Snarling dogs - Mold spore

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Snarling dogs - Mold spore

Postby devastator » 23 Apr 2011, 20:49

I just received this crazy heavy beast , it's pretty rare apparantly . It's a standart snarling dogs wah combined with a ring modulator based on a LM565 , the same presented in the Anderton's book (the electronic projects for musicians). (The big metal cylinder is the inductor ) I took some pics of the guts :

(I also put a schematic from Jc mailet's site for the ring mod part)
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atreidesheir (04 Jul 2011, 19:07), Bside2234 (27 Apr 2011, 16:16), cutoutwitch (23 Apr 2011, 23:55), modman (27 Apr 2011, 11:18), pillof (27 Apr 2011, 02:20), rcustoms (20 Oct 2014, 16:04), ShortScaleMike (30 Jun 2011, 08:31), sinner (19 Oct 2014, 10:46), Sling847 (10 Mar 2012, 03:53)
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Re: Snarling dogs - Mold spore

Postby cutoutwitch » 24 Apr 2011, 00:00

Big thanks for this one! I've been wondering what's going on with this pedal for a long time! :applause:

There's a little something else going on there. What is the optocoupler for? I don't see it in the standard snarling dogs wah (although I've only quickly glanced at the guts of one), or the balanced modulator. Can you get shots of the trace side of the board?
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Re: Snarling dogs - Mold spore

Postby devastator » 24 Apr 2011, 00:26

cutoutwitch wrote:Big thanks for this one! I've been wondering what's going on with this pedal for a long time! :applause:

There's a little something else going on there. What is the optocoupler for? I don't see it in the standard snarling dogs wah (although I've only quickly glanced at the guts of one), or the balanced modulator. Can you get shots of the trace side of the board?


you're welcome , :D . I thinks this pedal deserves more attention (the others from SD too by the way)

I don't know what's the role of the optocoupler but it must be used on the ring mod part . There's also a charge pump , certainly for the LM565 which works on symetric power supply. A Lm324N for the buffering and mixing stuff I guess and two BC108/109 for the wah circuit.

For the trace side , I'll do that . I've to change the "freack switch" so I'll take pics in the same time. I prefer removing the circuit once instead of risquying a broken wire (it's pretty messy inside). But I think there's nothing magical in here. Just their regular wah desing combined with the Anderton ring mod . The cool thing is you can control the wah sweep and the ring mod frequency sweep in the same time when the two effects are On.

(I must say , it's my second Snarling dogs wah and it sounds really great , fat and deep and not harsh at all like a cryaby can be !! )

A video on youtube : http://www.youtube.com/watch?v=OCMo-ynO ... ture=feedf (around 2.47min especially )
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Re: Snarling dogs - Mold spore

Postby prehistoric » 24 Apr 2011, 15:07

hey, that is me in that video! funny, a guitar pedal seller ( store ) on ebay sold a mold spore for 200 a few weeks ago, they posted my video right in their auction.
i don't mind , it is more exposure for me.

they have not been made for at least 5 years, possibly longer. they were all made in china, but tweaked in new jersey since a percentage of them were shipped over not functioning. it is a really nice design, even though it borrows its circuit bits from previous designs. to me, brilliance in guitar pedlas lies in implementation as much as anything. a player simply can't get these particular sounds easily any other way (straddle your foot across 2 peds- wah and a third hand or hot foot activating a ring mod i suppose). kenny told me to tell you all if one of these is having a problem, the first thing to check is replacing the 1044 is usually the fix for the non-functioning ring mod. is that another name for the LM565?

anyway, i love mine. the wah sounds very good as a wah also.
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Re: Snarling dogs - Mold spore

Postby prehistoric » 24 Apr 2011, 15:13

i forgot, 1044 is the charge pump. kenny says these were problematic in these units.
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Re: Snarling dogs - Mold spore

Postby KindaFuzzy » 24 Apr 2011, 15:15

I remember when all these wahs came out back when I was in high school and I really wanted one, but they were way out of my price range. Thanks for this.
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Re: Snarling dogs - Mold spore

Postby prehistoric » 24 Apr 2011, 15:35

the optocoupler resistor is connected to pins 6-7 on the ring mod chip, in series ( ahead of) with the 10k pot at output in anderton's schem.

the led side of the opto is connected to a clean signal off of the side chain clean for the blend.
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Re: Snarling dogs - Mold spore

Postby pillof » 27 Apr 2011, 02:24

I've been waiting for them to reissue this thing forever.

Thanks for posting the info here!
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Re: Snarling dogs - Mold spore

Postby ShortScaleMike » 28 Jun 2011, 11:25

I have a friend with one of these who'd like me to take a look at it - it's not working but he's still getting status LEDs lighting up - he's worried he's killed it either with a voltage spike or using it in a feedback loop (?).

Do you think you could post working IC voltages so I can compare? I was going to get some from him since I'm hoping the MAX1044 has died and can be simply replaced with something more rigid like an ICL7660S and a Zener protection diode if none exists currently...

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Re: Snarling dogs - Mold spore

Postby prehistoric » 04 Jul 2011, 18:38

kenny told me to tell anyone working on these that the max 1044 is often the problem; check that first. we did not discuss alternative chips.
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Re: Snarling dogs - Mold spore

Postby atreidesheir » 04 Jul 2011, 19:17

I remember this pedal got a lot of love from Guitar Player about 12 years ago. It received the pick of destiny I believe. I have never seen one functioning before. The Snarling Dogs wahs are very often paperweights.

