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Old 27th September 2003, 02:35 PM   #1
sounder is offline sounder  Canada
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Default Addind a pre out to receiver?

Hi,

I'm trying to feed my AV component through my Yamaha AV amp into a Gainclone. I would also like to use the tuner. My cd feeds directly into my GC which has a source switch. There is no pre-out on the Yamaha, only a CDR out(sim to tape?) The problem is it doesn't go through the volume control so I have to adjust volume on the Gainclone manually. Is there a way to add a pre out and esentially use the receiver as a preamp, and if so where in the circuit (theoretically) would I tie in. I'm thinking just after the volume knob. Also, will I run into impedence problems etc. Has anyone done this before?

Any and all input welcome.

David
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Old 27th September 2003, 02:42 PM   #2
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David you can buffer your speaker outputs to feed the gainclone or you could use your headphone jack
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Old 27th September 2003, 03:41 PM   #3
joensd is offline joensd  Germany
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Another thread ?
Can I change receiver output to preamp?
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Old 27th September 2003, 06:06 PM   #4
sounder is offline sounder  Canada
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Quote:
Originally posted by JOE DIRT®
David you can buffer your speaker outputs to feed the gainclone or you could use your headphone jack

Great idea Dirt, the headphone jack didn't occur to me

No major surgery after all.
David
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Old 27th September 2003, 06:43 PM   #5
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I kinda figured you did not want to mod the receiver....so thats your best way....either option works well and if you want to get fancy just add rca jacks on the back wired up to what you want inside
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Old 28th September 2003, 04:07 AM   #6
djk is offline djk
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The headphone jack on most receivers is just a 330 ohm resistor off the main power amp. It is intended to drive low impedance headphones.

Without a low impedance load, no attenuation will occur.

Terminate the headphone jack with 33 ohms and you should be fine.

The temination resistors could be built in to the cable plug, or in the CG chassis.
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Old 28th September 2003, 04:46 AM   #7
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You mean GC chassis right...and yeah...the 33 ohm thingy MUST be there...or at high volumes...on the recieber...the sound will distort badly...
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Old 28th September 2003, 05:36 AM   #8
sounder is offline sounder  Canada
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Quote:
Originally posted by djk
The headphone jack on most receivers is just a 330 ohm resistor off the main power amp. It is intended to drive low impedance headphones.

Without a low impedance load, no attenuation will occur.

Terminate the headphone jack with 33 ohms and you should be fine.

The temination resistors could be built in to the cable plug, or in the CG chassis.

Thanks all simpler than I thought Iwas going to be.
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Old 28th September 2003, 06:38 AM   #9
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What did you think it was gonna be?? hehe...couldn't waste a change to joke here...when you have finished...tell us what it sounds like ok?
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