I run a GK MB200 through a Barefaced OneTen, and recently, as it had happened before, I am getting a lot of random drops in volume or complete cuts in signal. It does it even when the volume isn't high. I checked the speaker connections, all my cables. On the last gig, fortunately, the guitarist was playing through a bass amp with 2 inputs, so I plugged into his amp. My whole signal chain was fine. I don't know if I'm pushing it too hard. I'm testing it by pushing it hard, and it's never cutting out. Or is it a bad power source? New Orleans is pretty notorious for having poorly wired electricity at venues. I don't know. And if I take it in, and the tech can't get it to act up, I'm not getting anywhere.
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Class D Amp Cutting out on stage, Not at home when testing
- Thread starter papasolly
- Start date
- Feb 12, 2006
- 61,049
- 5
- 221,002
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Try it with another cabinet (and possibly another speaker cable). There are some specific (and well known in the amp design world) conditions where an interaction between the crossover in the cabinet and the amp will cause the amp to protect itself from an illegal load.
Has it just started doing this?
Can you check to see if your tweeter might have failed (related to my comment above).
Has it just started doing this?
Can you check to see if your tweeter might have failed (related to my comment above).
I tested it with my GK neo115 as well, and couldn’t replicate the problem. I have gig at 5, and I’m going to bring both speakers in case it acts up there. I’ll check it with different speakers and probably bring my solid state too as a back up in case it is in fact the amp.
I cranked it all the way up on each speaker at home and the worst I got was a little distortion.
I cranked it all the way up on each speaker at home and the worst I got was a little distortion.
Get yourself a electrical tester and check the venue wiring, especially if you think it might be sketch.
Power Gear 3-Wire Receptacle Tester-50542 - The Home Depot
This won't tell you if you're experiencing brownout conditions, but does give you some clues to the wiring.
Power Gear 3-Wire Receptacle Tester-50542 - The Home Depot
This won't tell you if you're experiencing brownout conditions, but does give you some clues to the wiring.
It’s done it in different cenues, but, again, it’s New Orleans, where the electric is often times poorly set up.
So the common factor for the problem seems to be the amp, and the NO power supply. If his amp is sensitive to power issues the you might have hit on the problem.
Can you try a different amp through your cabs?
Can you try a different amp through your cabs?
Possibly low mains voltage? Many modern amps have brownout protection.
- Feb 12, 2006
- 61,049
- 5
- 221,002
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
I had a similar issue with a Tech21 head, powering 2x 210AV cabs. Would get warmed up and then cut out intermittently. Because it happened with two different heads, I returned the second and went with a TH500. This would happen at home, at rehearsal, or on stage. *shrugs*
JeezyMcNuggles
Inactive
- Feb 23, 2018
- 14,723
- 20,970
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- I suck, but nobody really notices
Dude, I was going to sell my 5 string the other day. As I was cleaning it up and playing it one last time, my volume cut about in half. Then back on again. Then out. Then I hit the bass, and it kicked on again. I figure it's a shirt in the preamp, so I called off the sale until I get it fixed. But, I'm thinking you might have a similar wiring problem.
Edit: "short," people! "Short!" Fer cryin out loud
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Shirts can be sorted, but if you get knickers in a preamp it'll be one crisis after another!!
- Feb 12, 2006
- 61,049
- 5
- 221,002
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Without troubleshooting, how do you know this is the OP's case? It may be, but just as likely not IME.
Sounds like a supplied power issue. I gig a MB200. Have had no issues except for a cruise ship gig. They use a generator and the AC kept dipping below the required minimum. No issues anywhere else.
Not in my case. The MB200 has plenty of power for my gigs and I don't even have the volume past noon. I also gig a Markbass Blackline 250. Plenty loud.
