Stereo Cart to Mono Pre Amp

vasu · 24th March 2007, 05:12 PM

My project: MC preamp only one channel (mono) , Moving Coil Input Transformer, tube preamp and passive riaa.
My cartridge is Audio-Technica AT-09 stereo MC. Phono cables together or what? Input impedance should be 1/2 ?

AndrewT · 3rd April 2007, 11:11 AM

Hi,
I would try paralleling the cartridge pins and then feeding into half to full impedance value.

You may find that the impedance needs altering from the recommended anyway.

EC8010 · 3rd April 2007, 11:58 AM

I paralleled the cartridge outputs and used 24k for my mono record player. It seems fine.

24th March 2007, 05:12 PM	#1
vasu diyAudio Member Join Date: Feb 2006 Location: Tampere	Stereo Cart to Mono Pre Amp My project: MC preamp only one channel (mono) , Moving Coil Input Transformer, tube preamp and passive riaa. My cartridge is Audio-Technica AT-09 stereo MC. Phono cables together or what? Input impedance should be 1/2 ?

3rd April 2007, 11:58 AM	#3
EC8010 diyAudio Moderator Emeritus Join Date: Jan 2003 Location: Near London. UK	I paralleled the cartridge outputs and used 24k for my mono record player. It seems fine. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

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3rd April 2007, 11:11 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, I would try paralleling the cartridge pins and then feeding into half to full impedance value. You may find that the impedance needs altering from the recommended anyway.