Live sound went off

[Koog]

Overdriving the preamp will not cause this symptom on either an TB1000 or SVT. Some people do this intentionally and the amps are designed to handle it. The active/passive switch or inputs simply insert or remove a few resistors from the input circuitry.

In theory, and according to the schematic, perhaps. But, I had the experience twice with an SVT Classic. After I made the switching change it never happened again. And, as I have paid close attention to amp switching options with active and passive basses using a variety of different amps and basses, I have not experienced any overheating situations that have caused a shut down.

I wasn't trying to pass bad information or start a controversy....I offered an idea, based on personal experience, for a simple check in the trouble shooting process that perhaps would offer an easy solution.

Check it out. It might help. If not, move on and trouble shoot further.

 

[Wasnex]

In theory, and according to the schematic, perhaps. But, I had the experience twice with an SVT Classic. After I made the switching change it never happened again. And, as I have paid close attention to amp switching options with active and passive basses using a variety of different amps and basses, I have not experienced any overheating situations that have caused a shut down.

I wasn't trying to pass bad information or start a controversy....I offered an idea, based on personal experience, for a simple check in the trouble shooting process that perhaps would offer an easy solution.

Check it out. It might help. If not, move on and trouble shoot further.

I can't explain your experience. The preamps are designed to be overdriven and there is no circuitry in the preamp that senses the distortion and shuts the amp down.

 

[Koog]

There was no distortion. The amp overheated and shut down.

 

[Wasnex]

There was no distortion. The amp overheated and shut down.

Your explanation does not support your conclusion, but I don't see any point in arguing with you. Have a nice day.

 

[THEPA169]

I do live sound and mix 8 bands a night on weekends. I see a lot of players with pedalboards having problems like this, and it is 9 out of 10 a bad audio/power cable etc. on their pedalboard.

Thanks for the advice, I just removed everything yesterday, will be re-wiring again this week. Also noticed some pedals 'popping' when moving the knobs. I guess it's time for some deep clean-up/maintenance.

 

[THEPA169]

I doubt the signal level from your pedal board had anything to do with it. Too hot of a signal would just cause the the preamp to fuzz out.

There are lots of cables involved when you are using pedals. I would start by checking all of the cables.

If you were pushing the amp really hard it might have been going into protect mode. The TB1000 is generally considered a pretty powerful amp that I believe should be able to thrash a single Ampeg 410, so I would be surprised if this were the problem. Did the amp work right away when you bypassed the pedal board? If it took a bit of time, this could indicate the amp overheated and was in protect mode until it cooled down enough to operate again.

I turned it off for a few minutes until I managed to bypass the board, unplugging cables and all that... 'Weird' thing for me is that it lasted for an entire 50+ mins set after that.

 

[THEPA169]

In theory, and according to the schematic, perhaps. But, I had the experience twice with an SVT Classic. After I made the switching change it never happened again. And, as I have paid close attention to amp switching options with active and passive basses using a variety of different amps and basses, I have not experienced any overheating situations that have caused a shut down.

I wasn't trying to pass bad information or start a controversy....I offered an idea, based on personal experience, for a simple check in the trouble shooting process that perhaps would offer an easy solution.

Check it out. It might help. If not, move on and trouble shoot further.

For sure, I'll give it a go. I'm trying out a very exhaustive revision of the whole chain.