guitar amp question

nhuwar · 10th February 2009, 04:59 PM

Hi all,

I'm putting together a little el84 push pull guitar amp and had a question. If I use a 7600 z primary output transformer will it cause me any trouble?

I know the normal load for a pp pair of el84's in 8 k. Will 400 ohms really cause that much of a difference in a guitar amp?

Thanks,

Nick

tubelab.com · 10th February 2009, 05:07 PM

Quote:

Will 400 ohms really cause that much of a difference in a guitar amp?

I doubt that you would notice it in ANY amp. Most speakers vary over at least a 2:1 range across the audio band.

One of my favorite tricks in my guitar amps is th use one of those multi tapped Hammond "universal" OPT's and route every tap to a switch. Each tap changes the load by a factor of two, and even that doesn't change the sound much unless the amp is cranked into clipping.

nhuwar · 10th February 2009, 05:28 PM

Cool thanks, It's what I though but wanted to ask the experts first LOL

Nick

10th February 2009, 04:59 PM	#1
nhuwar diyAudio Member Join Date: Jan 2007 Location: Tomball Texas	guitar amp question Hi all, I'm putting together a little el84 push pull guitar amp and had a question. If I use a 7600 z primary output transformer will it cause me any trouble? I know the normal load for a pp pair of el84's in 8 k. Will 400 ohms really cause that much of a difference in a guitar amp? Thanks, Nick

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10th February 2009, 05:28 PM	#3
nhuwar diyAudio Member Join Date: Jan 2007 Location: Tomball Texas	Cool thanks, It's what I though but wanted to ask the experts first LOL Nick

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