Author Topic: which diy bass preamp?..  (Read 53079 times)

deadastronaut

Re: which diy bass preamp?..
« Reply #40 on: March 20, 2013, 10:57:11 AM »
haven't tried the 'sunn' one with the stack on the end yet...
http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

JebemMajke

Re: which diy bass preamp?..
« Reply #41 on: March 20, 2013, 12:52:08 PM »
Than you should have nice od. Because without tonestack mine had some nice od tones. With a little boost from voodoo labs overdrive it was like a high gain distortion.

Edit

I;ve forgot to mention in the last build I've used 2sk30gr's in both q1 and q2.
« Last Edit: March 20, 2013, 12:54:01 PM by JebemMajke »

B Tremblay

Re: which diy bass preamp?..
« Reply #42 on: March 20, 2013, 07:24:08 PM »
Have you checked out Ginger?
B Tremblay
runoffgroove.com

deadastronaut

Re: which diy bass preamp?..
« Reply #43 on: March 25, 2013, 10:52:48 AM »
^ yeah that looks cool too..

i'm quite happy with this at the mo, ...still no joy on that switch btw.. ::)

anyway heres a demo of what i have so far...

http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

JebemMajke

Re: which diy bass preamp?..
« Reply #44 on: March 26, 2013, 05:40:45 AM »
I'll make one tonight. I'm wondering wtf is wrong with the sw.

deadastronaut

Re: which diy bass preamp?..
« Reply #45 on: March 26, 2013, 05:50:52 AM »
hi misa, me too...ive tried it several possible ways...

have you a layout of the one you've built...then i can see whats going on with it.

http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

JebemMajke

Re: which diy bass preamp?..
« Reply #46 on: March 26, 2013, 08:28:32 AM »
Not really. I'm always using raster board for my designs. I'll do one tonight and I'll post some ugly looking pictures of it  :icon_redface:

deadastronaut

Re: which diy bass preamp?..
« Reply #47 on: March 26, 2013, 08:30:26 AM »
okey dokey...cool. 8)
http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

Tubebass

Re: which diy bass preamp?..
« Reply #48 on: March 26, 2013, 09:38:58 AM »
Looks like you're missing a cap on that deep switch.
More dynamics????? I'm playing as loud as I can!

JebemMajke

Re: which diy bass preamp?..
« Reply #49 on: March 26, 2013, 09:59:18 AM »
Rob, have you wired it this way. Mid pot to the ground and sw to the ground

deadastronaut

Re: which diy bass preamp?..
« Reply #50 on: March 26, 2013, 10:01:21 AM »
i'll give it a go in a bit, ... :)
http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

deadastronaut

Re: which diy bass preamp?..
« Reply #51 on: March 26, 2013, 01:04:09 PM »
nope, if you lift the mid pots ground there is a  massive boost in level.

but not a bass boost. ...i'll see what you come up with...

http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

JebemMajke

Re: which diy bass preamp?..
« Reply #52 on: March 26, 2013, 04:24:13 PM »
What do you mean "lift the mid ground"? Just check if that 100k resistor is connected to the ground. Ofc leave mid pot connected to the ground.

J0K3RX

Re: which diy bass preamp?..
« Reply #53 on: March 26, 2013, 04:42:24 PM »
1k mid pot always stays grounded. The way it is, switch open takes the path of R6 / switch closed takes the path of least resistance to ground... right?
« Last Edit: March 26, 2013, 04:48:27 PM by J0K3RX »
Doesn't matter what you did to get it... If it sounds good, then it is good!

deadastronaut

Re: which diy bass preamp?..
« Reply #54 on: March 26, 2013, 04:49:43 PM »
^ yep.. :)


@misa: i was just trying various ways of switching it... ;D


heres a clip of how that is wired as in the diagram...first clip is how i had it...second is with switch

does this sound right?/the same as yours?...bit of a level diiference?

https://dl.dropbox.com/u/7464107/bass%20sw%20test1.wav
http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

J0K3RX

Re: which diy bass preamp?..
« Reply #55 on: March 26, 2013, 05:15:39 PM »
You might have another look at the original bassman schematic... I see some differences. :icon_confused:
Doesn't matter what you did to get it... If it sounds good, then it is good!

JebemMajke

Re: which diy bass preamp?..
« Reply #56 on: March 26, 2013, 05:27:54 PM »
Well for me without sw it sounds like jazz bass. Slap is great, it's nasal and great for lead and jazz, blues, 80's. With sw it's ... well it's very close to Korn type of sound ... it's very modern and almost ghetto type bass. But, again my usual eq settings are mids at 8 o'clock, treble at 12 o'clock, bass 3 o'clock. Maybe you've wired that sw the wrong way. When you think it's on it's actually off, and vice versa. The second part of the clip should be similar to mine with sw off. That's how alembic FB-2, fet version, sounds. You can take the sw out and place the jumper there. And it will always be on. Also there is another mod with the tonestack. I'll post it soon.

deadastronaut

Re: which diy bass preamp?..
« Reply #57 on: March 26, 2013, 05:46:09 PM »
@jim: which differences?...which schemo?

@misa: yeah i like the sound of both, but does yours have that difference in levels?


http://www.youtube.com/user/100roberthenry

https://deadastronaut.wixsite.com/effects

^ SPACE PATROL FUZZ/ NANO-8 MIDI DRUMS /CHASM REVERB / TREMSHIFTER / FAZE FILTER/ABDUCTOR II DELAY pcb's + WAH LIGHT PLATES. and sausa

J0K3RX

Re: which diy bass preamp?..
« Reply #58 on: March 26, 2013, 06:07:25 PM »
@jim: which differences?...which schemo?



For one, the tone stack values (caps, resistors etc.) are different? Maybe it's scaled, I dunno? Might try the original values to get more tonal control?
Doesn't matter what you did to get it... If it sounds good, then it is good!

JebemMajke

Re: which diy bass preamp?..
« Reply #59 on: March 26, 2013, 06:22:08 PM »
@jim: which differences?...which schemo?

@misa: yeah i like the sound of both, but does yours have that difference in levels?



Yes, but not that big.

@Jim
Yes it's scaled, ten times. To try and lower the overall noise issue.