Short answer: the DIYSG HT-10 for better sound quality, the GR-Research Klipsch RP-600M Upgrade for the lower price. The DIYSG HT-10 ranks #168 of 222 bookshelf speakers, rated 3.3/5, at $496. The GR-Research Klipsch RP-600M Upgrade ranks #179, rated 3.2/5, at $279, $217 cheaper.
Why pick the DIYSG HT-10: A budget DIY flat pack kit with a 10 inch woofer and compression tweeter, built for home theater front or surround duty. Watch for: On-axis deviation of 0.537dB is rough, with a pronounced -0.43dB per octave downward tilt giving it a notably dark tonal character, a somewhat resonant bass-alignment Q of 1.76, and the Harman in-room bass extension estimate is a modest 56Hz for a 10” woofer.
The GR-Research Klipsch RP-600M Upgrade is the more accurate option. A DIY crossover kit that fixes the main flaw of a popular Klipsch bookshelf speaker, with smoother sound and all new parts. Its measured preference score, a predictor of how neutral it sounds, is 5.11 against 4.26 for the DIYSG HT-10. The catch: This is a DIY kit, not a finished speaker: you need a pair of the original Klipsch RP-600M, which is discontinued, and must rebuild both crossovers yourself.
Buy the DIYSG HT-10 if sound quality is the priority over the price, or the GR-Research Klipsch RP-600M Upgrade if the price is the priority over sound quality.
Looking for alternatives? See the complete Passive Home rankings.
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Specifications Side By Side
| DIYSG HT-10 | GR-Research Klipsch RP-600M Upgrade | |
|---|---|---|
| Price | $496 per pair | $279 per pair |
| Ranked | #168 of 222 in Large Size Bookshelf Speakers | #179 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | about 44.9Hz (measured, Spinorama data) | 40.0Hz (measured, spinorama.org ASR data) |
| Enclosure | Ported, MDF flat-pack cabinet kit | - |
| Drivers | Celestion TF1020 10” woofer, Celestion CDX1-1445DA compression tweeter | 6.5” Cerametallic cone woofer, 1” titanium LTS vented tweeter with Tractrix horn (stock Klipsch RP-600M drivers) |
| Dimensions | 15W x 19.5H x 9D in | 15.7”H x 8”W x 11.9”D (398.8 x 203.2 x 302.3 mm) |
| Weight | approx. 28 lbs (12.7 kg) assembled | 16.1 lbs (7.3 kg) each |
| Country | United States (kit design) | - |
| Spinorama Preference Score | 4.26 | 5.11 |
| Spinorama Preference Score with Perfect Sub | 6.80 | 7.06 |
| Sensitivity | 91.3dB (measured average 300Hz-3kHz @ 2.83V/1m, spinorama.org); 95dB manufacturer specified | 86.7dB (measured, Audio Science Review) |
| Impedance | 8 ohms | - |
| Bass Extension (-3dB) | 73.4Hz (measured, spinorama.org) | 68.8Hz (measured, spinorama.org ASR data) |
| DIY Kit | Yes | Yes |
| Woofer Cabinet | - | ported |
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