Short answer: the Technics SB-C700 for better sound quality, the JBL Studio 630 for the lower price. The Technics SB-C700 ranks #49 of 105 bookshelf speakers at $1699. The JBL Studio 630 ranks #61 at $699, $1000 cheaper.
On the Technics SB-C700 side: Distinctive coincident “Phase Precision Driver”: a 1.9cm dome tweeter mounted at the exact acoustic center of a 16cm flat-diaphragm carbon-fiber/honeycomb-sandwich woofer, giving true point-source geometry. Set against that: 85dB sensitivity paired with a 4-ohm nominal impedance wants a fairly capable amplifier.
What the JBL Studio 630 offers: Excellent directivity linearity: harmonics of the same instrument stay collocated in the soundstage instead of drifting between positions, giving precise, stable imaging that holds up well into higher frequencies where many speakers start to beam and narrow. Watch for: Noticeable mid-range dip/scoop relative to the higher frequencies - not dramatic, but audibly “missing” something by the second or third track.
Buy the Technics SB-C700 if sound quality matters more than the price. Buy the JBL Studio 630 if the price matters more than sound quality.
Specifications Side By Side
| Technics SB-C700 | JBL Studio 630 | |
|---|---|---|
| Price | $1,699.00 | $699 |
| Ranked | #49 of 105 in Large Size Bookshelf Speakers | #61 of 105 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 40.5Hz (measured, spinorama.org) | 37.0Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 85.0Hz (measured, spinorama.org) | 54.2Hz (measured, Erin’s Audio Corner) |
| Dimensions | 8.7" x 13.2" x 11.3" (220 x 336 x 286 mm) (8.7 x 13.2 x 11.3 in) each | 14-13/16"H x 9"W x 11-5/16"D |
| Impedance | 4 ohms | 6 ohms nominal, 4.7 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85dB (2.83V/1m) | 83.2dB (measured, Erin’s Audio Corner; 85dB manufacturer specified) |
| Drivers | Coaxial "Phase Precision Driver": 1.9cm dome tweeter + 16cm flat-diaphragm woofer | 6.5" PolyPlas cone woofer, 1" compression driver (2414H-1) with waveguide |
| Weight | 18.7 lbs / 8.5 kg (18.7 lb) each | 19.9 lbs each |
| Woofer Cabinet | Bass reflex | - |
| Frequency Response | - | 45Hz - 40,000Hz (manufacturer specified) |
| Power Handling | - | up to 150W |
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- ELAC DBR62 vs Technics SB-C700
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The Two Speakers In Full
Technics SB-C700: $1,699.00 Value Electronics USA Tube Audio
Pros: Distinctive coincident “Phase Precision Driver”: a 1.9cm dome tweeter mounted at the exact acoustic center of a 16cm flat-diaphragm carbon-fiber/honeycomb-sandwich woofer, giving true point-source geometry. Directivity is unusually symmetric front-to-back and top-to-bottom (both horizontal and vertical average exactly 60°) and spdi_stddev (3.09) is tight for the passive-large tier. Die-cast aluminum chassis and a high-gloss convex “Entasis form” cabinet with side panels up to 42mm thick for extra rigidity.
Cons: 85dB sensitivity paired with a 4-ohm nominal impedance wants a fairly capable amplifier. Bass extension is shallow relative to its 6.5”-class woofer at -3dB (85.0Hz), though it reaches a more usable 40.5Hz at -10dB - a fairly steep low-end rolloff shape once past the reference band. At $1,699.99/pair, some in the ASR community have questioned the value proposition against similarly-measuring alternatives at lower prices.
Full Technics SB-C700 review and specifications →
| Bass Extension (-10dB) | 40.5Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 85.0Hz (measured, spinorama.org) |
| Dimensions | 8.7" x 13.2" x 11.3" (220 x 336 x 286 mm) (8.7 x 13.2 x 11.3 in) each |
| Drivers | Coaxial "Phase Precision Driver": 1.9cm dome tweeter + 16cm flat-diaphragm woofer |
| Impedance | 4 ohms |
| Sensitivity | 85dB (2.83V/1m) |
| Weight | 18.7 lbs / 8.5 kg (18.7 lb) each |
| Woofer Cabinet | Bass reflex |
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- Technics SB-C700 vs Definitive Technology Demand D11
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JBL Studio 630: $699 Amazon
Pros: Excellent directivity linearity: harmonics of the same instrument stay collocated in the soundstage instead of drifting between positions, giving precise, stable imaging that holds up well into higher frequencies where many speakers start to beam and narrow. Good compression behavior - mid-bass stays taut and controlled from low to high volume without the sound falling apart or distorting as you turn it up. A pleasant, controlled mid-bass bump in the 60-100 Hz range adds punch to kick drums without bleeding into an uncontrolled boom on bass guitar. Horizontal radiation holds steady off-axis (about ±60°), so toe-in isn’t fussy. Compared directly to its predecessor, the JBL Studio 530, the reviewer would pick the 630 - smoother trend line through the upper mids and treble, and likely more dynamic headroom - as long as you’re willing to EQ.
Cons: Noticeable mid-range dip/scoop relative to the higher frequencies - not dramatic, but audibly “missing” something by the second or third track. Some tracks read as forward or aggressive around 2 kHz, like the upper frequencies are jumping out at you rather than sitting in stage depth. Needs EQ to bring the mid-range back up to be fully recommendable; without EQ available, the reviewer says he’d look at a different speaker entirely. Measured sensitivity (about 83.2dB) runs noticeably below the 85dB manufacturer spec, likely a byproduct of the mid-range dip skewing the average downward.
Full JBL Studio 630 review and specifications →
| Bass Extension (-10dB) | 37.0Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 54.2Hz (measured, Erin's Audio Corner) |
| Dimensions | 14-13/16"H x 9"W x 11-5/16"D |
| Drivers | 6.5" PolyPlas cone woofer, 1" compression driver (2414H-1) with waveguide |
| Frequency Response | 45Hz - 40,000Hz (manufacturer specified) |
| Impedance | 6 ohms nominal, 4.7 ohms minimum (measured, Erin's Audio Corner) |
| Power Handling | up to 150W |
| Sensitivity | 83.2dB (measured, Erin's Audio Corner; 85dB manufacturer specified) |
| Weight | 19.9 lbs each |
As an eBay Partner, we may be compensated if you make a purchase.
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