The JBL 708i ranks #113 out of 203 total Large Size Bookshelf Speakers for sound quality. See all Passive Home rankings for every top pick.
Brand: JBL
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#113 JBL 708i: $2,998 per pair B&H Photo Video eBay
Older model: the JBL LSR6332 (ranked higher, rated 4.3/5).
Pros: High-output 8-inch professional monitor with JBL’s compression driver and Image Control Waveguide. In JBL’s intended bi-amplified Crown DCI/DSP configuration, ASR data shows 39Hz extension, controlled roughly +/-50-degree horizontal coverage and a 6.21 preference score with a subwoofer. Measured bass extension of 43.9Hz (-3dB).
Cons: This is not self-powered: achieving the measured active-mode response requires compatible external amplification and JBL processing, adding substantial cost and complexity. On-axis smoothness (0.241), predicted in-room smoothness (0.198) and a 4.33 raw preference score are modest for the system price.
| Amplifier Power | External Crown DCI amplifier and JBL DSP required for measured active configuration |
|---|---|
| Bass Extension (-3dB) | 43.9Hz (measured active-mode, spinorama.org) |
| DIY Kit | No |
| Dimensions | 17.2H x 9.8W x 11.5D in |
| Drivers | 1” compression driver, 8” woofer |
| Enclosure | 2-way passive/bi-amplified, dual front ports |
| Impedance | 4 ohms nominal |
| Maximum SPL | 108dB continuous, 114dB peak |
| Sensitivity | 90dB (1W/1m) |
| Spinorama Preference Score | 4.33 |
| Spinorama Preference Score with Perfect Sub | 6.21 |
| Weight | 25.4 lbs (11.5 kg) each |
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