Polk Audio Reserve R900 is a 2-way Passive Surround speaker by Polk Audio. It was released in 2022. It features a 0.75" Ring Radiator Tweeter and 1 x 4" Woofer. The speaker has a frequency range of 70-32k Hz and a sensitivity of 85.5 dB. Polk Audio Reserve R900 has an MSRP of 599$ per pair but can often be found around 0$ per pair.
Polk Audio's Reserve Series of Loudspeakers
Reserve R900 is a member of Polk Audio's Reserve series of Passive speakers. The Reserve range is Polk Audio's high-value step-up line, with Pinnacle tweeter and Power Port technology from the flagship Legend series. Below you can see the main specs of these speakers.
See all 10 Polk Audio Reserve models compared »
Polk Audio Reserve Series Speakers
Frequency Response of the Polk Audio Reserve R900 Speaker
Polk Audio Reserve R900 has a Frequency response range of 70-32k Hz. With a minimum frequency of 70 Hz, it is hard to expect a strong bass response from Reserve R900 so depending on your use case, using a subwoofer will significantly help to widen the response range.
Here we have a comparison of how Reserve R900's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Surround Speakers
Thinking about a subwoofer for the Polk Audio Reserve R900?
Impedance and Sensitivity
Polk Audio Reserve R900's nominal impedance level is
8 ohms and has a sensitivity of
85.5 dB.
Sensitivity
Surround Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Polk Audio Reserve R900 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
With a sensitivity level of only 86 dB, Polk Audio Reserve R900 is a difficult to drive speaker from Sensitivity perspective, make sure to choose an amplifier with a high output if you like listening to your music at high volume levels. You may especially have a hard time using Tube amplifiers which are traditionally very low power compared to Class A/B or Class D amps. Work out how loud the Polk Audio Reserve R900 plays in your room →
What amplifier does the Polk Audio Reserve R900 need?
At normal listening levels in a medium room, about
19–300 W
per channel into 8 ohms.
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Input Type
Reserve R900 features Binding post type connectors.
Work out what gauge speaker cable this run needs →
Polk Audio Reserve R900 External Dimensions and Weight
Polk Audio Reserve R900 has external dimensions of (Height x Width x Depth) (158.8 x 166.7 x 320.7mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Polk Audio Reserve R900 is approximately 534.6cm2 / 82.9inch2.
Millimetres are hard to picture, so here is the Polk Audio Reserve R900 drawn to scale next to the Polk R600, the speaker our readers compare it with most often.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
Polk R600 needs about 100% more floor or shelf area. Polk R600 is 61mm deeper, so it stands that much further out from the wall. Polk R600 is 905mm taller.
Full comparison: Polk Audio Reserve R900 vs Polk R600 ›
Find speakers that fit your shelf or alcove →
WeightThe Polk Audio Reserve R900 weighs 2.99kg / 6.6lbs per piece. Here is a comparison of how Reserve R900's weight compares with the average, max and min weights in its class.
Weight
All Surround Speakers
Weight
Surround Speakers under $750
Available colors
Polk Audio Reserve R900 is available in Black.
Recommended Accessories
Here is a list of accessories that we think you may need for the Polk Audio Reserve R900.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.