The HSU Research CCB-8 ranks #124 out of 131 total Large Size Bookshelf Speakers for sound quality. See all Passive Home rankings for every top pick.
Brand: HSU Research
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#124 HSU Research CCB-8: $699 per pair HSU Research eBay
Pros: Legitimately good midrange and mid-bass punch below about 1kHz, with in-room bass extension to about 60-70Hz that’s impressive for an 8” coaxial driver running this high a sensitivity (~90dB measured). Wide horizontal dispersion (~55 degrees) that holds up reasonably well off-axis. Measured bass extension of 65Hz (-3dB), with a measured sensitivity of 90.4dB.
Cons: Badly unbalanced top end that the reviewer called ‘just a terrible speaker’ outright - a roughly 7dB peak-dip swing in the upper mid/treble causes real listening fatigue regardless of listening angle (tried on-axis, 15 degrees off, and 30 degrees off, all bad). Resonances around 600Hz and 1.2kHz plus erratic high-frequency behavior hurt imaging noticeably. Would need 9 bands of EQ to get close to flat, and even then two dips near 2kHz and 8kHz are baked into the crossover and can’t be fixed with EQ at all - the reviewer’s verdict was simply to skip it.
How it compares: Just above it: Chesky LC1 - $301 more, 9Hz lower bass extension (-3dB). Just below it: JBL 4319 - $3301 more, 0.9Hz lower bass extension (-3dB).
| Bass Extension (-10dB) | 52Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 65Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15” x 10.5” x 12” (381 x 267 x 305 mm) |
| Drivers | 8” coaxial driver, constant-directivity horn tweeter |
| Frequency Response | 50Hz - 20kHz (+-2dB at 15 degrees off-axis, Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Recommended Power | 10-400W RMS per channel |
| Sensitivity | 90.4dB (2.83V/1m, measured by Erin’s Audio Corner) |
| Spinorama Preference Score | 1.62 |
| Spinorama Preference Score with Perfect Sub | 4.04 |
| Weight | 22 lbs (10 kg) each |
| Woofer Cabinet | Vented |
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