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Title: Tremolo tube Post by: sinrman68 on February 09, 2009, 04:22:46 AM Hello,
Tim Caswell modified a 100 watt Marshall Tremolo head at S.I.R sound and created a legend (the infamous #39). I've been contemplating one of the 36 watt heads for all the benefits...half power, EF-86 channel, master volume...then I remember reading about Lee Jackson putting an extra preamp tube in all those Marshalls in the 80's and 90's...and the truth breaks about #39...now I'm thinking Bluesbreaker. Question is, how can I pull it off? I asked Nik and he said it would be too close to the Trannies and would pick up a case of noisy. I know you've got to have an idea. I wrote in another section about the 36 watt EF-86 head. I simply don't enjoy the sound of 4 EL-84's running the powerplant. Now I'm thinking about getting one of the bluesbreaker heads and modifying the tremolo tube to act as an extra gain stage!!! The question-how do the KT-66's sound? Any input is appreciated...I've saved up enough to get an amp and with the economy...it might be a while before I'm able to get another!!! Thanks Title: Re: Tremolo tube Post by: wyatt on February 25, 2009, 04:56:13 PM Nik's right, there is a reason the preamp tubes are so far away from the power supply.
You best bet would be to use a 100-watt chassis for a 50-watt amp or JTM-45. You would use two octal socket holes for power tubes, a third if you want to use a tube rectifier, and then final octal socket hole, the one closest to the noval socket holes can have an adapter plate installed to make it a noval socket hole. So, now you can install 3 octal sockets and 4 novel sockets. Then you have to wonder where you are going to use TWO gain stages from the new tube. That's pretty much scratch-building a circuit layout for a whole new amp anyway. You may be better off just going with a JCM 800 and getting the extra gain stage it already has built in. |