channel blending

oso

Hi folks and Martin!
I'm in the process of buying a M15Mk1 as soon as moneybooking get the money from my bank. I will get back to you with an order Martin:-)

I have a question/suggestion though!

Is it possible/ have anyone tried, to put a blender potentiometer(balance type) instead of the ch1/2 switch to be able to mix ch1 and 2 in any desired level? This would makeit possible to get a greater variations of sounds since the sound charactheristics on the two channel are quite different.

Stay safe and rock on!
Tomas Olsson

d3t0nat0r

Re:channel blending

Intresting idea!!!

d95err

Re: channel blending

I've just ordered an M15Mk1 kit (I'll be making the money transfer tomorrow...).

I have lots of ideas on simple channel blending and switching. NOTE: Only *ideas*. I haven't tried any of them, and I'm a newbie to tube electronics.

Marshall often used two 470k resistors to mix the two channels. I suppose this could work on the M15Mk1 too. You would adjust the blend with the volume (Clean) and master (Crunch) knobs.

Another approach would be to remove the Crunch master and replace the channel switch with a 1M pot that blends between the channels.

For channel switching I'm considering simply having one input jack per channel. Then I can use an A/B switch on my pedal board to switch channels. Or, why not use two jacks per channel, allowing you to "jumper" the channels like on the JTM45.

With switching jacks, you could probably figure out a way to make the input connect to both channels if only one cable is plugged in and go to separate channels if both inputs are used.

Lots of ideas, I can't wait! I'd love to hear some comments of this from more experienced amp builders.

MAD

Re: channel blending

I think using a stereo 1M log pot wired as a balance pot would work fine. The volume of the first channel is in betweeen the two stages, so it could be useful to add a balance pot and replace the master volume of the second channel with it.
Regards, Martin

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