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Old 27th September 2011, 11:06 PM   #1
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Default Bypassing a receiver's internal amp

Hi all,

First I have to say that I am a total newbie when it comes to hardware modifications, so past forums are of little help for me as I don't understand them . But I amwilling to learn

Therefore my question will be simple:

I own an old Kenwood KRF-V4550 5.1 receiver. Can I internally connect the two front channels coming from the dsp to the "rec out" RCA outs featured on the receiver?

This would turn the "rec out" connectors into a "pre-out" sending out the two decoded front channels to an external stereo amp (which it can't do at the moment, the "rec outs"--as there are several, one set of rca outs for each analog input-- do not output signals coming from the receiver's digital inputs). The remaining channels would still be amplified by the receiver.

Is there a simple tweak around it?

Thank you in advance for your help!
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Old 28th September 2011, 03:48 PM   #2
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In a two-channel amplifier, it would be simple. Not so simple for a 5.1 amplifier.
If you can identify the L and R front channel amplifiers, you may be able to pick up the audio at the input to those amplifiers.
You may be able to identify the L and R front channel amplifiers by tracing the front channel L and R speaker lines inside the amplifier.
Finding the input of the amplifiers is another matter. A partial schematic which shows the L and R front channel amplifiers would be helpful.
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Old 2nd October 2011, 10:41 AM   #3
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Hi all!

As they say, sometimes you go very far to find something, only to find out it was with you all along. No need to tweak or modify the receiver: I just found out the jack (headphone) out sends the decoded two front channels in analog....ahhhh the shame. Sorry guys!
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