Jumping channels

[lennon08]

OK, this may be lame but I need some help. I have a Kendrick Tweed head on the way and I have a question. I see all the threads on jumping channels on old Marshall and Tweeds, the question how do I do this and and what does it do when I do it?

I also have a Deluxe Reverb coming soon. This is going to be a good year!

[Steeltoe]

It's called jumpering, not jumping.
On my Hiwatt, which has 4 inputs, you plug into one,
and using a short cable, run that from the same
channel you are in, into one of the other channel's inputs. This allows you to blend the two channels together.

[CitizenCain]

After you try that, then you can try using a y-cord or A/B-Y box to go into both channels.

The fun never stops!

[tedzepplin]

Originally Posted by CitizenCain

After you try that, then you can try using a y-cord or A/B-Y box to go into both channels.

The fun never stops!

Will that make it sound different than jumpering the channels?

[III]

Originally Posted by tedzepplin

Will that make it sound different than jumpering the channels?

It definitely will if you run separate Overdrives etc outta the ABY. Fun.

EDIT - Oh... I've read other threads in the past that claim going "straight in" from a Y cable or ABY does sound different than the normal jump. Something about input impedance I think.

[soldano16]

Originally Posted by tedzepplin

Will that make it sound different than jumpering the channels?

Yes.

[mad dog]

It will also be different if you use a quality A/B/Y switcher to use both channels at the same time. You get it all that way. I jumper channels most of the time. What you're getting depends on the circuit, but usually means adding the impact of another pre-amp tube. The other thing you're doing is setting up blendable voicing. An example from the Clark Tyger: I always plugged single coils into the hotter (not padded) input of the Normal channel, and jumpered into the other channel. My Normal volume would get set on 9 or so, blend in Brite volume to taste, usually about 6. It adds volume, definitely changes the tone. Sort of like using a really good clean boost. With low wattage, old style amps, jumpering is IMO an essential technique for getting the most out of the amp.

[335guy]

I have a Marshall MK11 JMP 50 watt head with the four inputs, two for each "channel". Mine is the English EL-34 1986 bass version, which really is an asset for jumpering. Channel one is the normal channel and the one I plug into ( the higher gain input ) then I jumper from the channel one low gain to the channel two high gain. Pretty typical. However, both channels sound very different. Channel one is brighter with less bass. Nice and chimy if one wants that. Dial up the bass control to add bottom. It sounds good by itself. Channel two sounds great for jazz clean dark tone. But if you want to rock, blend the two together by varying the volumes of both channels PLUS the tone controls ( presence, bass, mid, treble ). With the PPIMV control, the amount of variety is pretty good. BTW, I am selling this as it's too much amp for me and I'm just sticking to small combos now. PM me for more info.

[zombiwoof]

Or run a pan pedal into both inputs and get any mix of the two channels on the fly!

Al

[zombiwoof]

Just don't try using both channels on that Deluxe Reverb or other Fender reverb amps, the channels on them are out of phase with each other.

Al