We need a device to run two heads into one cab

B

Bxlxaxkxe

Amp ho
Wish this existed without the need for a stereo cabinet. Kind of surprised it hasn’t been done yet unless it has and I’m not aware of it? To be clear, I’m talking about running them simultaneously and blending.

In theory, I can think of some ways to do this with load boxes and mixers, but an all in one device would be sick
 
ieoa0h5of0hexwx8vvyz.jpg
 
Bxlxaxkxe said:
Fair point. But still - surprised an all in one device for real amps hasn’t been created
Click to expand...
It's called a studio. 🤣🤣🤣

I kid, and also understand what you are looking for. If there is something, I am sure Tim Pierce, or Pete Thorn have done a vid on it.

It would be kind of a faff to implement safely, and be able to do the blend correctly.

A line mixer, load boxes, and power amp all in one, for multiple amps of varying wattage and output impedance....sounds like a losing endeavor. Cost wise. 🤷🏻‍♂️
 
simonfrewler said:
It's called a studio. 🤣🤣🤣

I kid, and also understand what you are looking for. If there is something, I am sure Tim Pierce, or Pete Thorn have done a vid on it.

It would be kind of a faff to implement safely, and be able to do the blend correctly.

A line mixer, load boxes, and power amp all in one, for multiple amps of varying wattage and output impedance....sounds like a losing endeavor. Cost wise. 🤷🏻‍♂️
Click to expand...
You know who would be able to pull it off? Steve Fryette
 
Bxlxaxkxe said:
You know who would be able to pull it off? Steve Fryette
Click to expand...
I'm sure. But it would weigh as much a Bull. 🤣
And cost so much. For the slimmest of margin, if more than 100 people purchased one.

It would be neat, just doesn't seem like good business. Maybe you can find a local to you electrical engineer, and build a custom one off.

This is the route I would take.
 
Bxlxaxkxe said:
You know who would be able to pull it off? Steve Fryette
Click to expand...

literally the first person that came to mind....but then i can also hear his voice in my head saying some variation of "whats the market for that?" and "then people would say, i want this, i want that"

his usual go to lines in his videos lol
 
I’ve wished for the same thing, but due to stuff like load impedances tube amps want to see, I doubt it’s possible at a conceptual level.

The most realistic solution you’re gonna find is putting each head on its own reactive load, then using a small mixer to blend them into a single extra poweramp.

It’s probably best to just use a buffer pedal to split your guitar into two signals and run that into two separate amp->cab rigs.
 
Yeah it can be done. No different than running two OTs in parallel in the big boy power amps.

You’d run into phasing issues if the two amps have a different number of gain stages, so you’d have to design some phase compensation circuit to get things to work together and not be canceling each other out by 180 degrees.

It would be heavy, it would be big, but it is definitely possible.

Edit: I should add that it would need to be big and heavy to handle the high current low voltage output of two amps at the same time. That power has to go into a load for each amp independently. You’d need a lot of big iron to transfer and mix that high current into the high current of another transformer, combine them both in phase, and then output the sum of the signals in phase to cabinets. I’d probably want to design some global feedback control at this point to provide some of the features mentioned prior and I’m sure people would love some sort of mixing control.
 
Last edited:
I would definitely love this, especially if it was baked into an amp switcher like the KHE ACS.

Having to run two load boxes seems like such a high cost to pay both money and space wise for this unfortunately.
 
glpg80 said:
Yeah it can be done. No different than running two OTs in parallel in the big boy power amps.

You’d run into phasing issues if the two amps have a different number of gain stages, so you’d have to design some phase compensation circuit to get things to work together and not be canceling each other out by 180 degrees.

It would be heavy, it would be big, but it is definitely possible.

Edit: I should add that it would need to be big and heavy to handle the high current low voltage output of two amps at the same time. That power has to go into a load for each amp independently. You’d need a lot of big iron to transfer and mix that high current into the high current of another transformer, combine them both in phase, and then output the sum of the signals in phase to cabinets. I’d probably want to design some global feedback control at this point to provide some of the features mentioned prior and I’m sure people would love some sort of mixing control.
Click to expand...

Do any such devices like this already exist? I've never heard of any.
 
glpg80 said:
Yeah it can be done. No different than running two OTs in parallel in the big boy power amps.

You’d run into phasing issues if the two amps have a different number of gain stages, so you’d have to design some phase compensation circuit to get things to work together and not be canceling each other out by 180 degrees.

It would be heavy, it would be big, but it is definitely possible.

Edit: I should add that it would need to be big and heavy to handle the high current low voltage output of two amps at the same time. That power has to go into a load for each amp independently. You’d need a lot of big iron to transfer and mix that high current into the high current of another transformer, combine them both in phase, and then output the sum of the signals in phase to cabinets. I’d probably want to design some global feedback control at this point to provide some of the features mentioned prior and I’m sure people would love some sort of mixing control.
Click to expand...

Which power amps run 2 OT's in parallel on the same channel?
 
You must log in or register to reply here.
Back
Top