I just got my drivers, ordered a few switching power supplies and have a few old amps here to strip for transformers. However, I want to build an active sub, but require a low filter circuit diagram. I had a look on the web, but could not find something that I think are good. There is a processor on Elliott's page, but I prefer a sub that have a fairly flat response between 20 - 70/80. I do not care about variable frequencies, I just want to filter the 80 Hz plus frequencies.
Any ideas ?
Any ideas ?
