A reduction of voltage gain by 30% amounts only to a 3dB reduction in gain. You would end up with a gain of around 65dB.
EAR 834P and gain
Hi,
I was wondering if I could adjust the gain in my EAR 834P phono pre-amp. It currently has something like 68db of gain in the Moving Coil setting. This is too high. If I replaced the 12AX7 tubes with 5751 tubes, I would reduce the gain by 30%, but that is too much.
Here is my question... Can I replace ONE of the 12AX7 tubes with a 5751 and, as a result, drop the overall gain down to about 61db? If so, which of the 3 tubes would I choose to replace? And is it wise to mix and match these tubes?
Thanks in advance!
Tom
I was wondering if I could adjust the gain in my EAR 834P phono pre-amp. It currently has something like 68db of gain in the Moving Coil setting. This is too high. If I replaced the 12AX7 tubes with 5751 tubes, I would reduce the gain by 30%, but that is too much.
Here is my question... Can I replace ONE of the 12AX7 tubes with a 5751 and, as a result, drop the overall gain down to about 61db? If so, which of the 3 tubes would I choose to replace? And is it wise to mix and match these tubes?
Thanks in advance!
Tom
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