bassetman Posted March 23, 2018 Share Posted March 23, 2018 Interesting night at the gig. Half way through the night my amp made a fuzz noise and went quiet. A look showed that V6 tube was out it’s a 12at7 tube. My only spare...yes I know my fault...was a 12ax7 from V1 (normal channel pre amp) so I swapped it out to finish up.....sounds incredible. I can throw my OD pedals away. Wonderful breakup starting about 4 on the volume that just gets better as you turn it up.....I’m leaving it there. Link to comment Share on other sites More sharing options...
MichaelT Posted March 23, 2018 Share Posted March 23, 2018 That makes me think a bit. Since I haven't owned a tube amp since 1983 (Fender Twin Reverb), should I be concerned with keeping a few tubes on hand for my new Marshall DSL100HR head and Marshall DSL40CR combo? I would hate to be at a gig and have that happen and not have a replacement. I guess I should be doing some research on doing proper maintenance on a tube amp? Link to comment Share on other sites More sharing options...
bassetman Posted March 23, 2018 Author Share Posted March 23, 2018 I like to have a 12ax7 and a 12at7.....just in case. This is an amp I rescued and repaired. V6 was likely an original tube....it was in when I got it. I only replaced enough to make it work being cheap. I’m getting a whole set and a bias probe now that I know enough to be confident in what I’m doing. It’s my first tube amp and I knew nothing before getting it. Lots of good books on the subject though. Link to comment Share on other sites More sharing options...
rct Posted March 23, 2018 Share Posted March 23, 2018 When I get a new amp I call up Luther and I get a full set in it and put the originals in the Car Box. The Car Box has been to every gig ever with me, but it never leaves the car. It's full of stuff, third and fourth spare mic and guitar cables, more extension cords and power strips, that kind of thing. And a box of tubes and fuses that I just can't break the habit of carrying, for nothing. rct Link to comment Share on other sites More sharing options...
bassetman Posted March 23, 2018 Author Share Posted March 23, 2018 In the last six months gigs have gone from occasional to two or three a week. Takes a lot more prep. If something will fail it will be just at the worst time. Being prepared is everything. Gotta get a box like yours RCT. Link to comment Share on other sites More sharing options...
NHTom Posted March 23, 2018 Share Posted March 23, 2018 When I get a new amp I call up Luther and I get a full set in it and put the originals in the Car Box. The Car Box has been to every gig ever with me, but it never leaves the car. It's full of stuff, third and fourth spare mic and guitar cables, more extension cords and power strips, that kind of thing. And a box of tubes and fuses that I just can't break the habit of carrying, for nothing. rct Great Idea!!! no need to haul it in and out, but good to know it's "right outside that door" in an emergency. NHTom Link to comment Share on other sites More sharing options...
surfpup Posted March 24, 2018 Share Posted March 24, 2018 Interesting night at the gig. Half way through the night my amp made a fuzz noise and went quiet. A look showed that V6 tube was out it’s a 12at7 tube. My only spare...yes I know my fault...was a 12ax7 from V1 (normal channel pre amp) so I swapped it out to finish up.....sounds incredible. I can throw my OD pedals away. Wonderful breakup starting about 4 on the volume that just gets better as you turn it up.....I’m leaving it there. Yeah, adjusting the gain via 12AX7, 5751, 12AT7, 12AU7 is a great (and oft used) trick. Here's a handy chart comparing their gain values... http://www.thetubestore.com/Gain-Factor Link to comment Share on other sites More sharing options...
jdgm Posted March 24, 2018 Share Posted March 24, 2018 Funny...I too have an old jiffybag (its a big padded envelope thankyou) with old tubes and fuses in, down the back of my car seat.... Last year I stocked up on slo-blo amp fuses, got about 4 different values.... Link to comment Share on other sites More sharing options...
surfpup Posted March 24, 2018 Share Posted March 24, 2018 I used to carry all that stuff but in the past few years I have stopped. Never blown a fuse or a tube. Knock wood. I do, however, carry a tiny solid state amp that I can use in a pinch if need be. Link to comment Share on other sites More sharing options...
Megafrog Posted March 24, 2018 Share Posted March 24, 2018 That makes me think a bit. Since I haven't owned a tube amp since 1983 (Fender Twin Reverb), should I be concerned with keeping a few tubes on hand for my new Marshall DSL100HR head and Marshall DSL40CR combo? I would hate to be at a gig and have that happen and not have a replacement. I guess I should be doing some research on doing proper maintenance on a tube amp? Marshall DSLs seem to eat tubes on me. Always have extras. Link to comment Share on other sites More sharing options...
rct Posted March 25, 2018 Share Posted March 25, 2018 Marshall DSLs seem to eat tubes on me. Always have extras. Marshalls seem to eat tubes to me. Always have Fenders! [laugh] rct Link to comment Share on other sites More sharing options...
bassetman Posted March 25, 2018 Author Share Posted March 25, 2018 Thanks Surfpup that is a good vid. I got a second chassis that I’m rebuilding to hear the difference with all new caps in the amp. On the current one the only caps I did were in the filter section.lots to learn, fun fun. Link to comment Share on other sites More sharing options...
surfpup Posted March 25, 2018 Share Posted March 25, 2018 Marshalls seem to eat tubes to me. Always have Fenders! [laugh] rct They totally do. The JTM45 may be an exception since it's basically a Fender Bassman with a Marshall tonestack. Link to comment Share on other sites More sharing options...
badbluesplayer Posted March 25, 2018 Share Posted March 25, 2018 Marshall DSLs seem to eat tubes on me. Always have extras. According to people who know these things, the only current production tube that is O.K. for V3 in a Marshall is the Sino 12ax7. :unsure: Link to comment Share on other sites More sharing options...
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