Amp cutting out, bad electricity?

Sounds almost like what i sometimes get with my BTB, a loose connection at the jack on the bass, but you changed basses and cables, so, it couldnt be that . . . maybe a speaker cable problem?

 

Possible that the power was dipping low and would occassionally get so low your amp was shutting down, then kicking back on when the power dip fluctuated back up. Its also possible that you had a loose/sloppy connection at your power cord, either where it plugs into the back of your head, or at the outlet end (or extension cord end). Also possible that an extension cord could have an intermittent internal cable damage, just like a bad guitar cord.

I use a Furman PM-8 with a voltmeter and an ammeter on the front, shows the outlet power, and the draw of my rig. Both fluctuate when playing, and there have been MANY times when setting up that I was almost in the "danger" range of low voltage that would dip even lower when my rig was pumping (under 105 volts), and could easily be corrected by plugging into another outlet on a different circuit that wasn't already being burdened by other sources of draw.

 

Good time to buy new cords. The old ones are ready to go bad, and can be used as spares. Change the battery on your bass. All the cheap stuff first.

If that doesn't fix it, since both speakers cut out simultaneously, its not likely a problem there. Then its probably the amp. Intermittent problems are tough to find/fix/verify they're fixed after you replace something.

Talk to Eden once you're sure it's the amp. They fixed my intermittent navigator.

I was bringing a spare preamp wired into the efx loop/tuner out of the nav. When the Nav acted up, I'd bypass it with the tuner mute, that kept me going instantly, narrowed it down to a section of the navigator. Proved it was the nav, not the power amp.

Snaps and pops can be caused by spikes in power, but to actually cut out the power would have to be really stinky. Its possible, but I bet you're not that lucky.

Randy

 

I had that happen on a cruise gig where the power supply was fluctuating. I had an EA 600 and the amp's internal protect was shutting it down when the power dipped. Amp worked fine with good electricity.

 

You brought your own amp onto a cruise ship? What's the matter? Can't take 1970's Peavey amps?

Just use it for the next couple days at home and see what happens. If your cords don't crackle when you jiggle them, then it's more than likely the power sagged and shut it off temporarily.

 

Does your setup work fine at home? could have just been the places you were playing?

Or, if you move about a lot, could it be your input jack on the amp (im assuming it would have the same sound as jack problems on the bass which we know its not)

 

Any chance it was the thermal breaker kicking in and out if the amp was being driven hard?

 

Tubes are cheap, worth a try, but my money is still on the power sag . . . really . . .

 

Another thought - I have an Eden Metro that developed a bad solder joint on one of the circuit boards caused by the speaker vibrations.

 

Hmm... I had a similar experience last night with my GK 400RB head. I'm still trying to figure out what the deal is. The power draw makes sense as to why it might have happened (at least, in my case).

Hopefully for you, replacing the tube will fix the problem. You'll keep us all updated, right?