Post-Lockdown pedal building

Alex2678

roberty said:

That's really cool @Alex2678 which position did you put the Ge stage in? How have you mounted the turret board? I've not used turret board before but I'd like to give it a go

Thanks mate, ge q1 si q2. Just a 3m adhesive foam pad, though I have used standoffs sometimes 

roberty

stickyfiddle said:

That sounds like huge fun  

It's hugely satisfying. I'm proud of it, even if it is two existing circuits hacked together *cough* JHS *cough cough*

roberty

Alex2678 said:

roberty said:

That's really cool @Alex2678 which position did you put the Ge stage in? How have you mounted the turret board? I've not used turret board before but I'd like to give it a go

Thanks mate, ge q1 si q2. Just a 3m adhesive foam pad, though I have used standoffs sometimes 

Proper building that is. Bet it sounds lovely

Alex2678

Building for cavemen. 

It doesn’t clean up as well as some I’ve done but it does roll back to a lovely light drive 

roberty

Alex2678 said:

Building for cavemen. 

I don't reckon lol. PCBs are for pussies. PCBs and stage monitors

roberty

Boxed up this Grand Orbiter clone. Quite an old graphic now, I've since discovered that it's possible to measure things



Forgot to picture the guts but it's tidy lol. Getting better at top jacks 

It completes a set

Alex2678

I’m yet to try this ‘measuring’. Maybe some day 

roberty

If works but I faffed up the header spacing on the breadboard power IO

roberty

I made this box to sit at the edge of my desk for testing and troubleshooting



The input is on the front and there's an output on the back to connect to the amp

From L-R on top there's an RCA socket to attach an audio probe, a toggle to switch between probe and jack input, a passive volume control with push/pull bypass/engage, a mute toggle, and a momentary mute button



The big yellow cap is a 1uf to block DC on the probe

Got sick of hearing buzzing shit all the time when probing audio so this should make the troubleshooting experience less grim. Also means I can just leave the amp on and not bother getting up

Need to make the probes now, one of these should do it https://www.switchelectronics.co.uk/products/black-3m-male-to-male-plug-rca-phono-cable-lead

I've got a some chunky sewing needles so the plan is to cut the leads in half, solder a needle to a bare end and then seal it up with heat shrink

roberty

It's all grounded through the enclosure but it feels sketchy somehow. Looking at it now the push/pull case would have been a much better anchor point lol. There's 5 whole wires shoved in that jack lug

Alex2678

Think fuzzdog have just done a tone generator kit for troubleshooting @roberty if you need one. Looks like a handy bit of kit

Alex2678

I’m embarking on a foolish tagboard ce2 build. I foresee troubleshooting on my future 

Alex2678

Toying with some 3d printed labelling

It’s a Zonk on a BG Harding board. I had previously built an all silicon version on this board but it sounded very boring so I’ve redone it as an all germanium version after I took some bits from an old radio that fell into the right gain/leakage brackets. Two oc81s and an oc72

LukeFRC

I made 4 more of the mini prunes and custards - Gorva M45 which is close to 1590a - but Top jacks!
one is mine to keep, the other three are for selling on bass forum - the first batch all flew out less interest in these so far.

and yes I did plug all 4 in at the same time!! 

Another project … 

LukeFRC

It’s the clone of a EUNA buffer with a clone of a broughton HPF/LPF added - only the bass boost switch on the Euna and an input impedance switch.

works ok, not decided if needed 

LukeFRC

Runs at +- 17.5v which is nice 

camelfish

This one’s a rarity (apart from the WindMiller). Based on the overhyped Grampian Reverb 636.

The pedal consists of the AUX input, buffer/splitter and the output amp of the original unit.

I made some design mods to make it more pedal friendly:

1/ Changes to the input and output caps

2/ Changed to negative ground from pos ground using OC140 NPN Ge transistors

3/ Modules re-biased to all run off 9V .

4/ Duel drive pots to switch between different gain levels

5/ Low cut to remove some of the bass

Does it sound like Townsend’s reverb preamp? Hard to say from the original footage.

camelfish

menamestom

I have some PCB’s if anybody wants them.  GrindcustomFX I never got around to building.

Feng Drive
The Goat
Profundis

Also 2 opto isolation daughter boards.

You would have to find or work out the schematics.

Either way free to a good home.  Let me know and I’ll post them out.

roberty

LukeFRC said:

Runs at +- 17.5v which is nice 

They look great man. The power supply is really neat. Makes more sense to go to +/-17v than +30v

Aion put a 30v pump on their TC Preamp clone, it's cool but there's so many diodes, and you still have to bias the signal afterwards:

camelfish said:

This is awesome mate. I've used one of those OC140s in a fuzz it sounded so good. Do you have a link to the schem/layout? How are you finding it?