stratomaster90

I have question, is it possible to plug 2 preamp's to 1 power amp with 1 cab at same time and switching between preamp's through midi footswitch ?

Without buying lot of toys for xxx$.

PSimonR

Yes, but why bother with the midi footswitch when an ordinary one will do the job.

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gumbilicious

sure. all depends on what you need it to do though.

what are you trying to do?

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stratomaster90

But I understand it has to be separate 2 channel power amp and 2 separate preamps plugged to each channel (A/B) ?
Or it can be head-(preamp+power amp) with additional preamp plugged to head's power amp ?

Like Marshall JCM800 head + Randall Blackface Module ?
Are Randall's module's preamp's ?

What I need to do is :
I have 1 lead channel amp and I need to get 2nd clean channel footswitchable for gigs.
So i wonder if it's enough just to buy additional preamp, or I have to sell my head and buy separate power amp + 2 preamps.

gumbilicious

that would provide you a stereo signal (you'd need two speakers)


the would provide you a mono signal (you only need one speaker)



yes, those modules are preamps



you can use one power amp in your case.

i am not too sure what you amp and setup is, but it sounds like you won't even really need 'a whole separate preamp with midi footswitch'. sounds like you just need a distortion pedal.

what is your gear, what music do you play, what is your budget, where are you at?

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stratomaster90

Gear :
JCM 900 SL-X amp
2x12" cab
Boss CE&NS, TC Flashback effects

I don't need dist pedal, SL-X is ok for lead and for solo (with boost).
I need to get full tube metal clean sound, Randall modules seems to be fine for me with sound. But i don't know how can I plug it together at same time with SL-X.
I don't have $ for another power amp or cab for it.

I wish to have system like SL-X head with plugged Randall module to SL-X's power amp. Footswitchable system, which would switching between SL-X's preamp to Randall module conected to SL-X's power amp.
What else is important - effects should works either for SL-X as for Randall module.
Hope I explained understable what I need.
I'm not even sure if it is possible to connect that way.

MatrixClaw

How exactly are you planning on using the Randall module? You do understand you need one of their heads or the RM4 box to use them, right? You cant just plug the blackface module into your Marshall.

Also, using a separate preamp for cleans is kind of the wrong way to do it. You should setup your amp clean, then use a pedal or preamp for the distortion. If you want to keep your amp as the distorted signal, you'd be better off just getting a separate combo amp for your clean sounds and using an A/B switch. Alternatively you could get a head and an A/B switch that has a loadbox and use both into one cab.

Really, it'd just be easier (and likely cheaper) to buy an amp that has a clean and distorted tone that you like, though.

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tas38

If I'm reading this right, you need an a/b switch. One goes to the Marshall, one goes to the preamp. Then with a Y cable, you connect both the preamp and the Marshall FX send into the Marshall FX return.

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stratomaster90

Uh, didnt knew that, sory.
Well SL-X have pretty cool lead, and not well clean ...
Before i bought amp i heard that dist pedals are craps and i should get good lead amp.
And now i guess i regret it.

So maybe other idea how could i get like an additional channel for JCM 800 ?
But it have to be tube cristal metal clean.

gumbilicious

using a multi effects device (like the L6 HD500 and digitech rp1000) would allow you to either bypass the amp's native preamp or utilize it. you could get something like a rp1000 and use some of it's modeling for your clean tones and switch to your amp for your lead tones.

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stratomaster90

Yea but it costs like 700$, for this i'd rather get full second tube amp.
I just sold my x3 live, i'm done with digital stuff, only analogs.

trashedlostfdup

sometimes that work very well,

sometimes the idea isn't good,

sometimes you go through a hell of a lot more sophisticated system and its not worth the time money and effort.

i have ran two heads and two cabs before after i had a guitarist leave for a while, that i needed a different tone for the other guitarist. it was a pain in the ass. we never found the right guy and disbanded three or four months later.

if you want to hear my opinion i would say to pick up another cab. maybe even a 2x12" get two 2x12"s and sell the cab you have (unless its a good cab). and go from there.

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stratomaster90

I don't get a point how new cab would get me additional clean channel for my SL-X ...
I have 2x gb128 and it sounds fine for me, I'm not changing cab.