Re: Tube amp is dead
Posted: Tue May 25, 2021 9:19 am
BLOOP, my bad.benadrian wrote: Mon May 24, 2021 11:39 pm The amp use KT88 power tubes. A little more that EL34s,cost wise.
Premier Rock Forum
Tube amp is dead
Page 2 of 4
Re: Tube amp is dead
Posted: Tue May 25, 2021 11:09 am
It's understandable. That's an unusual power tube for a jcm 800.Dr Tony Balls wrote: Tue May 25, 2021 9:19 amBLOOP, my bad.benadrian wrote: Mon May 24, 2021 11:39 pm The amp use KT88 power tubes. A little more that EL34s,cost wise.
Yes, ozzma, KT88 is the type of tube and there are many brands. Will the sound change? Probably not significantly. There are people who like to swap tubes and compare for hours. Frankly, I think most tone changes can be compensated for by changing the amp eq very slightly. Besides, this amp is probably going to show very little power amp distortion. Most of the saturation and tonal coloration comes from the preamp of this head.
Cheers!
Re: Tube amp is dead
Posted: Tue May 25, 2021 12:34 pm
The first thing that popped into my head upon reading the title was:
Amp has died
Amp has risen
Amp will rock again
Fucking Catholic indoctrination bullshit, that's what it is.
You can imagine that a lot of guitar players were really pissed off about it. Wait till someone informs them that fret nibs won't make them sound like Jimmy Page!
Amp has died
Amp has risen
Amp will rock again
Fucking Catholic indoctrination bullshit, that's what it is.
Glenn Fricker ran a test by running the same signal into the same amp with the same cab and mic setup, only swapping out the tubes, and he found that it does basically dick but change the level of output gain slightly, which most people will perceive as a difference in sound quality because LOUD!!!???1111!!11one!!1!benadrian wrote: Tue May 25, 2021 11:09 am Yes, ozzma, KT88 is the type of tube and there are many brands. Will the sound change? Probably not significantly. There are people who like to swap tubes and compare for hours.
You can imagine that a lot of guitar players were really pissed off about it. Wait till someone informs them that fret nibs won't make them sound like Jimmy Page!
Re: Tube amp is dead
Posted: Sun Jun 06, 2021 8:14 am
I bought this amp for 800€.
The repair would cost 300€, and I'm not even considering any further damage aside from the tubes (e.g.: blown fuse). These KT88s are insanely expensive.
Really fucking depressed and don't know what to do.
The repair would cost 300€, and I'm not even considering any further damage aside from the tubes (e.g.: blown fuse). These KT88s are insanely expensive.
Really fucking depressed and don't know what to do.
Re: Tube amp is dead
Posted: Sun Jun 06, 2021 8:28 am
I had a Laney Cub 10 which had really gritty (in a bad way) sound - you couldn't turn the tone past 4 or 5 without it sounding terrible. This was after a speaker change.ErickC wrote: Tue May 25, 2021 12:34 pm The first thing that popped into my head upon reading the title was:
Amp has died
Amp has risen
Amp will rock again
Fucking Catholic indoctrination bullshit, that's what it is.
Glenn Fricker ran a test by running the same signal into the same amp with the same cab and mic setup, only swapping out the tubes, and he found that it does basically dick but change the level of output gain slightly, which most people will perceive as a difference in sound quality because LOUD!!!???1111!!11one!!1!benadrian wrote: Tue May 25, 2021 11:09 am Yes, ozzma, KT88 is the type of tube and there are many brands. Will the sound change? Probably not significantly. There are people who like to swap tubes and compare for hours.
You can imagine that a lot of guitar players were really pissed off about it. Wait till someone informs them that fret nibs won't make them sound like Jimmy Page!
I pulled the trigger on a tube change and it was night and day - it became dramatically more usable.
I guess I'm more just highlighting that bad quality tubes vs good quality tubes did appear to matter in my case. If you've already got good tubes in there, then..
Re: Tube amp is dead
Posted: Sun Jun 06, 2021 11:55 am
There's a lot of useful info on tube amps here: https://robrobinette.com/Amp_Stuff.htm
and here: https://www.youtube.com/c/dlab500/videos
Also look around for Gerald Weber's Guitar amp servicing videos. they're out there.
If you have a soldering Iron and a multimeter and some basic related skillz (IE not electrocuting yourself or burning your house down) it's not impossible to diagnose and repair it yourself. If of course you're comfortable and safe about it. If nothing else, the above referenced sources can improve your understanding of how amps work.
and here: https://www.youtube.com/c/dlab500/videos
Also look around for Gerald Weber's Guitar amp servicing videos. they're out there.
If you have a soldering Iron and a multimeter and some basic related skillz (IE not electrocuting yourself or burning your house down) it's not impossible to diagnose and repair it yourself. If of course you're comfortable and safe about it. If nothing else, the above referenced sources can improve your understanding of how amps work.
Re: Tube amp is dead
Posted: Sun Jun 06, 2021 12:01 pm
Thanks a lot mate.thecr4ne wrote: Sun Jun 06, 2021 11:55 am There's a lot of useful info on tube amps here: https://robrobinette.com/Amp_Stuff.htm
and here: https://www.youtube.com/c/dlab500/videos
Also look around for Gerald Weber's Guitar amp servicing videos. they're out there.
If you have a soldering Iron and a multimeter and some basic related skillz (IE not electrocuting yourself or burning your house down) it's not impossible to diagnose and repair it yourself. If of course you're comfortable and safe about it. If nothing else, the above referenced sources can improve your understanding of how amps work.
I have both the soldering iron and the multimeter but my experience with electronics was an utter disaster. I mess up everything. I have no talent for this. I would not feel confident to this myself. But some knowledge would never hurt.
Re: Tube amp is dead
Posted: Sun Jun 06, 2021 1:30 pm
Right, that was another point he made, really crappy tubes or old tubes tend to sound awful because they're not working right, and when people replace their tubes, the difference they're hearing is often a new tube versus a worn-out one. Ultimately, this gives people the impression that changing tubes is always going to make these magical changes in the sound that aren't borne out by the evidence, but because tubes are a religion to some people, they have to loudly justify their purchases no matter how little the difference it makes.andyman wrote: Sun Jun 06, 2021 8:28 am I had a Laney Cub 10 which had really gritty (in a bad way) sound - you couldn't turn the tone past 4 or 5 without it sounding terrible. This was after a speaker change.
I pulled the trigger on a tube change and it was night and day - it became dramatically more usable.
I guess I'm more just highlighting that bad quality tubes vs good quality tubes did appear to matter in my case. If you've already got good tubes in there, then..
Re: Tube amp is dead
Posted: Wed Jun 09, 2021 10:44 am
There is no hard and fast rule that says you have to replace all your power tubes at once. If the amp is dead because of a dead tube, just replace that tube. It might not sound as good as if you replaced all of them, but it will work. Should be cheaper. Tube amps are like cars - shit wears out and they need servicing periodically.
Re: Tube amp is dead
Posted: Wed Jun 09, 2021 12:59 pm
What did the tech say is the problem with the amp? Blown transformer? Any other info?