I bought a used phono preamp Thorens MM008 like this
Thorens MM008 phono preamplifier - maPlatine.com
Unfortunately the jacks with the appropriate resistive loads (10, 100 and 1 Kohms) for adjusting the MC input are missing.
https://www.maplatine.com/en/4687-thickbox_default/thorens-mm008-phono-preamplifier.jpg
Does someone know what is exactly inside these jacks? Only resistors 10, 100 and 1 Kohms? Or is there more or anything else inside?
I want to make these by myself.
Please let me know. Thanks.
Thorens MM008 phono preamplifier - maPlatine.com
Unfortunately the jacks with the appropriate resistive loads (10, 100 and 1 Kohms) for adjusting the MC input are missing.
https://www.maplatine.com/en/4687-thickbox_default/thorens-mm008-phono-preamplifier.jpg
Does someone know what is exactly inside these jacks? Only resistors 10, 100 and 1 Kohms? Or is there more or anything else inside?
I want to make these by myself.
Please let me know. Thanks.
As you've surmised there are only the referenced resistors inside the adapters. If your MC cartridge has a different preferred value you can make them up to any value, just make sure to use low noise resistors.
Thanks.
I'll take a pair of nice cinch plugs and solder just a low noise resistor with appropiate value. May be a shielding should be considered.
I have a cartridge from Empire Scientific Switzerland MC-1000 van den Hul. Manufactured 1986. It still has the genuine needle.
Here http://www.revoxsammler.ch/Testberichte%20Plattenspieler/Plattenspieler%20Empire-Revox.pdf it has been tested/measured on a load 400 pF and 0,1kOhms (100ohms).
I'll take a pair of nice cinch plugs and solder just a low noise resistor with appropiate value. May be a shielding should be considered.
I have a cartridge from Empire Scientific Switzerland MC-1000 van den Hul. Manufactured 1986. It still has the genuine needle.
Here http://www.revoxsammler.ch/Testberichte%20Plattenspieler/Plattenspieler%20Empire-Revox.pdf it has been tested/measured on a load 400 pF and 0,1kOhms (100ohms).