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Old 15th March 2007, 11:20 PM   #1
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Default Summing Sides, Active Filter

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?!
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Old 15th March 2007, 11:25 PM   #2
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check out the active filter on diya. thread starter is bobellis.
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Old 15th March 2007, 11:27 PM   #3
mikee55 is offline mikee55  United Kingdom
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Default I do

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

Mikee55
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Old 15th March 2007, 11:32 PM   #4
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the sound.westhost one looks nice, but that does not filter tho right?
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