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midibuddy
Silver Member
Ecuador
285 Posts |
 Posted - 04/25/2007 : 16:55:19
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what's your favorite? Are there any others, I only know Keeley and AnalogMan ones... Where can I buy mods to make them myself? Where can I download schematics? Are they easy to make?
Thanks for your help! |
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ToneDeaf
Copper Member
USA
42 Posts |
Posted - 05/14/2007 : 04:33:29
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I had a newe taiwan DS-1, and I half-ass attempted to do the keeley Seeing Eye mod, but after just clipping and removing diode D5, it sounded much better to me, not as much distortion, granted, but more output and a better boost, Im sure this is the wrong way to do it, but it improved it dramatically. I dont know how bad of an idea it is but mine worked fine (I have traded it since for and old MXR).
John |
Edited by - ToneDeaf on 05/14/2007 04:36:15 |
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ToneDeaf
Copper Member
USA
42 Posts |
Posted - 05/14/2007 : 04:34:57
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| Oh by the way, the tone control seemd more tranparent afterwards and wasnt so fizzy and trebly. I guess I changed its clipping or something. |
Edited by - ToneDeaf on 05/14/2007 04:37:41 |
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Goran
Double Platinum Member
Sweden
2203 Posts |
Posted - 05/14/2007 : 10:26:53
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quote:
Originally posted by ToneDeaf
I had a newe taiwan DS-1, and I half-ass attempted to do the keeley Seeing Eye mod, but after just clipping and removing diode D5, it sounded much better to me, not as much distortion, granted, but more output and a better boost, Im sure this is the wrong way to do it, but it improved it dramatically. I dont know how bad of an idea it is but mine worked fine (I have traded it since for and old MXR).
John
As you describes the result this could be the Stinkfoot DS-1 mod, although he adds a yellow LED instead of the red one. And it is his cheapest mod. |
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ToneDeaf
Copper Member
USA
42 Posts |
Posted - 05/14/2007 : 11:48:34
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By just removing the D5 Diode? would I be correct in assuming that this would turn it to symmetrical clipping?
Thanks |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/14/2007 : 13:25:49
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quote:
Originally posted by ToneDeaf
By just removing the D5 Diode? would I be correct in assuming that this would turn it to symmetrical clipping?
Thanks
Hi ToneDeaf
What they actually really mean, is you have to short out D5 or D6.
Else D4 is the only diode still working, in the clipping section, & YES.... you will have VERY ASYMMETRICAL clipping, as only one diode will be working in that part of the circuit. 
I guess even this type of mod might be worth trying out --- one day --- MAYBE --- Hmmmm ---
Just short out D5 or D6 for asymmetrical clipping.
If you have the Schematic for the SD-1, you will see what I am trying to explain.
Hope this helps.
Regards Dr. Bob 
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ToneDeaf
Copper Member
USA
42 Posts |
Posted - 05/14/2007 : 16:32:00
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Thanks Dr. Bob, I figured that this was an odd way o do it and wrong, but it sounds pretty good, I do basically understand the clipping diodes. Its more of a boost/gain now rather than fizzy fuzz fest. Thanks again.
John |
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ToneDeaf
Copper Member
USA
42 Posts |
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stinkfoot
Silver Member
Sweden
181 Posts |
Posted - 05/24/2007 : 22:13:16
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quote:
Originally posted by Goran
As you describes the result this could be the Stinkfoot DS-1 mod, although he adds a yellow LED instead of the red one. And it is his cheapest mod.
Granted, the DS-1 mod isn't very complicated (it's only a few changes), but it's not that easy...  The yellow LED is the on/off LED, which doesn't change the sound at all.
I replace both clipping diodes (D4 and D5) with LED's, for a ballsier, louder and more dynamic distortion. I then replace a few choice capacitors as well, to tailor the tone a little bit. But just changing those to diodes to LED's does make a world of difference.
/Andreas |
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ChristoMephisto
Platinum Member
Canada
1288 Posts |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/29/2008 : 06:22:37
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quote:
Originally posted by ChristoMephisto
Heres a great write up on clipping diodes
http://www.diystompboxes.com/pedals/diodes.html
cheers thanks christo. thats a lot of info for those little things that makes a big difference in our little pedals. i have to read it slowly tho. mabuhay!
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maxm3210
Copper Member
USA
7 Posts |
Posted - 01/31/2008 : 20:57:25
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The DS1 was my fist pedal ever and I really liked it but hated the tone control which is very useless and the treble. I decided one day to try the Keeley Seen Eye mod. I was hooked into pedal modifying you just need an led and and change a few capacitors.
My favorite mod for the DS1 is to put one LED and one Germanium diode 1n43a back to back. I like the tone of this mod it lets you dig in those bends. This mod is great for SHRED not so much as a booster, but its worth a try.
MAX |
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ESPImperium
Bronze Member
United Kingdom
132 Posts |
Posted - 02/20/2008 : 01:19:58
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I have a DS-1 that i hate at the moment, im thinking about modding it now as i was gonna trade it in.
What i want to know is can you put a switch to switch between say the Seeing Eye mod and say a Symetrical clipping mode??? And is there a way you can put a pot or something that can be varied in the place of a cap???
As i think i may be intrested in doing something like that to my DS-1 as i wouldnt get much in a trade in for it anyways, maybes �5-10 if im lucky as they are only like �29-35.
Also how would i go about changing the current LED check LED for a chigh lumosity LED as well for a cool factor???
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 02/24/2008 : 01:32:34
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I recently did the seeing eye mod to my MIT DS-1 and I have to say it surprised me how much better it sounds. One of the favorite pedals in my board now.
Laurie. |
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stinkfoot
Silver Member
Sweden
181 Posts |
Posted - 02/24/2008 : 15:59:53
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D4 and D5 are the only clipping diodes in the DS-1 circuit. D6 and D7 are part of the switching circuit, and should not be touched.
Now, D4 and D5 are connected in opposite direction to each other (so one clips the top part of the wave, while the other clips the bottom). When both are the same type, you have symmetric clipping (both clip the same way and at the same point). If you change one for a different type (like the Seeing Eye mod, where one of the diodes are replaced with a 3mm red LED), you get assymmetrical clipping.
Now, different diodes clip in different ways. With a silicon diode (1N4148 or similar) as reference, an LED will clip much later (giving you more volume and less distortion) while a germanium diode will clip much earlier (less volume, more distortion).
You can then experiment with various combinations - the Seeing Eye type clipping works great for when you want to keep the pedal firmly in the "distortion" camp, but still want more volume and clarity. Use a germanium diode instead of an LED (with the stock 1N4148 still in the other spot), and you'll get a much more compressed tone. If you remove one of the diodes completely, you'll get a very asymmetrical clipping as only half the wave will be clipped at all - the other half will be clean, as long as the op-amp stays clean.
I like LEDs for both D4 and D5, for symmetrical late clipping. This turns the DS-1 into a very loud, dynamic pedal with not nearly as much distortion available. Great for boosting an old Marshall or "classic rock" tones, but not so good for high-gain tones on a clean amp.
/Andreas |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/28/2008 : 02:04:30
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I've just looked at the circuit and I can't see any easy to make it louder...
Putting a LED in series with D5 will alter the distortion characteristic, but probably not the volume.
If it was me, I'd try increasing R11 to 200k and see if that does anything useful. But it would just be experimenting... Dr. Bob will probably have a better handle on this than me.
On this topic - I've just bought a nice used DS-1. What, exactly was you mod that you liked so much? Diode part numbers? Anything else changed?
Regards,
Laurie. |
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Topic |
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BOSS DS-1 mods
