in short, can i replace the LM324 and your 2 x TL072 with a TL074??riesling wrote:1. I have at least 20 TL072Dr. Nöres wrote:Why did you replace the LM324 by two TL072?
2. I don't like Quad OP-Amps (just a personal thing)
But feel free to change the layout to your needs
Mad Professor - Snow White Auto Wah [traced]
- jmwreck
- Breadboard Brother
- roseblood11
- Tube Twister
Is it possible to add a switch that reverses the filter sweep?
That´s an interesting mod for the MXR Envelope Filter (see tonepad.com), but I think it would sound much better with the SWAW, because the overall sound is better.
That´s an interesting mod for the MXR Envelope Filter (see tonepad.com), but I think it would sound much better with the SWAW, because the overall sound is better.
- jmwreck
- Breadboard Brother
hello to everyone, i have redrawn the schematics based on the one posted here, and i have matched it with dimebug's layout. i have found out that the LM324 pinouts in the schematics was arranged in a different way with regards to the layout. I have been thankful for both the scheme and layout. Im just concern of the pins of LM324 specifically the COMMON pins.
correct me if im wrong with this
correct me if im wrong with this
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- Posts: 10
- Joined: 09 Oct 2010, 19:18
- my favorite amplifier: U-Sound
- Completed builds: U-Sound Pedals:
more then 20 pedals made and more then 100 mods... - Location: Russian Federation
- Contact:
The thread may already outdated, but I want to ask colleagues to do this pedal - attached diagram is correct, if not, please indicate my mistakes.
Thanks in advance.
Thanks in advance.
- Attachments
-
- snowwhite.pdf
- (21.19 KiB) Downloaded 1082 times
- Ice-9
- Degoop Doctor
Information
vorokha wrote:The thread may already outdated, but I want to ask colleagues to do this pedal - attached diagram is correct, if not, please indicate my mistakes.
Thanks in advance.
A quick look over and everything looks fine.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !
No silicon heaven ? preposterous ! Where would all the calculators go ?
No silicon heaven ? preposterous ! Where would all the calculators go ?
- devastator
- Cap Cooler
about the lm13700, are they fragile ?
I soldered some wire (for the pots) and the enveloppe doesn't work any more (but the sound still there)
I soldered some wire (for the pots) and the enveloppe doesn't work any more (but the sound still there)
- mictester
- Old Solderhand
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You need the "Eagle" software. It's free from Cadsoft.uncleboko wrote:Vista will not open .sch files, what is the workaround please?
"Why is it humming?" "Because it doesn't know the words!"
Information
- Posts: 10
- Joined: 09 Oct 2010, 19:18
- my favorite amplifier: U-Sound
- Completed builds: U-Sound Pedals:
more then 20 pedals made and more then 100 mods... - Location: Russian Federation
- Contact:
Maybe you're not power off when soldering?devastator wrote:about the lm13700, are they fragile ?
I soldered some wire (for the pots) and the enveloppe doesn't work any more (but the sound still there)
I did a lot of their Phasers on these chips, their scheme in 4 pieces, I was not the case that they were burned.
- devastator
- Cap Cooler
yes, no power going into. But the chip stay in place when I put the wire.
I can hear the decay and sensitivity control act on sound, but any sweep or "quack" is presents. The signal goes into the filter whitout being changed (like a fixed wah ) .
I can hear the decay and sensitivity control act on sound, but any sweep or "quack" is presents. The signal goes into the filter whitout being changed (like a fixed wah ) .
- ckyvick
- Resistor Ronker
Are you sure its not how you have it set? because it does a fixed wah too. if not it sounds like your wiringdevastator wrote:The signal goes into the filter whitout being changed (like a fixed wah ) .
- devastator
- Cap Cooler
Hi,
i'm from japan and sorry for my poor English
I made one using NJM13600 because LM13700 or NJM13700 is hard to get in japan (or it's so expensive)
and the results were discouraging. So I ordered LM13700 from overseas with expensive shipping charge,
So I'll report soon.
Anyway , thanks for great project !
i'm from japan and sorry for my poor English
I made one using NJM13600 because LM13700 or NJM13700 is hard to get in japan (or it's so expensive)
and the results were discouraging. So I ordered LM13700 from overseas with expensive shipping charge,
So I'll report soon.
Anyway , thanks for great project !
- Ice-9
- Degoop Doctor
Information
To be Honest the NJM13600 should just drop in place of the 13700. You should get very similar results if not the exact. What exactly is the problem you have with the effect ?waaap wrote:Hi,
i'm from japan and sorry for my poor English
I made one using NJM13600 because LM13700 or NJM13700 is hard to get in japan (or it's so expensive)
and the results were discouraging. So I ordered LM13700 from overseas with expensive shipping charge,
So I'll report soon.
Anyway , thanks for great project !
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !
No silicon heaven ? preposterous ! Where would all the calculators go ?
No silicon heaven ? preposterous ! Where would all the calculators go ?