Friday, 15 February 2013

Colorsound Tremolo

This is per the original schematic, not a reissue. I made the transistor pinouts to match your basic transistors and i think that 2N5088s should work just fine in there. Original units have 2SC945s in them, so mind the pinouts and twist the legs if you want to use those.



Medferret's demo clip of his build:



75 comments:

  1. Fuck, I didn't want to build more pedals in a week or so...... I need jacks, have to build this one!

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  2. Wow. Sounds great. This one is getting built for sure!

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  3. And will fit in a 1590A, perfect, I need too a B250K 9mm too... well, it will be ready next week :P

    BR

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  4. Yeah! My first request fulfilled!

    Might need a booster afterwards.
    I'll look where I found the spot for a flashing LED on my old build and give you guys a heads up.

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  5. Almost got this working except for an annoying siren effect along with the audio. I seem to remember this happening on another trem build I did last year. What I can't remember is how I solved it! any clues, anyone!?

    Mark

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    1. Are you sure an ambulance wasn't driving passed your house?

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    2. yes, actually, it might be coming to take me away :D

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  6. I just finished this and other than the depth pot needing lugs 1 and 3 swapping it's correct. I've not got any 'siren' noise, although when I touch the depth pot you can hear an oscillation without playing anything but I guess when I put a knob on it it'll stop, it's probably grounding out - maybe this is your issue mah62? The pots would maybe benefit from being reverse log as the action seems to all be in the final third, other than that it's good to be tagged.

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    1. Here's quick demo of the finished build for anyone interested to hear what it sounds like compared to the original: Colorsound Tremolo Demo.

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    2. Thanks man! I swapped the labels and tagged it. Plus i added your demo to the post! Thanks!
      +m

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    3. This comment has been removed by the author.

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    4. I used bc549's as I couldn't find 2n5088's anywhere. No tremolo just a clean boosted signal. Would this be the problem? sorry still a newb.

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    5. Built this one again. Used 2n5088's and still nothing. What could I possibly be doing wrong? I've retraced everything. faulty pots? faulty switch?

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  7. Nice one, mate! I'm debugging as we speak, I'm sure I'm not the first person to expierence this oscillation problem. I've learnt so much reading peoples debug problems on this site that I doubt it is "my issue". When I get my head around whats going wrong on this build I'll share that with everyone and people will learn from my mistakes, so that makes it an issue for everyone. Let's keep it positive! Peace :-)

    Mark

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    1. Yeah I know what you mean, the amount of issues I've had over the last few months is unbelievable, one of the things that keeps you going is the fact that other people are having the same problems and can all help each other out. Like I said before, I was getting some oscillation noise whenever I touched the dials so maybe this circuit is susceptible to noise issues, if you want me to post a pic of my finished board so you can compare it yours I can do?

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    2. That would be really helpful, mate! The more info at our disposal the better. I have a feeling it's down to dodgy soldering or, God forbid, more faulty components. I've been over the board checking for solder bridges, bad cuts or any misplacements. When I realise the problem I'll probably kick myself! A couple of months ago, I spent 3 hours debugging only to realise I'd forgotten to put the IC in the socket! what a knobhead!!

      BTW, I'm a bit thick with all this internet stuff but how do you upload sounds, vids and pics to this site? Anyway, 'nuff of all this stuff for now, It's saturday night so down tools! Cheers, all the best :-)

      Mark

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    3. Haha, I've left a socket or two empty in the past too. There's nothing worse than realising that you've wasted the last hour because of your own idiocy then getting laughed at by your girlfriend ;)

      I'll post the photo to the forum but I've got some mates round so I'll have to do it in a while.

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    4. Yes I've forgotten to put the IC in the socket quite a few times too. I blame Fosters or vodka

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    5. Ah Vodka, the solution to, and cause of, so many problems.

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  8. Hi,

    Well, just my two cents, as I still have not put my hands on this project.

    I thought when taking a look to the circuit that the speed pot could be too big. Madferret telling that it only gets use in the last third of the pot seems to confirm this.

