Finally got this boxed up and I love how “big” it sounds. I am extremely happy with it. I built it to spec with the BOM and it really delivers a great sound. The tone control is very responsive and the feedback almost goes into a full oscillation, and that’s a good thing.
I have had this etched for some time and decided to populate it this weekend.
Etch:
Populated:
Needed:
I am out of 1.2M
This is a layout I got from Espanhol over at Handmades. It’s a Proco Rat with a LPB-1. Looks like a fun pedal so I decided to toss it on the bench.
Etched:
Populated:
Needed:
I am out of 30p capacitors. On order.
Had this PCB populated and sitting around for 6 or 7 months it’s finally time to get this boxed up. This will replace my 1590BB version of the circuit. The PCB layout is from Scruffie from FSB/DIYSB forums.
This is a Catlinbread RAH work alike. I used a layout of the PCB by plesur at FSB Forum call the “Prince Albert”. This pedal was created to nail the Jimmy Page sound from the great 1970 Royal Albert Hall performance.
Specs:
BS170 Voltages
Q1 D= 5.8 G= 5.2 S= 3.7
Q2 D= 5.8 G= 5.2 S= 3.6
Q3 D= 5.8 G= 5.2 S= 3.7
Gains
Q1 VGS(ON) 2.298v
VGS(OFF) 1.580v
Q2 VGS(ON) 2.364v
VGS(OFF) 1.637v
Q3 VGS(ON) 2.305v
VGS(OFF) 1.584v
I have wanted a 1590B version of this ever since I did a clone of the original in a 1590BB enclosure. I love this pedal but hated the footprint. As I never use the boost foot switch I decided to use a toggle instead. I used the Madbean Lavache transfer and made my own PCB since his layout is fantastic with onboard pots. For the transistor I used a 2N5088 with a lower gain of 320 Hfe.
Voltages:
Q1
C 7.4v
B 0.8v
E 0.2v
My box-o-fail has grown and my box-o-notquitedone has doubled. I am going to spend the next 2 weeks working on troubleshooting my failed builds and seeing if they are recoverable. I have also started a inventory list of what is needed to finish the “Not quite done yet” pile. Most of the things needed are ICs and Pots and I, for some reason, always forget to order them. Projects that are needed to be finished up include:
I have a few other builds that I am not to happy with the sound of and I need to spend some time with them to see if I made a mistake or if they need some tweaking.
I got myself yet another Electro-Harmonix big muff variant PCB this week. User DutchMF from Madbean Forums has made a flexible Big Muff layout to achieve as many mods as possible on one board. Here are some notes from DuchMF.
I’ve been working with Eagle for quite a while now, but never made anything that I thought would be of any use to you guys…. Until now!! Taking JuanSolo’s Muff spreadsheet as my starting point, and with a lot of looking at the Mudbunny schematic and several online resources, I’ve designed a pcb that allows one to build all the Muff version from Juan’s spreadsheet without any off-board or added on components. You can build either a 3 or 4 knob version, with options for a 3-in-line or a triangle layout by setting a pair of jumpers.
Board came in last week and now I have to decide what to build on it. I am thinking a Supercollider or another pharaoh. Not to sure yet.
I wanted to make a Rat pedal for my bass and decided to add a blend knob for the dry signal. There are many options in the DIY scene for this but I went with JMK’s blend PCB. I etched and populated one to test with and I really like the results.
