Tuesday, 28 May 2013

Ibanez CM5 Classic Metal

Got the original yesterday and it didn't disappoint. Soundwise. The box is what you'd expect and the stompswitch is out of order, so no surprise there. Ibanez's old cheapo high gain distortion that is articulate and powerful without being mushy or too noisy. Well worth a second look.

This layout omits the in/out buffers and the transistors pinout is made to match your common transistors. Original has 2SC1815s in it, so you could use those too. Just mind the pinout. I would strongly suggest that you try on different transistors and different diodes for the clipping pair. Although this is really nice sounding circuit, i see no harm in modding it slightly to suit your preferences and/or needs.



13 comments:

  1. nice to meet you mirosol!
    can i ask something?
    i plan about facebook page for DIY pedals
    so this is my question. can i post layout pictures depend on your blog?
    i`ll always tag or write your blog address. if it have no problem, please allow to post on Facebook!

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    1. The layouts i draw always have the url on them, so if you're not altering the images - go ahead.
      +m

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  2. Its funny, I have one of these pedals. I've seen Soundtanks thrown at drunks, bounced off walls, and run over by a van without breaking the case. I even saw beer spilled on to one, and when it dried out, it still worked. Yet everyone has something to say about the case. Now the switch.. a different story. Look at it harshly and it stops working. I have to step on mine 3 or 4 times to bypass it sometimes. Thanks for the layout, now I can build one with a switch that works!

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    1. I'm not even sure if the box is bad at all. This particular circuit is very good example of the design behind the soundtanks. I'm trying to collect them all. :) (here's my list of missing ones - http://muusikoiden.net/tori/nayta.php?id=760997 - i anyone wants to sell me any of those, let me know!)

      I was wondering if tayda had a suitable tact switch to replace the original..
      +m

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    2. I'd love to help out, I just can't read which list is the one you need. As far as the switches, I've seen them on eBay a few months back.

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    3. Ah, nevermind.. Foxlingo is my friend!!

      I've got a TL5. I'd just need a decent tremolo to replace it with...

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    4. Cool! Friend me on facebook and we'll discuss it more - https://www.facebook.com/mirosol

      By the way, the drop in replacement switch is Alps SPPB512300. One can get those in range of $0.30 - 0.90 from mouser, smallbear and various other sources. So no need to pay $5 for one on evilbay.
      +m

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    5. One more time thanks to Brent!. If anyone else has any of the soundtanks i'm missing, let me know.
      Notes are in finnish, but the list is what i'm curretnly missing:
      http://muusikoiden.net/tori/nayta.php?id=760997
      I've also started to collect 7-series. The missing ones are listed here:
      http://muusikoiden.net/tori/nayta.php?id=771398

      So please, if anyone has any of those going unused, i'll buy them off from you.
      +m

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    6. The interesting side note about the soundtank series...the original distortion line was made with metal cases (like the one in the video)! This was only for one year though, so they're pretty rare. If you thought the plastic case ones can take a beating, the original metal case version is like stomping on a rock. As people realize this, the prices for the original metal case ones will soar. The metal case version 60's fuzz already goes for $100+ easily, and the others are following suit. If you find one, buy it immediately.

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  3. Built this today and it is good. 1N4007s for clippers. The bass content is amazing. Very fat metal style distortion with lots of definition and accuracy in its sound. Apparently removing the buffers really does something here as it's not as muffled as my original, but slightly brighter. Don't think it's the diodes, as schottkys should compress it even more than original 1N4148 equilevant. Still may it be what ever, this is very good distortion.
    +m

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  4. I might build this one soon, any good mods for it? Mid boost/hump/scoop option maybe? I'm also wanting to try different ICs with it.

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  5. Hi mirosol, I done it yesterday but it is very quiet (my 65W combo sound like 5W combo) only for this effect. Any advice? Can I an example replace any resistor or potentiometr?

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    1. My build is not quiet at all. So you should double check your board for solder bridges and bad joints.
      +m

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