Recent content by vick1000

Yes, all Mesa power amps have a preamp section, and act just like a super clean amp.

I ended up putting a 180ohm 4w resistor on the positive lead to the fan, and replaced it with a PC power supply fan (ADDA brand). It moves a bit of air and is almost silent.

Technically you could put another A/B between the existing A/B and the Mesa, and it could control the signal for each channel on the Mesa.

Should work great, you need a stereo signal to use both channels though.

I'm confused? How are you runnig a 5150 (or whatever is available) through one side of the 2:50? You can't switch channels on the 2:50 itself, you can have a device mute the signal going to one side or the other, which would have the same effect.

Run a mono signal from the Preamp output, into the 5153 FX return jack. Be aware the volume on the Pre will control volume, the controls on the 5153 will do nothing, and it will be as if the master volume is wide open.

Love this amp, it's just too hot and fan too loud for my needs. So I'll take her back to GC. Just ordered a 2:50 from Mesa Hollywood to replace her.

You can get a good tone even at very low volumes from all Mesa amps, it just rquires some tweaking of the controls, and setting them with your ears, not your eyes.

OK, so the mini toggle replacing the jack is a no go, the jack is mounted on the I/O PCB with the rest of the jacks. I made two solutions, one is a a 1/4" TS plug with the sleeve solder point cut down to about 1/4", and folded on top of the tip solder point, and soldered to it. I then glued two...

The 2:100 is made for it, with dedicated Recto Preamp inputs and modern mode jack. The thing is an absolute beast though. I thought the Recto pre sounded good with my old 2:50, but I would think the 2:90 would sound better than the 2:50. The 2:90 is also the most feature rich Mesa power amp. The...

Possibly a thermal conductive resistor or part of the PCB becoming comductive under thermal stress.

If that's the case, I think I'm just going to pull the jack off the panel, leave it hanging inside with a TS cable plugged into it (heat shrinked of course), and wire the cable end to a mini toggle, and mount it in the hole.

So it just uses an open/closed signal like a footswitch?

Is there a way to engage it without a Triaxis or Recto preamp?

Deoxit all the jacks and pots... https://www.amazon.com/Hosa-D5S-6-DeoxIT-Contact-Cleaner/dp/B00006LVEU