Hello!
Last night i was having issues sleeping and, as usual, I started pondering ideas for projects...
I have wanted to build an all active loudspeaker for some time but just never got around to it, I didn't like the idea of having to build 4+ amplifiers on seperate pcbs as well as piecing together an active xo circuit...
My idea is this: A gainclone pcb consisting of 4 lm3875 or lm3886 chip amps and a 2 way active crossover (Stereo pcb, so, 1 gainclone per driver). The Resistors and capacitors for said active XO would reside on a small cartridge, so, 1 pcb with the chip amps and PSU circuit and another pcb with the resistors and caps for the active XO.
So, whenever i want to make a new crossover for a new set of speakers all i have to do is calculate the values ,solder some caps and resistors to a cartridge, and plug it in.
Neat eh?
When i get home i'm gonna start working out a pcb.
If there is enough interest in this then i will certainly look into having these produced in quantity...
Last night i was having issues sleeping and, as usual, I started pondering ideas for projects...
I have wanted to build an all active loudspeaker for some time but just never got around to it, I didn't like the idea of having to build 4+ amplifiers on seperate pcbs as well as piecing together an active xo circuit...
My idea is this: A gainclone pcb consisting of 4 lm3875 or lm3886 chip amps and a 2 way active crossover (Stereo pcb, so, 1 gainclone per driver). The Resistors and capacitors for said active XO would reside on a small cartridge, so, 1 pcb with the chip amps and PSU circuit and another pcb with the resistors and caps for the active XO.
So, whenever i want to make a new crossover for a new set of speakers all i have to do is calculate the values ,solder some caps and resistors to a cartridge, and plug it in.
Neat eh?
When i get home i'm gonna start working out a pcb.
If there is enough interest in this then i will certainly look into having these produced in quantity...
komen said:I don't see any other problem than increased lead length compared to normal XO circuit. Is it real problem or not? I don't have enough experience tell you that, but long leads can allways pick up noise and can contribute to oscillations.
The leads could be kept pretty short...and i would ensure that there is really good conductivity through the connectors...
owen said:Or of course you find a Behringer 2496 digital crossover and have more crossovers at your finger tips than you could possible imagine....
Owen
But that takes the fun out of it
Plus aren't those kind of expensive in comparison to a diy active amp? Granted, in the long run if you plan on building a sh*tload of speakers, then, yeah, i could see the digital XO an okay idea...
But if you only plan on building a few for personal use then this seems like something that would be handy...
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