O/T: Tidying Up My Rack (Noobish Questions too!)

[Pittman75]

Hey Guys:

After purchasing my ball, I have been inspired to utilize everything on it. I have been inspired to consolidate my old gear and clean up what I have.

Here is my current set up:

EBMM Petrucci

into: WD7 Weeping Demon wah>

Mesa/Boogie Triaxis 2.0 (effects loop send)>
G Major (out to) Boss GE-7 Equalizer
into: triaxis effects loop return

Triaxis output 1 to Input 1 on 2:90 Power Amp
Triaxis output 2 to Input 2 on 2:90 Power Amp

Now my question(s):

I have a Marshall 1960 4x12. How do I run both outputs on the 2:90 to the 1960?
I'm afraid I'll blow the power amp because I've never done that before. Plus, here is my noobish question: what are the differences in Ohms? How do I know how which to plug it into? Ex. I have two 4 Ohm outs and 1 8 ohm out on the 2:90 amp. Which do I use?

Perhaps this could help:

 

[beej]

With that cab you get the entire thing in 4 Ohms (left input, mono) or 16 Ohms (right input, mono).

For stereo (flip the switch), you'll be running each side at 8 Ohms. Each 8 Ohm side then has an independent input, left and right.

 

[Pittman75]

Thanks beej! I tried it out, but I think there is something wrong with the power amp. When I turn up the B Channel on the 2:90, it cuts in and out. If I hold the volume pot I get this nasty distorted buzzy noise. I got it used, but I'm no electrician, and I'm not touching it. Sounds like it needs a new pot.

Also, the piezo sounds very glassy and fragile through the Triaxis. I didn't have this problem with other amps. It must be the settings. Anyone use the piezo through this preamp...or am I not supposed to even use it through a preamp? I played it through a Line 6 Spider III combo and it sounded fine through that at GC. When I play it direct through the power amp, it sounds just O.K. but has no real umph to it. Anyone??

 

[Spudmurphy]

I would recommend you run the piezo through a dedicated acoustic amp - you will be amazed what a difference that will make to your piezo sound.

I wish EB would make an amp like the AER?

 

[Astrofreq]

get a splitter and send the piezo straight to the P.A. Sending it into an electric guitar amp is missing out on the tone you should be getting.

 

[beej]

Thanks beej! I tried it out, but I think there is something wrong with the power amp. When I turn up the B Channel on the 2:90, it cuts in and out. If I hold the volume pot I get this nasty distorted buzzy noise. I got it used, but I'm no electrician, and I'm not touching it. Sounds like it needs a new pot.

Yeah, could well be the pot. You could also try swapping tubes between the channels to see if that's it- if you just bought it you may well have a bad tube. But yeah ... take 'er to a tech to have a look-see.

As for the piezo, you might be able to coax some good sounds through that rig; I suspect it'll just take a while to tweak it to your liking. But it will definitely sound better through a full range rig.