Tiny terror really hot? Sounding worse after a while
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- Orange Master
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Tiny terror really hot? Sounding worse after a while
How hot should a tiny terror get? After playing mine with volume on about 1 oclock and gain set about 2 oclock on 7 watt mode for half hour the whole casing is really quite hot. Lke touching the oven door hot. you can hold your hand on it but it is still hot.
Is this normal??
Also my amp starts to sound worse the longer i play it.? It sounds good for about 15 mins then i leave it idle for a bit maybe ten mins then go back and it sounds really bad compared to before. Any ideas??
Thanks
Is this normal??
Also my amp starts to sound worse the longer i play it.? It sounds good for about 15 mins then i leave it idle for a bit maybe ten mins then go back and it sounds really bad compared to before. Any ideas??
Thanks
Tone is everything
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- New Member
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How long have you had the amp? The sound quality problem could be a failing/bad tube.
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Gibson SG
Les Paul Studio
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Orange AD140HTC-> B-52 AT-412
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- Duke of Orange
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I'd take a good look at the (larger) power valves when the amp is first on and again when fully warmed up. Normally valve amps do get pretty hot - nature of the beasts really. But there are limits.
You particularly want to look out for 'red plating'...
http://forum.orangeamps.com/viewtopic.php?t=15651
Because ignoring it can lead to...
http://forum.orangeamps.com/viewtopic.php?t=10331
Also the sound should be getting BETTER as the amp gets up to full working temperature. That is normal for every valve amp I've owned or regularly used. Going the other way means something definitely isn't right.
Andy.
You particularly want to look out for 'red plating'...
http://forum.orangeamps.com/viewtopic.php?t=15651
Because ignoring it can lead to...
http://forum.orangeamps.com/viewtopic.php?t=10331
Also the sound should be getting BETTER as the amp gets up to full working temperature. That is normal for every valve amp I've owned or regularly used. Going the other way means something definitely isn't right.
Andy.
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- Orange Master
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Cheers guys for the help. Will check the colour tonight but i dont remember it being any different.
One thing i have found tho as i took the cover off after using for half an hour the transformers are the biggest reason for heat, these are very hot compare to everything else.
I say it gets worse as i think it starts to sound harsh. Now im changing my speaker in the next few days anyway cos the stock one in my cab is crap so i'll see if it makes a difference.
The amp is about 2 weeks old thats why i asked wether or not they normally get this hot?
Is getting the biasing checked easy enough?
One thing i have found tho as i took the cover off after using for half an hour the transformers are the biggest reason for heat, these are very hot compare to everything else.
I say it gets worse as i think it starts to sound harsh. Now im changing my speaker in the next few days anyway cos the stock one in my cab is crap so i'll see if it makes a difference.
The amp is about 2 weeks old thats why i asked wether or not they normally get this hot?
Is getting the biasing checked easy enough?
Tone is everything
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- Duke of Orange
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Bias shouldn't really need checked with that amp. It is cathode biased, meaning a broad enough degree of self adjustment for most valves to be run in range.
You sure you are running the right impedance speaker with the amp?
Andy.
You sure you are running the right impedance speaker with the amp?
Andy.
Only dimly aware of existence, a dimly existing awareness...
You get a wonderful view from the point of no return.
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- Orange Master
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Hi, I'm playing through my laney lv200 combo speaker at the minute which is a celestion super 65. I wasn't sure on ohms s I checked the ohms between the positive and negative and it read 7.9 ohms so I'm using the 8 ohm jack.
I'm getting my g12t75 speaker today and will be running through that till I buy a cab. Its a load hotter than my epi amp so was woried a bit.
Cheers
I'm getting my g12t75 speaker today and will be running through that till I buy a cab. Its a load hotter than my epi amp so was woried a bit.
Cheers
Tone is everything
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- Duke of Orange
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Hope you like it. Personally I don't find they work best with Orange amps though. Reason being I find they don't really put out the typical low / low-mids grunt of Oranges well enough. There are a few who do like them with Orange amps though and there are no rules. If it works for you then thats AOK!Mrjones2004x wrote:Hi, I'm playing through my laney lv200 combo speaker at the minute which is a celestion super 65. I wasn't sure on ohms s I checked the ohms between the positive and negative and it read 7.9 ohms so I'm using the 8 ohm jack.
I'm getting my g12t75 speaker today and will be running through that till I buy a cab. Its a load hotter than my epi amp so was woried a bit.
Cheers
Doesn't get us any further forward on your ? amp problem though...
Andy.
Only dimly aware of existence, a dimly existing awareness...
You get a wonderful view from the point of no return.
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- Orange Master
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- Duke of Orange
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Listen, valve amps do get hot. Your amp may just be normal, or may not. Kind of hard to tell from here.Mrjones2004x wrote:Well the speaker was the right rating so dont know?
Ive swapped to using the 8ohm celestion so see how that go's. valves look ok and not glowing bad so ????
Like i say the transformers get real hot and the whole case warms up to. Will try again soon.
Reason they get so hot though is that they are much less efficient than solid state amps at converting electrical power from the mains into electrical power to the speakers. A typical 100w rated solid state amp may be drawing say 150w from the wall. (So say around 60 - 70% efficient, ball park figure.)
A 100w rated valve amp is probably going to draw nearer 300W from the wall as they are usually only about 30% efficient, ball park.
The power loss between input and output basically goes up as heat, and all valve amps put out way more heat energy than sound energy...
Let us know how it is behaving itself now though.
Andy.
Only dimly aware of existence, a dimly existing awareness...
You get a wonderful view from the point of no return.
You get a wonderful view from the point of no return.
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- Orange Master
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- New Member
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- Orange Master
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Hi,
Right, went jamming last night and played through the new celestion G12T-75 speaker 8 ohms rated plugged nto the 8ohms output on the amp. Played for about 3 hours and had about 15 mns break somewhere and it was running half power on 15 watt mode half power the whole time.
The case got mildly warm to touch nothing like it was getting, the warmest part was the right hand back corner looking from on top.
I did measure and it did say the old speaker was 8 ohms so why would this of made the amp run so hot and this speaker doesnt??
Cheers.
Didnt notice any change in sound either after a while, the only time i noticed a change was that i turned it off for about ten mins then was different when i turned it back on for a bit then went back to normal which is standard fr tube amp tho i guess as they need to warm up again properly.
Right, went jamming last night and played through the new celestion G12T-75 speaker 8 ohms rated plugged nto the 8ohms output on the amp. Played for about 3 hours and had about 15 mns break somewhere and it was running half power on 15 watt mode half power the whole time.
The case got mildly warm to touch nothing like it was getting, the warmest part was the right hand back corner looking from on top.
I did measure and it did say the old speaker was 8 ohms so why would this of made the amp run so hot and this speaker doesnt??
Cheers.
Didnt notice any change in sound either after a while, the only time i noticed a change was that i turned it off for about ten mins then was different when i turned it back on for a bit then went back to normal which is standard fr tube amp tho i guess as they need to warm up again properly.
Tone is everything
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- Orange Master
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- Orange Master
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That's 6% too high!Mrjones2004x wrote:Ok this must be the prob................ It only does it at my house? Maybe wall voltage to high? We have a problem in our flat that we go through a really high amount of lightbulbs too and someone once told me this would cause a problem.
MMMMMM, only 244Volts???
I can see why your trannies get hot... I mean, most devices have a switch to switch between 220 and 230v, which is a difference of only 4,5%!
I'd make some calls as soon as possible, I mean, what if one of your other electic devices catch fire in the middle of the night or something?
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