Polk Audio LSi9

Bookshelf speakers

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Ebony finish

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Item# 107LSI9E

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Polk Audio LSi M 703
$749.99

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Customer Reviews
Category Info
Accessories

Our take on the Polk Audio LSi9

by Julie Govan

Enjoy engaging sound from these carefully crafted bookshelf speakers

Crisp classical music — check. Complex and layered jazz — got it. High-energy rock, vibrant R&B, lifelike country — no problem! That's because the Polk LSi9s are a part of the critically acclaimed LSi series — a line of speakers that's surprised audio reviewers and audiophiles alike with superb design and powerful, true-to-life sound reproduction. The LSi9 bookshelf speakers are a marvelous way to enjoy incredibly open, beautifully full, and above all, natural sound from a compact cabinet. After all, not everyone who loves great audio has the space (or budget) needed to fill a room with tower speakers.

Clear highs and smooth mids

Polk's Ring Radiator tweeter produces crystal-clear highs.

From the 1" Ring Radiator tweeter you'll get the crystalline, transparent highs that give precision to music and home theater. Careful cabinet design and dual 5-1/4" drivers round out lower-end sound very nicely. Other innovations — an anti-diffraction grille for spacious, accurate imaging, ARC Ports for controlling cabinet resonances, and a Power Port for reinforcing bass — team up to bring you a deep, realistic soundstage. A Soundstage! review of April 2002 noted of the LSi9, "Both [its midrange and bass] were full — impressively full for such a small speaker — and smooth. . . . Not only is it an exceedingly refined, first-class performer, it has specific sound qualities that make it stand out in its price class."

An inside look at Polk's thoughtful speaker design.

Great for home theater or stereo music setups

With this extraordinary aptitude for rendering stereo music with stunning precision, the LSi9 will shine in a multichannel home theater setup as well. Use an LSi9 pair as front left and right speakers in a small setup, or surrounds in a large one. 2 pairs of 5-way, gold-plated binding post terminals let you biwire or biamp your speakers.

Recommended center channel speaker: Polk LSiC.
Recommended surround speakers: Polk LSi7, LSi9 or LSiFX.

Read our in-depth review of Polk's LSi9 speakers.

Highlights:

video-shielded
bass-reflex
frequency response 50-26,000 Hz (-3dB)
4-ohm impedance; these speakers must be powered using high-current amplification
sensitivity 88 dB
handles up to 200 watts
dual 5-way, gold-plated binding post terminals
real wood veneer
8-5/8"W x 14-15/16"H x 15-1/4"D
warranty: 5 years
Our 60-day money-back guarantee

Priced per pair

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

Features and specs chart | What’s in the box? | In-depth notes

Features and Specs


Enclosure Loading...	Bass Reflex
Video Shielded Loading...	Yes
Tweeter Type Loading...	Ring Radiator
Tweeter Size (inches) Loading...	1
Midrange Size (inches) Loading...	N/A
Woofer Size (inches) Loading...	5.25
Woofer Composition Loading...	Aerated poly
Woofer Surround Loading...	Rubber
Power Range Loading...	20-200
Sensitivity Loading...	88 dB
Impedance (Ohms) Loading...	4
Frequency Response Loading...	50-26k Hz
Connector Type Loading...	5-way post
Bi-amp Inputs Loading...	Yes
Height (inches) Loading...	14-15/16
Width (inches) Loading...	8-5/8
Depth (inches) Loading...	15-1/4
Weight (pounds) Loading...	---
Mounting Bracket Included Loading...	No
Recommended Stand Height (inches) Loading...	24-26
Parts Warranty Loading...	5 Years
Labor Warranty Loading...	5 Years

Product Research

What's in the box?

Download owner's manual

2 Ebony bookshelf speakers
8 Self-adhesive rubber feet
Owner's Manual
Product Registration Card
"Register Online" 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

Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

Aerated Polypropylene Woofers: Each speaker uses an Aerated Polypropylene woofer cone for wide response and low distortion. For superior durability, the woofers use rubber surrounds.

1" Ring Radiator Tweeters: Each speaker features a 1" Ring Radiator tweeter for crisp, transparent highs. The ultra-light woven Ring Radiator Diaphragm delivers flat response, precise detail and overall accuracy. A High Frequency Waveguide prevents phase cancellations for smooth, uniform frequency response and wide dispersion. A Low Frequency Waveguide promotes laminar airflow between chambers to prevent air turbulence. This feature serves the same function as Power Port for Polk's bass systems.