    I had a similar problem with a Cmat Mods Tremoglo, the blinking led (and so the sound) did not became to blink until 1 o'clock and when I opened the box, there was a 500 log pot for the Speed control, while on the pcb was written C100K.

    Chad confirmed me that there was a factory problem: the 500A was wrong... and the label on the pcb too, the pot should be a 100k lin. After swappin the pot, the Speed was usable from full CCW to CW rotation, so I think I'll build this one with a lin 100 too.

    And so, as I find very useful in tremolos, where is the best way to include a speed blinking led on this effect? Q3 collector?

    BR

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    1. Thanks for the note. I added (try 100K lin) to the corrected layout.
      +m

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    2. With this one it's more that the Fist part of the sweep increases the depth/speed really slowly and then the last third shoots up really quickly which was why I thought the reverse log may help. I'll definitely give the 100k a go tomorrow as it's a decent sounding trem when you hit the sweet spot so anything that helps get there would be excellent.

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    3. Well, had no chance to build it right now, with a B100k. Well, don't know how it works with the 250B one, but the 100K one, begins to increase speed at about 9 o clock, so I believe that this is at least a more natural behaviour.

      Depth is very slow-response too, so don't know if try a 100C or a 50A.... I think I have both tyoes, so tomorrow will tell too, but the 100B speed will stay for sure :)

      BR

      PS Had to use a 360k (348k on my dmm) as I had no 330k ones

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    4. And yeah, it sounds pretty decent, but not great. Can get a bit harsh at high depth & speed, and the slow speed is a bit fast for my taste.

      I'm very used to the Tremoglo, that for me is the best one I've ever tried, and besides con be used as clean booster, but this Colorsound will get boxed anyway, sounds good enough and can be of use for some situations.

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    5. Is the Tremoglo gooped? :o)

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    6. It's very choppy on the higher depths isn't it, like a square wave. I'm wondering if there'd be a way to mod the attack to a more gradual shoulder?

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    7. No,, is pretty clean inside. Can take pics if you want, as haven't seen the most remote reference to this circuit.

      For what I could check when I blowed a 2N5457 and swappin' the pot, i think is based on the EA Tremolo with some modifications (very usual with Chad works.

      BR

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    8. Yes that would be cool mate, if you can take a front and back pic of the board and on the image put down any values that I won't be able to make out then I'll trace it. Email them to me if you like, or you could start a tracing thread on the forum :o)

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    9. Done mate, but there are about 10-12 pics (some areas are a pain in the ass, as the ports are over there) and it's 60 megas.

      In one of the pics i've noted the trannies and caps values. Resistors will have to be noted by someone able to read codes at single sight :P

      How can i get this pics to you?

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    10. I think Hotmail has a 10M limit to attachments so you could send them in a number of emails, or maybe upload them here and send me the link:

      http://tinyupload.com/

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    11. Sent :P Hope that yor mailbox is still alive!

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  9. By the way, any sugestion about the blinking speed led? Being built in a 1590A, i intend just to include this one working both as on / tempo led.

    BR

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    1. Not sure, but you could try to take the LED resistor from Q3 collector. Check the voltage first...
      +m

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    2. Was thinking about the same. Will take a look on this point, but don't think I'd need a resistor, as the +9v comes filtered by a 4,7k resistor.

      Will take a look right now.

      BR

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    3. Well, both wrong :P It lits but doen't blink. Will have to look at some other place :P

      BR

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  10. Solved:

    +9v from upper row or +9 row to led anode. led's cathode + 1-5k resistor + wire to 3PDT switch (to the lung where you use to solder your indicator's led in other builds). Now wire from your ground lung in 3PDT to Q3 collector row (9th row at the right) and you're done.

    BR

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    1. Well,, pedal finished.

      Just one comment: for the blinkin speed led, you have NOT to put a ground wire where usual as I told before, just the one to the row of Q3 collector, just this one, and works like a dream :)

      Well, here's the new dwarf:

      http://img441.imageshack.us/img441/5329/solatremolo.jpg

      Ans yes, it fits with no "problem" in a 1590A, it could fit even being (an extreme tight fit) of 24x14:

      http://img823.imageshack.us/img823/2638/solatremologuts.jpg

      BR!

