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How to kill 35V of DC?

jhoyt

jhoyt

Incomprehensible space llama
I'm trying to optimize my Nikko FAM-800 tuner. I noticed that it has 3.3uF caps coupling the opamp output to the jacks. Here's the nuts-n-bolts: the output opamp (Toshiba TA7129P) is on a 35VDC rail, and it seems to pass all of it through to the output. The coupling cap does a good job blocking it, only passing a couple mV.

What's a better way that I can kill off all that DC voltage at output, without killing the bass response?
 
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jhoyt said:
I'm trying to optimize my Nikko FAM-800 tuner. I noticed that it has 3.3uF caps coupling the opamp output to the jacks. Here's the nuts-n-bolts: the output opamp (Toshiba TA7129P) is on a 35VDC rail, and it seems to pass all of it through to the output. The coupling cap does a good job blocking it, only passing a couple mV.

What's a better way that I can kill off all that DC voltage at output, without killing the bass response?
Click to expand...

Changing the coupling caps uf value. Originals may be out of spec.
 
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