, 2015

Crutchfield Customer Review (What's this?)

I purchased this product for my studio apartment's home theater. the P153 delivers a strong sound fidelity even at higher volume while playing music. I would recommend this product to anyone who is looking for decent sound at a moderate price.

Infinity Primus® P153

Written By HankyS., Wyoming on Wednesday, January 14, 2015

Crutchfield Customer Review (What's this?)

Great quality and build excellent choice for the value, range is good.

Pros: Price, subwoofer not necessary.

Cons: Not sold as pair, does tend to get too bassie help control it with receiver if possible.

Great speakers

Written By Columbus John, Columbus, OH on Tuesday, December 30, 2014

Crutchfield Customer Review (What's this?)

I had missed the great audio days of the 70's. Recently I purchased a Yamaha RX-V477. I wanted to get speakers that would compliment that unit. The Infinity Primus P363 tower speakers, P153 bookshelf speakers, PC251 center speaker, and PS38 woofer are great. My music sounds great. Watched a movie with the family and felt like I was in the theater. Great speakers.

Pros: Sound reproduction is very good. Enclosures allow the sound to be natural.


Written By Uclaman, the Washington, DC Area on Friday, December 26, 2014

Crutchfield Customer Review (What's this?)

Great rear surround speaker.

Pros: Great sound for the money

Cons: None

Great deal and sound

Written By stevem, Boston, MA on Monday, December 22, 2014

Crutchfield Customer Review (What's this?)

Purchased these speakers for a reading room and general music listening. The sound is excellent, the price was very good and we really feel like we got a great buy for the money.

Pros: Small form factor, can hang from wall, can place on book shelf or table, excellent sound at a great price

Cons: I've got big hands so the speaker wire was a bit of a pain to attach to the connectors.

p153 speakers

Written By bobR, Colorado on Friday, November 21, 2014

Crutchfield Customer Review (What's this?)

I purchased these speakers for my surrounds and I love them! The acoustics are just fantastic! With these speakers I have completed my 5.1 home theater consisting of all infinity primus speakers and subwoofer all of witch I bought at Crutchfield. I have a Denon AVR1910 receiver running the show and it's all hooked up with Monster XPHP speaker cables and Monster 600sw subwoofer cable. Best home theater experience that I could ask for. Watching movies is like being in an IMAX in your home. I love listening to music and playing video games and my home theater just makes it that much more fun and enjoyable! Anybody looking for a good home theater you can't go wrong with a component system. It costs more but in my opinion it is well worth it.

Pros: Sounds great, easy to hook up and hang

Cons: None


Written By Mike, Baldwinsville, NY on Tuesday, September 02, 2014

Crutchfield Customer Review (What's this?)

Nice sound.....compact and a room saver

Great speaker

Written By Christopher M., Connecticut on Sunday, May 11, 2014

Crutchfield Customer Review (What's this?)

I initially purchased these speakers for my front sound stage. I loved them but then upgraded to the P163's. I kept the speakers and use them for my surrounds. They're bigger than some surrounds but they're not ostentatious by any means. They produce great sound. Everything is clear and crisp. I love them.

Also if you wanted to, you could add banana plugs to the rear inputs. There are two plastic pieces that sit into binding posts. You can use a small flat head screwdriver to "pop them out". Just make sure the screws are completely tighten for easier access.

Pros:  Great price  Look good; not too big  Sound

Cons: None that I can think of.

Infinity Primus® P153

Written By Ed, Goodyear az on Monday, June 24, 2013

Crutchfield Customer Review (What's this?)

I use the p153 for my rear surround speakers and they work great . They have a good bass response and also have a brighter overall sound then my old infinity book shelve speakers.

Pros: Packed carefully. Worked right out of the box with no hassle Great sound looks good too.

Cons: none

Excellent for the value

Written By Highstreet, Houston, Texas on Saturday, March 30, 2013

Crutchfield Customer Review (What's this?)

Have owned Infinity speakers since the 70's and their P153 is another excellent addition to their reputation. Great range, clear concise and strong both for individual listening enjoyment of playing to a room full of people. Thanks Infinity for keeping up the quality and value.

