Barber Electronics - Dirty Bomb [gut shots + schematic] [traced]
- culturejam
- Old Solderhand
Information
Knock yourself out. The schematic is good to go.Colca wrote:hello could someone do this pcb???
culturejam wrote:Knock yourself out. The schematic is good to go.=Colca wrote:hello could someone do this pcb???
if ok but since I am new to this the diy, I manage better with the pcb made by the eagle and not even make myself .. you can do it for me??
regards,
Hi all;
First, thanks for the great effort. You guys that do these traces are amazing.
Second, I'm a user of the info provided here with no electronics background. Have mercy.
I want to do a layout for this one for myself and since I am using Eagle I need to complete the schematic to include the additional power supply components that aren't in the schematic on Page 1. I studied the pictures and tried to fill in the gaps. The one thing I haven't run into before is the second bias network. It looks like that is just there to keep the layout neat and doesn't look wrong, I just haven't seen it before. I also included opamp "B" to keep Eagle happy.
Could the pros take a look at the power supply section and see if it looks right?
Thanks!
George
First, thanks for the great effort. You guys that do these traces are amazing.
Second, I'm a user of the info provided here with no electronics background. Have mercy.
I want to do a layout for this one for myself and since I am using Eagle I need to complete the schematic to include the additional power supply components that aren't in the schematic on Page 1. I studied the pictures and tried to fill in the gaps. The one thing I haven't run into before is the second bias network. It looks like that is just there to keep the layout neat and doesn't look wrong, I just haven't seen it before. I also included opamp "B" to keep Eagle happy.
Could the pros take a look at the power supply section and see if it looks right?
Thanks!
George
- Attachments
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- Dirty_Bomb.png (32.4 KiB) Viewed 3282 times
- culturejam
- Old Solderhand
Information
Always post it. The more eyes on it, the better.chi_boy wrote:I can post here or email. I don't know if the Mods or Culturejam would have a preference.
Hi all,
I've been looking at a lot of hi-gain distortion circuits lately (Riot/uproar, Severe, Crunch Box and now the Dirty Bomb). These four pedals seem to be following more or less the same recipe with different clipping configurations, filtering caps and tone stacks.
I'm a bit stumped, however, by R5 in the Dirty Bomb schematic. That's the 100K resistor that's going across log 2 and 3 of the GAIN pot.
Could anyone help me shed some light on what it does? Does it affect the circuit's gain? It seems to me that the way it is placed it wouldn't factor in the gain but just end up in series with the opamp's output and in parallel with the "leftover" portion of the GAIN resistor which isn't part of the feedback loop. Am I understanding it correctly?
While I am at it, it would also be great if someone could clarify the purpose of the R1 / C2 pair for me.. Why such low values? It looks as if its creating a lowpass (with C2) for frequencies below ~3387K Hz? (using the amz filter calculator with 47pf and 1K).
Thanks for any help!
dB
I've been looking at a lot of hi-gain distortion circuits lately (Riot/uproar, Severe, Crunch Box and now the Dirty Bomb). These four pedals seem to be following more or less the same recipe with different clipping configurations, filtering caps and tone stacks.
I'm a bit stumped, however, by R5 in the Dirty Bomb schematic. That's the 100K resistor that's going across log 2 and 3 of the GAIN pot.
Could anyone help me shed some light on what it does? Does it affect the circuit's gain? It seems to me that the way it is placed it wouldn't factor in the gain but just end up in series with the opamp's output and in parallel with the "leftover" portion of the GAIN resistor which isn't part of the feedback loop. Am I understanding it correctly?
While I am at it, it would also be great if someone could clarify the purpose of the R1 / C2 pair for me.. Why such low values? It looks as if its creating a lowpass (with C2) for frequencies below ~3387K Hz? (using the amz filter calculator with 47pf and 1K).
Thanks for any help!
dB
- rcustoms
- Resistor Ronker
Information
hey guys, I made my own version of the schema and pcb, and works very good,great sound, and all controls respond clearly, exect the switch. I do not find difference between the two posiciones. someone tried the circuit to verify this.if someone needs the eagle files send me a email at rzguitarshop@yahoo.com
- rcustoms
- Resistor Ronker
Information
ok guys ,i re-check the switch, and was bad, now the pedal is complete and sound super distortion.i dont know how ,put pictures here,but remember send me a email.
- hbo
- Breadboard Brother
Information
Someone asked me to do a vero layout for this effect. Thought I'd share it with all of you. Note that this is still not verified.
- rcustoms
- Resistor Ronker
Information
rcustoms wrote:la bomba
Thanks a lot!
- rasta_maleek
- Resistor Ronker
all look to be correct, but, why two divisors for the bias supply?chi_boy wrote:OK, as I said, this is unverified.
If anyone tries it, please post any findings.
r-customs use one for all the bias.
- rasta_maleek
- Resistor Ronker
a very lot of thanks r-custom for sharing.rcustoms wrote:la bomba
have you got it with ground mask?
it will be great
- rcustoms
- Resistor Ronker
Information
hi mr rasta_maleek ,i use only one divisor for bias supply and my pedal work amazing .here's what you need
regards
regards
- rasta_maleek
- Resistor Ronker
thank you so much R-custom.rcustoms wrote:hi mr rasta_maleek ,i use only one divisor for bias supply and my pedal work amazing .here's what you need
regards
In a few days it will be made.
cheers