My DS-1 Mods ... with sound clip.

[Melanhead]

The DS-1 and TS-9 are pretty different from each other.  You'd be much better off modding a SD-1 to get in to the TS category.  The SD-1 and TS-9 are practically identical circuits.  It's very easy to make one sound like the other.

Yup ... I have some cool mods for SD-1 as well  ... posted here somewhere ... they're so cheap and worth modding.

[vanhansen]

The DS-1 and TS-9 are pretty different from each other.  You'd be much better off modding a SD-1 to get in to the TS category.  The SD-1 and TS-9 are practically identical circuits.  It's very easy to make one sound like the other.

Yup ... I have some cool mods for SD-1 as well  ... posted here somewhere ... they're so cheap and worth modding.

Oh yeah.  I've already modded mine.  That was one of the first pedals I did mods too.  I just recently took out the stock diodes for some 1N4001's.  Sounds really nice and smooth now.

Edit: Got the DS-1 Mods page up on my site.

[Melanhead]

The DS-1 and TS-9 are pretty different from each other.  You'd be much better off modding a SD-1 to get in to the TS category.  The SD-1 and TS-9 are practically identical circuits.  It's very easy to make one sound like the other.

Yup ... I have some cool mods for SD-1 as well  ... posted here somewhere ... they're so cheap and worth modding.

Edit: Got the DS-1 Mods page up on my site.

Way cool dude!  ...

[gulliver]

Vanhansen, excellent site... http://diy.erikhansen.net/

I'm going to try some of your Dunlop wah wah mods.

[vanhansen]

Vanhansen, excellent site... http://diy.erikhansen.net/

I'm going to try some of your Dunlop wah wah mods.

It's nothing revolutionary by any means but thanks.   Just sharing my experience with stuff I've done.

Thank Andreas Möller for the Wah mods.  He helped me.

[gulliver]

Vanhansen, excellent site... http://diy.erikhansen.net/

I'm going to try some of your Dunlop wah wah mods.

It's nothing revolutionary by any means but thanks.   Just sharing my experience with stuff I've done.

Thank Andreas Möller for the Wah mods.  He helped me.

Here's my physical wah-wah mod, so far. I call it the woodpecker as engineer Ron Peck tapped it for me and had the perfect spring in his junk box    You're welcome to post pictures on your site if you feel it's worthy...

http://thegearpage.net/board/showthread.php?p=1237571#post1237571

[mojotron]

http://www.tonepad.com/getFile.asp?id=78
Found this at tonepad . com but it states "workalike" Boss DS1. Does anyone know if it is a different design or a clone of the DS1.
(knew I should have saved that stuff when I could have)

I'm sure FP could give you a more direct answer, but from looking at the schematics of the DS-1 and Tonepad's I can see that they are effectively the same circuit. The Tonepad version has a a different bypass circuit (true bypass) and a clever adaptation to use easier to find dual opamps. So, they are the same circuit, but the schematic is laid out a bit differently.

I'm modding my Tonepad version, I'll let you know how it goes.

[woulfer]

Did you do the Keely mod, then add/change the values you listed in this thread?

I modded a DS-1 with the only the components listed in this thread, and it is really harsh sounding (almost like a fuzz), especially when the strings are attacked hard. When I look at this thread for the keeley mods:

http://www.elixant.com/~stompbox/smfforum/index.php?topic=42637.msg308665#msg308665

I see some different components were changed for the keeley mod. So my question is again, Do I need to change the rest of the components to the "Keeley" specs, or are the parts listed in this thread all the changes you did?

Your pedal sounds freakin' great on all the amps you used for your sound clips!!!

[woulfer]

Man I feel stupid. I was thinking there were things changed in the Keeley mod that weren't changed in this mod.

Sorry.

I do have something wrong though, I believe. As I said in my previous post, it sounds real buzzy, with no clear articulation of the notes when the strings are attacked firmly. The SEM Led doesn't seem as bright when this while this buzzy sound is happening, but brightens up as the sound becomes better. I put a new battery because the old one was getting low (8.1v), but it does the same with the new battery. Any suggestions?

[mojotron]

I did some work to mod my Tonepad DS-1 work-alike - which uses a TL072. I found out that the Tonepad circuit has some changes from the DS-1 to support the TL072, but these mods fit right in place if you replace the same components as on the service manual.

What I ended up with after some experimentation on the Tonepad DS-1 is:
(Note some of the the Tonepad components are not labled)
- From the left - moving right - the first 1 coupling caps I made .47uF
- left C1 alone
- C4 = 220pF
- The .01 cap in parallel with the clipping diodes I made .047uF
- Don't mess with C5 (.47uF) - the gain is high/fat enough with
  either a 4k7 or 2k2 resistor above it
    - I actually put a 10kB pot in for the 4k7 resistor above C5 - the TL072 to
      adjust the knee in the feedback circuit - this adjusts where the distortion
      is accentuated as well as the level of distiotion.

Everything else dropped in when comparing the service manual schematic, the mods in this thread and Tonepad's schematic.

Basically, what I liked was to keep the caps about 20% smaller on earlier gain stages (on the left side of the schematic) and fatten up the right side of the schematic - the later stages.  The .01 cap in parallel with the clipping diodes sounds great to me with .033 or .047uF

[woulfer]

I took C3 and changed it from .068uf to .047uf, and it smoothed everything out real nice. The pedal sounds fantastic now. I have another stock DS-1 here to compare it to, and you can hardly tell it's the same pedal.

