Ludwig Phase II Clone Debugging and Miscellany

[UKToecutter]

All,

It's New Years Eve and I'm off out for the evening.

Just wanted to wish you all a Happy New Year.

All the best

Andy

[digi2t]

Lookin' sweet Andy.

It's a shame, I just have too many projects going right now, so I have to put this one in the cue. I'll probably get to it around February, or March.

Got the Foxx Guitar Synth (now dubbed the Mutroxx), followed but a Meat Sphere, and then a Dipthonizer. Although the Dipthonizer might get knocked out of place, there was a recall on the PCB's from Madbean  .

But most of all, I want to breadboard the WEM Project V fuzz. I've never tried an 8 transistor fuzz  , and this one looks just mental. Real exotic.

A very Happy New Years to one and all. Please, don't drink and drive, arrive alive  .

[theehman]

Just a minor edit but the power supply described on page 15 is actually 0.125A, not 01.25A.

I have nothing to do at work today so I'm working on the BOM spreadsheet in Google Docs.

[R.G.]

Thanks. Correction is in source, will be in next release of manual.

[theehman]

FWIW, here's a link to order all the parts you need from Mouser.  It has everything except the recommended 1590D chassis, LEDs (since color is a personal choice) and footswitches.  I included Neutrik open frame jacks (4 mono and 1 stereo), plus a DC jack to match the recommended power supply.  RG recommends changing the plug on the power supply to keep it from being used with other size-compatible devices so if you want to do that, you'll need to add your choice of connector and jack to the list.

http://www.mouser.com:80/ProjectManager/ProjectDetail.aspx?AccessID=9e9fb9c47d

Please inform me of any errors so I can update it.

[wavley]

FWIW, here's a link to order all the parts you need from Mouser.  It has everything except the recommended 1590D chassis, LEDs (since color is a personal choice) and footswitches.  I included Neutrik open frame jacks (4 mono and 1 stereo), plus a DC jack to match the recommended power supply.  RG recommends changing the plug on the power supply to keep it from being used with other size-compatible devices so if you want to that, you'll need to add your choice of connector and jack to the list.

http://www.mouser.com:80/ProjectManager/ProjectDetail.aspx?AccessID=9e9fb9c47d

Please inform me of any errors so I can update it.

I love you Ron, you just made my life a little easier 

[Keppy]

Got my 1590D from Mouser.

http://www.mouser.com/ProductDetail/Hammond-Manufacturing/1590DGY/?qs=sGAEpiMZZMsrGrAVj6eTvXxo3S2oazAEitGll9YM6Xc%3d

[Seven64]

am i really gonna have to go find different 4004's?  should i just drill out the holes?

[theehman]

am i really gonna have to go find different 4004's?  should i just drill out the holes?

Just drill them out. 

[Seven64]

ok, so i forgot to order the 2.2uf electrolytic caps.  i have some here, but they are only 25v, not the 50v ones the list calls for.  i see that the 10uf's are only 25v tho, so is it ok to use the 25v 2.2uf caps?

[R.G.]

Which part number caps, in particular?

Some caps are OK at lower voltages, some are not. This circuit runs from 35V +/- normally, so 35V parts are marginal. Hence the use of the next standard voltage up, 50V. However, some parts run at lower voltages internally and you might get away with 25V. Gotta look at each on.

I'm working the booth at NAMM this week, so my ability to get back with moment by moment tech answers will be impaired.

[Seven64]

all of the 2.2's.  c1, cf14, cf23, cf32, cf22

[R.G.]

C1 - Probably lives, but maybe for a short time; not good for it. It will sit at nearly 35V, but current limited through a 1M resistor.
CF14, CF23 - they'll be fine with 25V; I originally spec'd them at 25V, but changed to 50V for consistency.
CF22, CF32 - I'm away from my sim tools and test equipment. Put them in and measure DC across them. If it's under 25 in operation, it'll be fine. I'm guessing they will, but do measure.

For C1, if you're desperate not to order caps, use four 2.2's, in series/parallel. Or put this in while you're waiting for your order of the right part.

[Seven64]

ill just head down to the store and pick some up this week.  i still need some various resistors as well.

what booth are you at?  sorry that i don't know.  i am sure i have read who you work for on this forum before, but i'm just curious. 

[R.G.]

I work for Visual Sound. We're in 5825. We have a couple of new toys to look at if you want to come by.

[theehman]

What are the jacks on the back labeled as?  I know there's Input, Output, Expression.  What are the other 2?

[R.G.]

There's a high Z and low Z input. Seems like there was a second output, perhaps dry or "stereo". I'm working out of my laptop and don't have my full set of design info with me.

[theehman]

Ok.  Looked through the material again and found them.

High-Z In
Low-Z In
Main Out
Stereo Out
EXP IN

Thanks for the quick reply, RG!

[pinkjimiphoton]

stereo only works when the stereo switch is on....then it outputs the dry input.

remember, for extra mojo, on this thing, it lights up weird...you're in bypass when the effect switch is lit.

the other switches all are normal...when engaged, the corresponding light lites up.

lookng forward to starting the build soon...be nice to add a pII to my pedalboard rather than endangering the original.

[Seven64]

hoping i oriented the bd677 correctly.  about to try and drill out my enclosure.... wish me luck!!