iceman0124
New Member
- Joined
- Sep 11, 2008
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Hey guys, longtime marshall owmner, first post.
I've had a JTM 60 since the mid ninetys (bought new) and it served me well for many years, it started sounding kinda stale about 4 or 5 years ago, and since I wasnt doing anything with it other than jamming around the house, I bought a little vox moddling amp. I'm playing again now and wanted my marshal roar back, I cleaned the amp really well, and romoved and claned the tubes, when I fired it up it sounded perfect...and did for several days till today.....the volume was a lot lower, and not near as punchy sounding, looked at the back and the first power tube was dead, I had a hardly ever used set of EL34's (same as whats in it now) and swapped those, it fired just fine in standby, however the first output tube got near meltdown within minutes.....so I shut it down, let it cool and tried one of the original tubes with the replacement that didnt overheat, so far so good, its a different brand and glows a different hue, the orginal tube is a whiteish orange where the replacement is a deeper orange. It sounds great, breaks up a little quicker, and no noticable hum or what not, played around 30 minutes without issue. Main question is.....is what I'm doing a bad idea? If so about how long could I safely get away with it? i'm out of work due to a major spinal surgery and moneys tight, it'll be awhile before i can get the scratch to replace the power tubes +1 12ax7 +biasing.
Any thoughts and advice are appeiciated.
I've had a JTM 60 since the mid ninetys (bought new) and it served me well for many years, it started sounding kinda stale about 4 or 5 years ago, and since I wasnt doing anything with it other than jamming around the house, I bought a little vox moddling amp. I'm playing again now and wanted my marshal roar back, I cleaned the amp really well, and romoved and claned the tubes, when I fired it up it sounded perfect...and did for several days till today.....the volume was a lot lower, and not near as punchy sounding, looked at the back and the first power tube was dead, I had a hardly ever used set of EL34's (same as whats in it now) and swapped those, it fired just fine in standby, however the first output tube got near meltdown within minutes.....so I shut it down, let it cool and tried one of the original tubes with the replacement that didnt overheat, so far so good, its a different brand and glows a different hue, the orginal tube is a whiteish orange where the replacement is a deeper orange. It sounds great, breaks up a little quicker, and no noticable hum or what not, played around 30 minutes without issue. Main question is.....is what I'm doing a bad idea? If so about how long could I safely get away with it? i'm out of work due to a major spinal surgery and moneys tight, it'll be awhile before i can get the scratch to replace the power tubes +1 12ax7 +biasing.
Any thoughts and advice are appeiciated.