fewtch
Headphoneus Supremus
- Joined
- Jul 23, 2003
- Posts
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- 37
Quote:
Eh... buying yet another Plainview 9v (at $12 + shipping) simply to get ~3 hours of use before having to charge all three batteries (at ~2 hrs apiece) still isn't worth it. I think it's likely gonna be the Elpac WM080 for this amp, no need to go hardcore on stuff like this...
| Originally posted by tangent I recall measuring this amp at about 50mA draw. I also recall that the op-amps they use aren't exactly low-voltage types. What may be happening is that you're running out of voltage swing, not that the batteries are dead. Measure the voltage across the terminals when the amp starts clipping. If the voltage is still well above 6-7V per battery, you just need to add a bit of voltage to make this circuit happy. I don't recall if the circuitry inside can tolerate more than 24V. If it could, 3x9V would solve your problem. Beyond that, you're looking at things like the PPA battery board, which starts getting expensive and complicated. |
Eh... buying yet another Plainview 9v (at $12 + shipping) simply to get ~3 hours of use before having to charge all three batteries (at ~2 hrs apiece) still isn't worth it. I think it's likely gonna be the Elpac WM080 for this amp, no need to go hardcore on stuff like this...
