General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
jalmonsalmon
Solder Soldier
Information
Posts: 212 Joined: 14 Sep 2012, 22:49
Has thanked: 97 times
Been thanked: 30 times
Post
by jalmonsalmon » 24 Mar 2015, 00:00
jalmonsalmon wrote: I took a crack at this one with diptrace based off of the latest schematic,
Hopefully this is a working layout and thought I would share this PCB -
I am unable to order this project as of yet but will in the near future.
I am not that good at layouts but thought I would give back to this fantastic site! Fill free to point out any errors, I can take it!
https://oshpark.com/shared_projects/lNHrYYDM
I added the 47uF and diode for protection.
Here is an updated layout
https://oshpark.com/shared_projects/5YoHAwyH
I had the diode on the wrong net, but it is good now
johnk
Resistor Ronker
Information
Posts: 282 Joined: 05 Apr 2010, 07:33
Has thanked: 36 times
Been thanked: 293 times
Post
by johnk » 24 Mar 2015, 20:03
I first built mine with 2N5457's and it sounded great. I took them out and installed some 2N4393's once they arrived since that's what the original uses, but I really don't think that it sounds much different, if any.
johnk
Resistor Ronker
Information
Posts: 282 Joined: 05 Apr 2010, 07:33
Has thanked: 36 times
Been thanked: 293 times
Post
by johnk » 24 Mar 2015, 23:33
got mine all boxed up. thanks for posting the schematic!
I also installed a relayed true bypass in it.
Mbas974
Resistor Ronker
Information
Posts: 280 Joined: 29 Aug 2011, 12:13
Has thanked: 39 times
Been thanked: 40 times
Post
by Mbas974 » 26 Mar 2015, 21:01
@johnk very net job !!
O.T. Which technique did you use for the enclosures, labels and color look more than standard build (!!) ..?
roseblood11
Tube Twister
Information
Posts: 1887 Joined: 23 Aug 2008, 14:21
Has thanked: 366 times
Been thanked: 313 times
Post
by roseblood11 » 26 Mar 2015, 21:20
some professional printers can use white toner or ink, have a look at druckeronkel.de...
derringer
Information
Posts: 22 Joined: 27 Sep 2009, 13:07
Has thanked: 5 times
Been thanked: 11 times
Post
by derringer » 06 Apr 2015, 00:44
https://www.freestompboxes.org/download/ ... &mode=view
I built from Storyboardist's version on perf but it just does not sound right.
I've never used Mu-Amps before so i don't know what to expect voltage-wise. I'm guessing that Q4's drain and Q5's source should be the same as the Q2/Q3's are? Any help or readings from a working model would be greatly appreciated.
Thanks
battery 8.5V
Q1
C: 5.7
B: 1.9
E: 1.2
Q2
D: 5.8
S: 1.4
G: 0
Q3
D: 8.3
S: 5.8
G: 4
Q4
D: 3.6
S: 0.9
G: 0
Q5
D: 8.3
S: 4.7
G: 3.9
Q6
D: 8.3
S: 3.7
G: 4.7
derringer
Information
Posts: 22 Joined: 27 Sep 2009, 13:07
Has thanked: 5 times
Been thanked: 11 times
Post
by derringer » 06 Apr 2015, 22:35
'twas a bad gain pot. Sounds like Sabbath.
Consider Storyboardist's layout verified.
And I used 2n5457s with a 2n3903 with a gain of about 140.
juansolo
Information
Posts: 48 Joined: 02 Sep 2009, 17:02
Has thanked: 6 times
Been thanked: 106 times
Post
by juansolo » 20 Apr 2015, 19:09
FWIW built it and compared it to the original and it's nailed on, so the trace was good
Nice to know
R.Rechia
Information
Posts: 1 Joined: 05 Dec 2011, 22:32
my favorite amplifier: Marshall Plexi and Fender Blues Jr.
Location: Brazil
Post
by R.Rechia » 09 Jul 2015, 23:30
Awesome guys! Iommi tones blowing my mind! \m/
andregarcia57
Cap Cooler
Information
Posts: 572 Joined: 16 Nov 2008, 15:42
Has thanked: 73 times
Been thanked: 109 times
Post
by andregarcia57 » 20 May 2017, 00:09
I managed to find the transistors MPF4393, but my pedal is very high gain. How can I change to a little less gain?
66archer
Information
Posts: 3 Joined: 03 Aug 2017, 17:56
Post
by 66archer » 03 Aug 2017, 18:14
Can you post EasyEDA files please? Schematics and PCB.
Thanks in advance!
Gabriel
66archer
Information
Posts: 3 Joined: 03 Aug 2017, 17:56
Post
by 66archer » 15 Aug 2017, 16:14
Can anyone upload gerber files please? Thanks!