Marshall Jubilee Switching

[corpse]

I was using a regular aftermarket A/B to channel switch on my 2554 Silver Jube but my amp guy said that was not the way to go- and I should get a Marshall switch.
I have never seen such an animal- can someone point me in the right direction.

 

[bluesky636]

There are plenty of well made a/b or a/b/y switches out there. I don't know what difference a "Marshall" switch, if there is such a thing, would make.

 

[PaulD]

The channel foot-switch is nothing more than an on/off switch that switches a relay inside the amp to switch channels. If the one you are using works reliably it is absolutely fine and there is nothing to be gained from buying a Marshall branded switch.

It's not technically an A/B switch btw, an A/B switch is something that you would plug your guitar into to switch between 2 different amps or two different inputs on the same amp. The 2554 has a single input and an on/off foot-switch that plugs into the back of the amp.

 

[bluesky636]

If the 2554 has only a single input, how on earth would you even use an A/B switch to change channels?

 

[PaulD]

If the 2554 has only a single input, how on earth would you even use an A/B switch to change channels?

I'm fairly sure the OP means he is using a generic foot-switch plugged into the foot-switch jack on the back of the amp, not an A/B switch. As you say an A/B switch would be of no use here

 

[bluesky636]

I'm fairly sure the OP means he is using a generic foot-switch plugged into the foot-switch jack on the back of the amp, not an A/B switch. As you say an A/B switch would be of no use here

Well, corpse said he was using a "regular aftermarket A/B". I would think he would know the correct terminology.

 

[PaulD]

Details of the Silver Jubilee 2554 amp are here https://www.drtube.com/marshall-silver-jubilee/

It's a single input amp with a 2 pole jack socket on the back panel to connect a foot-switch to change channels (channels can also be switched via the push/pull switch on the master volume). There is no way to use an A/B switch with this amp.

 

[J.D.]

You can use any generic footswitch on the Jubilee to switch channels. No need to be Marshall brand, just the correct switch type and decent components.

 

[bluesky636]

Details of the Silver Jubilee 2554 amp are here https://www.drtube.com/marshall-silver-jubilee/

It's a single input amp with a 2 pole jack socket on the back panel to connect a foot-switch to change channels (channels can also be switched via the push/pull switch on the master volume). There is no way to use an A/B switch with this amp.

Then I have no idea what corpse is using to switch channels.

 

[PaulD]

Then I have no idea what corpse is using to switch channels.

A foot-switch plugged into the jack socket on the amplifier I imagine

 

[bluesky636]

A foot-switch plugged into the jack socket on the amplifier I imagine

That type of switch is usually a shorting switch to energize a relay is it not? I don't think a standard A/B switch as referenced would meet that requirement though I could be wrong.

 

[PaulD]

That type of switch is usually a shorting switch to energize a relay is it not? I don't think a standard A/B switch as referenced would meet that requirement though I could be wrong.

Which is exactly what I said in post #3 if you read it!

 

[bluesky636]

Which is exactly what I said in post #3 if you read it!

No need to get nasty. I don't really care anymore.

 

[corpse]

So what I was using worked- if it worked it’s not damaging the circuit?

 

[PaulD]

So what I was using worked- if it worked it’s not damaging the circuit?

No, there is no way it can damage the circuit, the footswitch is a simple passive on/off switch that switches a relay inside the amp to change channels. It's quite clear from the schematic on the page I linked to earlier how it works so I'm not quite sure why your amp guy would suggest it would be a problem (unless perhaps he was trying to sell you a Marshall branded footswitch!).

If the one you have does the job it is fine

 

[corpse]

Thanks Paul.
I can barely reach the vol knob on the guitar when playing. The tone knob- kinda.
The amp- nah.