Tower Speaker Reviews

Polk LSiM707 Surround Speaker System Specs

Specs

Speaker: LSiM707
Type: Four-way vented, L/R
Tweeter (size in inches, type) 1, ring radiator
Midrange (size in inches, type): 3.25, aerated polypropylene
Midbass: 6.5, aerated polypropylene
Woofer (size in inches, type): 6 x 9 (2), aerated polypropylene
Nominal Impedance (ohms): 8
Recommended Amp Power (watts): 20-300
Available Finishes: Mount Vernon Cherry, Midnight Mahogany
Dimensions (W x H x D, inches): 9.5 x 50.9 x 18.4
Weight (pounds): 99.2
Price: $4,000/pair

Speaker: LSiM706C /x
Type: Three-way vented, center
Tweeter (size in inches, type) 1, ring radiator
Midrange (size in inches, type): 3.25, aerated polypropylene
Woofer (size in inches, type): 6.5 (2), aerated polypropylene
Nominal Impedance (ohms): 8
Recommended Amp Power (watts): 20-250
Available Finishes: Mount Vernon Cherry, Midnight Mahogany
Dimensions (W x H x D, inches): 28.75 x 9 x 13.8
Weight (pounds): 42.3
Price: $1,200/each

Speaker: LSiM702f/x
Type: Three-way vented, surround
Tweeter (size in inches, type) 1, ring radiator
Midrange (size in inches, type): 3.25, aerated polypropylene
Woofer (size in inches, type): 6.5, aerated polypropylene
Nominal Impedance (ohms): 8
Recommended Amp Power (watts): 20-200
Available Finishes: Gloss Black
Dimensions (W x H x D, inches): 19.9 x 16.25 x 6.75
Weight (pounds): 28.9
Price: $1,500 each

DSWmicroPRO3000 subwoofer
Enclosure Type: Passive radiator
Woofer (size in inches, type): 10, polypropylene
Rated power (watts): 1,200
Connections: Line-level LFE, line level L/R, speaker level L/R
Crossover Bypass: Yes (LFE in)
Available Finish: Gloss Black
Dimensions (W x H x D, inches): 12.5 x 14.13 x 13.5
Weight (pounds): 45
Price: $1,700/each

System Price: $9,900 (updated 3/10/15)

Company Info
Polk Audio
(800) 377-7655
polkaudio.com

COMPANY INFO
Polk Audio
(800) 377-7655
polkaudio.com
ARTICLE CONTENTS

COMMENTS
kevon27's picture
Submitted by kevon27 on June 2, 2012 - 5:26pm

It's about time we get a review of these Polks.. It seems the weakest link are the Subs, and I really think Polk should update their sub line to go beyond the DSWmicroPRO..
Good review and hope to see a review of the Bookshelf setup.

riverwolf's picture
Submitted by riverwolf on June 4, 2012 - 6:53pm

It appears Mr. Norton has fallen victim to a common item of confusion with recent vintage Onkyo/Integra products. The 9.8 does not allow separate low pass and high pass frequencies as stated in the review. As can be seen on numerous HT forums, Onkyo/Integra's decision to expose the "LPF of the LFE" as a user adjustable option has lead many to believe as Mr. Norton that they can select the high and low pass frequency for bass redirection separately. In reality, the "LPF of LFE" setting only limits the high frequency response of the LFE (.1) channel in a multi-channel mix. The "LPF of the LFE" has no effect on information redirected from the main channels (L/C/R/Surrounds) to the subwoofer via bass management. Mr. Norton was sending only information below 40Hz in the main channels to the subwoofers while limiting information in the LFE channel to 80Hz and below. There was no overlap between the subwoofers and mains in the 40-80Hz range. In fact, if the sound mixer included >80Hz material in the LFE channel, that information was lost.

Mr. Norton's finding that mid-bass was thin when the mains were set to 80Hz is most likely a room placement issue where the room to listener relationship created a dip relative to the same frequency range produced by the mains. I know reviewers don't generally employ room correction during reviews, but it's likely the Audyssey MultEQ XT system in the 9.8 would have corrected the dip below 80Hz if the system were used with the 80Hz crossover on the mains instead of 40Hz.

As always, I enjoy Mr. Norton's audio reviews and look forward to more in the future. Don't limit him to video products only. :-)

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