Need Cambridge P35 Integrated Schematic

Andy_A · 26th September 2007, 08:28 PM

I have an older Cambridge P35 Integrated which sounds great but has a strange problem: the right channel has less bass. I contacted Cambridge, but they have no info/schematic on this model as it is from around the early 90's. If anyone has the schematic or knows where I may find it, please let me know! Thanks

Roar Malmin · 26th September 2007, 08:51 PM

Hi Andy A
Your problem is likely to be the capacitor in the feedback network losing its capacitance. Locate the capacitor in the feedback resistor that goes from the base on the transistor in the input long tail pair and to ground. It is likely to be of a value from 22u to 100uf.

Roar

gni · 26th September 2007, 11:10 PM

Pictures. . . .they might help. . . . overview and specific area of concern.

Andy_A · 27th September 2007, 01:44 AM

wow, thanks for the help everyone. I wish I had some pictures to post, but the unit is with my friend who is a skilled technician. Next time I am there I will take some pictures of the front and back and insides of the unit and post them here. I will also relate the information to him regarding the likely problem with the P35. Thanks again, and if anyone has a schematic or knows where we can find one, please let me know.

26th September 2007, 08:28 PM	#1
Andy_A diyAudio Member Join Date: Apr 2005 Location: morph	Need Cambridge P35 Integrated Schematic I have an older Cambridge P35 Integrated which sounds great but has a strange problem: the right channel has less bass. I contacted Cambridge, but they have no info/schematic on this model as it is from around the early 90's. If anyone has the schematic or knows where I may find it, please let me know! Thanks

26th September 2007, 08:51 PM	#2
Roar Malmin diyAudio Member Join Date: Jul 2006	P35 Hi Andy A Your problem is likely to be the capacitor in the feedback network losing its capacitance. Locate the capacitor in the feedback resistor that goes from the base on the transistor in the input long tail pair and to ground. It is likely to be of a value from 22u to 100uf. Roar

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26th September 2007, 11:10 PM	#3
gni diyAudio Member Join Date: Sep 2006	Pictures. . . .they might help. . . . overview and specific area of concern.

27th September 2007, 01:44 AM	#4
Andy_A diyAudio Member Join Date: Apr 2005 Location: morph	wow, thanks for the help everyone. I wish I had some pictures to post, but the unit is with my friend who is a skilled technician. Next time I am there I will take some pictures of the front and back and insides of the unit and post them here. I will also relate the information to him regarding the likely problem with the P35. Thanks again, and if anyone has a schematic or knows where we can find one, please let me know.

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