Description

Polk Audio R15 2-Way Bookshelf Speakers, Pair – Very Competent, Compact Budget Option.

Very-good-condition Polk Audio R15 2-way bookshelf speakers — compact, affordable bookshelves that carry several features normally found higher up the Polk range, including rubber woofer surrounds, front-firing ports, and 5-way binding posts that accept banana plugs, spades, and bare wire.

The R15s are a straightforward, enjoyable answer to “How can I afford good Polk speakers?” in a small room. A 3/4″ Dynamic Balance silk/polymer dome tweeter is paired with a 5-1/4″ Dynamic Balance composite woofer in a front-ported bass-reflex cabinet, giving clean, smooth highs and satisfyingly full mids and upper bass from a compact enclosure. Sensitivity is a useful 89 dB and nominal impedance is 8 ohms, so they’re easy to drive with virtually any receiver or integrated amp rated from about 20 watts per channel upward.

Each cabinet is video-shielded, making them safe to place near older CRT displays, and the front-firing port plus compact footprint gives good placement flexibility — on a shelf, on stands, or up against a wall. A keyhole slot on the back panel allows simple wall-mounting when used as surrounds in a home-theatre system. This pair is in very good cosmetic condition with only light signs of use and presents cleanly in a typical listening room.

Specifications:

Design: 2-way bass-reflex bookshelf speaker (front-ported)

Tweeter: 0.75″ Dynamic Balance silk/polymer dome

Woofer: 5.25″ Dynamic Balance composite cone with rubber surround

Frequency response: 65 Hz – 20 kHz (–3 dB); overall 60 Hz – 24 kHz

Sensitivity: 89 dB (1 W / 1 m)

Nominal impedance: 8 ohms

Recommended power: 20 – 100 watts per channel

Features: Video-shielded; keyhole slot for wall-mounting; 5-way binding posts

Finish: Black vinyl

Condition: Very Good

Dimensions per speaker (W x H x D): 6.5 x 10.7 x 7.3 inches (165 x 272 x 185 mm)

Weight per speaker: not officially published; typical examples are around 7–8 lbs each.

A very-good-condition pair of Polk Audio R15 bookshelf speakers — compact, easy-to-drive, and surprisingly capable for the price, equally at home as mains in a starter two-channel system for a small room or as surrounds in an entry-level or midrange surround setup.

Backed by Radique Audio’s 90-day warranty and our perpetual trade-back policy, you can purchase with confidence.

Additional information
Weight18 lbs
Dimensions11.3 × 19 × 14.7 in
About brand
Polk Audio at Radique
New Polk Audio, too, quoted direct from the Canadian distributor:
We service Polk, too. Bring us your own Polk speakers and subwoofers for repair, servicing or restoration (speakers up to 80 lbs each), with a 90-day warranty on the work. See our Audio Service page

Polk Audio began in Baltimore in 1972, founded by Matthew Polk, George Klopfer and Sandy Gross. Its SDA speakers of the 1980s used a cable between the left and right speakers to widen the stereo image. We carry Polk towers, bookshelf speakers, centre channels and subwoofers. We've had more than 180 Polk listings so far, covering more than 80 different models. Every used Polk here is inspected, tested and serviced as required, then photographed in-house and covered by our Bumper-to-Bumper Warranty and Perpetual Trade-Back Program. Looking for new Polk? We also quote new Polk Audio direct from the Canadian distributor, with free shipping within Canada: request a quote below. Don't see the model you want? Tell us on First Dibs and we'll email you when one arrives.

Our five best-selling Polk models so far: the RTi10 towers, the PSW10 and PSW125 subwoofers, the RTi4 bookshelf speakers and the CSi3 centre.

The Polk story, 1972 to today

Matthew Polk, George Klopfer and Sandy Gross, graduates of Johns Hopkins, founded Polk Audio in Baltimore, Maryland, in 1972. The Monitor 7 of 1974 was their first model to succeed, and the Monitor 10 followed in 1976.

SDA. In 1984 Polk introduced SDA (Stereo Dimensional Array). A cable between the left and right speakers lets each one cancel the sound that crosses over to the wrong ear, for a wider stereo image.

Growth. Polk went public in 1986 and moved to new premises in Baltimore. It began moving manufacturing to Tijuana, Mexico, in 1988, and by 2012 Stereophile reported that Polk designed in the US and built in China.

New owners. Directed Electronics agreed to buy Polk in 2006. Polk later became part of Sound United, Masimo bought Sound United in 2022, and in September 2025 HARMAN, a Samsung company, completed its purchase of Sound United. The 2018 Legend series brought SDA back.

Which Polk is which?

Monitor (1970s to early 1990s): the Monitor 4, 5, 7, 10 and 12, with A, B and C revisions.

SDA (1984 to about 1991): the SDA-1 and SDA-2 families, CRS, SRS and the later "TL" models.

RTA (1979 to 1992): towers such as the RTA 11t, with two woofers and two passive radiators.

RT and RTi (2001 onward): Polk's lower-priced lines. Our best-selling RTi10 towers and RTi4 bookshelf speakers come from here.

CSi centres and PSW subwoofers: the CSi3 centre and the PSW10 and PSW125 subwoofers are among the Polks we sell most.

LSi (about 2001 to 2010) and LSiM (2011): Polk's flagship lines of that decade, followed by Signature (2016), Legend (2018) and Reserve (2021).

Buying used Polk: what to check

SDA cable. SDA speakers need the interconnect cable between them for the SDA effect, and early SDA models need a common-ground amplifier. Make sure the cable comes with the pair.

Tweeters. Owners report that some SL3000 tweeters on the 1989 to 1991 SDA TL models leaked their ferrofluid and failed, and that Monitor-series pairs may carry mismatched factory or replacement tweeters. Check that every tweeter plays.

Surrounds. Some early Polks used foam surrounds, which rot with age; later models such as the RTA 11t and LSiM use rubber. Press gently on each woofer surround.

Everything we list is inspected, tested and serviced as required here, and comes with our warranty.