SpeakersMFR-VERIFIED

Polk Audio Reserve R400

Polk Audio
Polk Audio Reserve R400

Price

$699
Best tracked price at Best Buy (checked 13 weeks ago)

Checked against your build

This page doesn’t know your build. Open the builder to check this part against the parts you’ve already picked.
Check it in the builder →

Where to buy

TRACKED RETAILER OFFERS
Best BuyCHECKED 13 WEEKS AGOFind it →
We may earn a commission at no cost to you; it never affects rankings or compatibility verdicts — those come from the data.

Specifications · per-field provenance

● SOURCE-TRACKED
Where we have it, each spec shows where the data came from.
Speaker typecenter channelManufacturer
Intended rolescenterManufacturer
Way configuration2-wayManufacturer
Woofer count2Manufacturer
Woofer size (in)6.5Manufacturer
Tweeter size (in)1Manufacturer
Impedance, minimum (Ω)4.1Manufacturer
Sensitivity (dB @ 1 W/1 m)89Manufacturer
Sensitivity measurement contextunstatedManufacturer
Frequency response, low (Hz)48Manufacturer
Frequency response, high (Hz)39000Manufacturer
Frequency response toleranceunstatedManufacturer
Recommended power, min (W)20Manufacturer
Recommended power, max (W)200Manufacturer
Enclosure typebass reflex portedManufacturer
Grille includedYesManufacturer
Height (in)7.8Manufacturer
Width (in)24.2Manufacturer
Depth (in)13.8Manufacturer
Weight (lbs)32.8Manufacturer
Sold aseachManufacturer

Common questions

ANSWERED FROM THE DATA

What receiver do you need to drive the Polk Audio Reserve R400?

The Polk Audio Reserve R400 is rated at 89 dB sensitivity (about average to drive) and dips to a stated 4.1Ω minimum — pick a receiver explicitly rated for 4Ω loads. Our free builder checks this against the exact parts in your build.

Computed from this product’s normalized, source-tracked fields — an unstated spec reads as “can’t check”, never as a yes or a no.
Check it against your build →

Guides for Speakers

BUYING ADVICE
The best bookshelf speakers for home theaterRead the guide →
4 ohm vs 8 ohm speakers: sensitivity and impedance, explainedRead the guide →
Speaker placement: the free upgrade most rooms are missingRead the guide →
Not sure it’s the right speaker for your room? Take the 60-second interview →