Here is my scheme...

StalfoS · 11th December 2006, 12:59 AM

Last year I build a lm3875 chip amp. It turn out excellent and I love it.

The only thing is that now I want to make more amps.

I am thinking of getting a lm4780 kit from audiosector, and making a 4-channel amplifier to compliment my current amp. I can use the 4 new + 2 old channels to make a 5.1 setup.

Here's my question: If I am only feeding the sub the signal from the sub channel do I still need a crossover? No, right?

Are there any other considerations I should take into account??

jaudio · 11th December 2006, 01:45 AM

Quote:

Originally posted by StalfoS
Here's my question: If I am only feeding the sub the signal from the sub channel do I still need a crossover? No, right?

right. No crossover

Quote:

Originally posted by StalfoS

Are there any other considerations I should take into account??

I can think of none

seventynine · 15th December 2006, 09:09 AM

i assume you will need to match the power for the 5 monitor speakers and have a bit more power for the sub.

11th December 2006, 12:59 AM	#1
StalfoS diyAudio Member Join Date: Jan 2005 Location: Vancouver, British Columbia	Here is my scheme... Last year I build a lm3875 chip amp. It turn out excellent and I love it. The only thing is that now I want to make more amps. I am thinking of getting a lm4780 kit from audiosector, and making a 4-channel amplifier to compliment my current amp. I can use the 4 new + 2 old channels to make a 5.1 setup. Here's my question: If I am only feeding the sub the signal from the sub channel do I still need a crossover? No, right? Are there any other considerations I should take into account??

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15th December 2006, 09:09 AM	#3
seventynine diyAudio Member Join Date: Jun 2006	i assume you will need to match the power for the 5 monitor speakers and have a bit more power for the sub.

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