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Plugging Amp heads

João Bourgard

João Bourgard

Jan 21, 2010
157
1
#1
Evening folks,
I got an old home made amp head witch i kinda like.. my question is can i plug it directly to a combo head to get a sort of pre amp?
or is it a bad ideia?

If so, what precautions should i take?

Thanks in advance..
cheers...
 
#4
If what you have is an amplifier, (preamp/poweramp in one unit), then no, you cannot use it as sort of a preamp. If it has a preamp OUT jack, you could use that, but I doubt it does. You risk blowing up your other amp. It would help if you were more specific about exactly what gear you're talking about though.
 
#7
Have you considered connecting it to some speakers to see if it works by itself? Or perhaps a picture of it or some info on where you got it would be more useful.

From the information you provided, what you have might be a Siamese cat instead of an amp.
 
#9
Ofc it works by itself... basicly what i want is a setup like this

bass - Effects - Old amp head - Combo amp

I can obviously connect the old amp head to a speaker cab but the point here is to boost the signal that enters in the combo amp with the old amplifier i got here stashed away...

My question is: Is it safe for the combo? or are there risks of blowing it up?
 
#10
Combos almost always come with just enough speaker that the head can't blow up. And the combo head is never going to put out more power than it's capable of just by adding a preamp. If you were going for a tonal thing, that's one thing, but for extra "power" it's useless.
 
#17
Well, you said you like the tone of the home-made amp, so that leads me to figure you've plugged its output into a speaker cab, right?

What people are saying is do not plug that same amp output into the instrument input of your combo amp. If it drove a speaker cab, it's the power amp output. That's way too hot to feed into the combo's preamp stage.

Hope that helps.

See, that's why people were asking if the home-made amp had a preamp out, in addition to the power amp out. And why they were asking for pictures.
 
#18
Ewo said:
Well, you said you like the tone of the home-made amp, so that leads me to figure you've plugged its output into a speaker cab, right?

What people are saying is do not plug that same amp output into the instrument input of your combo amp. If it drove a speaker cab, it's the power amp output. That's way too hot to feed into the combo's preamp stage.

Hope that helps.

See, that's why people were asking if the home-made amp had a preamp out, in addition to the power amp out. And why they were asking for pictures.
Click to expand...

thank you.. that pretty much answered my question :)
Yeah the amp only have a power amp out..

It has a hole to preamp out where i think in the initial project was a pre amp out... but the guy you gave me the amp never finished it completly...
 

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