ds-1 mods

dangb523 · May 20, 2007, 04:36:26 PM

im sure all of you have heard of the keely mods to the ds 1,
and im thinking of doing them to my own ds 1 ,
but what i would like to kno, is what does what
here is the link to the website to the instruction on how to to the mods
http://www.geocities.com/overdrivespider/DS1/keeleyds1.htm

and here are the parts (the web sites show it but ill put it here anyway)

0.1uF Capacitor x 5
1uF Capacitor x 4 (or two 0.47uF caps in parallel, it should give the same results)
0.047uF Capacitor x 1
3mm LED x 1 (I bought two so I didn't have to use the one that you take out of the DS-1)
on/on SPDT switch
2.4k Resistor x 1
20k Resistor x 1
1.5k Resistor x 1
220pf Cap x 1
47pf Cap x 1

wich parts to what to your tone

id like to kno what does what , so i could put in the mods that i want, instead of putting them all in to see how they sound

thanks

Blaze · May 20, 2007, 04:52:26 PM

Don't know much about the sound properties but I used this( http://www.monteallums.com/Product_links.html#DS1DRectifier) on my DS-1 and is is AWESOME!

runmikeyrun · May 20, 2007, 05:31:21 PM

Use the SEARCH button for ds-1 mods and you'll get a bunch of them here. I changed a resistor value (sorry don't remember which) for more gain and messed with the clipping diodes. It screams!!!

96ecss · May 20, 2007, 06:01:50 PM

Quote from: runmikeyrun on May 20, 2007, 05:31:21 PM
Use the SEARCH button for ds-1 mods and you'll get a bunch of them here. I changed a resistor value (sorry don't remember which) for more gain and messed with the clipping diodes. It screams!!!

The Gain Resistor is R13. It's 4.7K stock. I lower it down to 2.2K or even 1K. I like 1N4002 or LED's for the diodes.

Dave

DBDbadreligion · May 20, 2007, 09:54:22 PM

Quote from: Blaze on May 20, 2007, 04:52:26 PM
Don't know much about the sound properties but I used this( http://www.monteallums.com/Product_links.html#DS1DRectifier) on my DS-1 and is is AWESOME!

i used this mod to, definately the best distortion i have ever used or heard.

hobojoe · May 21, 2007, 02:56:13 AM

I recently stumbled across that page also and did the ASE mod to mine and it sounds great. You should also check out this thread
http://www.diystompboxes.com/smfforum/index.php?topic=32443.0

melanhead has got some pretty sweet sounds out of his and I might change some parts to what he used

Im not really sure what mods do what tho, thats a little too advanced for me right now =P

Melanhead · May 21, 2007, 02:01:40 PM

Yup ...thanks ...They can sound pretty sweet if you play around a bit ... That reminds me! I have one sitting on my bench, half modded, haven't touched it in about 6 months! ... I should probably finish it some day

TR in NC · May 21, 2007, 06:13:37 PM

This is what I was kinda looking for...with all the mods talked about, I wanted to see what each mod was actually doing circuit wise. With the help of some DIY'ers I was directed to a bunch of mod posts and a few circuit links. There is a ton of info here...should keep anyone busy for a while

runmikeyrun · May 21, 2007, 09:12:06 PM

that's why i love the search feature, any time i have an idea or question someone else has usually asked it before me and i get the answer instantly! There always seems to be at least a couple of threads on whatever i need to know.

truckstopchuckie · June 08, 2007, 01:38:46 AM

Hi folks. I1m new to this forum (registered a while ago, but haven't written my first post until now.

As so many others, I'm about to modify my DS-1. I am almost done, the only thing thats left is that dull LED. I've replaced the stock red one with a green. Where on the circuit board is the LED connected? I am gonna lower the resistor value to get it brighter.

Thanks.
Truckstop Chuckie (from Norway).

DBDbadreligion · June 08, 2007, 01:59:53 AM

the rectifier mod is an excellent mod. i used it myself and i highly recommend it if you want a good all around "in yo face" distortion.

m-theory · June 08, 2007, 10:32:38 AM

QuoteI am almost done, the only thing thats left is that dull LED. I've replaced the stock red one with a green. Where on the circuit board is the LED connected? I am gonna lower the resistor value to get it brighter.

R35
http://www.robertkeeley.com/audio6l6/dstech.html

truckstopchuckie · June 08, 2007, 12:23:36 PM

Quote from: m-theory on June 08, 2007, 10:32:38 AM
QuoteI am almost done, the only thing thats left is that dull LED. I've replaced the stock red one with a green. Where on the circuit board is the LED connected? I am gonna lower the resistor value to get it brighter.

R35
http://www.robertkeeley.com/audio6l6/dstech.html

Thanks. I've been looking at that side a lot, but still I didn't see it

beatstrat · June 08, 2007, 05:24:46 PM

I built a DS-1 clone from Tonepad's layout and used the original 7 pin chip (along with various deviations from stock capacitor values to sculpt the tone for my ears/rig). After playing with various clipping diodes, etc, I left them out altogether - with no clippers to ground and with the gain maxxed it sounds really nice and meaty - very, very nice; really clean with gain at minimum but plenty of meaty drive with gain at max.

Dragonfly · June 08, 2007, 05:40:55 PM

Quote from: runmikeyrun on May 21, 2007, 09:12:06 PM
that's why i love the search feature, any time i have an idea or question someone else has usually asked it before me and i get the answer instantly! There always seems to be at least a couple of threads on whatever i need to know.

Instant answers using the "search function" > Answers you have to wait for by asking the question again

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ds-1 mods