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Floorstanding Speakers

Polk Audio Reserve Series Loudspeakers Unveiled

New Polk Audio Reserve Series loudspeakers are aimed at the next generation of audiophiles looking for affordable high-end sound.

Polk Audio Reserve Series Loudspeakers in walnut woodgrain finish

The market for affordable audiophile loudspeakers is heating up. Lately it’s been dominated by Klipsch, Q Acoustics, and Elac among many others. That increased level of competition for a new generation of buyers has resulted in a massive increase in performance — but also more affordable pricing. There has never been a better time to buy a pair of high-end loudspeakers.

Polk Audio hopes to take a huge slice out of the market with the launch of the new Reserve Series affordable audiophile-grade loudspeakers. The new lineup includes 9 models that are all competitively priced and engineered to deliver high-end sound quality. The level of transducer technology in this affordable range of loudspeakers is most certainly not the industry norm. Polk Audio seems intent on raising the performance bar and not giving an inch of ground to its competitors.

Polk Audio Reserve Series Home Theater R600, R900 and R350 in walnut woodgrain
R600 (tower), R900 (height) and R350 (slim center)

There are two bookshelf speakers, three towers, three center channels, and a height speaker for Dolby Atmos. At first blush, the Reserve Series can be used for dedicated two-channel listening or for home theater surround sound. Although there’s no subwoofer in the line-up — at least just yet.

What makes the Reserve Series interesting is they use the same custom-made transducers originally developed for Polk’s top-of-the-line Legend Series loudspeakers, but for nearly half the price of the Legends.

Polk Audio Reserve Series R200 no grille in walnut woodgrain on stands

The Reserve Series use the same custom-made transducers originally developed for Polk’s award-winning Legend Series loudspeakers. Featuring the proprietary Pinnacle Tweeter, Turbine Cone midrange and Polk’s latest bass-management and resonance control technologies—PowerPort® and X-Port—the Reserve Series delivers against Polk Audio’s signature quality sound at an approachable price.” Frank Sterns, President of Polk Audio

Polk Audio Reserve Series Port Cutaway

“You’d be wrong to think the Reserve Series is just ‘Legend-lite’ though. While Reserve does use the same transducers as Legend, it also features multiple new developments of its own, including a new patent-pending X-Port filter and advanced cabinet construction to minimize undesirable resonances. In return, you get a classic Polk Audio loudspeaker that is amazingly balanced, offers an expansive sound stage, detailed imaging, smooth mid-range and deep effortless bass.”Scott Orth, Director of audio and acoustical systems at Polk Audio

Seeking to retain as much of the Polk Legend flagship performance as possible within a moderately priced package, Polk Audio engineers created rigid, internally braced cabinets while leveraging driver and port technologies from the Legend Series speakers to achieve breathtaking levels of balance and realism. With a focus on every aspect of performance from music playback and home theater systems, Polk used—and created—multiple advanced technologies for the Reserve Series:

Pinnacle Ring Radiator Tweeters

Polk Pinnacle Ring Radiator Tweeter
Ring Radiator Tweeter

Decades of tweeter innovation, design and prototyping led to the development of the new 1-inch, high-definition Pinnacle ring radiator tweeter. Developed by Polk Audio, The Pinnacle tweeter features a finely tuned waveguide, which dramatically improves the dispersion of high frequency energy, ensuring a broad sweet spot, while the critically damped rear-chamber helps defeat unwanted resonances. This delivers ultra-clear, crisp highs without unwanted coloration or distortion. A Hi-Res certified driver, the Pinnacle Tweeter is designed for today’s two-channel music listening as well as multi-channel 3D audio found in music, movies, sports, and video games soundtracks.

Turbine Cone Midrange

Polk Audio Turbine Cone
Turbine Cone

The Turbine Cone cleverly combines Polk’s proprietary foam core driver design with molded Turbine geometry, which dramatically increases stiffness and damping without adding mass. This results in a smooth, detailed midrange across the entire bandwidth of the driver—the frequency range to which human ears are most sensitive.

X-Port Technology

Polk Audio X-Port Technology
X-Port Technology

The Reserve Series marks the debut of Polk Audio’s patent-pending X-Port technology, which uses a set of closed-pipe absorbers precisely tuned to eliminate unwanted cabinet and port resonances. X-Port is most beneficial to the lower mid-range, ensuring balanced, clean mid-bass for amazing detail and dynamics. X-Port is found on all vented models in the Reserve Series.

Power Port 2.0 Design 

Polk Power Port 2.0
Power Port 2.0

Power Port 2.0, found in the R600 and R700 floorstanding models, is a Polk-patented loudspeaker port application that enables bass frequencies to extend more deeply and at higher output levels than traditional ported speakers. The Power Port 2.0 combines the new X-Port and Enhanced Power

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Port design into a unique loudspeaker application. The port tube base was redesigned in aluminum and sits closer to the floor than previous Power Port designs for added performance characteristics and aesthetics.

Polk Audio Reserve Series R700 no grille in walnut woodgrain

Advanced Cabinet Construction: The R700 tower speaker model features advanced point-to-point bracing with new Cabinet Resonance Control technology (CRC) that eliminates panel resonances for enhanced detail and clarity.

