Sub Xover HELP!

Axeman · 3rd April 2002, 02:40 PM

Hi all.

I'm a newbie, and I have a hacked together DIY home theater, in which I am using various amps to power the center, mains, surround and sub speakers. What I'm looking to build is an adjustable low-pass filter for my subwoofer. I currently have a simple one consisting of a single capacitor that works well enough, but I'm looking for something with a better slope and that will go down to 60hz or so. Any advice would be appreciated- even on non-adjustable filters.

Phil

CHRIS8 · 3rd April 2002, 04:34 PM

Just use line level crossovers to the amps.

If you are going for very low cost, take a look at: http://www.t-linespeakers.org/tech/f...ssiveHLxo.html

get out $5 bucks and get the parts you need at Radio Shack, be certain to use polyester capacitors. If you want better caps, I don't believe radio shack carries better ones. Go to www.digikey.com if you want polyproplyne, etc.

Or, you can build an active crossover, easy AND stable regardless of amplifier input impedance if you use an output buffer. Some good designs can be found at http://sound.westhost.com

-Chris

Axeman · 5th April 2002, 09:11 PM

Thanks for the help!

3rd April 2002, 02:40 PM	#1
Axeman diyAudio Member Join Date: Jan 2002 Location: Nova Scotia Canada	Sub Xover HELP! Hi all. I'm a newbie, and I have a hacked together DIY home theater, in which I am using various amps to power the center, mains, surround and sub speakers. What I'm looking to build is an adjustable low-pass filter for my subwoofer. I currently have a simple one consisting of a single capacitor that works well enough, but I'm looking for something with a better slope and that will go down to 60hz or so. Any advice would be appreciated- even on non-adjustable filters. Phil

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3rd April 2002, 04:34 PM	#2
CHRIS8 Account Disabled Join Date: Dec 2001 Location: VA, USA	Just use line level crossovers to the amps. If you are going for very low cost, take a look at: http://www.t-linespeakers.org/tech/f...ssiveHLxo.html get out $5 bucks and get the parts you need at Radio Shack, be certain to use polyester capacitors. If you want better caps, I don't believe radio shack carries better ones. Go to www.digikey.com if you want polyproplyne, etc. Or, you can build an active crossover, easy AND stable regardless of amplifier input impedance if you use an output buffer. Some good designs can be found at http://sound.westhost.com -Chris

5th April 2002, 09:11 PM	#3
Axeman diyAudio Member Join Date: Jan 2002 Location: Nova Scotia Canada	Thanks for the help!