REL makes a series of subwoofers that use speaker-level inputs on SpeakON connectors. This video shows how these should be connected to an AHB2 power amplifier.
Written instructions and diagrams can be found here:
REL Subwoofers with AHB2 Power Amplifier – Benchmark Media Systems
The Benchmark AHB2 Power Amplifier
- Radically Different Topology
- Hi-Frequency Fully-Regulated Switched-Mode Power Supply
- Linear Class-AB output Stage with Class-H Tracking Rails
- Much more Efficient than a Traditional Class-AB Amplifier
- Feed-Forward Error Correction
- Correction Amplifier is Passively Summed with the Main Amplifier
- No Magnetic Interference
- No Relays in Output Stage
- Protection Circuits are not in Series with Output Path
- Low Gain Design
- Tweeter Protection
- 0.1 Hz to 250 kHz Bandwidth
- Stable into Inductive and Capacitive Loads
- Stable into Very Low Impedances
- 135 dB SNR
- THD is Better Than -110 dB at Full Output Power