      PS. Madferret is right, this tremolo can get a very very sweet spot, in my build (B100K spped pot) it's about Depth 1 o'clock Speed: Anywhere from 9 to 3 o'clock, really cool sound there.

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    2. You're a very sick man, Javi.

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    3. Hi Javi. I tried your LED method, and it flashes in time with the speed, however every time it flashes you can hear a small thud from the amplifier. I assume it's as the LED draws current to switch on. Any ideas on a fix for this?

      Cheers!

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    4. Sure :)

      A 1uf (better if not electrolithic) cap between Q3-ground lug in the switch should help, depending on the kind of led.

      In my Pedal was not neccesary, but I've used this solution in some other ones when i need a blinking led.

      BR

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    5. @Dan Holmes, the "small thud" your heard can come from your guitar noise.. I feel it with P90 but not with silent Humbucker.

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  11. I built this and really like it. One thing to note is that using 50Kc taper pots dramatically improves the sweep on both depth and speed.
    Thanks
    Dave

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    1. Thanks for the heads up Dave. I used a 100k for speed, and I think is still a bit overkill. I'll try 50k on my next build.

      BR

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  12. I used bc549's as I couldn't find 2n5088's anywhere. No tremolo just a boosted signal. Would this be the problem?

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  13. Hi guys,

    Thanks for this, great build, Think It could be possible to change a few resistors to adjust he minimum/max speed?

    I found using B50k pots for both Speed/Depth worked the best with the least 'dead' movement.

    Thanks
    Steve

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    1. ok, just found out, that the max speed is set by the 3.3k resistor. i've replaced it with a 1.5k resistor, it's just perfect for me.

      min speed, is set by the pot value. 100k is fine, to me.

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  14. Does anyone know how I can raise the volume of the pedal? There is a 100k resistor connected to output, maybe if I reduce that? Any thoughts would be greatly appreciated.
    Cheers
    Dave

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  15. hey, i've tried built a fair amount of tremolo pedals and this one is my favourite.
    hope that someone can chime in, otherwise, I will have to spam the forum...

    mine is not fast enough at max speed, i get it that altering the speed pot value won't change anything, as fastest speed is when the pot has a 0 ohm value. so, is max speed due to the 3.3k resistor?

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    1. well, "why not try it yourself?", you should say... and you'd be right. replaced 3.3k resistor by a 1.5k resistor, perfect!

      might add a daughter board with a boost, otherwise I can't believe how good it sounds and how simple the circuit is...

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    2. and here's a build picture:
      http://imageshack.us/a/img541/7953/nnhs.jpg

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  16. Hey! Just finished building this one! It's fantastic! I just wanted to share it with you guys as it's my first build!!! So excited!!! :-)

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    1. Nice one, now go and choose your next 15 builds! :o)

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    2. Here's a quick pic http://www.flickr.com/photos/45067467@N04/12118471775/

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  17. I've already have, colorsound phazex and valvecaster ;-)

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  18. Hi guys. I'm having a bit of a problem with this build. I have built several pedals from this forum and can usually troubleshoot for myself - despite not really understanding what's going on. My problem is what would appear to be LFO bleed (I read about that in the comments of another layout on this forum). It's a very prominent percussive sound whenever the pedal is engaged. Speed varies with speed. Depth doesn't seem to change the percussive nature. The signal does trem, but I don't know if it's as designed because of the bleed. Are there any suggestions for specific areas to investigate, please? Many thanks.

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  19. Hello! I'm a beginner. Effect works fine, but the speed controller gives a short frequency tremolo

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  20. Just got around to building one of these myself. The controls work ok, while the C taper for depth would be recommended. Or a B50K could also work. I'm sticking with B100K for now.

    Other thing. I did notice a volume drop higher than can be explained by psychoacoustics. So if anyone else is experiencing the same thing, i'd suggest lowering the value of that 4K7 resistor coming from Q1 emitter to groung. I used 3K3 and it's a lot closer to unity now.