Infinity Primus® P153

Written By Anonymous, Lithia Springs, GA on Saturday, February 09, 2013

Crutchfield Customer Review (What's this?)

Was searching to replace aged infinity bookshelf speakers & these were hands down the best buy.

Pros: They compliment the existing infinity speakers & deliver quality center channel volume.

Cons: N/A

Love Infinity

Written By Luh P, NV on Monday, July 02, 2012

Crutchfield Customer Review (What's this?)

I love infinity speakers. Infinity speaker where in my grandma's 93 Chrysler and I love to play them as loud as she would let me. When I noticed many moons ago the infinity home speakers years ago. I instantly made my selection. They are priced right, work properly and blend in well in black paint and grille. They are another motivation to leave apts. Five minutes from the box to your ears

Pros: Even though the other speakers attached to my Yamaha RX-V365 are a couple years old, they fit in seamlessly. They can handle the watts, I see from the few time I pushed them above apt. levels.

Cons: They may not be high and sound like Bose, Thiel, Monitor, etc. Though they can definitely bring home theatre to your living room or mancave.

Hands-on research

What's in the box?

Download owner's manual

  • 2-way bookshelf speaker
  • Black cloth grille (installed)
  • 4 Self-adhesive rubber feet
  • Owner's Manual
  • Warranty sheet

Features and Specs

Enclosure Bass Reflex
Video Shielded Yes
Tweeter Type Dome
Tweeter Size (inches) 0.75
Midrange Size (inches) N/A
Woofer Size (inches) 5.25
Woofer Composition M.M.D.
Woofer Surround Rubber
Power Range 10-100
Sensitivity 88 dB
Impedance (Ohms) 8
Frequency Response 58-20k Hz
Connector Type 5-way post
Bi-amp Inputs No
Height (inches) 13
Width (inches) 7-3/8
Depth (inches) 10-1/2
Weight (pounds) 13.5
Mounting Bracket Included Keyhole
Recommended Stand Height (inches) 24-28
Parts Warranty 5 Years
Labor Warranty 5 Years

Product Research

Driver Technology
Enclosure Design
Mounting Options

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" Woofer: The 5-1/4" M.M.D. cone woofer offers extremely accurate midrange response for cleaner, more realistic sound. For a smoother response and improved durability, the woofer uses 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 P153'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 2-way crossover system with crossover frequency at 3300Hz. The crossover has a 24dB/octave slope.

Voice-Matched: The P153 is voice-matched to all the speakers in the Primus line, so a complete matching system can be built.

Magnetically Shielded: The Infinity Primus bookshelf loudspeaker is magnetically shielded for safe placement adjacent to your television.

Enclosure Design

Wood Grain Vinyl Cabinet: The Infinity P153 features a black wood grain vinyl cabinet that matches almost any decor.

Bass Reflex Design: The Infinity Primus bookshelf loudspeaker utilizes a bass reflex enclosure with a front-firing port for greater efficiency and bigger bass response.

Low Resonance Enclosure: The P153 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.


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.

Mounting Options

Rubber Feet: The speakers come with 4 rubber self-adhesive feet for each speaker to help secure them in place to prevent slippage and vibration.

Wall Mounting: The speaker has two keyhole slots in the upper left and right corners of the back panel. In addition, two non-skid rubber bumpers are attached in the lower corners so the speaker won't mar wall surfaces when the speaker is mounted. You can also use the optional PinPoint heavy duty side-grip wall-mounting bracket (121AM40B, sold separately) to wall mount the speakers.

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 verify what’s in the box, 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.

Looking for more? Check out the next model in this lineup.

Infinity Primus P163

Infinity Primus P163


In Stock

$77.39 After $8.60 Outlet Savings

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Enjoy deeper bass

The Infinity Primus P163 offers these features:

features a 3/4" MMD tweeter and a 6-1/2" MMD woofer

reproduces bass down to 49 Hz

handles up to 150 watts

has a higher sensitivity rating of 90 dB