Amp blown!!!!!!!

[Dave W]

Yes both were on the same circuit. Plugged in with my summit audio td100 and a light

Where does the Summit come into play in the signal chain?

Bass-->Summit-->Amp?

If that is the case, what output are you using from the Summit to go into the amp?

Would my cab work with my beringer? At 4ohms and what's the difference between cables?

I thought you said you were using the Behringer to power you cab in the first post. Is it capable of running at 4 ohms? It should say right on the back. Without a model it's impossible to tell you the answer.

A standard Speakon cable is wired +1/-1
A bridge Speakon cable is wired +1/+2

 

[yaksonator]

Yes that chain is correct bass-summit-amp. I'm going out of the direct out on the front panel. And yes the behringer is 4 ohms checked that first before I even plugged it into the speakers. And the behringer only has a 1/4 speaker output jack.

 

[yaksonator]

Thank god he wasn't mixing cabs aye?? We would had a real case..

Well actually I have mixed cabs before (swr goliath and a workingmans 210 both at 8 ohms connected to a swr 550x at 4ohms. You might not wanna assume next time. Yeah I used the wrong word but the principal was there. Get on board and help instead of jacking around.

 

[Dave W]

And yes the behringer is 4 ohms checked that first before I even plugged it into the speakers.

So then what are you asking about the Behringer?

 

[yaksonator]

Why does the behringer work plugged into the same spot as the others?

 

[GregT]

One other possibity is maybe you actually did get two defective units. Some PF500s have known issues. Not all of them, but some, no doubt. I have one and it has been fine, but others have had problems. Ampeg is said to be very good to work with.

As far as Hartke goes, I've never had one, but it is great to see other folks chime in and stand behind Hartke himself. Must be a pretty good guy to have that kind of customer support.

All the offers of ideas and assistance here are great. It is why I am part of TB too. I just wanted to say that there is always a possibility you got two bad ones; slim as the chances may be. Good luck!

 

[will33]

OP, you're talking to people who've been doing this for 40-50 years, some of whom could concievably build their own amps from scratch. Don't take it personally, but what you describe indicates a level of experience that makes people think wiring problems. You're looking at your cab's label and assuming that's what it is, you're looking at the outlet you're plugging into and assuming what is supposed to be there is there.

 

[yaksonator]

So ultimately it could either be me,the power in the room, the heads themselves, a fuse in both amps, the cables(one question on this is in another thread a TB member mentions that you wouldn't need a bridged mono cable for the lh1000 because of the switch on the back does it internally

Quote:

Originally Posted by Whitbass Does the Speakon Cable need to be rewired to 1+/2+ for the LH1000 used in Bridge Mode?

No, it has a bridge switch which changes it internally, so it's +1, -1 to +1, -1.

so does that mean ill just need to check my current one or get a new one)?? Setup wiring, the speakers crapping out, could be alot of things? I'm just making sure I got all this!

 

[Rockbobmel]

Kinda makes me think his SpeaKon cable has a short in it. You used a different cable for the Bherringer, right?

 

[yaksonator]

Yeah 1/4 speaker cable

 

[Rockbobmel]

Can't try the 1/4 now. You prolly fried the amps with a shorted speaker cable.

 

[bassmeknik]

At this point I concur about scrutinizing the Speakon cable closely. If the cab works with a different amp and speaker cable that kinda reduces the possibilities. I still think the power outlet should be carefully checked for fluctuations in power/neutral/ground circuits as well. This is a puzzle and I am interested to hear the outcome.

 

[bassmeknik]

I know this has been asked but is/are there other big inductive loads on that circuit such as a refrigerator, air conditioner, or other large electric motor also sharing this circuit?

 

[bassmeknik]

My present band practices in the guitarists garage and it has a fridge and a freezer. Whenever one of them cycles on the lights flicker (not good). I use conditioners on everything but I worry every time they go on...

 

[yaksonator]

No nothing like that just music gear. Can I just get a standard ohm meter or multimeter to test the speakon cable and outlets or does it have be a certain one? Kinda clueless in this area?

 

[JimWasHere]

At this point I concur about scrutinizing the Speakon cable closely. If the cab works with a different amp and speaker cable that kinda reduces the possibilities.

I notice... The only thing that changes between dead amps and live amps is the speaker cable. Odd, eh?

I still think the power outlet should be carefully checked for fluctuations in power/neutral/ground circuits as well.

Low voltage only kills digital stuff. Changes in voltage, same thing. Ground issues... They just make noise. Surges kill stuff. But only the bass amps are dying. The guitar amps, PA, and cell phone chargers would all go **** up with a surge too. I think narrowing it down to the cable is the right direction. OP, can you get a friend and a continuity tester and see if you can wiggle that speaker cable into a short?

 

[Splore]

A power conditioner or different speakon cable could well be the solution. If your Speakon cable says Monster on the side it can be exchanged at any retailer with no receipt, or box, no questions asked, any time, for life. Several Companies have similar policies, google the manufacturer warranty.

Every lockout/jamroom I have ever played seemed to be built eons ago, and have terrible wiring. I would never plug in my rig anywhere without my power conditioner. You can get rack mountable unit or the ones that are slightly bigger than a power strip. This small bit of peace of mind to save thousands of dollars of equipment. It will also stop volume fluctuations due current loads constantly changing. Just because one outlet in the room is stable, proves nothing about the other outlets in a room.

A quick google search shows tons of power conditioners. A store with a good return policy will be a bonus as well. The unit can be returned with no loss of money if the issue persists.

https://www.google.com/search?sourc...,cf.osb&fp=cf2d4bb8906d997f&biw=1473&bih=1012

 

[JimWasHere]

Every lockout/jamroom I have ever played seemed to be built eons ago, and have terrible wiring. I would never plug in my rig anywhere without my power conditioner. You can get rack mountable unit or the ones that are slightly bigger than a power strip.

Just to be right out there... Age has nothing to do with the condition of the wiring, or danger to your equipment.

This small bit of peace of mind to save thousands of dollars of equipment.

The only thing that will destroy your equipment (minus digital stuff) is surges.

It will also stop volume fluctuations due current loads constantly changing.

Uhh... If you are playing next door to an industrial something, maybe. But probably not.

Just because one outlet in the room is stable, proves nothing about the other outlets in a room.

Really, the chances of a single outlet being the cause of dead equipment... Darnitall, I just got hit by lightning, and it really stung!

Aside from digital, amps don't care about ac frequency, low volts, or imbalanced ground. (generalization, I know) You may be able to hear it in the form of a ground loop, but it's not going to blow an amp. High volts (really high) or surges, those can be bad.

 

[Munjibunga]

Sounds like a short in the speaker cable.

 

[Downunderwonder]

It does, doesn't it?!

Can the Hartke run bridged into 4ohm? I suppose it can since nobody else mentioned that being bad.