thomas
Who needs headphones when there's the JVC MX-GT80?
- Joined
- Jun 22, 2001
- Posts
- 742
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Hi, i'm currently working on an active bass boost circuit, and have a few questions...
I know (or used to know) the basic formulas for finding the componant values, just take the normal opamp gain eqn, and use impedence instead of resistance, sub in gain, solve for capacitance, right? its been a while since i read up on this stuff, and can't find any online resources...
my question is, what is the conversion factor between the dB scale, and voltage? I know dB is logarithmic, but if you want somthing like +10dB at a particular frequency, what gain would you need at that freq?
second of all, is a simple first order HP filter be adequte for bass boost, or will the very low frequencies (<20hz) be boosted by too much?
thanks...
I know (or used to know) the basic formulas for finding the componant values, just take the normal opamp gain eqn, and use impedence instead of resistance, sub in gain, solve for capacitance, right? its been a while since i read up on this stuff, and can't find any online resources...
my question is, what is the conversion factor between the dB scale, and voltage? I know dB is logarithmic, but if you want somthing like +10dB at a particular frequency, what gain would you need at that freq?
second of all, is a simple first order HP filter be adequte for bass boost, or will the very low frequencies (<20hz) be boosted by too much?
thanks...