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zerksies
Double Platinum Member
USA
4570 Posts |
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Foulacy
Bronze Member
USA
70 Posts |
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zerksies
Double Platinum Member
USA
4570 Posts |
 Posted - 01/25/2010 : 02:57:58
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| I have them in books, thanks for the pages. does anyone have the keeley mod |
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cctsim
Gold Member
United Kingdom
500 Posts |
Posted - 01/26/2010 : 15:37:50
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There you go.
This is from the time when it was available on Keeley's website. Also, it didn't have the diode switch option and stacked opamp at that point.
***** Boss SD-1 5-Star Ge Keeley Mod *****
Keeley Custom Shop designed this mod to enhance the tone and functionality of the SD-1.
Freely copy and distribute. We have the right to change our modifications at any time without notification. It is fun to watch what big name people use the mods.
* Board Number, New part, Old part, Reason, Where to get the part
* C10 --> Metal Stack Film 1uF, remove electrolytic, increased fidelity, digikey
* C7--> Metal Stack Film 1uF, remove electrolytic, increased fidelity, digikey
* R6 --> 2.4k ohm metal film, 4.7k, increased distortion, digikey
* C3--> 0.1uf metal stack film, 0.047uf, fidelity and bass response, digikey
* C2--> 0.1uf metal stack film, 0.018 fidelity and bass response, digikey
* R2--> 620k ohm metal film, 470k ohm, increased input impedance, better bypass, digikey
* Add 47pF cap across diodes in clipping section to smooth out distortion, just like TS9, radio shack
On some older units, short out D3 and the 470 ohm resistor in the power supply section to increase the voltage to the circuit. This increase the headroom and gain. Newer units have it shorted already.
Here is the tricky part of our mod, take a germanium (Ge) transistor and use the Base-Emitter junction (legs) of the device and use it in place of D6. If you use a PNP transistor, the Base will be the negative or cathode side, the Emitter will be the anode. Here is a diode drawing Cathode---|<----Anode. This increases the amount of distortion produced by the pedal, it also sound really nice. Try this! Don't leave it out! It's fun. Get your Ge transistors from Steve Daniels http://www.smallbearelec.com/
If you want to drill out the LED and install a 5mm big job, change R30 to a 1.2k-3.3k ohm depending on brightness and battery drain you want, replacing the stock 3.9k ohm.
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zerksies
Double Platinum Member
USA
4570 Posts |
Posted - 01/26/2010 : 18:02:08
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| THANKS i just bought the monteallum sd-1 mod kit and the clipping switch between boss and ibenez clipings. this will be my first mod. so wish me luck |
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Dr. Bob
Moderator
Australia
7194 Posts |
Posted - 01/27/2010 : 14:05:19
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quote:
Originally posted by zerksies
THANKS i just bought the monteallum sd-1 mod kit and the clipping switch between boss and ibenez clipings. this will be my first mod. so wish me luck
Hi zerksies
First pedal mod - big step.
Good Luck.
Keep us informed of your progress.
Perhaps take a pic or two of your workmanship, if you remember or get the time.
And tell us about your before & after opinion/s.
Regards Dr. Bob  |
Edited by - Dr. Bob on 01/27/2010 14:07:06 |
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zerksies
Double Platinum Member
USA
4570 Posts |
Posted - 01/27/2010 : 14:09:05
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| ok, Dr.bob i will, well first opinon of the sd-1 is i hate it sounds horrible, i have never liked this pedal, it seems to be missing something. so it's perfect for a mod |
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zerksies
Double Platinum Member
USA
4570 Posts |
Posted - 01/28/2010 : 18:08:34
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| well i bought a new solder sucker yesterday and will take pics of the process |
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DasBeef
Platinum Member
United Kingdom
1213 Posts |
Posted - 01/28/2010 : 21:47:08
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| I bought a cheap faulty SD-1 off eBay for cheap to try my first modding project. First fix it, then mod it. I'll be interested to see how you get on zerksies. |
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zerksies
Double Platinum Member
USA
4570 Posts |
Posted - 01/28/2010 : 22:18:48
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| this one was brand new i got it for 27 dollars |
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Laurie
Double Platinum Member
Canada
5673 Posts |
Posted - 01/28/2010 : 22:43:31
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quote:
Originally posted by zerksies
this one was brand new i got it for 27 dollars
Bastard!  |
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DasBeef
Platinum Member
United Kingdom
1213 Posts |
Posted - 01/28/2010 : 23:01:10
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quote:
Originally posted by Laurie
quote:
Originally posted by zerksies
this one was brand new i got it for 27 dollars
Bastard!
Yup. My faulty boy nearly cost that much. Including shipping it was more.
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zerksies
Double Platinum Member
USA
4570 Posts |
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DasBeef
Platinum Member
United Kingdom
1213 Posts |
Posted - 01/29/2010 : 00:17:23
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SD-1
According to ebay's currency conversions, I payed more. Still not a bad price. |
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Laurie
Double Platinum Member
Canada
5673 Posts |
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zerksies
Double Platinum Member
USA
4570 Posts |
Posted - 01/29/2010 : 02:30:43
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| I have been looking for one for months, I really don't like the sound of this pedal much, and would like to mod it to see if it becomes a pedal that i would like.So i know i use to be able to pick it up for 49 but price changes brought it up to 59, So i knew i could pick one up cheaply soon ,i just had to wait a few months.Hopefully i should get it this weekend a have a nice project to do. |
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Sd-1 MOds