Cast Aluminum Driver Baskets: Cast aluminum driver baskets resist flexing and "ringing" for ultra-tight bass and coloration-free midrange.

Cascade Tapered Crossovers: The Cascade Tapered Crossover array in each speaker ensures flat midrange response and improves imaging focus, and depth. One driver is crossed over much lower in frequency and is in essence a bass-only driver. Only one driver plays the upper midrange frequency range thereby eliminating the interference effects between the two drivers. This gives you the dynamic impact of double drivers with the accuracy and life-like imaging of a single driver system.

Frequency Response Note: The overall frequency response is 38Hz-27kHz and the -3dB frequency response is 50-26kHz.

Enclosure Design

Acoustic Resonance Control (ARC): Internal cabinet resonance can impart a "thick" character to voices. Polk's patented Acoustic Resonance Control port system overcomes this problem. In addition to the Power Port venting system, each speaker has a front-firing port that is tuned to suppress the internal cabinet resonance, resulting in smooth, natural midrange reproduction.

Low-diffraction Grilles: The speakers employ open architecture low-diffraction grilles for spacious imaging.

Power Port Venting System: Each speaker has a rear-firing Power Port venting system built into its back plate for precise deep bass response. This venting system allows air velocity to slow gradually, vastly reducing air turbulence, and delivering greater bass efficiency than conventional ports.

Connections

Dual 5-Way Binding Posts: Each speaker has two sets of gold-plated 5-way binding posts connected by gold-plated jumpers. Using the dual 5-way binding posts, you can bi-amp or bi-wire the speakers.

Review Summary

Average Customer Review:

19 people say:

5 Star:

(16)

4 Star:

(2)

3 Star:

(1)

2 Star:

(0)

1 Star:

(0)

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1-10 of 19 items >> Sort Results By: Date Reviewed | Rating | Helpfulness

5 out of 5

The sound is extraordinary!!!

Written By Frank, Miami, FL on Thursday, June 22, 2006

Crutchfield Customer Review (What's this?)

Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

I had bought the LSI7 before and where not very please because they lacked bass so I returned them.
I decided to try the LSI9 and they are great I have no complains. The sound is extraordinary!!!
They can reproduce every type of music to the very detail (except very deep bass).

3 out of 6 people found this helpful

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5 out of 5

Very happy with this product!

Written By Joe, Mansfield,TX on Tuesday, May 16, 2006

I purchased these with the LSiC and LSiFX for a complete matched set and put them together an M&K sub and...HOLY COW!! I have never heard so much detail in movies before. And the musical reproduction is outstanding. You will do well to get these for yourself. My favorite sound so far is the THX intro thing...my kids say it's like getting a free massage when that plays. Of course, you and I know the massage wasn't exactly free!

1 out of 2 people found this helpful

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5 out of 5

Mark B

Written By Mark B, New York, NY on Friday, February 08, 2008

Crutchfield Customer Review (What's this?)

Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

Look great. Sound fantastic. A great addition as my front L/R home theater speakers. One of the speakers was damaged in shipping and Crutchfield was great in getting a replacement out to me immediately. The service from Crutchfield has been some of the best I have ever experienced, web or otherwise. I would highly recommend them.

5 out of 5 people found this helpful

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5 out of 5

OUTSTANDING

Written By Shotster36, Morris, IL on Sunday, January 21, 2007

Couple these speakers with the rest of the Lsi family and a nice subwoofer and the results will blow you right out of your recliner. Regardless if your listening to music or wathching a movie. Polk Audio IS the Best!

1 out of 1 people found this helpful

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5 out of 5

Polk Audio LSi9

Written By Kevin, Arlington, Tx on Friday, December 09, 2005

Crutchfield Customer Review (What's this?)

Crutchfield Customer Review

The reviewer purchased this item from us, verified by the email address on the order.

Brilliantly clear sound, won't be dissapointed.. great for movies and music. I also bought the LSiC and love it all! Fills my living room wonderfully (25ftx20ft).

Only complaint is the price because I want to buy more for other rooms. Also to get the best sound it requires higher listening levels to get them to come alive. I'd say around 80 to 85 db which isn't asking for much seeing that one would easily turn up the volume to hear the LSi's great sound.

