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DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  Modding Boss SD-1 0 and 1 Guest are viewing this topic. « previous next »
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: Modding Boss SD-1  ( 976 )
jonathansuhr
: 129


Modding Boss SD-1
« : April 18, 2013, 04:29:26 AM »

If I replace all the electrolytic caps that are rated <50V, is the pedal safe to run on 18v?
duck_arse
: 3594



Re: Modding Boss SD-1
« #1 : April 18, 2013, 05:23:34 AM »

there is an internal zener diode to provide over-voltage protection. the value is not shown on my circuit, but it would be less than 15V, I'm guessing. these are fitted to stop damage from 18V adaptors, and the like.

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MartyMart
: 6064


Martin L / Berlin for a while


Re: Modding Boss SD-1
« #2 : April 18, 2013, 06:06:45 AM »

If I replace all the electrolytic caps that are rated <50V, is the pedal safe to run on 18v?

They might get a little large for the enclosure, 25v or 35v is fine and should be smaller - though check when you order them.

Yes the reverse protection diode will have to be replaced.

You will gain some headroom but it's not a huge change IMHO

M

"Success is the ability to go from one failure to another with no loss of enthusiasm"
My Website www.martinlister.com
DougH
: 6113


Re: Modding Boss SD-1
« #3 : April 18, 2013, 06:35:30 AM »

Is that really you, John Suhr?...

"I can explain it to you, but I can't understand it for you."
Electron Tornado
: 695


Re: Modding Boss SD-1
« #4 : April 18, 2013, 09:12:51 AM »

If I replace all the electrolytic caps that are rated <50V, is the pedal safe to run on 18v?

18v is the max supply voltage for the 4558.

OK, where's the data?

"Top hole. Bally Jerry pranged his kite right in the how's your father. Hairy blighter, dicky-birdied, feathered back on his Sammy, took a waspy, flipped over his Betty Harper's and caught his can in the Bertie."
roseblood11
: 493



Re: Modding Boss SD-1
« #5 : April 18, 2013, 09:17:43 AM »

No, it's +/- 18V...

wavley
: 2055


Staunton, VA


Re: Modding Boss SD-1
« #6 : April 18, 2013, 09:37:22 AM »

I don't get the benefit of adding headroom to this pedal, isn't it just going to be negated by the clipping diodes?

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Ben N
: 3395

Ben N. - really! Now Israel, once Baltimore


Re: Modding Boss SD-1
« #7 : April 18, 2013, 11:23:24 AM »

I've got a Barber Direct Drive, which is sonically similar to an SD-1 (I use them almost interchangeably even though the Barber's midhump is slightly less pronounced) and advertised to be 18V-ready. I tried 18V for a while, but I honestly didn't hear much of a difference, if any, and it wasn't worth the extra wallwart.
EATyourGuitar
: 514


ALL YOUR BASE ARE BELONG TO US


Re: Modding Boss SD-1
« #8 : April 18, 2013, 03:24:27 PM »

I don't get the benefit of adding headroom to this pedal, isn't it just going to be negated by the clipping diodes?

maybe double up the diodes while your in there?

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