The Polk Audio Reserve R400 ranks #36 out of 98 total Center Channel Speakers for sound quality. See all Passive Home rankings for every top pick.
Brand: Polk
Prices on this page were last checked October 5, 2026 at 10:21 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#36 Polk Audio Reserve R400: $559.00 Estimated Amazon eBay
Pros: Larger dual 6.5-inch Turbine cone drivers paired with Polk X-Port bass reflex design extend low frequencies down to 48Hz (-3dB). Higher 89dB sensitivity and substantial dynamic output for large home theaters.
Cons: Horizontal 2-way MTM driver layout narrows the ideal off-axis listening window for wide seating arrangements. Rating estimated based on Reserve R200/R600 measurements.
How it compares: Just above it: Klipsch RP-504C II - $59 cheaper, 7Hz higher bass extension (-3dB). Just below it: Dynaudio Evoke 25C - $840 more, 1Hz lower bass extension (-3dB).
| DIY Kit | No |
|---|---|
| Dimensions | 7.8”H x 24.2”W x 13.8”D (197 x 615 x 350 mm) |
| Drivers | 1” Pinnacle ring radiator tweeter, 2 x 6.5” Turbine cone woofers |
| Frequency Response | 48Hz - 39kHz (-3dB) |
| Impedance | 8 ohms nominal (4.1 ohms minimum) |
| Sensitivity | 89dB (2.83V/1m) |
| Weight | 32.8 lbs (14.9 kg) |
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- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.