1.888.955.6000
crutchfield.com
Crutchfield

Polk Audio LSiFX

Dipole/bipole surround speakers

Zoom
  • Polk Audio LSiFX

    Front

  • Polk Audio LSiFX

    Back

Item #: 107LSIFX
 

Review Summary

DISCONTINUED
 
This item is no longer available to purchase.
 
Contact us for other options
 
Call   Email  
 
Original price $999.99
We recommend this similar item, or shop all Surround (Rear) Speakers
 
 
 
 
 

Our take on the Polk Audio LSiFX

by Julie Govan
Polk Audio
Exploded speaker

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

Experience your movie soundtracks unlike ever before

When it comes to making a movie soundtrack come to life all around you, it's hard to beat dipole/bipole surrounds like the LSiFX speakers from Polk. These flexible speakers have 45° angled driver arrays, giving you the perfect mix of direct and indirect sound. Each array sports a 1" Ring Radiator tweeter and a 5-1/4" aerated polypropylene Dynamic Balance driver — the incredibly robust, natural sound will envelop you.


Versatile design and placement

Grill off

When it comes to placement and listening preferences, you can change the phase relationship between driver arrays with the handy dipole/bipole switch. A bipole setting is great for placing the speakers behind your listening position, and provides clear, directional sound. Dipole usage, on the other hand, is ideal for placement to the side of your listening position and results in a more diffuse soundfield. Wall-mounting is simple, thanks to the built-in keyhole slot. Plus, with a sophisticated, high-gloss black finish, the LSiFX makes a nice addition to any room. Timbre-matched to Polk's LSi line of speakers.

See more info on this item

Highlights:

  • bass-reflex
  • frequency response 52-26,000 Hz (-3dB)
  • 4-ohm impedance; these speakers must be powered using high-current amplification
  • sensitivity 88 dB
  • handles up to 200 watts
  • keyhole slot
  • high-gloss black finish
  • 5-way, gold-plated binding post terminals
  • 13-1/16"W x 15"H x 10"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
Enclosure
Loading...
Bass Reflex
Bipole or Dipole
Loading...
Switchable
Tweeter
Loading...
Ring Radiator
Midrange size (inches)
Loading...
N/A
Woofer size (inches)
Loading...
5-1/4
Connector Type
Loading...
5-way posts
Power Range
Loading...
20-200
Sensitivity
Loading...
88 dB
Impedance (Ohms)
Loading...
4
Frequency Response
Loading...
52-26k Hz
Height (inches)
Loading...
15
Width (inches)
Loading...
13 1/16
Depth (inches)
Loading...
10
Weight (pounds)
Loading...
---
Mounting Bracket Included
Loading...
Yes
Parts Warranty
Loading...
5 Years
Labor Warranty
Loading...
5 Years
Product Research
What's in the box?

Download owner's manual

  • 2 LSiFX surround sound speakers
  • 8 Adhesive backed black rubber feet
  • Template for wall mounting
  • Manual
  • Product registration survey
  • On line registration information

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
Mounting Options

Driver Technology

Tweeter: The LSiFX uses the same Ring Radiator tweeters as the rest of the LSi Series. This produces a seamless front stage and lifelike surround environment. 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.

Basket: The cast aluminum driver baskets resist flexing and "ringing" for ultra-tight bass and coloration-free midrange.

Timbre-Matched: Timbre-matched with the LSi Series for a seamless, realistic surround sound experience.

Enclosure Design

Enclosure: The speaker has a triangular shape with the speaker faces angled at 45 degrees. Both faces have a tweeter and a woofer and one face also has a switch for selecting Dipole or Bipole operation.

Grille: The open architecture low diffraction grille is used for spacious imaging.

Power Ports: Dual rear-firing Power Ports built into the back plate provide distortion-free bass and surprisingly deep bass response.

Connections

Bi-Amplification: Since this speaker may be bi-amplified, you can improve the sound by using separate amplifiers for the tweeter and woofers. Note that the jumpers connecting the 2 pair of 5-way binding posts must be removed when bi-amplifying.

Mounting Options

Placement: Designed for use only as rear surround speakers.

Wall Mounting: The Power Ports double as convenient wall mounting brackets with key hole slots.

Dipole/Bipole Switch: There is a switch that allows the speaker to be used as a Dipole (out of phase) or Bipole (in phase) speaker. If you're mounting the speakers on the side walls in line with your listening position, the dipole mode will create a diffuse, ambient soundfield. If you're placing them behind your position, the bipole mode fires the drivers in phase to flood your room with surround sound. When used with a Dolby Digital system, the surround speaker setting should be set to small.

 
Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

Polk Audio LSiFX Reviews

Average Customer Review:

3 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5

Ear-gasmically fantastical!!!

Written By Joe, Mansfield, TX on Tuesday, June 30, 2009
 
Real words can't describe the incredible sound emitted from these speakers. The entire LSi series from Polk Audio is amazing. I use the LSi 9, LSi C, and LSi FX with a sub and Onkyo receiver. Everything I listen to is reproduced more clearly and accurately than with any other speaker brand that I've ever heard.
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

OUTSTANDING!!!!!!

Written By Shotster36, Morris, IL on Sunday, January 21, 2007
Crutchfield Customer Review (What's this?)
 
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 watching a movie. Polk Audio IS the Best!
8 out of 8 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

awesome clear surround / loud speakers

Written By chris, lantana, fl. on Sunday, February 27, 2005
Crutchfield Customer Review (What's this?)
 
these surrounds are awesome. the highs, mids and even bass is just like the rest of the lsi series ( clean, clear and tight ). I also use these speakers on my other main channels for music.
If you want the best surrounds these are the ones.
at 4 ohms it turns 170 watts per channel into 230 watts.
I wouldnt trade my entire lsi series for any speaker.
I tried the entire csi series first and was not happy HOWEVER, because Crutchfield offers such great service, I sent the entire csi series back and purchased the entire lsi series. Perfect speakers and perfect service.
343 out of 465 people found this helpful
Was this review helpful?    Yes | No
 

Add accessories for the Polk Audio LSiFX

You'll need speaker wire to connect your surround speakers to your amp or receiver. No wire is included with this speaker. See all categories & accessories

Monster Cable SuperFlat™ Mini Decor-friendly speaker cable with gold pin connectors (50-foot spool)
24 people say
Your Price: $34.95
Add to Cart

Why choose SquareTrade?

The #1-Rated Protection Plan

Thousands of people have reviewed SquareTrade Protection Plans — and made us #1.

5-Day Service Guarantee & Free Shipping

We'll repair or replace your item in five business days or less after we've received it, or your plan is free. And, as always, we pay for all shipping.

Protection from Normal, Everyday Use

Repairing your average mechanical or electrical failure can cost as much as buying a new device. With SquareTrade, you're covered — including parts and labor.

For a more in-depth review and enhanced detailed information on the Polk Audio LSiFX, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_107LSIFX/Polk-Audio-LSiFX.html ).