Xotic - RC Booster

soulsonic · Post by **soulsonic** » 09 Apr 2009, 08:16

Previous schematic has a small mistake... please delete the attachment.
This schematic is now correct.

: RC Booster corrected

SPeter · Post by **SPeter** » 09 Apr 2009, 09:53

Thanks !

Fuzzer · Post by **Fuzzer** » 09 Apr 2009, 19:12

Thank you very much Soulsonic.

madbean · Post by **madbean** » 09 Apr 2009, 19:34

I've already got a layout for this based on one of the earlier schems. It needs a couple of slight modifications, but I'm happy to share.

quaternotetriplet · Post by **quaternotetriplet** » 15 Apr 2009, 06:18

Hi mad bean please post it. Interested here.

madbean · Post by **madbean** » 15 Apr 2009, 13:54

Not verified. Images are 600 DPI.

Code: Select all

Part	Value
C1	47n
C2	1uF
C3	150p
C4	33n
C5	33n
C6	4n7
C7	1uF
C8	4n7
C10	100n
C11	10uF
C12	10uF
C13	10uF
C14	2u2
	
R1	1M
R2	10k
R3	1M
R4	10k
R5	22k
R6	Jumper
R7	47k
R9	4k7
R10	33k
R11	4n7
R12	10k
R13	470k
R14	10k
R15	470R
R16	100k
R17	22k
R18	6k8
R19	15k
R20	33k
	
IC1	LF353N
Q1	2N5088
Q2	2N5088
D1-D6	1N4148
	
TREB	50kB
VOL	100kA
BASS	50kB
DRIVE	250kB

RC_PNP.png

RC_Layout.png

RC_Schematic.png

sadrew · Post by **sadrew** » 15 Apr 2009, 20:00

Are input and output buffers - same as in tube screamer - necessary? Do they affect the sound of the pedal?

quaternotetriplet · Post by **quaternotetriplet** » 15 Apr 2009, 23:25

thanks madbean.

rosetta · Post by **rosetta** » 26 May 2009, 06:20

hi.. this is my fist post here, i'm from chile and hope u understand (my english is not the best).

in the madbean's proyect the value of R11 is 4n7. and think there is no resistor with that value maybe a capasitor.

can anybody tell me which is the real value for R11???

thanks.

regards.

Ps. excuse my english

Post by **modman** » 26 May 2009, 09:10

rosetta wrote:hi.. this is my fist post here, i'm from chile and hope u understand (my english is not the best).
in the madbean's proyect the value of R11 is 4n7. and think there is no resistor with that value maybe a capasitor.
can anybody tell me which is the real value for R11???
thanks.

regards.

Ps. excuse my english

You should learn to check the schematic. Just building from layouts will get you in trouble. Yes 4n7 is a capacitor.

madbean · Post by **madbean** » 26 May 2009, 10:58

Wow, I forgot that I did this. Anyway, I never got around to building this one, but I'm attaching a proper document for the project...everything is in the pdf.

RC_BOOST.pdf

SPeter · Post by **SPeter** » 26 May 2009, 11:36

Thanks Dr Madbean!

box · Post by **box** » 26 May 2009, 12:00

rosetta wrote:hi.. this is my fist post here, i'm from chile and hope u understand (my english is not the best).

in the madbean's proyect the value of R11 is 4n7. and think there is no resistor with that value maybe a capasitor.

can anybody tell me which is the real value for R11???

thanks.

regards.

Ps. excuse my english

Hi,
R11 is 4k7 resistor.
Regards
box

rosetta · Post by **rosetta** » 27 May 2009, 07:33

modman wrote:
rosetta wrote:hi.. this is my fist post here, i'm from chile and hope u understand (my english is not the best).
in the madbean's proyect the value of R11 is 4n7. and think there is no resistor with that value maybe a capasitor.
can anybody tell me which is the real value for R11???
thanks.

regards.

Ps. excuse my english
You should learn to check the schematic. Just building from layouts will get you in trouble. Yes 4n7 is a capacitor.

yeah i know how to build from schematic but if you see the RC schematic you would notice that R11 has the symbol of resistor but the value of a capacitor, anyway thanks box for answer my question..

i have build this boost but it doesn't sound like the rc, i mean it soun but when the gain pot is in 0 the sound is not clean as the original one...
mm i don't know what happan i've try raplacing the opamp (062,072,082, 4558)but the gain is to high.
anyone have the same problem??

quaternotetriplet · Post by **quaternotetriplet** » 27 May 2009, 09:01

Hi guys, any suggestion on how convert it to bass rc?? Any rough guess??

thanks

Silent Fly · Post by **Silent Fly** » 27 May 2009, 15:31

quaternotetriplet wrote:Hi guys, any suggestion on how convert it to bass rc?? Any rough guess??

thanks

I think the difference is in the lower frequency of the treble control and the lower gain.

quaternotetriplet · Post by **quaternotetriplet** » 28 May 2009, 03:15

any idea how to lower the treble of this one?? which component do i have to change??

Silent Fly · Post by **Silent Fly** » 28 May 2009, 08:05

quaternotetriplet wrote:any idea how to lower the treble of this one?? which component do i have to change??

In the [download/file.php?id=2730&mode=view]Soulsonic's schematics[/url] increase C4 and C7. 6.8n or 10n should do the trick.

quaternotetriplet · Post by **quaternotetriplet** » 28 May 2009, 08:36

thanks.

rosetta · Post by **rosetta** » 28 May 2009, 20:27

ok.. im done with it.. sound is really good buti wnna give it a bit gain, is there any thing i could replace to get more gain?

Xotic - RC Booster [traced]