bolero Posted September 7, 2013 Share Posted September 7, 2013 this is a killer little amp...the low volume cleans are kind of sterile & ice picky, but when you crank it up, it really roars kind of bizarre because they surely didnt design it to have such a throaty raunch when they built it, in 1962!! I replaced the stock 12" speaker with it's wimpy ceramic magnet with an alnico Bell & Howell speaker, out of a film projector I believe? it has a light, responsive cone, and on certain notes it gives out some nasty cone cry ( at least I think it's the speaker....you can hear it at 1:03-1:04 in the clip ) 1x12, 2xEL84 so it's about 15-18 watts I guess lots of mistakes I forgot how half of these songs go...but you get an idea of how the amp sounds https://soundcloud.com/roofleaks/bird-ga18 Link to comment Share on other sites More sharing options...
koula901 Posted September 7, 2013 Share Posted September 7, 2013 Gosh, that sounded wonderful! and you have some nice chops, Bolero. Link to comment Share on other sites More sharing options...
58super Posted September 7, 2013 Share Posted September 7, 2013 Sounds great and nice playing. That B&H speaker is a Jensen so no wonder it sounds good. Link to comment Share on other sites More sharing options...
bolero Posted September 9, 2013 Author Share Posted September 9, 2013 thx guys...I've been experimenting with recording & mic placement, which is another reason I'm recording/posting these clips Link to comment Share on other sites More sharing options...
slider313 Posted September 9, 2013 Share Posted September 9, 2013 Nice! Some nice "crunch" from that one. If you want to warm that amp up, and get a little more gain out of it, here's what I did to my friends: There are three 500pf caps in the circuit; one each on the bass and treble pot and one in the circuit off of V2b. Change both on the pots to a .02 and the one off of V2b to a .01. If you've noticed, only one half of V1 is bypassed with a 25uf@25v in parallel with a 2.2k resistor. Do the same to the other triode. Find the 2.2k coming off of V1b and install a 25uf@25v in parallel. You can ground it to the second input just like the one coming off the first triode. Link to comment Share on other sites More sharing options...
smurph1 Posted September 9, 2013 Share Posted September 9, 2013 Nice!! Congratulations on a great find!! Amazing how they changed over the years..Mine is a 59 tweed model with red pilot light, 2 inputs, and volume and tone top mounted.. Link to comment Share on other sites More sharing options...
bolero Posted September 10, 2013 Author Share Posted September 10, 2013 Nice! Some nice "crunch" from that one. If you want to warm that amp up, and get a little more gain out of it, here's what I did to my friends: There are three 500pf caps in the circuit; one each on the bass and treble pot and one in the circuit off of V2b. Change both on the pots to a .02 and the one off of V2b to a .01. If you've noticed, only one half of V1 is bypassed with a 25uf@25v in parallel with a 2.2k resistor. Do the same to the other triode. Find the 2.2k coming off of V1b and install a 25uf@25v in parallel. You can ground it to the second input just like the one coming off the first triode. aha! thanks I may try that out!! Link to comment Share on other sites More sharing options...
SouthpawGuy Posted September 10, 2013 Share Posted September 10, 2013 Cool amp, can't say I've ever seen one over here. Link to comment Share on other sites More sharing options...
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