Short answer: the AsciLab C6B. It ranks #6 of 222 bookshelf speakers by sound quality, rated 4.7/5, at $1,145; the Technics SB-C700 ranks #82, rated 4.0/5, and costs $1,699, so there is not much of a tradeoff to weigh.
The AsciLab C6B is the more accurate, deeper-bass choice. Bookshelf speakers with very accurate sound and an unusually wide, stable soundstage, for any seating position. Its measured preference score, a predictor of how neutral it sounds, is 6.33 against 5.11 for the Technics SB-C700. Its bass reaches about 54Hz before falling 3dB, against 85Hz for the Technics SB-C700. The tradeoff: Bass rolls off around 50Hz in-room (F3 54Hz, F10 35Hz), so a subwoofer is needed for real extension below that.
The case for the Technics SB-C700: Premium bookshelf speakers with a coaxial driver for focused imaging, very consistent sound around the room, and a rigid die-cast cabinet. The tradeoff: 85dB sensitivity paired with a 4-ohm nominal impedance wants a fairly capable amplifier.
Buy the AsciLab C6B. It is rated higher for sound quality than the Technics SB-C700 and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Passive Home rankings.
Bookshelf speakers with very accurate sound and an unusually wide, stable soundstage, for any seating position.
Premium bookshelf speakers with a coaxial driver for focused imaging, very consistent sound around the room, and a rigid die-cast cabinet.
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Specifications Side By Side
| AsciLab C6B | Technics SB-C700 | |
|---|---|---|
| Price | $1145 per pair | $1,699.00 per pair |
| Ranked | #6 of 222 in Large Size Bookshelf Speakers | #82 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) | 40.5Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 54Hz (measured, Erin’s Audio Corner) | 85.0Hz (measured, spinorama.org) |
| Dimensions | 15.7”H x 8”W x 10.4”D (398.8 x 203.2 x 264.2 mm) | 8.7” x 13.2” x 11.3” (220 x 336 x 286 mm) each |
| Impedance | 4 ohms nominal, 2.6 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 85.6dB (measured, Erin’s Audio Corner) | 85dB (2.83V/1m) |
| Drivers | 6” Aluminium Ceramic Cone with cast Aluminium Chassis woofer, 1” Aluminium Ceramic Dome tweeter | Coaxial “Phase Precision Driver”: 1.9cm dome tweeter + 16cm flat-diaphragm woofer |
| Weight | 18.5 lbs (8.4 kg) each | 18.7 lbs (8.5 kg) each |
| Woofer Cabinet | passive radiator | Bass reflex |
| Spinorama Preference Score | 6.33 | 5.11 |
| Spinorama Preference Score with Perfect Sub | 8.28 | 7.25 |
| DIY Kit | No | No |
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