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Yep, there's a 0.22uF cap to ground at the input to the second stage. You can reduce the value, or remove it entirely, to restore treble in the circuit.

There is also a small cap in the feedback of the first stage, but I would just leave it there.

Thanks!

PS - so the cap in the drive circuit really doesn't make a difference for my pedal (using it as a clean boost). So I left it out of the circuit. Removing the .22uf cap to ground before the active eq gave me a lot of treble. I prefer the pedal without the .22uf cap, and just keeping the tone knob lower; I get more sparkle that keeps my clean in the mix relative to the harmonic content of my overdriven sound. If I wasn't modding a POS TS5, I'd probably replace it with a smaller value cap.

Ok... I removed the treble cap in the drive circuit. I'm talking about the one that is 51pf in a TS9 (it was 47pf in my TS5). There might be a touch more treble.

What about the .22 cap? The one in series with the 1k resistor that makes the passive eq (low pass?) between the drive circuit and the active eq circuit? What if I remove or decrease that cap?

I have a TS5 I modified to be a clean boost - removed the clipping diodes and decreased the value of the R19 resistor.

I want a bit more treble though. How can I removed the treble-rolloff?
Doesn't some treble get sent to ground between the clipping circuit and the tone circuit?
IIRC, there is a cap that rolls off treble as the drive knob is turned up?

The effect of increasing the resistance feeding the diodes (or LED's) is that there will be less clipping and your volume will increase. You might also be in the situation where your op amp will clip instead of the diodes. Could be good or nasty, depending on your op amp (and your taste :-) )

Thanks!

That is one reason I was thinking about keeping the diodes - the avoid the opamp from being the first thing to distort (because I'm pretty sure that is not the sound I'm going for).

I'm getting a TS5 in the mail and my goal is to make it a clean, loud boost - while retaining as much of the tone and feel as possible (which is why I am considering this over clipping the diodes or using LEDs from the start - a clean TS still has a bit of squish I don't want to lose).

I usually leave the level knob maxed and was wondering if I could rewire the level knob to control how much signal goes through the Si Diodes? I other words, at one end of the 'level' knob would be like having the diodes removed from the circuit, the other end would be like the normal circuit. Does this seem possible? If so, how would you accomplish this?

I've also thought of (in combination with the above, or instead of):
- Removing 1 Si Diode
- Removing both Si Diodes
- Replacing one or both Diodes with LEDs
- Replacing the 51k resistor with a 10k resistor (R19 on the TS5, and IIRC R7 on the TS9) if I need more headroom

Diffused or clear red seem to be a good choice. It's all about the fV. Blue will have a different clipping point than red etc. Best to socket them and try various combos. Once you get a pair you like you can set two flavors up on a Dpdt switch.  If you use a center  off Dpdt, the middle position will have the cleanest and much louder sound.

Interesting about the different LEDs.

The switch is a good idea, but I already have 2 TS9s on my pedalboard. They are both vintage and I don't want to mod them. One has the drive set at 11 o'clock and the other is cranked. At this point, I roll down my volume knob for my clean tone, but wish the TS was a little cleaner and louder. I've tried a Keeley Red Dirt, which is the cleanest TS clone/boutique/mod I've found (I've tried many), and I also have a PQ9 that I set to have a similar EQ to a TS, but nothing sounds as good to mean as a real Ibanez TS9.

Yeah that's it. I also changed the "F" caps to the 1uf film. It helps with the low end distortion.

Cool - I guess I should order those if the bass is distorting after the other mods I do...

Which LEDs do you guys suggest? I am looking at the Water-Clear High Brightness ones on Small Bear.
They carry both 3 & 5mm - does that make any difference?
How about the color? Someone suggested 5mm Red? I had 3mm Blue in my cart (just picked one at random).

In the doc I sent you you can raise or lower the value you of a cap or two and the compression will either increase or decrease. I did a bunch of mods to a friends TS9 a couple of months ago and I changed a couple of resistors (made switchable) to decrease and increase drive. Try a few different diodes but do all the other mods with the stock diodes first. Then try switching between them. LEDs will make it MUCH louder so i would put them on a toggle switch with another pair to compare and contrast.

I can't figure out which caps you mean unless your talking about the R-C to ground that I mentioned:
2) C3 to .22uf & R6 to 1Kohm: more gain, same tone (First two steps of Wampler's 316 mod)

Change the clipping diodes to LEDs, that's all you need to do.

This. Or remove them all together if you want super loud and clean.

Thanks guys!

I want it super loud and clean, but I feel like there is a bit of compression even when a TS is clean - I dont want to lose that.

Thanks!
PM sent.

Someone also suggested replacing the 500K Drive pot with a 250K pot. Makes sense if the pedal still overdrives after the other mods.

I'm thinking about modding a TS9.

Goals:
-Cleaner
-Louder
-Keep the Midrange
-Keep the Compression

Changes I'm thinking about making
1) Clipping Diodes mod options (I'll pick one of these, maybe test a few):
-Lift (not enough compression? Too 'raw?')
-Bright LED
-Double the number of Silicon Diodes (enough boost and headroom?)
-Resistor in parallel as a partial lift (if so, what value resistor?)
2) C3 to .22uf & R6 to 1Kohm: more gain, same tone
3) R5 to 10ohm: more clean at the lower end of the drive knob.

Basically, I want to keep the pedal as true to an Ibanez TS9 as possible, but I want more headroom and a louder output.

Is there any point to the last two mods (#2 and 3 above)?

Thanks much!
Jon