LM3886 in biamping?

ratza · 20th December 2007, 02:36 PM

Hello people,

I made a pair of TQWP few months ago with some junk full range car speakers and now I want to change them with something better from PAudio. Now the problem is that the passive filters will cost me more than if I biamp with LM3886 and I already have made one amp with these chips (which sounds very good, by the way). Should I biamp or should I go with passive filters? Which variant is better?

AndrewT · 20th December 2007, 05:05 PM

hi,
read Linkwitz & ESP sites to gain idea of how much work is involved in developing both passive and active crossovers.

ratza · 25th December 2007, 11:20 AM

Sorry for this delayed response, I was out of the city. I already read the articles on the ESP site, but I was curious if someone actually built a system with these chips. Anyway, I'll do the both variants and tell if there are major differences. Thanks for the advice, though.

Nuuk · 25th December 2007, 12:27 PM

If you mean has anybody done bi-amping with chips then the answer is yes, lot's of us! ;-)

Here is my current four-channel LM3875 used for bi-amping.

ratza · 29th December 2007, 04:23 PM

Duh... I should've asked this from the start. So... until I finish the amp and get the speakers: how does your amp sound compared to classic passive crossovers?

Nuuk · 29th December 2007, 06:04 PM

I am using passive crossovers at present but bi-amping them until I find a suitable 'box' for the active crossovers!

gainphile · 3rd January 2008, 10:09 AM

I just built this last week, using 4 gainclones to drive a pair of 2-way speakers. Directly to the woofer, and 22uF to tweeter for protection only -- so no passive component.

I tell you the amount of time I did on enhancing my passive crossover before was a TOTAL WASTE of money and time

The cost to build P09 was $50 using 'permanent bread board' and additional $50 for additional pair of gainclones really blew me away. I use cheap TL072 as suggested and it does not degrade the sound whatsoever.

http://gainphile.blogspot.com/2007/1...gainclone.html

20th December 2007, 02:36 PM	#1
ratza diyAudio Member Join Date: Dec 2007 Location: Sibiu, Romania	LM3886 in biamping? Hello people, I made a pair of TQWP few months ago with some junk full range car speakers and now I want to change them with something better from PAudio. Now the problem is that the passive filters will cost me more than if I biamp with LM3886 and I already have made one amp with these chips (which sounds very good, by the way). Should I biamp or should I go with passive filters? Which variant is better? __________________ Any solution is a compromise.

20th December 2007, 05:05 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	hi, read Linkwitz & ESP sites to gain idea of how much work is involved in developing both passive and active crossovers. __________________ regards Andrew T.

25th December 2007, 11:20 AM	#3
ratza diyAudio Member Join Date: Dec 2007 Location: Sibiu, Romania	Sorry for this delayed response, I was out of the city. I already read the articles on the ESP site, but I was curious if someone actually built a system with these chips. Anyway, I'll do the both variants and tell if there are major differences. Thanks for the advice, though. __________________ Any solution is a compromise.

25th December 2007, 12:27 PM	#4
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	If you mean has anybody done bi-amping with chips then the answer is yes, lot's of us! ;-) Here is my current four-channel LM3875 used for bi-amping. __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

29th December 2007, 04:23 PM	#5
ratza diyAudio Member Join Date: Dec 2007 Location: Sibiu, Romania	Duh... I should've asked this from the start. So... until I finish the amp and get the speakers: how does your amp sound compared to classic passive crossovers? __________________ Any solution is a compromise.


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29th December 2007, 06:04 PM	#6
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	I am using passive crossovers at present but bi-amping them until I find a suitable 'box' for the active crossovers! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

3rd January 2008, 10:09 AM	#7
gainphile diyAudio Member Join Date: Dec 2007 Location: Melbourne the sunny city!	I just built this last week, using 4 gainclones to drive a pair of 2-way speakers. Directly to the woofer, and 22uF to tweeter for protection only -- so no passive component. I tell you the amount of time I did on enhancing my passive crossover before was a TOTAL WASTE of money and time The cost to build P09 was $50 using 'permanent bread board' and additional $50 for additional pair of gainclones really blew me away. I use cheap TL072 as suggested and it does not degrade the sound whatsoever. http://gainphile.blogspot.com/2007/1...gainclone.html __________________ http://gainphile.blogspot.com

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