Xotic - BB Preamp [traced]
- analogguru
- Old Solderhand
Information
(admin edit: merged from another thread)
This schem is not AC nor RC but BB Preamp I think.......
- tuemmueh
- Solder Soldier
+1pakalolo wrote:This schem is not AC nor RC but BB Preamp I think.......
But if I remember correctly (like I said, no need for TS here, I love my 30$-Rat ...), the only difference between BB/AC/RC is the number of diodes.
call1800ksmyazz.......thank you very much for the schematic. I've been searching for this for a long time..... .....
....Its working properly..and i did'nt remove the tone control of TS : ....
and I add the clipping diode...(tuemmueh...thanks for the tips!!!! ) ..
and now i will call this pedal "LANDXOTIC".......(you want a gut shot!!! )
Again thank you very much....KERRY and TUEMMUEH !!!!!!more schematic to come...and THANKS "FREESTOMPBOXES"
....Its working properly..and i did'nt remove the tone control of TS : ....
and I add the clipping diode...(tuemmueh...thanks for the tips!!!! ) ..
and now i will call this pedal "LANDXOTIC".......(you want a gut shot!!! )
Again thank you very much....KERRY and TUEMMUEH !!!!!!more schematic to come...and THANKS "FREESTOMPBOXES"
- call1800ksmyazz
- Breadboard Brother
Thanks, and no problem panday44. Glad you are enjoying!
- analogguru
- Old Solderhand
Information
Some month´s ago I saved some pictures but couldn´t really say what they are. So I stored them under "Fulltone". After reading this thread:
https://www.freestompboxes.org/viewtopic.php?t=137
and this thread:
https://www.freestompboxes.org/viewtopic.php?t=134
I rechecked the pictures and compared them to the pictures in the link above, and it seems that the picture are the guts of the:
Xotic BB preamp (gooped)
Xotic BB preamp (un-gooped)
this appears to be the corresponding BB Preamp schematic
viewtopic.php?f=7&t=11&p=50413#p50413
analogguru
https://www.freestompboxes.org/viewtopic.php?t=137
and this thread:
https://www.freestompboxes.org/viewtopic.php?t=134
I rechecked the pictures and compared them to the pictures in the link above, and it seems that the picture are the guts of the:
Xotic BB preamp (gooped)
Xotic BB preamp (un-gooped)
this appears to be the corresponding BB Preamp schematic
viewtopic.php?f=7&t=11&p=50413#p50413
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
- call1800ksmyazz
- Breadboard Brother
Why didnt you just change the name of my thread and add your info there?
- analogguru
- Old Solderhand
Information
Maybe somebody wants to place a RC/AC Boost schematic in the future or some guts ?
analogguru
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
I have those ones(gooped/un-gooped) saved here as the VOODOLABS SPARKLE DRIVE...Some month´s ago I saved some pictures but couldn´t really say what they are. So I stored them under "Fulltone". After reading this thread:
http://www.phpbbserver.com/freestompbox ... stompboxes
and this thread:
http://www.phpbbserver.com/freestompbox ... stompboxes
I rechecked the pictures and compared them to the pictures in the link above, and it seems that the picture are the guts of the:
Xotic BB preamp (gooped)
Xotic BB preamp (un-gooped)
this appears to be the corresponding:
Xotic BB Preamp schematic
analogguru
- analogguru
- Old Solderhand
Information
If you look at the:
blown up Xotic BB-Preamp guts
you can recognize the same track-routing, the cables to the switch in the middle bottom, cables to the pots on the upper side, the 2 electrolytics at the left, the placement of the IC´s.....
analogguru
blown up Xotic BB-Preamp guts
you can recognize the same track-routing, the cables to the switch in the middle bottom, cables to the pots on the upper side, the 2 electrolytics at the left, the placement of the IC´s.....
analogguru
There´s a sucker born every minute - and too many of them end up in the bootweak pedal biz.
You can get nearly the same sound and overtones out of any TS if you you drop the voltage to app. 8V.
To me the BB sounds to compressed, even more than a TS or SD.
The schem was drawn by Kusi, who altered it a bit (he dropped an IC stage, and altered the gain control to a single pot).
JHS
To me the BB sounds to compressed, even more than a TS or SD.
The schem was drawn by Kusi, who altered it a bit (he dropped an IC stage, and altered the gain control to a single pot).
JHS
- Goop_buster
- Solder Soldier
JHS wrote:You can get nearly the same sound and overtones out of any TS if you you drop the voltage to app. 8V.
To me the BB sounds to compressed, even more than a TS or SD.
The schem was drawn by k**i, who altered it a bit (he dropped an IC stage, and altered the gain control to a single pot).
JHS
Is there a PCB layout for this also?
Did the schematic author also (k***) change some values in the (baxandall) tone stack?
- Goop_buster
- Solder Soldier
Thanksgrolschie wrote:Goop really annoys me.
To annoy you some more. With the given tone stack values there are plenty of boost and cut (ca 20 dB for bass and may be less...16 dB on treble) but the action (as I recognize it...however I may be wrong) are choosen for both very low frequencys and very high. In other words,the EQ looks almost taken from a circuit for hi-fi rather than something optimal for guitar. It just made me wonder if the values were the same as in the original. But I have not tried a real BB and it may work very nice IRL. Perhaps the BB is intended for Bass guitar also?
- Goop_buster
- Solder Soldier
Thanks JHSJHS wrote:The values of the tonestack had not been changed.
JHS
- greenskull
- Resistor Ronker
I've been trying like hell to figure out what I could contribute here and remembered this from DIYstompboxes:
https://www.diystompboxes.com/smfforum/ ... ic=55014.0
Here's the schematic:
LA Boutique Screamer JPG schematic
I created an image file from the original pdf. Hope it works out!!
https://www.diystompboxes.com/smfforum/ ... ic=55014.0
Here's the schematic:
LA Boutique Screamer JPG schematic
I created an image file from the original pdf. Hope it works out!!
- call1800ksmyazz
- Breadboard Brother
haha we already have this posted in 2 other places on the forum. Its for the BB Preamp.
- briggs
- Tube Twister