The KEF KUBE 12b delivers deep, powerful bass with a sealed cabinet design and 300 W Class D amplification. KEF’s iBX (Intelligent Bass Extension) algorithm extends bass depth dynamically, unlocking the full potential of the custom 12″ driver at all listening levels.
Configuration is straightforward with LFE, line-level, and speaker-level inputs, phase selection, and three DSP-controlled EQ settings to match the subwoofer to any room placement. As KEF designs, engineers, and assembles driver, cabinet, and circuitry in-house, the amplifier and driver are perfectly matched for accurate, controlled bass.
| Driver Size | 12″ (305 mm) |
|---|
| Amplifier | 300 W Class D |
|---|
| Frequency Range | 22 Hz – 140 Hz |
|---|
| Inputs | LFE, line-level, speaker-level |
|---|
| DSP EQ | 3 settings |
|---|
| Cabinet | Sealed |
|---|
| Power Consumption | 300 W |
|---|
| Standby Power | <0.2 W |
|---|
