| voxac30 |
I rebuild my 23years old MM 100b bass amp -hybrid preamp
ic and poweramp tubes (6l6GC ) . I would like to know
to replace ic TL072 with another ic with less noise and more
dynamic for better sound . Thanks for help !:confused: |
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| Chucko |
| The TI OPA2134 is a good choice. But it takes more than twice the current of the TL072, so be sure the power supply is up to it. |
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| Nigel Goodwin |
| The TL072 is a great opamp, I wouldn't have thought replacing it will make any difference whatsoever? - it's probably already by far the highest quality part of your amplifier. |
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| Brett |
| quote: | Originally posted by Nigel Goodwin
The TL072 is a great opamp |
I could not agree less. |
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| tINY |
The TL072 is fine for bass amps. Lowering the noise is a little harder than just replacing an op-amp.
But, if you think it will help, you could try an AD823. Make sure the supply is adequate (as it draws more quiesent current) and be prepared to alter the feedback a bit as it has almost 2x the slew rate as the 072.
-tINY
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