Polk Audio Loudspeakers

Baltimore brand founded in 1972 by three Johns Hopkins graduates, and for decades one of the biggest names in American speaker retail.

Founded: 1972
Founders: Matthew Polk, George Klopfer, Sandy Gross
Headquarters: Baltimore, Maryland, United States
Manufacturing: Built in Asia
Parent company: Harman International (Samsung)
How to buy: Sold through specialist hi-fi dealers, online retailers and custom installers
Known for: SDA Stereo Dimensional Array, high value per dollar, a large presence in American retail

Currently, we have 68 Polk Audio loudspeakers in our database. Below you can find the list of these speakers with their main specs and links to their review pages.

Polk Audio Passive Bookshelf(18)
Polk Audio Passive Floor-standing(18)
Polk Audio Powered Subwoofer(9)
Polk Audio Passive Center Channel(12)
Polk Audio Passive In-wall(8)
Polk Audio Passive Surround(3)

Polk Audio Passive Bookshelf Speakers

Model	Frequency	Sensitivity	Impedance	Woofer
Polk L100	57-38k Hz	86 dB	4Ω	1 x 5.25"
Polk L200	46-38k Hz	86 dB	4Ω	1 x 6.5"
Polk XT15	48-40k Hz	86 dB	8Ω	1 x 5.25"
Polk XT20	38-40k Hz	87 dB	8Ω	1 x 6.5"
Polk R100	58-39k Hz	86 dB	8Ω	1 x 5.25"
Polk R200	51-38k Hz	86 dB	8Ω	1 x 6.5"
Polk R200 50th AE	51-38k Hz	86 dB	8Ω	1 x 6.5"
Polk RTi A1	60-26k Hz	89 dB	8Ω	1 x 5.25"
Polk RTi A3	50-26k Hz	89 dB	8Ω	1 x 6.5"
Polk ES10	78-40k Hz	84 dB	8Ω	1 x 4"
Polk ES15	44-40k Hz	85 dB	8Ω	1 x 5.25"
Polk ES20	41-40k Hz	86 dB	8Ω	1 x 6.5"
Polk S10	67-40k Hz	87 dB	8Ω	1 x 4"
Polk S15	50-40k Hz	88 dB	8Ω	1 x 5.25"
Polk S20	39-40k Hz	88 dB	8Ω	1 x 6.5"
Polk Audio T15	45-24k Hz	89 dB	8Ω	1 x 5.25"
Polk TSi100	61-24k Hz	89 dB	8Ω	1 x 5.25"
Polk TSi200	50-24k Hz	89 dB	8Ω	2 x 5.25"

Polk Audio Passive Floor-standing Speakers

Model	Frequency	Sensitivity	Impedance	Woofer
Polk L600	34-38k Hz	86 dB	4Ω	2 x 7"
Polk L800	32-38k Hz	87 dB	4Ω	2 x 10"
Polk XT60	38-40k Hz	86 dB	8Ω	1 x 6.5"
Polk XT70	35-40k Hz	86 dB	8Ω	2 x 6.5"
Polk R500	49-38k Hz	87 dB	8Ω	2 x 5.25"
Polk R600	43-38k Hz	88 dB	8Ω	2 x 6.5"
Polk R700	38-38k Hz	88 dB	8Ω	2 x 8"
Polk RTi A5	40-26k Hz	90 dB	8Ω	2 x 6.5"
Polk RTi A9	30-26k Hz	90 dB	8Ω	3 x 7"
Polk ES50	38-40k Hz	88 dB	8Ω	2 x 5.25"
Polk ES55	34-40k Hz	89 dB	8Ω	3 x 6.5"
Polk ES60	32-40k Hz	90 dB	8Ω	3 x 6.5"
Polk S50	33-40k Hz	89 dB	8Ω	2 x 5.25"
Polk S55	32-40k Hz	90 dB	8Ω	2 x 6.5"
Polk S60	26-40k Hz	90 dB	8Ω	3 x 6.5"
Polk Audio T50	35-40k Hz	89 dB	8Ω	2 x 6.5"
Polk TSi300	47-24k Hz	90 dB	8Ω	2 x 5.25"
Polk TSi400	44-24k Hz	91 dB	8Ω	3 x 5.25"

