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Ampeg SVT-2 speaker jack stuck, melted!?

Ruddwijk

Ruddwijk

Apr 25, 2006
147
6
#1
So, we had a good 8 hour rehearsal yesterday. Afterwards, packing down, the amp seemed decently warm, but not really more than id expect after playing really loud for so long. However, the speaker jack (speakon not working at the moment, so used jack-speakon cable) is now completely stuck in the amp, does not budge, seems to have melted in there or something..!?

There is the odd chance the speaker cable was slightly faulty, as there were some disturbances during rehearsal we could not quite figure where came from.

Similar experiences? Any ideas? Or as we say: haelp :D
 
#2
My first though is that playing loud enough to push an SVT II in practice seems crazy.

That being said, here's the first thought I had about the electronics aspect of this. Most protections in the electronics/electrical word work on heat. Fuses should have blown long before you could have melted anything. That would be the first thing I would check. You need to see if you or a previous owner overrated the fuse. Sometimes when a 5 amp fuse blows people think it's a good idea to put in a 20 amp fuse so it won't blow again. (It's not a good idea.)

The next step would be to pop that cover off and see if your hunch is correct. If that plug is truly melted you got issues. And if you don't work on amps you need to avoid poking around too much in there.
 
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#5
2 pro, should probably have specified! I didn't think of checking the fuses, makes sense they might have been changed by the previous owner. But yeah, maybe it's due for overhaul anyway, just the wrong season to blast money at gear I'll peak in and see what it looks like
 
#7
B-string said:
If an over-rated fuse was installed because a fault in the amp blew the standard one, the output jacks would be the last to fry. It should be looked at, a 1/4" jack/plug overheating being damaged with high output power is not unusual at all.
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Always heed the B!

Yeah I was just "thinking out loud". I defer to your years of experience with these matters.
 
#8
One thing that I have seen more and more these days is the cheap off-shore speaker cables with plugs that look like real plugs but do not share the sampe proper dimensions, nor on 1/4" plugs, the critical dimensions of the tip relief radius. If the radius is too tight, or asymmetrical in the wrong aspect, it can cause some tip jack contacts to get stuck and the tip contact folds under causing the plug to jam. Classic case of saving a dollar to spend $50 in repairs.

Similar problems can occur in non-genuine SpeakOn's, where the contact assembly comes loose from the carrier and tears the mating male panel jack apart internally. (Same thing can happen if somebody gets the bright idea that soldering the cable mounted connector is better, the heat distorts the connector's contact carrier and it no longer sits flat and tight).

These problems are not the fault of the amp, and unfortunately, you may not even be aware of the problems these plugs can cause.
 
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#10
I dont think the tip is jammed. The jack is jammed to the extent where it wont even budge if you try and twist it. Havent had a chance to go to the rehearsal room and look at it again, but yea some funky stuff is going on, fuse will be the first thing to check. Nothing out of the ordinary when it comes to amp usage though, just really loud and low..
 
#11
If the tip contact bends back it can jam into the sleeve and it will be tight as hell. This is why I suspect that it may be the cause.
 
#13
CL400Peavey said:
I think it is crazy you are NOT playing loud enough to push an SVT II.
Click to expand...

In rehearsal? To me, rehearsal is about tightening up songs. The most productive rehearsals I have ever been a part of were done in a way that we could actually talk out things WHILE we were playing a song.

"Hey don't forget we're going to the bridge right here."

"Hey are we going twice through for the guitar solo or once?"

"Hey are you doing the middle or high harmony on this part coming up?"

If you play at a volume too loud to do that, all you are doing is rocking out. Do that in your bedroom. When I bother with rehearsal, which is less often than most, I'm there to get some work done, not rock out with my C0cK out. If you can't talk to each other you can't correct problems. If you have to stop everything to correct problems you are wasting time. This is one of the reasons bands take 6 months or more to be show ready. Learn your parts at home. Run rehearsal like a business meeting. We can grill hotdogs and drink beer afterwards if you like. :thumbsup:
 
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#14
two fingers said:
In rehearsal? To me, rehearsal is about tightening up songs. The most productive rehearsals I have ever been a part of were done in a way that we could actually talk out things WHILE we were playing a song.

"Hey don't forget we're going to the bridge right here."

"Hey are we going twice through for the guitar solo or once?"

"Hey are you doing the middle or high harmony on this part coming up?"

If you play at a volume too loud to do that, all you are doing is rocking out. Do that in your bedroom. When I bother with rehearsal, which is less often than most, I'm there to get some work done, not rock out with my C0cK out. If you can't talk to each other you can't correct problems. If you have to stop everything to correct problems you are wasting time. This is one of the reasons bands take 6 months or more to be show ready. Learn your parts at home. Run rehearsal like a business meeting. We can grill hotdogs and drink beer afterwards if you like. :thumbsup:
Click to expand...

