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Polk Reserve R100

Reserve series

The Polk Reserve R100 is a bookshelf speaker with 8 Ω impedance and 86 dB sensitivity. Every receiver and amp in our catalogue can drive it.

Impedance
8 Ω
What the receiver must be rated for
Sensitivity
86 dB
Higher is louder per watt
Amplifier power
30–150 W
Polk's recommendation
Bass extension
58 Hz
How low it plays

$699 a pair (MSRP, September 2026)

Check it with your receiverSee it in your room
3D model of the Polk Reserve R100

Drag to turn it. Built from the published dimensions, not a photo.

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Which receivers and amps can drive it?

What decides it is impedance: the Reserve R100 is 8 Ω, and the receiver or amp has to be rated for that.

  • Works

    Receivers and amps rated for 8 Ω

    29 in our catalogue

In its price range

All 29 receivers and amps we checked

Works29

Which center speaker matches it?

For the closest tonal match as voices move across the front, pick a center from the same Reserve series.

Plan your room around the Reserve R100.

Draw your room in 3D, place the Reserve R100 and see how they sound at your seat, with every connection to your receiver checked. Designing is free.

Build it in your room

Reserve R100 specifications

Impedance
8 Ω
Sensitivity
86 dB (2.83 V, 1 m)
Low end
58 Hz
Drivers
1 × 25 mm, 1 × 133 mm
Size
6×13×10 in
Recommended amplifier power
30–150 W
Weight
5.5 kg (12.1 lb)
MSRP
$699 a pair (MSRP, September 2026)

Every value comes from the sources under References, last retrieved September 15, 2026. To check it against the rest of your system, use the compatibility checker.

Questions about the Reserve R100

What receiver do I need for the Reserve R100?
One rated for 8 Ω speakers. In our catalogue, Denon AVR-S570BT, Emotiva BasX A-700 and Yamaha RX500A are rated to drive it.
Is the Reserve R100 4 ohm or 8 ohm?
The Polk Reserve R100 has a nominal impedance of 8 Ω. Use a receiver or amplifier rated down to 8 Ω or lower.
How much power does the Reserve R100 need?
Polk recommends an amplifier of 30–150 W. Its sensitivity is 86 dB (2.83 V, 1 m). How much of that you use depends on how far you sit and how loud you listen, which the 3D editor works out for your room.
How low does the Reserve R100 go?
The Polk Reserve R100 is rated down to 58 Hz. Below that, a subwoofer takes over; where the bass actually lands depends on your room's modes.
How big is the Reserve R100?
The Polk Reserve R100 measures 165 × 325 × 259 mm (6.5 × 12.8 × 10.2 in, width × height × depth) and weighs 5.5 kg (12.1 lb).

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References

  1. Polk Reserve R100: Owner's manual, polkaudio.com, retrieved September 15, 2026
  2. Polk Reserve R100: Manufacturer product page, polkaudio.com, retrieved September 15, 2026

Brand names are trademarks of their owners. Not affiliated with or endorsed by any manufacturer. 3D models are our approximations. Prices are manufacturer list prices (MSRP) as of the month shown. How we earn from buy links: affiliate disclosure.