Polk Audio Powered Subwoofer Speakers

Model	Frequency	Amp Power	Woofer
Polk HTS 10	30-120 Hz	100 watts	1 x 10"
Polk HTS 12	28-120 Hz	200 watts	1 x 12"
Polk PSW10	40-160 Hz	50 watts	1 x 10"
Polk PSW125	32-225 Hz	150 watts	1 x 12"
Polk Monitor XT10	24-160 Hz	50 watts	1 x 10"
Polk Monitor XT12	24-160 Hz	50 watts	1 x 12"
Polk Signature Elite ES10	28-250 Hz	200 watts	1 x 10"
Polk Signature Elite ES12	22-250 Hz	300 watts	1 x 12"
Polk Signature Elite ES8	32-180 Hz	100 watts	1 x 8"

Polk Audio Passive Center Channel Speakers

Model	Frequency	Sensitivity	Impedance	Woofer
Polk TL1	125-20k Hz	89 dB	8Ω	2 x 2.5"
Polk CSi A6	55-26k Hz	90 dB	8Ω	2 x 6.5"
Polk L400	55-38k Hz	88 dB	4Ω	2 x 6.5"
Polk XT30	55-40k Hz	89 dB	8Ω	2 x 5.25"
Polk XT35	57-40k Hz	87 dB	8Ω	4 x 3"
Polk R300	65-38k Hz	87 dB	8Ω	2 x 5.25"
Polk Audio Reserve R350	75-35k Hz	87 dB	8Ω	4 x 4"
Polk R400	48-39K Hz	89 dB	8Ω	2 x 6.5"
Polk ES30	55-40k Hz	89 dB	8Ω	2 x 5.5"
Polk ES35	66-40k Hz	89 dB	8Ω	6 x 3"
Polk Audio T30	55-24k Hz	90 dB	8Ω	2 x 5.25"
Polk TSi CS10	63-24k Hz	91 dB	8Ω	2 x 5.25"

Polk Audio Passive In-wall Speakers

Model	Frequency	Sensitivity	Impedance	Woofer
Polk Audio 255c-LS	44-29kHz	91 dB	8Ω	2 x 5.25"
Polk Audio 255C-RT	50-25kHz	90 dB	8Ω	2 x 5.25"
Polk Audio 265 RT	45-25kHz	91 dB	8Ω	2 x 6.5"
Polk Audio 265-LS	28-33kHz	91 dB	8Ω	1 x 6.5"
Polk Audio 65 RT	50-25kHz	90 dB	8Ω	1 x 6.5"
Polk Audio RC55i	70-20kHz	89 dB	8Ω	1 x 5.25"
Polk Audio RC65i	60-20kHz	89 dB	8Ω	1 x 6.5"
Polk Audio RC85i	50-20kHz	90 dB	8Ω	1 x 8"

Polk Audio Passive Surround Speakers

Model	Frequency	Sensitivity	Impedance	Woofer
Polk Audio Monitor XT90	94-22k Hz	89 dB	8Ω	1 x 4"
Polk Audio Reserve R900	70-32k Hz	86 dB	8Ω	1 x 4"
Polk Audio Signature Elite ES90	142-26k Hz	85 dB	8Ω	1 x 5.25"

About Polk Audio

Polk Audio started in Baltimore in 1972 and grew into one of the defining mass-market American speaker brands. Its most interesting engineering was SDA, the Stereo Dimensional Array, which fed each channel a delayed and inverted portion of the other to cancel the crosstalk that reaches each ear from the wrong speaker - an attempt to give loudspeakers the channel separation headphones get for free. SDA models are still sought after and modified by enthusiasts.

Three Johns Hopkins graduates who started by building speakers for a Baltimore renaissance fair. Sandy Gross went on to co-found Definitive Technology and GoldenEar.

Polk is one of the American brands most people over forty had in the house at some point, which gives it a nostalgia value the specifications do not capture.

Part of Sound United; passed to Masimo in 2022 and to Harman in 2025.

Notable models: Monitor series, SDA SRS, RTi, Legend L100, Signature Elite.

Official Polk Audio website

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