I did buy a Whine-O wah from American Musical Supply around that time. @$130(too much). It sounded great. It looked funny. Traded it for an Airliner tube amp.

They had great push. Very hot signal coming out. I imagine that would be great from a ringer.
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Re: Snarling dogs - Mold spore

Postby atreidesheir » 04 Jul 2011, 19:37

Forum member ChrisFFTA has a schem from Snarling Dogs.

Analogguru had one also.
http://www.freestompboxes.org/viewtopic.php?f=1&t=8621
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Re: Snarling dogs - Mold spore

Postby ShortScaleMike » 04 Jul 2011, 21:39

The Wah is functioning OK so I guess I just need to debug the Ring Mod if it comes to it. I'm hoping teh voltages out of the charge pump look wrong when compared and I can just replace that and be done with it...

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Re: Snarling dogs - Mold spore

Postby soggybag » 19 Oct 2014, 02:52

I know this is an old thread but, I thought I would add this just for the record.

I have a mold spore wah and I just blew up a third MAX1044. Every time it has broken it's been the MAX1044. Not sure what did it the first time. The last two times I was using a One Spot power supply. Yesterday I had just replaced the MAX1044. The Ring mod starts working again, I play with it for a few minutes, everything is working. Then I plug another pedal into the chain and connect it to the One Spot, and the Ring Mod on the Mold Spore is dead again.

Checking with meter the MAX1044 shows about 3.5v at pin 5, which should be -9v. It was like this just before I replaced the chip. It had been working for a long time before I bought the One Spot.

I'm not sure but, I think the One Spot is the culprit. Not that it's doing anything wrong, I think the mold spore is sensitive. It's either that the One Spot puts out a little too high a voltage, or something with the daisy chain, all of the plugs are out in the open and the positive is in the barrel they could short on something and zap the mold spore.

I'm going to order some LT1054 and 7660 to test. Are these pin compatible with the MAX1044?

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Re: Snarling dogs - Mold spore

Postby digi2t » 19 Oct 2014, 03:54

I've uploaded the Mold Spore schematic here a while back;

http://www.aronnelson.com/gallery/main.php/v/digi2t/Information/Mold+Spore+Wah/Mold+Spore_schem_smaller.jpg.html?g2_imageViewsIndex=1

It also includes a mod for increased "Straight" output. It helps improve the overall sound of the pedal. Just replace the 22K resistor with a 100K trimmer, and dial it in to where the amount of max clean signal/ringmod mix is desired when manipulating the "Straight" control. IMHO, this control is close to useless in stock form, with too much ringmod rendering it almost unmusical.

Historically, the biggest weakness is the MAX1044 chip, which will easily blow at any voltage approaching 10v. Personally, I've never had a problem with mine. I use a Morley 9v adapter, which I've dedicated to this pedal. It puts out 9.15v, and not a penny more.
No matter how many times I cut it, it`s STILL too short!

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Re: Snarling dogs - Mold spore

Postby probodger » 19 Oct 2014, 15:51

I repaired mine with a 7660 (mine is the one Mike was referring too above - I'm also pretty sure I posted about the repair here) and it's been fine ever since.
I socket-ed it though, just in case.

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Re: Snarling dogs - Mold spore

Postby ilcaccillo » 15 Dec 2016, 01:38

Hi,
thanks everyone for the tips.

I was able to repair the ring modulator circuit on my mold spore today, by following your advise and replacing the Max 1044.

The pedal has still one problem that I can't figure out how to solve.

With just the Wha circuit engaged theres an ugly distortion when the rocker pedal is fully turned up (bass part of the sweep), this happens in either of the 3 wha settings , and independent on the wha volume pot position.

I will make some sound samples so it's easier to show the problem.
The distortion only appears in the bass part of the sweep and it's like an ugly gated fuzz.

The wha circuit in this pedal is the same as the "Whine-O Wha"

Did anyone have this problem with the mold spore or with any other snarling dogs wha?
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Re: Snarling dogs - Mold spore

Postby Mold.spore22 » 26 Jul 2019, 01:42

Hi everyone, I know this is an old post but I hope someone here can help. Same old story here folks. I have the mold spore wah, ring mod side is non functional. It is most likely the Max 1044 chip. Now... how do I replace this chip? Does it require any soldering? Does the chip just pop out and a new one can be placed in? Also interested in the mod for better straight controk listed above. I have very basic soldering skills and would not be able to mod this pedal. Would anyone be able to help me get her up and running? Any help is appreciated!
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Re: Snarling dogs - Mold spore

Postby digi2t » 19 Aug 2019, 01:12

Mold.spore22 wrote:Hi everyone, I know this is an old post but I hope someone here can help. Same old story here folks. I have the mold spore wah, ring mod side is non functional. It is most likely the Max 1044 chip. Now... how do I replace this chip? Does it require any soldering? Does the chip just pop out and a new one can be placed in? Also interested in the mod for better straight controk listed above. I have very basic soldering skills and would not be able to mod this pedal. Would anyone be able to help me get her up and running? Any help is appreciated!


Where are you located?
No matter how many times I cut it, it`s STILL too short!
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