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Messages - PMowdes2

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Build Reports / Re: TurboFlange (Dead End FX Flange-A-Rama)
« on: July 29, 2019, 05:19:32 AM »

it's an 8v regulator, try TL750L08C

General Questions / Re: Most challenging pedal builds
« on: July 27, 2019, 06:25:43 AM »
Or start dabbing into synth builds....

If you are into modular then I'd recommend Pusherman

General Questions / Re: Most challenging pedal builds
« on: July 24, 2019, 03:17:44 PM »
Lovetone Ring Stinger (or String Ringer, for the DIY version.) The Flange With No Name is pretty gonzo, too.

The EMS Synthi Hi-Fli that Digi2t and co are doing is probably the biggest, though. That, and that other guitar synth one, I forget the name.

Edit -- the Ludwig Phase 2!

Dino may chirp in on this but I think our BiPhase build was harder than the Synthi.  There's a while bunch of calibration that needs doing that isn't required for the Hifli.  I guess the hardest part of the hifli is finding all the parts.  The Ludwig is a bitch as well.

General Questions / Re: meat sphere trouble
« on: June 28, 2019, 08:48:15 AM »
Hello! I am having some difficulty with the Meat Sphere,( taylors very sweeT pcb, i may ad)
Everything seems to work, but the two diffused green leds  are doing nothing at all. I tried the  VTL 5C3, but I thought they were faulty or just being difficult,as I read over on the other forum they were prone to be,hence opting for the 'Roll your own".
I did install and have  the TL 074 backwards the first time firing it up. I replaced it with a brand new one and also swapped out the LM1458, just to be extra sure. The Photocells  are small bear sku #9200s(CdS 5mm Light Resistance 10 Min,  50KMax,Min. Dark Resistance rated at 5megs.) and when I try different settings and sweep my hands oer them, they are  definitely doing what they are supposed to do. (I will put the leds/cds in a tube sheath/shrink-wrap after i get them greenies working) any input would be greatly appreciated!

I'm not totally familiar with this pcb but I have built a bunch of meatballs.

Does it pass a clean signal??

Does the pcb have a send and return loop, and if so have you wired it properly.

I remember that my builds were very sensitive to the ICs that I used, and also to the strength of the input signal, I found it worked best with a clean boost up front.

Lastly the settings are critical.  Attack always has to be set less than decay, and the trigger does not work when the band width toggle is set to off (as opposed to half or full)

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: June 04, 2019, 02:16:06 AM »
PCB sets are finally up on the store after a bit of a delay with the diode board fabrication

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: May 07, 2019, 05:49:05 AM »
Quote from: digi2t

link=topic=29282.msg286508#msg286508 date=1555598045
Diode boards are on their way.  :)

Thanks to Phil for his monk-like work.


got some diodes to test today! The ones on this board are SOD-323-2 or SOD-123-2? Both SOD-80 (mini Melf) and SOD-123 have manageable size for hand soldering even without a hot air station, just need some solder paste and the superficial tension of the melted tin pull the part to the correct place.


I'm not sure I understand what you are trying say.

I hand soldered these boards, it took a while but it is achievable.

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 29, 2019, 12:50:35 AM »

All parts of the LM13700's are used.  The original unit used 3080's

The only place we used a 3080 was where we had a stray single and I didn't want redundant pins by using a 13700.

The preamp is in the pedal on the original, we wanted to keep it as close to original spec as we could, also there isn't much spare room on either of the large pcbs so it made sense.

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 28, 2019, 03:01:29 PM »
Is that a PS/2 cable I see there??  ???

I dont know exactly what he used Greg, i think it's a 5-pin DIN though

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 28, 2019, 01:40:21 AM »

All boxed.

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 26, 2019, 12:29:20 PM »
I just peed a little  :o


Did you fellas decide to incorporate the LM13X00 series OTAs or did you just stick with the 3080s?

All LM13700 except one 3080

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 26, 2019, 08:00:53 AM »
Done and verified

Quick demo video on our Instagram page

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 23, 2019, 05:25:58 AM »
34 ICs...
240 SMD diodes...

Sounds fun!!!

I'm in!!

(Once the project is finalized and proven of course...)

Think we are nearly done Greg.  I soldered the diode boards by hand and posted them to Canada, just waiting for them to arrive.  Dino's got everything else built and the fuzz section and the LFO seem to check out.  We might have a small issue with the bypass switching which seems to be different between the original schematics and the unit we traced but i'm sure Dino can figure that out.  It's been a bitch but the end is in sight.

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 15, 2019, 07:36:40 AM »
Verification in progress

Build Reports / Re: Cosmonaut (Dead End FX Laika Fuzz)
« on: April 12, 2019, 01:51:21 PM »
No octave, from memory it only uses one side of the transformer and it's right at the input, I guess it helps set the input impedance

Open Discussion / Re: EMS synthi Hi-Fli repair
« on: April 10, 2019, 09:00:11 AM »

Now we wait for the slow boat from HK to deliver the boards :)

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