NPD: Again! Boss SD-1 I Made A Huge Mistake!

[theaxeman]

I made a huge mistake this morning.

I didn't close the browser tab for CL. Instead I clicked on the search again and since it was still searching for SD-1 this pedal popped up. It was about 3 miles from my house. It was mixed in with a guitar sale. I called and asked if the guy would sell it separately. He said sure. I asked how much, and he said $30.00. I said I'd be right over and pick it up.

This is how it goes with me and guitar related gear. I never have enough patience, and have no self control at all. So here I sit with two pedals.

Still I'm happy I found one and at a reasonable price.

It is a January 1996 MIT build, in pretty much mint condition. Came with original box and papers. I snapped a pic of the PCB, and it doesn't look like it has ever been molested. You guys can say for sure.

So now I have a DS-1, and an SD-1. I tried it out vs. th DS-1, and there is a difference in the sound for sure. I wouldn't say one is better or worse than the other, just different, and I'm sure I will find uses for both pedals eventually, but I think Batman is correct, the SD-1 will give me more of the "Blues" tone that I'm looking for.

So IIRC from the other thread, all that is needed on the SD-1 is to clip C6 or un-solder it, and pull it out?

Here are the pics or it didn't happen.

 

[Stillhouse]

I wouldn't call it a mistake, more like a happy accident. The SD-1 is a really good OD, and gets even better if you simply cut the C6 cap off.

 

[gibsonguitar1988]

I just clipped both legs and left it wide open with no jumper. Sounds great to me.

 

[AngryHatter]

It might be a drive, but I have a bunch of pedals for sale!

Nice score.

 

[theaxeman]

I wouldn't call it a mistake, more like a happy accident. The SD-1 is a really good OD, and gets even better if you simply cut the C6 cap off.

The mistake was clicking on the search again.

I'm supposed to be saving my money right now until I get moved in mid July.

I am in desperate need of PAS therapy.

Yes, I am happy!!!

 

[theaxeman]

I just clipped both legs and left it wide open with no jumper. Sounds great to me.

Thanks guy!!

That's what I will do.

 

[theaxeman]

It might be a drive, but I have a bunch of pedals for sale!

Nice score.

Thanks!!!

No, don't tell me what you've got, nor where you live. I can't afford anything else right now.

 

[Batman]

I desoldered mine but clipping is just as easy.

You want it gone from the circuit; no jumper.

Here are the full list of tweaks I got from HOT TUBES 70. . .

To maximize the increases in clarity, high quality metalized film or Mylar 50-volt caps and 1% metal film resistors should be used. (This is what I used in mine)

C1 - .047uf
C2 - .047uf
C3 - .12 uf ( more bass yet .15 or .18 uf )
C4 - Controls mid range ,Less mid hump ? Change C4 to .047uf
C5 - .047
C6 - remove
C7 - 1 uf
C8 - .1 uf
R2 - 1 meg ohm
R6 - controls Gain 2.2k for more gain (4.7k factory value)
C10 - 33 uf (electrolytic can style cap required)
(if you change C10 the following changes are required)
R16-150 ohms
R17 to 51k ohms )

IC Chip - Replace with a JRC4558 (or two stacked for a smoother quieter pedal)

I really like the change to the mid empasis on this pedal now and how much smoother and less noisy it is. There is still a very slight mid-hump in the EQ, but with the other changes it is now a much more neutral EQ than stock.

 

[theaxeman]

I desoldered mine but clipping is just as easy.

You want it gone from the circuit; no jumper.

Here are the full list of tweaks I got from HOT TUBES 70. . .

To maximize the increases in clarity, high quality metalized film or Mylar 50-volt caps and 1% metal film resistors should be used. (This is what I used in mine)

C1 - .047uf
C2 - .047uf
C3 - .12 uf ( more bass yet .15 or .18 uf )
C4 - Controls mid range ,Less mid hump ? Change C4 to .047uf
C5 - .047
C6 - remove
C7 - 1 uf
C8 - .1 uf
R2 - 1 meg ohm
R6 - controls Gain 2.2k for more gain (4.7k factory value)
C10 - 33 uf (electrolytic can style cap required)
(if you change C10 the following changes are required)
R16-150 ohms
R17 to 51k ohms )

IC Chip - Replace with a JRC4558 (or two stacked for a smoother quieter pedal)

I really like the change to the mid empasis on this pedal now and how much smoother and less noisy it is. There is still a very slight mid-hump in the EQ, but with the other changes it is now a much more neutral EQ than stock.

Thanks Batman!!!

Your list is in the thread for posterity.

I just finished de-soldering my C6. I'll play it like that for a while and then we will see.

I'm trying hard not to spend any more money until after July.

I gotta quit reading in the Pedal Section. To the outward eye, it all seems a pretty inexpensive way to improve your tone. But a few bucks here, a few bucks there, and pretty soon you're talking real money.

 

[Batman]

The changes I would make again without even blinking are;

C6 - remove
C3 - .1uF
C4 - .047uF
R6 - 2.2K


Removes the high end fizz, adds more bass, gain and removes some mids. The rest is more hi-fi. . .these are the meat and potatos of the mods.

 

[theaxeman]

The changes I would make again without even blinking are;

C6 - remove
C3 - .1uF
C4 - .047uF
R6 - 2.2K


Removes the high end fizz, adds more bass, gain and removes some mids. The rest is more hi-fi. . .these are the meat and potatos of the mods.

Ok, I'll look and see what I have in my stash.

Dang! I looked at temptation and saw that she was a pedal.

 

[HOT TUBES 70]

I guess i should not have given out my mod info ....
Lesson learned !!

 

[snaredrum]

This is how it goes with me and guitar related gear. I never have enough patience, and have no self control at all.

no, that's me you're describing.

 

[theaxeman]

no, that's me you're describing.

I think it describes the majority of the people on this forum.

There's a reason there is a thread called "Pedal Acquisition Syndrome Pas Group" with over 9,000 posts in it.

 

[Paulinator]

no, that's me you're describing.

I'm glad I don't suffer from this at all. I have TOTAL self control, hardly ever buy the things...

...wait...

...just thought of a type of pedal I don't have yet, gotta run, see ya!!

 

[arthurkandziora]

Has anyone done a c6 mod to the sd-1? What's the difference? Thanks

 

[allbusinessjoe]

Huge mistake?

 

[Larcos_Unal]

Sorry I'm a n00b and I've never messed with my pedals but I happen to have a SD-1 and I was just about to scrap it from my board til I saw this thread. Are you telling me I can clip these two things and it will sound better??

 

[Batman]

Yes, it will remove the high end "fizz" and make the tone control slightly more useable.

It is not a massive change but it does make the pedal sound better IMO.

 

[theaxeman]

Huge mistake?

Alright, so it wasn't a mistake.

I really like this pedal!!

This pedal helped me to achieve the sound I was looking for in this thread.