    I think i'm going to add these notes to the layout..
    +m

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    1. hey,
      i am experiencing a significant volume decrease when engaged.
      i lowered the 4k7 to 3k and still there is no apparent change in volume :\
      other then that the effect functions as expected.
      any advise please?

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    2. I'm guessing you may have something else wrong in there. Are the 18K and 330K around the Q1 ok? Are you using 2N5088s?
      +m

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    3. yeah well, i started using some testing utility i built in order the check the pedals before i solder the pots and switches.
      apparently i wired the the testing utility wrong, so the input was the out put and out put was the input.

      after plugin it correctly it works fine now, sounds great :D.
      and consequently also another pedal i was building works now :)

      thanks allot this is my favorite pedal so far :)

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    4. I tried putting a 5k pot in place of the 4k7 resistor and it worked great as a volume adjust... It gives the trem a little more growl with it turned all the way up, but not in a bad way. It hasn't fried anything yet, maybe it will, but nice to have a little adjustment on the fly.

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  21. hi guys,
    i built this pedal a while ago and i started having problems with it.
    some times the signal would pass Through the pedal but with no effect,
    i used to reconnect the 9V supply and that would usually fix that.
    the problem escalated and now, no matter what i do, the pedal almost never works.
    any one got any ideas ?
    has anyone else experienced relatively long term problems with this pedal ?

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  22. Hi guys,

    Has any one got the schem for this version? I can only find one with 3 trans. Thanks!

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  23. guys i have a clicking sound problem in my build (heartbeat sound)... is it because my caps are all mylar? or is this normal? only occur when depth pot is on 0.. please help...

    https://www.youtube.com/watch?v=mMJTMdnjeHo&list=UUxjtWj3OGeV9zsNUVbmtzXg

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  24. just wanna share my build :D im so happy with this and i will definitely use this for my gigs
    credits to the maker of tagboardeffects.blogspot.com, IvIark and mirosol!!!
    -vahnrondel from philippines

    https://www.youtube.com/watch?v=dpePntGB75Q

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  25. Hi.i am new here and i have to say that this is a great site.i 've made 4 pedals with your help.great work!i am having trouble with this one.just like Corey i used bc549 and i have a clean slightly boosted sound but no effect.it still sounds even if i remove the pots.i checked everything and it's driving me crazy.please help.i really wanna built this one...

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  26. Still nothing. Any ideas would be helpful. Is it possible that the bc's causing the problem?

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    1. Someone else above seemed to have the same problem using BC549s too, maybe track some 5088s down and try them instead?

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  27. tried several times and got nothing ..maybe a bad solder tip?

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  28. I used bc549's with no problems so it shouldn't be the transistors.

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  29. Just finished building this. Several notes: if you're having oscillation with this, make sure it's not your power supply. Mine is pretty noisy and creates this goofy up and down oscillation with the pedal. Battery is quiet. If you're still having issues with the clock noise, a buffer before the Tremolo would probably help.
    I don't quite know if it's just my circuit but at highest speed setting the depth just disappears. I did change the 3.3k resistor to 1.5k for more speed though. I guess the wave might just be getting crushed too much. Same happened with small clone chorus and the ultra fast speed mod...
    the rate led is easy. Just connect led's + to q3 collector (one row above the 470nf cap at the bottom right) and the ground of the led anywhere you'd like. I put mine to the footswitch. Not all LEDs seem to work though. I found 5mm blue and white to work best, so just experiment yourself. It seemed like it worked better with a current limiting 2k2 resistor. Alligator clips are your best friends in this situation...
    In any case, a great build, the pots seem to have all the action at the very end so might be better to use anti-log pots. I simply used b100k for both. Too lazy to change it now hah.

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    1. I was waiting for this post!!!

      Thank you so much for sharing this KOLIZIJA...
      will definitely do this!!! we have same situation, the depth disappears on full speed only when the rate LED is connected...
      but works fine when rate LED is removed...

      I used a bi-colour LED for the rate and on/off indicator

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  30. I built this pedal and mod it
    It's my first tremolo, It's a good one, very quiet, and fun gear.
    But mine work only if I reversed Q3.
    Is there any error on schematic ?

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