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Re: GOT MY MARSHALL BACK WITH E34LS installed
check it out at www.londonpower.com - this is the next big thing in amps in my opinion. By lowering the plate voltage (but keeping the bias current constant), you can actually reduce the volume of the amp in a way that's 100% transparent. This sounds much better than using an attenuator and doesn't harm the power tubes. In fact, because you're running them at a lower plate voltage, power tubes run with power scaling have the lifetime of a preamp tube!
One cool thing about the power scaling though is that the lower plate voltage of the power tubes means you have to reduce the output signal of the preamp to stop it distorting excessively (providing you just scale the power amp). However, this means that you can control exactly how much distortion is from the preamp and how much is from the power amp. This in practice enables you to make a high headroom power tube behave like a low headroom / gainy one, and vica versa. I can't wait to get it installed, should be awesome.
Here's an installation review of the power scaling kit:
but I'm getting the newer released PS-Box which has all that electronics inside a box that can be mounted in the headbox; that means you only have to run 3 or 4 wires inside the amp.
Originally posted by OlinMusic
One cool thing about the power scaling though is that the lower plate voltage of the power tubes means you have to reduce the output signal of the preamp to stop it distorting excessively (providing you just scale the power amp). However, this means that you can control exactly how much distortion is from the preamp and how much is from the power amp. This in practice enables you to make a high headroom power tube behave like a low headroom / gainy one, and vica versa. I can't wait to get it installed, should be awesome.
Here's an installation review of the power scaling kit:
but I'm getting the newer released PS-Box which has all that electronics inside a box that can be mounted in the headbox; that means you only have to run 3 or 4 wires inside the amp.
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