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    Chop Shop with MMBFJ201

    I think it's interference from my internet which runs through the power wires.
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    Chop Shop with MMBFJ201

    This thread has all the good info on that.
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    Treble bleed PCB

    Here is the 'Vtreb' which I find perfect for my needs. https://guitarelectronics.com/v-treb-variable-treble-bleed-circuit-for-guitar-bass/
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    Favorite Rat Mods?

    With the 2N5457 (don't have the -58 model) the drain current is 45uA-165uA, and with the J201 it falls to 15uA-130uA. So, not zero but close. I'll order the right JFET as I also need to order a Op07. I looked at using the TL071 (which I have) but noticed the different slew rate raises the peak...
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    Favorite Rat Mods?

    I've just modelled the Rat in LTSpice to learn about the circuit before I build it. I noticed that the distortion pot seems way too big as you are clipping the op amp before you get close to half travel even on a 100k log pot (~10k). So I think you are right. Of course the diodes then clip...
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    Dragons Breath aka Rangemistress

    Revisiting this pedal as I've made a lot of others since and it got bumped off my pedalboard pretty fast because a) it doesn't sound as good as my Ge rangemaster clone and b) it always sounds too bright no matter what I do with the Range control. Because it's a treble booster I guess... So this...
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    Cobalt Drive - Blues Driver w/ Waza Mod

    Gone - back to the folder from whence it came...
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    Cobalt Drive - Blues Driver w/ Waza Mod

    Ha yes my mousemanship lacks also...
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    Cobalt Drive - Blues Driver w/ Waza Mod

    The pedalpcb board for this one is tight - use 5mm resistors if you have them, else you'll be standing them on end. The JFETS require a mounting board as the pcb doesnt have a surface mount option. I had a batch of JFETS I'd graded for the Chop Shop build so was able to find two matched pairs...
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    This Week on the Breadboard: Blues Driver BD-2 & BD-2w - part 3

    Yes, especially the two across the + / - inputs to the op-amp. There shouldn't be any significant voltage difference between the inputs to an op-amp with feedback. Very odd.
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    This Week on the Breadboard: Blues Driver BD-2 & BD-2w - part 3

    Thanks. My bad. I intend to use the pedal for low to medium gain so I think this will work. In addition, I plan to leave out all the diodes except the power supply diode..
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    This Week on the Breadboard: Blues Driver BD-2 & BD-2w - part 3

    I think this is just what I was looking for as I want to build a -2w version. However, could you please confirm that there are no typos as the "2M &" entry for R2 seems to be missing something after the "&", also the R18 change from 1M to 10k seems large. Do you recall if the -2w mod got rid of...
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    SOLVED Any Amp Experts??? Mojotone 5F2A Issues...

    I haven't built an amp, but I read that one key step before putting tubes in is to check voltages at all the important points. You might need the rectifier tube in to do that. If all the tube sockets are getting correct voltages then the problem is probably on the signal path, and in your case...
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    Chop Shop with MMBFJ201

    I've noticed the pedal sometimes produces a faint hiss and occasionally a pop or two. I tested the connections and pots, and noticed that Sag is noisy. This is probably because it is a voltage divider, and might be the source of the noise. Would be interested to know if others hear that...
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    Chop Shop with MMBFJ201

    I think the low idss numbers might be due to the tester.using only 4v but I'm not sure about that.
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    Seabed Delay (clone of Deep Blue Delay)

    I haven't done a side by side yet, but like you I aim to have all my pedals be DIY, so I have a compressor and Muff sitting idle as well as the DM-2W...
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    Seabed Delay (clone of Deep Blue Delay)

    For this week's build I went with the Seabed delay as I was hoping it would replace my expensive DM-2W (the sale of which will buy enough components to build about 4 pedals). I'm not disappointed. I got the PT2399 from Tayda for $0.79 and it works great, so no problems there. Overall, the build...
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    Park and Ride (Half-Cocked Wah)

    Put together a Park and Ride yesterday. I ran out of imaginative names so just called it 'Wah' so friends can have some idea of what it is. One issue was that the TL074 is not a 16 pin IC, but a 14 pin, so I had no sockets for it and had to solder it direct. Another was that it requires a 4u7...
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    Catalinbread entering DIY market?

    Ah yes I see. I was wondering how they would be able to drop the whole lot in the case with side jacks, but there you go.
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    Catalinbread entering DIY market?

    Interesting that they managed to put the whole pedal on one pcb with no offboard wiring.
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