"Tom" wrote in message
...
I have a Rogers Cadet III amplifier and have recently got hold of a
Thorens TD 160 turntable that I would like to try with it. The Cadet
only has a pick up adapter for a ceramic cartridge, I want to try and
modify it for use with a magnetic cartridge.

I have a copy of the circuit diagram for the control unit but it doesn't
include the pick up adapters.

I've taken a picture of the adapter in the hope someone might be able to
advise how to alter it for a magnetic cartridge, and uploaded the
control unit diagram + description of the magnetic cartridge adapter
from the manual:

http://www.apax63.dsl.pipex.com/puadaptor.jpg

http://www.apax63.dsl.pipex.com/ControlUnitCircuit.jpg

http://www.apax63.dsl.pipex.com/page2.jpg

I notice the magnetic adapter is supposed to be RIAA, I'm not sure how
important that is, or what additional circuitry it would require.

Thanks for any help
Tom

--

apax63 'at' dsl 'dot' pipex 'dot' com

I'v tried to find a circuit diagram of the RIAA adaptor, but no luck. If
no-one else has one, you could buy an external RIAA pre-amp (The QED DS1 is
around £35, ) which should feed the Flat Ceramic input OK. Ideally, you may
need 10dB attenuation on the RIAA pre-amp output. The DS1 provides 175mV out
from a nominal 5mV in, so should drive the Rogers 65mV input reasonably OK.

S.