| coffin |
Pearl phono stage seems to be the excellent RIAA stage.
But if we get rid of the coupling Cap between 1st and 2nd stage??
Is anybody know how to do it or suggestions?
Thanks
Coffin
:confused: |
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| coffin |
Hi
I don't think I can keep the gain of second stage unchanged.:scratch:
So I give up.........:bawling:
Unless somebody hace a better idea:hypno2: |
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| GRollins |
If you eliminate C11 and C12, you'll skew the RIAA EQ. Setting that aside, you could offset Q6 above ground by the 15V volts or so that it would take to put it at the same potential as the collector of Q5. The best way to do it would be a separate power supply, lifting 'ground' and the rail both. There's a DC blocking cap at the output, so DC offset at the signal output wouldn't be a problem.
Grey |
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| coffin |
| quote: | Originally posted by GRollins
If you eliminate C11 and C12, you'll skew the RIAA EQ. Setting that aside, you could offset Q6 above ground by the 15V volts or so that it would take to put it at the same potential as the collector of Q5. The best way to do it would be a separate power supply, lifting 'ground' and the rail both. There's a DC blocking cap at the output, so DC offset at the signal output wouldn't be a problem.
Grey |
Yes I can recalculate RIAA.
Floating is the only way......
THANX:D :D :D |
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