Out of interest did you find this to be gainy right from the start of the gain knob? I just finished it and it sounds great, but pretty hot from the off. Cheers, Ben.
I've had a little time off so I've had some extra build time this week. These BAJA preamps are excellentt. This one sounds great with a treble booster. So did the HIWATT DR103. One of my first projects was a Rangemaster kit from Small Bear. It loves these circuits.
I used a Log taper for the Gain pot and the layout is 19X23, not 19X24. Thanks!
hi, It is certainly NOT an error, but I'm missing an electro cap from 9V to Ground... It could easily be placed on board by adding a link from row P to row T, and moving the cut and the 22uF cap 3 columns to the right... At least this is what I'll choose -- I've cut the vero to size already, but haven't done anything else, and so I can even move that cut :) _ _ _ _ But if someone has already built it, there might be an empty row at the bottom... cause the layout says 24 rows while it is only 23 :) So in that case, a link from row P could be made to this empty bottom row, say, "row X", and the cap could be placed there without any modification to the board... But then again, why modify what already works? :) _ _ _ _ _ _ _ PLUS 1: I'll raise the 1uF at the Vref "junction" to 47uF...
can't find ground?
ReplyDeleteThanks for catching that. Updated.
DeleteVerified! Sounds awesome, added a ROG omega trebleboost in the box with it, its a great combo.
ReplyDeleteThanks! Just tagged it. And thanks for mentioning ROG Omega. Will whip up a layout for that one...
DeleteNo worries. The Omega is a really useful Treblebooster, I put the bias trimmer on an external pot instead as stated in their writeup:
Delete"7V proved to be faithful to the Rangemaster tones, while a lower drain voltage in the range of 4.5 to 5V was somewhat better for the fat sounds."
Out of interest did you find this to be gainy right from the start of the gain knob? I just finished it and it sounds great, but pretty hot from the off. Cheers, Ben.
DeleteI've had a little time off so I've had some extra build time this week. These BAJA preamps are excellentt. This one sounds great with a treble booster. So did the HIWATT DR103. One of my first projects was a Rangemaster kit from Small Bear. It loves these circuits.
ReplyDeleteI used a Log taper for the Gain pot and the layout is 19X23, not 19X24. Thanks!
hi,
ReplyDeleteIt is certainly NOT an error, but I'm missing an electro cap from 9V to Ground...
It could easily be placed on board by adding a link from row P to row T, and moving the cut and the 22uF cap 3 columns to the right...
At least this is what I'll choose -- I've cut the vero to size already, but haven't done anything else, and so I can even move that cut :)
_ _ _ _
But if someone has already built it, there might be an empty row at the bottom... cause the layout says 24 rows while it is only 23 :)
So in that case, a link from row P could be made to this empty bottom row, say, "row X", and the cap could be placed there without any modification to the board...
But then again, why modify what already works? :)
_ _ _ _ _ _ _
PLUS 1:
I'll raise the 1uF at the Vref "junction" to 47uF...