Jumpering channels.....

[zhivago]

....anyone doing this with their amps?

I cannot wait to try it out with the Tremolux......I'm so curious as to what it sounds like...

are the claims of more gain, and also more eq options, by mixing the controls of both channels true?

[Jay]

This works as long as the channels aren't out of phase from one another.  For example, my AC30 style head cannot be jumpered.  The two channels sort of cancel each other out.  On amps it does work on, it'll mainly give you a lot more gain so if you're looking for in amp distortion it's pretty sweet.  I get a lot of squealing though when I really jack both channels on my marshall-esque amps.

[zhivago]

fantastic! the Tremolux is jump-able...so I should be having fun with it soon!

god...I haven't had a working amp since January....I am so excited the Tremolux will be up and running in a few weeks!!!

[mezcalhead]

I thought most blackface Fenders had out-of-phase channels?

I keep meaning to try to jumper mine anyway (and the brownface TLux) but for some reason it never seems to occur to me while I'm actually playing, only when I'm at work or something.

[zhivago]

the Tremolux can definetely be jumpered from what I've heard...

the early bassmans are also jumperable (I invented a new word!!??)

something about the usualy bass man amps I read that has the channels out of phase....

[sookwinder]

some of the best sound occur when i jumper the channels on  my bassman

[zhivago]

can't wait to have a go!!!

[mynameisjonas]

i used to do it all the time when i had my '65 bassman. i don´t recall if i could get more gain out of it, but it definitely gave me more EQ options.

[zhivago]

I will soon find out...

the cab should be delivered soon...then I need to pick up the speakers from my friend...and get the cable for them.


oh yeah, I need a stepdown transformer too

[Superfuzz]

i used to do it all the time when i had my '65 bassman. i don´t recall if i could get more gain out of it, but it definitely gave me more EQ options.

Your was the BF version , at least SF, or ,instead, it was the classical tweed bassman?
I'm interested to build a BF Bassman, if it's possible to jumper the guitar channel with the Bass channel it would be cool...

[gogothegogo]

hi

I used to jumper my silverface bassman 100 head (bass and normal channels)

it's true it gives you more gain as you are using two preamps together.
I finally stopped using this because sound becomes too punchy for me (before that I never knew there can be too punchy sound ) and with all the treble naturally coming from my guitar my ears were asking me to unplug the bass channel

so if you have guitar with pronounced treble, or you have guitar with relatively high output, or you want mellower sound jumping channels is not for you.

but one of best things about it is volume boost which is great if you have silverface bassman



btw.
I believe that modifications for amps with out of phase channels is not too hard.

[mezcalhead]

i used to do it all the time when i had my '65 bassman. i don´t recall if i could get more gain out of it, but it definitely gave me more EQ options.

Your was the BF version , at least SF, or ,instead, it was the classical tweed bassman?

Bassmans were all blackface in '65 as far as I know.

[mynameisjonas]

yeah it was BF

[Superfuzz]

yeah it was BF

Do you note that punchy sound as said by "gogothegogo"?

[pullover]

What happens when you jumper an amp that is out of phase?