I have a 70's P/J with EMGs. It has a 9 volt in it but supposedly can handle 18 or 24VDC. I am considering adding a 2nd battery. That said, Anyone know if a Jaguar bass can handle more than the 9 volts it was designed for? The treble pot really doesn't seem to add a helluva lot to the sound - perhaps 18VDC would add some headroom to the sound.
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18 volts JAG - possible???
- Thread starter tapewound ted
- Start date
bongomania
Commercial User
"Headroom" just means less distortion when you slap/pop or otherwise run a hot signal through the preamp. Increasing voltage will not make the treble pot behave or sound any differently than it does now.
I suppose the circuit has been layed out in such a way that the actual pre-amp always gets the same voltage through a voltage regulator. If so, applying higher voltages would mean more power through the drain, 
and no improvement of headroom whatsoever. As the amplitude of the output voltage of the bass is less than one Volt, there is no need for higher supply voltages at all. 
and no improvement of headroom whatsoever. As the amplitude of the output voltage of the bass is less than one Volt, there is no need for higher supply voltages at all. 
I suppose the circuit has been layed out in such a way that the actual pre-amp always gets the same voltage through a voltage regulator. If so, applying higher voltages would mean more power through the drain,
Unlikely they would use a voltage regulator on a battery-only circuit. Adds uneccessary cost. You would need to find out what IC is used as the preamp and just look up it's data sheet.
Well, if they don't use one, which also saves battery power, there should still be no need for the extra voltage, as the voltage swing is too low for that. These IC's might have a spec of + and - 15 V, but the required headroom is a function of the input signal, the amplification and the impedance.
- Feb 16, 2008
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it's a transistor based preamp so there is no IC in the circuit. IMO, running it at 18V would give no benefit and probably cook it.
Thanks. Using half rounds and not slapping. The question was mostly to address the the treble gain. Perhaps the treble section's components can be swapped to a more mid-range response.