Your goals and perspectives. Does not mean how someone else practices is any less valid.
 
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#15
CL400Peavey said:
Your goals and perspectives. Does not mean how someone else practices is any less valid.
Click to expand...

And that is the point. If your goal is to have a rocking good time, show up, crank up, and jump around the room. But that ain't no rehearsal. That's dudes with guitars hanging out. You probably can't even tell if somebody screws up, much less correct it. That is just a jam session. Those are cool to, albeit not productive. But have fun.


Rehearsal is arranging songs and fixing mistakes. It is not repetition with your hair on fire. It is business.

One "practices" medicine or law......or even baseball. That required constant analysis and change of technique to move forward. It required preventing and correcting mistakes. I ride my bike alongside my kids every day. I am not getting better at bike riding as a result. I am not "practicing" bike riding. I am simply doing it over and over the same way.

You are correct. Goals and perspectives actually define the gathering, to me anyway.

You are also correct in that these are simply my opinions and not meant to imply someone else is wrong, per say. That should be a given, but these days it isn't.
 
#16
two fingers said:
And that is the point. If your goal is to have a rocking good time, show up, crank up, and jump around the room. But that ain't no rehearsal. That's dudes with guitars hanging out. You probably can't even tell if somebody screws up, much less correct it. That is just a jam session. Those are cool to, albeit not productive. But have fun.


Rehearsal is arranging songs and fixing mistakes. It is not repetition with your hair on fire. It is business.

One "practices" medicine or law......or even baseball. That required constant analysis and change of technique to move forward. It required preventing and correcting mistakes. I ride my bike alongside my kids every day. I am not getting better at bike riding as a result. I am not "practicing" bike riding. I am simply doing it over and over the same way.

You are correct. Goals and perspectives actually define the gathering, to me anyway.

You are also correct in that these are simply my opinions and not meant to imply someone else is wrong, per say. That should be a given, but these days it isn't.
Click to expand...

Maybe for the OP they are the most productive way to practice with his band. Being condescending about what the OP does or doesnt do in his practice sessions isnt really useful, and is a subject for the band management sub forum.
 
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#17
CL400Peavey said:
Maybe for the OP they are the most productive way to practice with his band. Being condescending about what the OP does or doesnt do in his practice sessions isnt really useful, and is a subject for the band management sub forum.
Click to expand...

I, literally, posed a question as an off handed comment before posting information related to the OP. How can a question be condescending? (I suppose if I had asked something like "Why are you a fat, ugly loser?" that would count. But I didnt.) Besides, off handed comments before or after relavent information is a way of life here at TB.......hardly frowned upon. You made it a conversation. I suppose I could read back through your posts and find that you always stick right to the topic and never ever make off handed comments? I didn't think so. We're not saving the world here. It was meant more in jest than anything. But you turned it into hard-core analysis of the ins and outs of efficient rehearsal. I just made a little hit and run poke and moved on..... never thought about it again until you brought it up.

Clearly, I ruffled your feathers as someone who prefers to peel paint at "rehearsal", and for that I apologize.
 
#18
agedhorse said:
If the tip contact bends back it can jam into the sleeve and it will be tight as hell. This is why I suspect that it may be the cause.
Click to expand...
I've had this happen with a cab before, and a monster speaker cable. I was able to pull the panel, release the cable, and carefully bend the contact back into place.
Temporarily, soon after I replaced the whole panel with speakon.

BUT, this may not be safe/advisable on the amp end?
 
#19
two fingers said:
I, literally, posed a question as an off handed comment before posting information related to the OP. How can a question be condescending? (I suppose if I had asked something like "Why are you a fat, ugly loser?" that would count. But I didnt.) Besides, off handed comments before or after relavent information is a way of life here at TB.......hardly frowned upon. You made it a conversation. I suppose I could read back through your posts and find that you always stick right to the topic and never ever make off handed comments? I didn't think so. We're not saving the world here. It was meant more in jest than anything. But you turned it into hard-core analysis of the ins and outs of efficient rehearsal. I just made a little hit and run poke and moved on..... never thought about it again until you brought it up.

Clearly, I ruffled your feathers as someone who prefers to peel paint at "rehearsal", and for that I apologize.
Click to expand...


It appears that you turned it into a hardcore analysis of the ins and outs of rehearsal when you clearly defined the standard for what is or isn't a productive rehearsal teeters on how loud one isn't playing, which is laughable.

I can only imagine how much coffee I'd need to have to stay awake through that rehearsal.
 
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