Connecting Two Stereo Amps together

DPK · 14th July 2005, 11:14 AM

Hi

How two stereo amps. (100rms/channel and 50 rms/channel of different brand) can be connected together to increase overall power.

Regards
DPK

Wynand · 14th July 2005, 11:22 AM

Personally I wouldn't put two amps in series with each other.

You can only go as loud as the voltage rails of each amp, and even if your amps survive it, you'll be amplifing the distortion/noise from the first amplifier with the second one.

Unless someone else knows more, I don't think you'll gain anything, just noise.

JustinAtGT · 14th July 2005, 11:41 AM

In order to connect the amplifiers together, you could always use a bridge type configuration. The easiest way I believe is to build yourself two inverters and apply them to the inputs of both channels of one of your amplifiers, then you could bridge the configuration channel to channel.

However, when you really start to think about it...what can you really do with 150 watts that you can't do with 100? What is your application and/or need for a larger amplifier? Perhaps it isn't even necessary?

--justin

macboy · 14th July 2005, 12:55 PM

The difference between 150 W and 100 W is only 1.7 dB, which is only a marginally noticable difference. In any case, you cannot connect two different amps together in any way to get a single higher power output.

HDTVman · 14th July 2005, 01:11 PM

The only way to use 2 dissimilar amps on the same channel is in a biamp setup. Generally the lower powered one for the high frequencys and the higher power one for the low frequencys. This requires a crossover before the amps (this would be an active, low level crossover) and the speaker drivers are connected directly to each amp.

DonoMan · 14th July 2005, 01:42 PM

HDTVman is "probably" right. You CAN put them in series, but only if they can take the increased current, which is unlikely unless you're using like a 16-ohm load. So biamping is your best bet. Or, of course, build a bigger amp

14th July 2005, 11:14 AM	#1
DPK diyAudio Member Join Date: Feb 2005 Location: Delhi	Connecting Two Stereo Amps together Hi How two stereo amps. (100rms/channel and 50 rms/channel of different brand) can be connected together to increase overall power. Regards DPK

14th July 2005, 11:41 AM	#3
JustinAtGT diyAudio Member Join Date: Mar 2004 Location: Atlanta, GA	In order to connect the amplifiers together, you could always use a bridge type configuration. The easiest way I believe is to build yourself two inverters and apply them to the inputs of both channels of one of your amplifiers, then you could bridge the configuration channel to channel. However, when you really start to think about it...what can you really do with 150 watts that you can't do with 100? What is your application and/or need for a larger amplifier? Perhaps it isn't even necessary? --justin __________________ >>>>Justin

14th July 2005, 01:11 PM	#5
HDTVman diyAudio Member Join Date: Aug 2001 Location: Chicago area	The only way to use 2 dissimilar amps on the same channel is in a biamp setup. Generally the lower powered one for the high frequencys and the higher power one for the low frequencys. This requires a crossover before the amps (this would be an active, low level crossover) and the speaker drivers are connected directly to each amp. __________________ What ever makes the tunes flow

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14th July 2005, 11:22 AM	#2
Wynand diyAudio Member Join Date: Mar 2005 Location: Cape Town	Personally I wouldn't put two amps in series with each other. You can only go as loud as the voltage rails of each amp, and even if your amps survive it, you'll be amplifing the distortion/noise from the first amplifier with the second one. Unless someone else knows more, I don't think you'll gain anything, just noise.

14th July 2005, 12:55 PM	#4
macboy diyAudio Member Join Date: Oct 2003 Location: Ottawa, Canada	The difference between 150 W and 100 W is only 1.7 dB, which is only a marginally noticable difference. In any case, you cannot connect two different amps together in any way to get a single higher power output.

14th July 2005, 01:42 PM	#6
DonoMan diyAudio Member Join Date: Feb 2005 Location: Massachusetts	HDTVman is "probably" right. You CAN put them in series, but only if they can take the increased current, which is unlikely unless you're using like a 16-ohm load. So biamping is your best bet. Or, of course, build a bigger amp

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