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megadeth said:
I am wondering if this is possible.
eg: India has a very humid climate, so will a mesa mark series amp survive there?
If an amp sits unused for a long time in an unnatural climate..too cold, damp etc it might not work properly when you fire it up again.
It might work, but sound wrong for a while, and worst case scenario some electronics in the amp will get screwed up as a result of condence/moist/humidity.. I had a marshall that broke from this very reason. The printplates couldnt take it..:)

But as long as you use it frequently, it should be able to handle it...-)
 

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Extreme cold can damage tubes - and maybe extreme heat too. Never heard of humidity being much of a problem unless it gets emerged in water or something. I guess if it's really humid it could have the same effect.
 

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red5 said:
Extreme cold can damage tubes - and maybe extreme heat too. Never heard of humidity being much of a problem unless it gets emerged in water or something. I guess if it's really humid it could have the same effect.
How cold is extreme cold? I keep my amp in a pretty cold room (only place with any space left). We're talking probably about 5 degrees celsius.

Probably no cause for worry I know, but I have a gig in 2 weeks and I want to make sure I have an amp that works! I do let it warm properly every time I use it before I flick it out of standby, but I admit I was curious if tubes would be affected by the temperature change, being glass and all.
 

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They are probably fine, as long as you let the amp warm up to room temperature slowly before plugging it in.

I have found out that cats can blow up amps! One of my cats got into my open back cabinet and unhooked one of the speakers. Probably would have been fine running at 8 ohms through a 16 ohm speaker but the 2 wires were hanging there and occassionally touching (shorting), took me a while to find the problem why my amp was cutting out. I plugged the speaker back in and used the amp for a few days, then one of the tubes arced. I put the old set of tubes in and within a few minutes one of them arced too. So, the shorting wires stressed the power tube circuit (tranny is fine) until they finally arced across the sockets. Unfortunately it is a Trace Elliot and the tube sockets are all PCB mounted. So, given the time it would take to pull all the sockets off the pcb and check the other components, I spent $125 on what seems to be the last power tube board in existence for a SpeedTwin 100. I'll rebuild my old board at my leisure, but figured I shouldn't pass on the new one. Now, $60 or so for a new set of tubes and I'll be back in business.

Yes, the cat is still alive, we have 4 and I'm not sure which one did it although I know one that wouldn't do that, another that most likely wouldn't, that leaves 2 as suspects.... (I wouldn't hurt the cats, they are pretty much our kids, yell at them occasionally, yes, hurt them, no).
 

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learningtolive said:
How cold is extreme cold? I keep my amp in a pretty cold room (only place with any space left). We're talking probably about 5 degrees celsius.

Probably no cause for worry I know, but I have a gig in 2 weeks and I want to make sure I have an amp that works! I do let it warm properly every time I use it before I flick it out of standby, but I admit I was curious if tubes would be affected by the temperature change, being glass and all.
You definitely want to let that warm up. I would definitely put it in a warmer room before even plugging it in and let it warm up for a full 10 minutes to prolong tube life, but I was really thinking more like below freezing.
 

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rgr said:
Yes, the cat is still alive, we have 4 and I'm not sure which one did it although I know one that wouldn't do that, another that most likely wouldn't, that leaves 2 as suspects.... (I wouldn't hurt the cats, they are pretty much our kids, yell at them occasionally, yes, hurt them, no).
I hear the Peking moon is short on meat if you decide to get rid of the bad cats ;)
 

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Electronics fair alot better in colder temps than hot. But then again extreme temps in either direction isnt good. Tube amps can run pretty hot and in a humid envirnment you could get some condensation inside the amp which could cause problems. I have read that some guys stop using their tube amps during the most hot and humid days and run Solid State.
 

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I guess all those blues players down in Mississippi don't play in the summer? j/k, it shouldn't hurt the amps if you use some common sense, moisture inside a tube amp or ss amp with hurt either one. Condensation will form if it is really humid and you take an amp (or anything glass or metal) from a cold, air conditioned room out into the hot, humid "natural" air. Is that a reason not to use a tube amp? Hard to say, never stopped me (or anyone else I knew) when I lived in NC. I guess I can see that severe condensation could cause some arcing from the high voltages in the amp. So, if you see condensation on the metal plate or chassis of the amp, probably not a good time to turn it on. Can't say that I ever really noticed any when I lived in the south though.

By the time tubes get to working temp, condensation on the tube isn't a problem, it is hot enough that moisture on the outside of the tube will have boiled off. Condensation can't form inside a tube, unless it is bad anyway. It is a vacuum, no air, no condensation.

Most likely, the worst thing for the amp is to bring it in from the cold (freezing or below) and fire it up without giving it a chance to come up to warm up to room temperature. But again, we practiced in storage units all year, so in the winter our stuff was sitting in freezing temperatures and we would flip them on standby while getting the heaters going to get the room warm enough to play in.

$0.02,
Roger
 

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^^ A lot of amps these days don't put so much of a beating on tubes like they used to, and people used to play amps that but much more of a beating on their tubes in humid weather. The worst case scenario is you have to replace tubes, usually the power tubes are the first to go. Preamp tubes are totally plug and play which is easy. If you get matched rated tubes and get the amp biased to them, you can drop in new tubes as needed yourself as needed.

As I said, unless the amp actually collects water in it, humidy is generally not very much of a factor. Cold is, as rapid temperature changes are not a good thing.
 
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