Description
KEF Reference 8b Subwoofer
For power with accuracy the Reference 8b sub has two 500W Class D amplifiers, each driving a 228mm (9 inch) long-throw, ultra-low distortion driver. These are connected back-to-back in a heavily braced, acoustically inert cabinet. The result is low distortion bass with effortless body and weight.
Specifications:
| Model | REFERENCE 8b |
| Design | Force cancelled closed box |
| LF Drive unit | 2 x 225 mm (9in.) |
| Frequency range at 90dB output in free-space mode (-6dB) | 18Hz |
| Frequency response at 90dB output in free-space mode (±3dB) | 24Hz |
| Amplifier | 2 x 500 W Class D with switched mode power supply and DSP based control section |
| Maximum output (peak sound pressure level at 1m 50Hz) |
110dB |
| Low pass filter variable | Variable frequency: 40Hz to 160Hz Variable slope: 12dB/oct, 18dB/oct, 24dB/oct LFE mode: 350Hz, 18dB/oct |
| Inputs | RCA phono sockets Analog XLR socket Speaker level inputs |
| Link out | RCA phono socket |
| Net internal volume | 23L |
| Weight | 35kg (77.2lbs.) |
| Dimensions (H x W x D) | 398 x 365 x 429 mm (15.7 x 14.4 x 16.8 in.) |
| Power requirements | 100V – 120V / 220V – 240V ~50/60Hz |
| Power consumption | 1000W |
| Finishes | Deep Piano Black |
