The DIYSG HTM-12 v2 ranks #14 out of 84 total Large Size Bookshelf Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.
#14 DIYSG HTM-12 v2: Availability varies DIY Sound Group
Pros: Purpose-built high-output cinema kit pairing a 12-inch woofer with a compression driver in a large SEOS waveguide. Erin measured 91dB/2.83V/1m sensitivity, extraordinarily low distortion—still below 1% to about 60Hz at 102dB—and only about 0.5dB tweeter compression at the same level. Horizontal directivity is consistent and crossover integration is unusually good, so response corrections remain EQ-friendly. The benign impedance curve can be driven by many capable AVRs.
Cons: Erin measured F3 at approximately 67Hz, the normal efficiency/bass-extension tradeoff of a high-sensitivity 12-inch design, so a subwoofer is mandatory. A few narrow resonances appear in the response, impedance and decay plots; Erin suggested crossover/component investigation could improve them. Vertical radiation narrows around the crossover, the unfinished kit requires cabinet assembly and finishing, and its broad baffle is visually and physically substantial.
How it compares: Just above it: Wharfedale Aura 2 - 4Hz lower bass extension (-3dB). Just below it: KEF R3 - 5Hz lower bass extension (-3dB).
| Bass Extension (-3dB) | 67Hz (measured, Erin's Audio Corner) |
|---|---|
| Drivers | 12" woofer; compression driver in SEOS waveguide |
| Impedance | AVR-compatible impedance profile (measured, Erin's Audio Corner) |
| Sensitivity | 91dB/2.83V/1m (measured, Erin's Audio Corner) |
| Woofer Cabinet | ported |
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