Short answer: the Monoprice Premium Select 8in 200-Watt. It ranks #46 of 73 subwoofers by sound quality, rated 3.2/5, at $224.99; the REL Acoustics Tzero MKIII ranks #73, rated 2.0/5, and costs $549, which makes this an easy call rather than a real tradeoff.
The Monoprice Premium Select 8in 200-Watt is the better-sounding choice. A low cost ported 8 inch subwoofer with a 200 watt amp, an easy entry point for a first subwoofer. The catch: Very compact 18.5 lbs (8.4 kg) size, limited 106.4 dB output, ported room interaction, and entry-level build.
The case for the REL Acoustics Tzero MKIII: A small sealed subwoofer that adds a little bass support to compact speakers without a full size cabinet. Watch for: Without a published 20 Hz output result, deep-bass capability is less certain than its midbass figure.
Buy the Monoprice Premium Select 8in 200-Watt. It is rated higher for sound quality than the REL Acoustics Tzero MKIII and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Subwoofers rankings cover every ranked option.
A low cost ported 8 inch subwoofer with a 200 watt amp, an easy entry point for a first subwoofer.
A small sealed subwoofer that adds a little bass support to compact speakers without a full size cabinet.
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Specifications Side By Side
| Monoprice Premium Select 8in 200-Watt | REL Acoustics Tzero MKIII | |
|---|---|---|
| Price | $224.99 | $549.00 |
| Ranked | #46 of 73 in Small Home Subwoofers (Under 30 lbs) | #73 of 73 in Small Home Subwoofers (Under 30 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 20 Hz | 51.3 dB | - |
| Output SPL at 25 Hz | 69.3 dB | 70.4 dB |
| Output SPL at 31.5 Hz | 91.8 dB | 76.6 dB |
| Output SPL at 40 Hz | 98.3 dB | 83.7 dB |
| Output SPL at 50 Hz | 104.8 dB | 89.7 dB |
| Output SPL at 63 Hz | 110.7 dB | 91.5 dB |
| Output SPL at 80 Hz | 111.8 dB | 92.1 dB |
| CEA-2010-A Average (40-80Hz) | 106.4 dB | 89.2 dB |
| Dimensions | 15”H x 10.6”W x 12.8”D (381.0 x 269.2 x 325.1 mm) | 9.5”H x 8.5”W x 10.5”D (241.3 x 215.9 x 266.7 mm) |
| Weight | 18.5 lbs (8.4 kg) | 15 lbs (6.8 kg) |
| Cabinet Color | black | black, white |
| Country | United States | United Kingdom |
| Measurement Source | Brent Butterworth | ErinsAudioCorner |
| Drivers | 8” (203mm) driver | 6.5” (165mm) driver |
| Warranty | 1 year | 3 |
| Output SPL at 100 Hz | - | 90.8 dB |
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