traderyoda wrote: > I have a SB Classic hooked to a Klipsch Promedia 2.1 setup. This has > provided good quality sound for a long time but the amp in the subwoofer > burned up. This is typical failure mode for the Promedia system. Rather > that replace/repair the Klipsch amp I thought to replace it with a Lepai > LP210PA 2x30W + 60W 2.1 plate amp. > > To power the Lepai I used a 20vdc HP laptop charger which should provide > plenty of power. I converted the charger (3 wire cord) to a dc power > supply (2 wire cord). The power plug on the charger has red (+), black > (-), and blue (sense) the blue wire is meant to send the laptops > battery state back to the charger. I isolated the blue wire and just > connected the remain + and wires to a new power plug that fits the > Lepai. > > The switchover to the Lepai was quick and easy. When I turned it on the > sound quality was excellent but with very little volume. The SB is set > to 100% output. > > Im confused because this Lepai conversion has been done by others and > it should have plenty of juice to produce more volume than this. Not > sure though if others were feeding a signal from a SB Classic. > > Is there any way to up the gain on the SB? > > I do have a spare Sony receiver I could try and a DC power supply to see > my 20vdc hacked power brick is just not delivering enough power. > Thoughts?Try using another source to feed the amplifier to rule that out.
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