I put together this Drive 55 and as far as I can tell, it's working properly (maybe some low end missing) but the output is significantly lower than the input volume of the guitar. Here's what I suspect and wondering if anyone can confirm: I used SMD 4393s for Q1-Q4, but stupidly I only ordered 5 and one of these tiny suckers got away from me, bounced away onto the floor never to be seen again.
So for Q5 I used 2N4393 (TO-18) thinking yeah sure it's all the same. But probing around it seems like everything up until Q5 is normal. So maybe I'm answering my own question here, but wondering if anyone with more experience would know if the TO-18 is screwing things up? After reading Chuck D. Bones' thread about JFETS being little jerks I'm not confident mixing them was a good idea.
Here's a pic, only the in/out jacks are fastened to the enclosure in the photo.
So for Q5 I used 2N4393 (TO-18) thinking yeah sure it's all the same. But probing around it seems like everything up until Q5 is normal. So maybe I'm answering my own question here, but wondering if anyone with more experience would know if the TO-18 is screwing things up? After reading Chuck D. Bones' thread about JFETS being little jerks I'm not confident mixing them was a good idea.
Here's a pic, only the in/out jacks are fastened to the enclosure in the photo.
