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Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 11 Nov 2012, 20:40
by bajaman
hello Immo :)
Sorry about the dark grey - I was trying to get the best resolution artwork for under the 1M posting limit :wink:
I think I tried posting the gerber files as .txt (and many other formats)
I will try again and see.
cheers
Steve

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 11 Nov 2012, 20:49
by bajaman
OKAY
I tried to upload the gerber files as *.txt and got the message that txt files are NOT allowed.
I give up :evil:
bajaman

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 11 Nov 2012, 20:54
by bajaman
Baja fender three band jazz bass preamp 101112.gif
the gif file as requested :wink:

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 11 Nov 2012, 22:19
by lietuvis
bajaman wrote:OKAY
I tried to upload the gerber files as *.txt and got the message that txt files are NOT allowed.
I give up :evil:
bajaman
Hi Bajaman you can try to upload a zip file, previously I was able to do so. right click on mouse then compress file or a few files on mac os, something similar would be in windows, name it whatever you want and upload if its under allowed size to forum

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 11 Nov 2012, 23:22
by bajaman
Baja three band jazz bass preamp gerber files.zip
(20.71 KiB) Downloaded 540 times
Okay - thanks for the suggestion lietuvis :thumbsup
Here is a zip file containing the gerber files for both SMD and through hole boards :wink:

They are both together, but if you know how to use gerber files you should now how to edit them to suit your chosen format :)
cheers
bajaman

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 17 Nov 2012, 05:53
by bajaman
RE: BAJA three band active bass preamp:
Here is a more friendly component value schematic for the through hole board layout.
multisim baja three band active bass preamp 171112.png
I very much doubt that you would hear any difference to the 051112 schematic previously posted in this thread, but I am sure you will find the components much easier to find.
You can use either the LF442 or TL062 (both are equivalent bifet input low current drain op amps for extended battery life :wink: )
I just finished populating a through hole board with these component values - it will be a wee while before I can install it in the Jazz bass I am putting together though - I have to make the body first :lol: I already have the neck, machine heads, pickguard, control plate and pick ups (neodymium button magnet and steel pole piece design) sorted, so won't be too long before I can play it :wink:
cheers
bajaman

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 17 Nov 2012, 06:21
by bajaman
Baja three band active bass preamp through hole board 171112 .gif
Baja three band active bass preamp through hole board 171112 .gif (70.47 KiB) Viewed 9957 times
here is a quick scan of the completed PCB :wink:
missing capacitor (470n) is smd on rear of board :)
NO noisy carbon comp capacitors fitted :roll:
cheers
bajaman

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 17 Nov 2012, 10:00
by alexradium
this is cool,what are the center frequencies for each band?
I'd like to know if there is an existing board with fixed B and T and parametric mids all in one,otherwise i could try to design it myself.
That with a 20dB boost would be the end of all pres.

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 17 Nov 2012, 10:11
by bajaman
this is cool,what are the center frequencies for each band?
look back in the thread :wink: - see the graphs :roll:
HINT: halfway down page 5 :secret:
That with a 20dB boost would be the end of all pres.
Way too much boost :slap:

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 17 Nov 2012, 10:37
by alexradium
ok thank you

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 17 Nov 2012, 16:57
by Duckman
bajaman wrote:
Baja three band active bass preamp through hole board 171112 .gif
here is a quick scan of the completed PCB :wink:
missing capacitor (470n) is smd on rear of board :)
NO noisy carbon comp capacitors fitted :roll:
cheers
bajaman
Looks really beautiful! Baja, you´re a master!

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 04 Dec 2012, 01:54
by rcustoms
my contribution
a complete project on the yamaha's type preamplifier founded in many brands,who cloned this circuit
YAMAHA TMB.pdf
complete project
(1.91 MiB) Downloaded 785 times
I hope you enjoy

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 04 Dec 2012, 02:10
by rcustoms
another ,peavey cirrus bass
cirrus bass.bmp
cirrus bass.bmp (897.25 KiB) Viewed 9880 times
cirrus bass.bmp2.bmp
cirrus bass.bmp2.bmp (898.3 KiB) Viewed 9880 times

Re: Fodera, Sadowsky, aguilar, and other preamps

Posted: 18 Dec 2012, 01:39
by ezugaru
bajaman wrote:RE: BAJA three band active bass preamp:
Here is a more friendly component value schematic for the through hole board layout.
multisim baja three band active bass preamp 171112.png
I very much doubt that you would hear any difference to the 051112 schematic previously posted in this thread, but I am sure you will find the components much easier to find.
You can use either the LF442 or TL062 (both are equivalent bifet input low current drain op amps for extended battery life :wink: )
I just finished populating a through hole board with these component values - it will be a wee while before I can install it in the Jazz bass I am putting together though - I have to make the body first :lol: I already have the neck, machine heads, pickguard, control plate and pick ups (neodymium button magnet and steel pole piece design) sorted, so won't be too long before I can play it :wink:
cheers
bajaman
Hi bajaman, there is no C12 right? it jumps from C11 to C13, greethings!

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 18 Dec 2012, 01:45
by bajaman
Hi bajaman, there is no C12 right? it jumps from C11 to C13, greethings!
correct :wink:

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 17 Feb 2013, 23:01
by B3ar
Hidden tracks on SMD are a pain. And it's always a little odd to trace a partially populated board. SoI'm pretty much giving up on this, the active circuit from my 4 string Dearmond Pilot pro. I'm just gonna assume standard BF Fender-style TMB unless I get a bug to follow through on the trace.

The external connections are on the PDF.

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 18 Feb 2013, 06:53
by alexradium
[quotes="B3ar"]Hidden tracks on SMD are a pain. And it's always a little odd to trace a partially populated board. SoI'm pretty much giving up on this, the active circuit from my 4 string Dearmond Pilot pro. I'm just gonna assume standard BF Fender-style TMB unless I get a bug to follow through on the trace.

The external connections are on the PDF.[/quote]

This is the same Board on the Cort gb75 i had
I did tracing and its all based on gyrators

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 18 Feb 2013, 13:36
by B3ar
alexradium wrote:[quotes="B3ar"]Hidden tracks on SMD are a pain. And it's always a little odd to trace a partially populated board. SoI'm pretty much giving up on this, the active circuit from my 4 string Dearmond Pilot pro. I'm just gonna assume standard BF Fender-style TMB unless I get a bug to follow through on the trace.

The external connections are on the PDF.
This is the same Board on the Cort gb75 i had
I did tracing and its all based on gyrators[/quote]

You know, if I had thought about that, I might have started to look at Cort as it's Korean made. Thanks for saving me the effort on this.

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 19 Feb 2013, 02:40
by rcustoms
B3ar wrote:Hidden tracks on SMD are a pain. And it's always a little odd to trace a partially populated board. SoI'm pretty much giving up on this, the active circuit from my 4 string Dearmond Pilot pro. I'm just gonna assume standard BF Fender-style TMB unless I get a bug to follow through on the trace.

The external connections are on the PDF.
ok folks ,let me help ,i been working on this version of the circuit and has two additional trimmers and a little few more components.i trace everything and this is my work,not checked, but I think together we can finish.
PRE CURBOW AND PILOT.pdf
(95.79 KiB) Downloaded 544 times
I made this PCB with no SMD components
PRE CURBOW AND PILOT 2.pdf
(184.02 KiB) Downloaded 488 times

Re: Fodera, Sadowsky, aguilar, and other bass preamps

Posted: 20 Feb 2013, 03:55
by rcustoms
wiring and trimmers func.
curbow B4_w.jpg
curbow back controls.jpg