Recent content by Bass4lyf

I do have a master control. I guess thats all I will need. I did actually make a mistake though, when plugged into my recording interface, I did compare the amount of gain from just my bass to the amount of gain of my bass through the preamp. Obviously the preamp is gonna be heaps louder...

Hey guys, its been a while since my last post. The preamp has been built and everything is working nicely. When my internet is faster I will post picks up of the build process. Anyway, the gain from the output is way too high. I wired a bypass switch into the preamp and have been...

How can I get an overdrive sound from this preamp? At the moment it is a very clean sounding preamp (im guessing that this is because of the preamp design). Is it even possible to get an overdrive sound from this preamp?

alright sweet! il change the caps and see how that goes

Thats exactly what I am using. So if I change the pot to a 4m, I will beable to hear a decent change in treble when I adjust the pot? If I were to keep the 1m pot, what caps would I put in place of the 47pf and 470pf?

Will changing my 1m treble pot to a 4m pot do much difference? I cant hear any change of sound when I adjust the treble pot so I have a feeling that Ive got something wrong with my soldering. The bass pot works great though. Another question, that .02uf cap that goes to the tone circuit, do...

Because I copied the Ampeg B15 portaflex tone circuit. The pot used in the ampeg for treble is a 4m, I dont have any 4m pots at the moment so I just through in a 1m but I feel that it does not cut or boost treble much at all so I think that a 4m pot would have a bigger effect.

The other 6x4 tube I ordered came in the mail, I plugged it in, it heats up and I now get the B+ voltage. Ive got jacks wired onto it to see if I get sound and I do, its nice and clean, not too much noise which is good. The tone circuit works really nice, except that I need to replace the 1m...

I plan to put it in the effects loop of my ss bass amp. Peavey Tour 450. So I wouldnt need a master control because id just be using the master control on the actual bass amp instead? So I will only need one gain pot at the start? Will I beable to get an overdrive type sound from this preamp...

While I wait for a new 6x4 tube to come in the mail, Im going to sort out the pots and jacks and start drilling all the required holes on the chassis. I was thinking of having Gain 1, Gain 2, Bass, Treble and Master. For Gain 1 Id have a pot at the very start of the whole preamp, for Gain 2...

Ok I think I have got them wired properly, they are both heating equally (barely glowing but I think thats normal/not an issue?) and the heatsinks are not over heating. I went off the diagram attatched. My only problem now is that Im still not getting a B+ voltage and the 6x4 tube isnt...

Can a multimeter measure amps? Seeing that wiring the 12ax7's in parallel off one dc out seems to work at the moment and that wiring the 12au7's in series off an individual dc out doesnt seem to work, could I just wire the 12au7's in parallel aswell and power that off one dc out? This will...

The tubes are in ceramic sockets, which are pre soldered to the board with holes on the board for the wires to be soldered to for the heating. Is my idea of parallel tube wiring correct though?

ok, I changed the voltage from the power supply so that it is now 280v. Turns out I wired the 12au7 tubes wrong, so I think I fixed that. For the DC3 out for the 12ax7's, I have two wires coming off the positive, each wire going to pin 4 on the two 12ax7's, i then have a wire connecting pin 4...

thanks heaps!