HansHolland
Active Member
WAIT:From my B&W AS2 subwoofer manual:
View attachment 195117
"For 2-channel operation, use speaker level rather than line level connections. The subwoofer presents a high impedance load to the stereo power amplifier and takes very little current, so may be connected in parallel with the main speakers with no adverse effects."
So you can connect a subwoofer using speaker wire from the speaker terminals of the subwoofer to the speaker terminals of your amp, in parallel with your speakers. A powerful amp like this one from Audiophonics should have no problem supplying power to both the speakers and the subwoofer.
This will only work if the minus outputs of the amp are at ground level and/or the inputs of the subwoofer have a differential input stage!
Otherwise you are shorting the outputs of your power amp.