What's causing violent woofer oscillations? - Page 3

espresso · 3rd September 2010, 06:26 PM

Thanks, I'll go through this. I suppose one TL074 does the trick here.

5th element · 3rd September 2010, 08:40 PM

Indeed, there's no point in using a more costly op amp at all in this application. One thing to bare in mind though, is that you will need a simple buffer stage before it.

head_unit · 10th September 2010, 07:20 AM

I think your amp is clipping (due to ultra boost), and losing all control/damping over the cone. Any frequencies below the port will especially resonate.

Big bass out of such a tiny enclosure and driver is simply not possible, especially at the price point this kind of stuff sells for. Sounds like an all-around poor implementation.

Start another thread, and maybe at Audio Asylum, for sub buying recommendations. Be sure to specify it's for a computer. I don't know offhand.

3rd September 2010, 08:40 PM	#22
5th element diyAudio Member Join Date: Oct 2002 Location: England	Indeed, there's no point in using a more costly op amp at all in this application. One thing to bare in mind though, is that you will need a simple buffer stage before it. __________________ What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Droggon Attack!

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3rd September 2010, 06:26 PM	#21
espresso diyAudio Member Join Date: Aug 2008	Thanks, I'll go through this. I suppose one TL074 does the trick here.

10th September 2010, 07:20 AM	#23
head_unit diyAudio Member Join Date: Feb 2004 Location: Los Angeles	I think your amp is clipping (due to ultra boost), and losing all control/damping over the cone. Any frequencies below the port will especially resonate. Big bass out of such a tiny enclosure and driver is simply not possible, especially at the price point this kind of stuff sells for. Sounds like an all-around poor implementation. Start another thread, and maybe at Audio Asylum, for sub buying recommendations. Be sure to specify it's for a computer. I don't know offhand.

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