Thanks everyone for your help and knowlege!!

[mojotron]

Well I got sound samples of my Tonepad DS1 that I modded, however these are a bit rough.. I still don't have a decent mic so I recorded into my Zoom 9002 with just a touch of EQ (to get it to sound normal) and a little reverb using a Ibanez S470 with a Gibson Classic '57+ in the bridge.
Note:
- The mods I did are listed above - 2 posts back.
- In these sound samples:
  - The first 15 seconds is identical, just a clean bridge pickup and
    that crappy "Zoom" sound - it works... 
  - I start playing some chords, back off the volume, then bring the volume back
    up

For the first sound sample the gain is a 3 o'clock, tone is at 9 o'clock, and vol at 9 o'clock.
http://mojotronics.com/tunes/ds1-tonepad-demo.mp3
I was going for a lot of harmonic complexity - the modded DS1 makes some really cool upper-mids come out - these mids make for some great harmonics...

For the 2nd sound sample the gain is a 1 o'clock, tone is at 12 o'clock, and vol at 9 o'clock.
http://mojotronics.com/tunes/ds1-tonepad-demo2.mp3
the tone is a little lighter - cleans up a little better - still pretty heavy though.
Also, in this one I play with the volume knob a little more, and in the middle I flick over from just bridge to bridge+neck for about 2 seconds - then back to just bridge. 

[gulliver]

Nice clips.

I spent hours this weekend on the DS-1. I tried all kinds of diode combinations to try to finds something better than the Keeley-one stock diode, one LED, (D4 & D5) seeing eye mod, which is pretty darn good. So now, I have the seeing eye mod switchable to one stock diode and three LEDs in series (D4 & D5).

The tone is close, but much less compressed. Great for adding that little extra boost to an already high gain signal. I like it better than the ultra mod.

I think the best thing to do, as I was doing this weekend, is get two DS-1s and have hard wires coming out of them for quick and non-destructive diode changes. The differences are so small, it's tough to gauge changes without a real-time A/B test.

[gulliver]

With the Keeley types mods, I've noticed the presence on this pedal is a little like fingernails on a chalkboard. Maybe it's the LEDs, I don't know. Anyone have any suggestions for fatten or darken the highest of highs on this?

[theblueark]

Remember me from the other thread where I made the multiple selectable clipping mod for the DS1? Decided to post on this more popular and accessible thread. Here are *finally* some clips 

Stock: http://www.soundclick.com/util/getplayer.m3u?id=3681194&q=hi
Germaniums: http://www.soundclick.com/util/getplayer.m3u?id=3681207&q=hi
LEDs: http://www.soundclick.com/util/getplayer.m3u?id=3681215&q=hi
Tubes: http://www.soundclick.com/util/getplayer.m3u?id=3681221&q=hi
LED/Silicon: http://www.soundclick.com/util/getplayer.m3u?id=3681294&q=hi

All together in this order: stock --> germaniums --> LEDs --> Tube --> LED/Silicon
http://www.soundclick.com/util/getplayer.m3u?id=3681224&q=hi

Output volume comparison: http://www.soundclick.com/util/getplayer.m3u?id=3681229&q=hi

If I remember I left C10 as stock. So these soundclips reflect changes only in the D4 and D5 diodes.

[freak scene]

i did the keeley mod on mine and when i use my telecaster with bill lawrence humbuckers it sags really hard if i strum a chord really hard, especially open g b and e strings.  and while this is cool its not entirely useful.  it doesnt do it to my other guitars.  is there anything i need to do to fix this?

[woulfer]

I'm not quite sure what the Keeley mod has in C3, but I did the mods Melenhead suggest here. I had the same problem. I ended up changing C3 from a .068uf to a .047uf. The explaination I found somewhere on this forum was that there was too much bass before the clipping section, causing the "sag". That is, of course, assuming we both mean the same thing when saying "sag". Give it a try, it's real easy to swap out. If that doesn't fix it, try a .022uf or .01uf.

Or maybe someone else will have a better sugguestion. I am but a humble noobie.

[Melanhead]

definitely something to try ... There's a lot of bass added in the Keeley, mine not as much, but there's still more than normal. Lower the value of C3 to taste ... that's all I did

I haven't used mine in months, replaced it with my modded to death Rat clone thingy ( The Headcase ) but one thing I did notice about the DS-1 is it's response to the way it's played... I don't really know how to explain it, but you have to play it a certain way to make it sound good ... it's like a feel thing, with me anyways.

[mojotron]

I'm not quite sure what the Keeley mod has in C3, but I did the mods Melenhead suggest here. I had the same problem. I ended up changing C3 from a .068uf to a .047uf. The explaination I found somewhere on this forum was that there was too much bass before the clipping section, causing the "sag". That is, of course, assuming we both mean the same thing when saying "sag". Give it a try, it's real easy to swap out. If that doesn't fix it, try a .022uf or .01uf.

Or maybe someone else will have a better sugguestion. I am but a humble noobie.

Yep, I ran into the same problem, or at least noticed it a few days ago playing with different guitars. I'll see if this fixes my problem. Thanks!

[lenwood]

Another thing you might like to try (I like it) is to change the output buffer to TS808 style
by changing R22 to 100ohm.