TrueSpecs

Compare technical specifications (up to 4 speakers).

HiFi Ladder

Browse every speaker side by side, ordered by size or by price.

HiFi Search

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TrueScaleAudio

Compare speakers at true scale

Pick two speakers and see them side by side at their real-world size.

Speaker A
Speaker B
OverlaySide by side
Presentation mode
References

Front view — side by side at true scale

AMonitor Audio Radius 3BPolk Reserve R100
Monitor Audio Radius 3 front view
Polk Reserve R100 front view

Click either cabinet to swap A ↔ B · Reference height: 12.8 in · 1 in = 43.90 px

TrueSpecs presentation

Specifications

mm / kgin / lb
AB
ManufacturerMonitor AudioPolk
ModelMonitor Audio Radius 3 4GPolk Reserve R100
Height10 in12.8 in
Width5.9 in6.6 in
Depth7.9 in10.2 in
Weight8.2 lb12.1 lb
Enclosurebass-reflex-rearbass-reflex-rear
Drivers1× 1 in tweeter (C-CAM Gold Dome), 1× 4.5 in mid-bass (C-CAM RST III)1× 1 in tweeter (Pinnacle ring radiator), 1× 5.2 in mid-bass (Turbine cone)
Frequency — low44 Hz58 Hz
Frequency — high35000 Hz39000 Hz
Sensitivity84 dB86 dB
Impedance8 Ω4 Ω
Recommended amp40–75 W30–150 W
MAP (USD)$725 / pair$699 / pair
Where to buyCheck availability ↗Check availability ↗
Brand websitemonitoraudio.com ↗polkaudio.com ↗
Product pageOpen product page ↗Open product page ↗

Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.