Opus One 180W Active Subwoofer Amplifier Auto power on-of A2451

This completely self-contained amplifier module simply fits into the back of a subwoofer cabinet. The unit will automatically spring into life from its Standby mode once a signal is received. The Volume and Crossover Frequency Controls together with the Phase Correction Switch allows the sub-woofer to be set to the desired sound. Installation can be completed in just minutes, simply make a 235mmH x 175mmW cutout into the back of the enclosure and slip in the module. Overall depth is 100mm.

Features

• Auto power on/off with signal presence
• High and low-level inputs
• High-level outputs
• Volume control
• Short circuit output protection
• Active crossover variable from 20Hz - 200Hz
• Phase reversal switch

Recommended Project Idea:
Purchase an A 2451 and 2 x C 3088 8" Woofers. The ideal combination for a D-I-Y home theatre subwoofer. The 8" woofers employed to result in a compact enclosure that could easily fit behind or next to a couch. 

This project can be built to the following specifications: 
40-liter enclosure 
70mm diameter port 
100mm port length 

This results in a sub enclosure tuned to 45Hz.