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Old 13th January 2004, 10:20 AM   #1
FM300 is offline FM300  Greece
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Join Date: Jan 2004
Location: Olive grove
Default Cambridge P50 funky tape loop.

Hi,

I have an old Cambridge Audio P50 amp that seems to have weird tape facilities. Here's the problem:
When using the tape monitor switch, I can only control the volume via a sensitivity pot in the back of the amplifier, and the balance does not work. Using the tape in the aux or radio inputs, everything is okay.

Is this normal? I cannot imagine that the tape function is designed this way?
OTOH, the sensitivity pot in the back has quite a large knob; something that looks designed for "easy" use?

Again, help/circuit diagram would help..

regards,

nicolas
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Old 17th February 2004, 03:41 PM   #2
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Join Date: Mar 2002
Location: Dublin, Ireland
Hi Nicolas,

I have one of these amps and I have some odd switching behavour. In the end I gave up on it and just connected everything through a switch box (the P50 didn't have enough inputs anyway).

I had it on the bench a while ago to replace some of the now very old and dried up caps and I couldn't figure out what was wrong. I just though my amp was knackered.

If you do get a cct diagram for it I'd love to get a copy.

Best of luck.
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Old 17th February 2004, 05:39 PM   #3
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
Default Re: Cambridge P50 funky tape loop.

Quote:
Originally posted by FM300
Hi,

I have an old Cambridge Audio P50 amp that seems to have weird tape facilities. Here's the problem:
When using the tape monitor switch, I can only control the volume via a sensitivity pot in the back of the amplifier, and the balance does not work. Using the tape in the aux or radio inputs, everything is okay.

Is this normal? I cannot imagine that the tape function is designed this way?
OTOH, the sensitivity pot in the back has quite a large knob; something that looks designed for "easy" use?

Again, help/circuit diagram would help..

regards,

nicolas
?????????

normally tape output level is fixed, and the volume,
tone and balance controls do not affect it.
This perfectly sensible design.
The only thing unusual is the variable output level.

sreten.
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