Home Forums Help/Technical Questions Small Stone v2 (rev. J?) volume drop mod?

Viewing 10 posts - 1 through 10 (of 10 total)
  • Author
    Posts
  • #78199
    devnulljp
    Participant

    I have a v. 2 small stone — issue J board, red noodle logo like this one:
    ss_us_v2s.jpg
    I’d like to fix the volume drop (and maybe TB it, but that’s another thread).
    The mod here is for the later v3 I think.
    I found some info here that talks about my v.2 — issue J — and a schematic
    But, how do I identify the correct resistors to change? (I’m not very good w/ schematics).
    Here’s a pic of the board (clickable thumbnails if you’re so inclined):
    bottom side
    th_ss_us_v2_board_bot.jpg
    component side
    th_ss_us_v2_board.jpg

    So, which resistors do I pull? How do you tell? (I can tell the values of the resistors using this conversion chart, but how to find the right ones?

    The first link says: “The mod is comprised of 2 resistor value changes. The first is changing the R6 position resistor from 5K6 to 10K. The second change is the R27 position, that changes from 2K2 to 5K6.” — But I thnk that’s for a different board.

    The second says: “Changing R42 from a 4k7 resistor to a 10k resistor / Changing R11 from a 3k3 resistor to a 10k resistor

    Which ones are R42 and R11?
    Thanks

    EDIT: Never mind, found it: http://www.generalguitargadgets.com/pdf/ggg_smallstj_lo2.pdf

    th_ss_us_v2_board-1.jpg

    #105745

    Hi I tried this mod. Same version Small Stone, replaced the R11 and R42 with 10k resistors. Now when the pedal is engaged the volume is even lower?? Plus, my sound is a little dirty, when the pedal is engaged, it is a clean phase sound. Any idea?

    Thanks,

    Justin

    #105713
    SanquiFlerb
    Member

    it’s easy to read a schematic. at first glance, it seems impossible. you must pick up a reference point. But to know which resistor is, the schematic must say it. if not, well, it’s kind of impossible. hang on, I’ll try to help a little bit

    edit. ok, some one revived an old thread… well if the volume is even lower, use a smaller resistor instead of a larger one.

    #102169

    Ah ok. I put the resistor in the wrong place. Ugh. Newbie. One question. The 1.8k resistor is pretty bad and not really reusable. I couldn’t find the same 1.8k resistor in Radioshack. What would happen if I put a 1k resistor in its place?

    #102161
    Mr.Grim
    Member

    the replacement shouldent make a difference, if it sounds fine then its al good, you can usualy substitiute with a value very close to the original.

    while were on the topic, does anyone have this volume mod for my V1 Small Stone? all tho im still not sure if i want to mod my V1 still, its in perfect original condition.

    #107851
    bigdakota
    Participant

    Now I’m wondering, what wattage resistors? 1/8 or 1/2 watt?

    #107697
    Mr.Grim
    Member

    i think there usually 1/4 watt, but i may be wrong

    #107665
    SanquiFlerb
    Member
    Quote:
    i think there usually 1/4 watt, but i may be wrong

    1/4 is fine.

    #105513
    bigdakota
    Participant

    Ok, well I give up on this mod. I put the same value resistors back and it still is now lower in volume. I don’t know what could possibly be causing this.

    #104882
    SanquiFlerb
    Member

    bad/cold soldering?

Viewing 10 posts - 1 through 10 (of 10 total)
  • You must be logged in to reply to this topic.