Short answer: the ELAC SUB1010. It ranks #36 of 73 subwoofers by sound quality (rated 3.3/5) at $550 and is still sold new; the Monoprice Monolith 8 THX Certified ranks #66 (rated 2.7/5) and is discontinued, so it is only an option used.

The ELAC SUB1010 is the better-sounding choice. An affordable compact 10 inch ported subwoofer that adds bass weight to a modest room or a first 2.1 setup. Watch for: Deep-bass output is limited compared with larger subwoofers, with 96.5dB measured at 31.5Hz, so it is not the right choice for demanding home-theater effects or a large room.
Why pick the Monoprice Monolith 8 THX Certified: A compact THX certified 8 inch subwoofer with selectable modes, sized for a small room or satellite system. The catch: Deep-bass output is modest for a home-theater subwoofer, falling to 72.9dB at 20Hz and 86.1dB at 25Hz.
Buy the ELAC SUB1010. It is rated higher for sound quality and still sold new, while the Monoprice Monolith 8 THX Certified is discontinued.
Looking for alternatives? See the complete Subwoofers rankings.
An affordable compact 10 inch ported subwoofer that adds bass weight to a modest room or a first 2.1 setup.
A compact THX certified 8 inch subwoofer with selectable modes, sized for a small room or satellite system.
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Specifications Side By Side
| ELAC SUB1010 | Monoprice Monolith 8 THX Certified | |
|---|---|---|
| Price | $550 | $350 Discontinued |
| Ranked | #36 of 73 in Small Home Subwoofers (Under 30 lbs) | #66 of 73 in Small Home Subwoofers (Under 30 lbs) |
| Enclosure | ported, rear | ported |
| Output SPL at 31.5 Hz | 96.5 dB | 93.2 dB |
| Output SPL at 40 Hz | 102.7 dB | 96.9 dB |
| Output SPL at 50 Hz | 107.0 dB | 99.3 dB |
| Output SPL at 63 Hz | 110.8 dB | 100.7 dB |
| Output SPL at 80 Hz | 111.9 dB | 101.6 dB |
| Output SPL at 100 Hz | 111.2 dB | 101.9 dB |
| Output SPL at 125 Hz | 109.5 dB | - |
| CEA-2010-A Average (40-80Hz) | 108.1 dB | 99.6 dB |
| Dimensions | 14.8”H x 12.2”W x 12.2”D (376.2 x 309.4 x 309.4 mm) | 12.6”H x 13.5”W x 12.6”D (319.8 x 342.9 x 319.8 mm) |
| Weight | 21.8 lbs (9.9 kg) | 19.8 lbs (9.0 kg) |
| Warranty | 3/1 | - |
| Cabinet Color | black | black |
| Country | Germany | United States |
| Measurement Source | ErinsAudioCorner | ErinsAudioCorner |
| Drivers | 10” (254mm) driver | 8” (203mm) driver |
| Output SPL at 20 Hz | - | 72.9 dB |
| Output SPL at 25 Hz | - | 86.1 dB |
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