Polk Audio Reserve Series R900 with grille in walnut woodgrain
R900 (wall-mounted height speaker)

Reserve Series are both IMAX® Enhanced and Hi-Res Audio Certified. Each loudspeaker in the lineup offers listeners flexibility in terms of configuration by incorporating matching transducers and consistent voicing. The center channel speakers are available in three sizes. The R300 center channel is designed to fit in most AV cabinets, while the R350 is only 5.5-inches tall, and is wall mountable so it can be used as left, right or center channel. For the first time, Polk is introducing a height module (R900), which can be placed on the floorstanding speakers or wall mounted. The height module features a toggle switch, which tunes the speaker for the application, whether that be on-speaker or wall mounted.

Polk Audio Reserve Series R300 Center Speaker no grille in walnut woodgrain
Polk Audio Reserve Series R350 Slim Center Speaker no grille in walnut woodgrain
R350 Slim Center

Price & Availability

All Polk Audio Reserve Series loudspeakers are currently available for purchase at, and in matte black, matte white and walnut woodgrain finish. Each speaker includes a 5-year warranty period.

Polk Audio Reserve Series Black

Specifications Comparison

MODELS R100R200R300R350R400R500R600R700R900
Speaker TypeStand-mountStand-mount CenterCenter (LCR)CenterTowerTowerTowerHeight
Ring Radiator
Turbine Cone
5¼”6½”2x 5¼”4x 4”2x 6½”2x 5¼”2x 6½”6½”4”
Woofers2x 8″
Overall Frequency Response44Hz – 50kHz39Hz – 50kHz45Hz – 50kHz50Hz – 50kHz36Hz – 50kHz32Hz – 50kHz30Hz – 50kHz30Hz – 50kHz50Hz – 50kHz 
(when wall mounted)
Frequency Response 
(-3dB limits)
58Hz – 39kHz51Hz – 38kHz65Hz – 38kHz75Hz – 35kHz48Hz – 39kHz49Hz – 36kHz38Hz – 38kHz38Hz – 37kHz70 – 32kHz 
(when wall mounted)
Recommended Amplifier Power30 – 150W30 – 200W30 – 200W25 – 200W20 – 200W25 – 200W25 – 200W20 – 300W45 – 100W
8Ω / 6Ω / 4Ω
Amplifier Compatibility
Minimum Impedance3.6Ω 3.8Ω3.8Ω3.9Ω4.1Ω3.9Ω4.0Ω3.6Ω4.2Ω
Sensitivity (2.83V/1m)86dB 86dB 86.5dB87dB 89dB 87dB 87.5dB SPL88dB SPL85.5dB SPL 
(when wall mounted)
Tweeter Crossover Frequency270030002200270025002500270027002100
Mid-range/Mid-bass Crossover Frequency1400350
WxHxD (mm)166 x 324 x 259.5190 x 359 x 353.8482.6 x 172 x 226.5762 x 141 x 187.5615 x 196.6 x 350255.4 x 1044.5 x 348.8280.7 x 1063.8 x 381.6320.7 x 1143.8 x 428.3166 x 158.3 x 320
WxHxD (inches)6.5 x 12.8 x 10.27.5 x 14.1 x 13.919 x 6.8 x 8.930 x 5.5 x 7.424.2 x 7.8 x 13.810.1 x 41.1 x 13.711 x 41.9 x 1512.6 x 45 x 16.96.5 x 6.2 x 12.6
Weight (each)12.2 lbs /5.5 kg19.1 lbs /8.7 kg16.8 lbs /7.6 kg20 lbs /9 kg32.8 lbs /14.9 kg39 lbs /17.7 kg47.3 lbs /21.579.1 lbs /35.9 kg6.6 lbs /3 kg
Shipping Weight28.4 lbs /12.9 kg43.4 lbs /19.7 kg19.8 lbs /9 kg23.7 lbs /10.8 kg39.5 lbs /17.9 kg49.6 lbs /22.5 kg58.2 lbs /26.4 kg94.4 lbs /42.8 kg16 lbs /7.3 kg
Mid-Range Enclosure TypeSealed
Mid-Bass / Woofer Enclosure TypeRear ETF PortRear ETF PortSealedSealedDual Rear ETF PortsRear ETF PortFloor Firing Power Port with ETFFloor Firing Power Port with ETFSealed
White FinishYYYYYY
FeetRubber padsRubber padsRubber padsRubber padsRubber padsSpike and PadSpike and PadSpike and PadWall-mountable
Nickel-plated 5-way binding postsSingle Single Single Single Single Single Single Dual Single
Designed for R900 Height SpeakerNoYesN/AN/AN/AYesYesYesN/A
Hi-Res CertifiedYesYesYesYesYesYesYesYesYes
IMAX CertifiedNoNoNoNoYesYesYesYesN/A
Polk Audio Reserve Series R100 Bookshelf Speaker rear in walnut woodgrain
Designed & Engineered in the USA. Manufactured in China.
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