Audio Project Amplifier Speaker Loudspeaker Kit
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Summing Sides, Active Filter - Click HERE for Original Thread
hernanstafe
I'm working in a subwofer and i was wondering if anyone had the schematics and pcb for a sub preamp/filter which sums up both channels cause i've looked for it and i can't find it! I found some on the site but some of the people there say they don't really work, does anyone has one that actually works?!
mpmarino
check out the active filter on diya. thread starter is bobellis.
mikee55
http://sound.westhost.com/project71.htm

Figure 1 - Input Mixer and Phase Switch is what I think you need. Its working for me in the lounge with the Transform and I have a 24 db(12 variable 12 fixed),lowpass inbetween the two. My amp doesn't have the muscle though:D

Mikee55:)
hernanstafe
the sound.westhost one looks nice, but that does not filter tho right?

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