Klon/Imp Build

[Ny_racer_xxx]

 Well not a build yet, I have the boards and gathering parts just a simple question.

MAX1044 from I gather were in the original, why use a ICL7660?  You can still get the 1044 and I know they are swappable, and I guess pretty much electrically the same? For no other reason than aesthetics I like to keep my builds as true to the originals as possible when I can, but wondering if there's a sonic reason...

Thanks
CR

[jessenator]

No. Electrically the 1044 and 7660 are the same. But if you believe that a JRC4558 from the '70s is the only true marker for a tube screamer, then I doubt anyone can convince you otherwise

As with all pedal applications you'll want to get the "S" SKU —TC7660S/1044S otherwise you'll get heterodyne squeal

Don't waste your money on a 1054

[Ny_racer_xxx]

 You know with a lot of things in life, it's isn't just the "one thing" it's the sum of all the parts.  I'm going to socket the chips anyway and buy both, I'll A/B them to see if I can actually hear a difference, probably not, just curious as to why the 1044 wasn't used.
 I was reading an excerpt from the guy that built the Klon's, one of the biggests factors were the clipping diodes, so many manufacturers and he said some made a huge difference in the sound of it...  George Lynch swears the earlier version with the "Malaysian chip".  I don't know if that's the MAX1044 or the op amps??

Thanks for your reply!!!

CR

[jimilee]

The charge pump is just to raise the voltages. I built one without a charge pump and then powered it with 9 and with 18. The only difference there was is when the breakup started.

There is a difference in clipping diodes, that for sure. I like to audition GEs to see what I like.


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[jessenator]

The charge pump is just to raise the voltages. I built one without a charge pump and then powered it with 9 and with 18. The only difference there was is when the breakup started.

There is a difference in clipping diodes, that for sure. I like to audition GEs to see what I like.

EffectsLayouts / storyboardist once had a project based on the bare bones klone project on FSB forum (skeklone) that omits the charge pump entirely in favor of using a higher quality set of dual op-amps (or a quad in the case of the skeleklone). Essentially, like jimi said, the charge pump is to keep the TL072s from distorting "improperly".

From the skeleklone 2 build doc:

based on the Bare Bone Klone concept put forth by FSB member earthtonesaudio. The idea being that the charge pump in the Klon is unnecessary, as the only reason it's there is to keep the 2nd opamp from clipping. However, since clipping diodes are in the signal path before signal reaches that opamp, and the fact that the 2nd opamp in a Klon can clip even with a charge pump, the presence of the charge pump isn't really needed. Especially if you use op‐amps that sound better when distorted.

And the clipping diodes make the most difference. Taste is subjective, and this horse has been beaten to death ...again and again. So Jimi is 100% right: experiment with what you like the best. I played myself, not knowing some of the diodes I had were not genuine 1N270s, and I actually ended up liking them the best.

Check out the build doc for the rev 3 Sunking for some recommendations:

...1n34a, 1n270, 1n60, BAT41 and 1n914. It's a good idea to socket these two and experiment to find your favorites. My personal favorite is BAT41.

I think I tricked myself with some unlabeled, weirdo 1N914s. To add my opinion to the pile, the 1N60P is good, also. I personally hate the sound of the 1N34A. Soviet era D9E is nice.

[jimilee]

The charge pump is just to raise the voltages. I built one without a charge pump and then powered it with 9 and with 18. The only difference there was is when the breakup started.

There is a difference in clipping diodes, that for sure. I like to audition GEs to see what I like.

EffectsLayouts / storyboardist once had a project based on the bare bones klone project on FSB forum (skeklone) that omits the charge pump entirely in favor of using a higher quality set of dual op-amps (or a quad in the case of the skeleklone). Essentially, like jimi said, the charge pump is to keep the TL072s from distorting "improperly".

From the skeleklone 2 build doc:

based on the Bare Bone Klone concept put forth by FSB member earthtonesaudio. The idea being that the charge pump in the Klon is unnecessary, as the only reason it's there is to keep the 2nd opamp from clipping. However, since clipping diodes are in the signal path before signal reaches that opamp, and the fact that the 2nd opamp in a Klon can clip even with a charge pump, the presence of the charge pump isn't really needed. Especially if you use op‐amps that sound better when distorted.

And the clipping diodes make the most difference. Taste is subjective, and this horse has been beaten to death ...again and again. So Jimi is 100% right: experiment with what you like the best. I played myself, not knowing some of the diodes I had were not genuine 1N270s, and I actually ended up liking them the best.

Check out the build doc for the rev 3 Sunking for some recommendations:

...1n34a, 1n270, 1n60, BAT41 and 1n914. It's a good idea to socket these two and experiment to find your favorites. My personal favorite is BAT41.

I think I tricked myself with some unlabeled, weirdo 1N914s. To add my opinion to the pile, the 1N60P is good, also. I personally hate the sound of the 1N34A. Soviet era D9E is nice.

Yep, I made PCBs based on that layout. I don't o ow if I have any still laying around or not.


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