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5 out of 5

kantaben h patel

Written By home theater a/v etc., dalton,georgia on Saturday, July 16, 2005

i got second experience with polk this year and got more power with polk,like sharp detail on high also un excepted mids and high like without floor standing speaker.it's make me a realty very best home theater in my front speaker.no have no words for it's performancce and it's crutchfield sales adviser. i been customer since 1996.and still never get any bed problem from their items.last,in my life,i can get crutchfield,if they carry my items.

2 out of 19 people found this helpful

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5 out of 5

The best bookshelf speakers I've ever heard!

Written By Mark, Maryland on Saturday, March 04, 2006

First, I couldn't believe how incredibly beautiful these speakers are! The cherry finish makes this a fine addition-beautiful to look at! Even if they weren't so beautiful they'd still be the best value. They create a smooth sound at low or high volume. I put them through their paces after I received them, using everything from classical to heavy metal. The only thing to remember is that these speaker cabinets are much deeper than most, over 15 inches, and they weight about 33 pounds each, much too large or heavy for most speaker stands. You'll need to invest in some heavy duty stands to make sure you protect this investment and get the best sound.

6 out of 7 people found this helpful

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5 out of 5

Small package, big sound

Written By Diana, Orange, California on Friday, March 03, 2006

This is the spouse of Diana here. Just picked these up last night. My first foray into legitimate high-end speakers. Man these guys are heavy! And beautiful, piano black and cherry. Gorgeous. The sound? I guess I was a little concerned that even my beefy Outlaw would have trouble driving them, but they absolutely *sing.* Pull out all the words -- smooth, transparent, etc. etc. -- and you start getting the idea. Incredible bass from the small box. I have the sub turned off a good portion of the time with just some bass boost via the outlaw. Extremely detailed speakers but not fatiguing. Not harsh, although I haven't tried to rattle the walls yet. Like violins? You've never heard them like this. Wide, firm soundstage. They are, in the final analysis, extremely musical.

5 out of 5 people found this helpful

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5 out of 5

Big sound from a small package

Written By Doug, Trabuco Canyon, CA on Thursday, January 28, 2010

I'm no audiophile, but these little speakers really impress me. I believe they sound even better than my LSi15's that I moved to another room. Very clear mids and sparkling highs. Because the room is used primarily for my home theatre, I haven't just sat and listened to music in 20 years and now I can't wait to get home to do just that.

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5 out of 5

AN EARFUL OF SIN

Written By dasha007, DENVER, COLORADO on Thursday, August 13, 2009

Purchased Polk LSI9's and LSI center, anyone on the fence jump off and buy, I also own SUPERTOWERES, $2000 a piece, and these speakers come so close that it makes me wonder why I spent so much on that whole system, over 6k. Don't get me wrong you get what you pay for, however what I'm saying is they are darn close, thanks Polk Audio for adding to my fine collection of earful sin, cheers.

1 out of 1 people found this helpful

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1-10 of 19 items >>

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For a more in-depth review and enhanced detailed information on the Polk Audio LSi9, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_107LSI9E/Polk-Audio-LSi9-Ebony-finish.html ).

Sorry, the Polk Audio LSi9 is no longer available for purchase.

Shop all Bookshelf Speakers

Looking for a similar item?

Polk Audio LSi M 703

$749.99

1 person says

Or, you can still...
Go

Polk Audio LSi9

Bookshelf speakers

Item# 107LSI9E offer details

Review Summary

By buying this product you'll earn up to 1000 Rewards points.

Our take on the Polk Audio LSi9

Why choose bookshelf speakers?

Enjoy engaging sound from these carefully crafted bookshelf speakers

Clear highs and smooth mids

Great for home theater or stereo music setups

Highlights:

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

Features and Specs

Product Research

Our Product Research Team

Driver Technology

Enclosure Design

Connections

Product Reviews

Review Summary

Average Customer Review:

The sound is extraordinary!!!

Very happy with this product!

Mark B

OUTSTANDING

Polk Audio LSi9

kantaben h patel

The best bookshelf speakers I've ever heard!

Small package, big sound

Big sound from a small package

AN EARFUL OF SIN

Learn more about Bookshelf Speakers

Learn more about Bookshelf Speakers

Video: Speaker Placement for Great Sound

Speaker Types

Speaker Placement for Home Theater

Home Speakers FAQ

Home Speakers Glossary

Accessories

Things you'll need

Accessories we recommend

Sorry, the Polk Audio LSi9 is no longer available for purchase.

Looking for a similar item?

Polk Audio LSi M 703

$749.99

Or, you can still...