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:
Fuck, I didn't want to build more pedals in a week or so...... I need jacks, have to build this one!
ReplyDeleteWow. Sounds great. This one is getting built for sure!
ReplyDeleteAnd will fit in a 1590A, perfect, I need too a B250K 9mm too... well, it will be ready next week :P
ReplyDeleteBR
Yeah! My first request fulfilled!
ReplyDeleteMight 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.
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!?
ReplyDeleteMark
Are you sure an ambulance wasn't driving passed your house?
Deleteyes, actually, it might be coming to take me away :D
DeleteI 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.
ReplyDeleteHere's quick demo of the finished build for anyone interested to hear what it sounds like compared to the original: Colorsound Tremolo Demo.
DeleteThanks man! I swapped the labels and tagged it. Plus i added your demo to the post! Thanks!
Delete+m
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 :-)
ReplyDeleteMark
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?
DeleteThat 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!!
DeleteBTW, 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
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 ;)
DeleteI'll post the photo to the forum but I've got some mates round so I'll have to do it in a while.
Yes I've forgotten to put the IC in the socket quite a few times too. I blame Fosters or vodka
DeleteAh Vodka, the solution to, and cause of, so many problems.
DeleteHi,
ReplyDeleteWell, 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
Thanks for the note. I added (try 100K lin) to the corrected layout.
Delete+m
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.
DeleteWell, 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.
DeleteDepth 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
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.
DeleteI'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.
Is the Tremoglo gooped? :o)
DeleteIt'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?
DeleteNo,, is pretty clean inside. Can take pics if you want, as haven't seen the most remote reference to this circuit.
DeleteFor 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
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)
DeleteDone 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.
DeleteIn 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?
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:
Deletehttp://tinyupload.com/
Sent :P Hope that yor mailbox is still alive!
DeleteBy 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.
ReplyDeleteBR
Not sure, but you could try to take the LED resistor from Q3 collector. Check the voltage first...
Delete+m
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.
DeleteWill take a look right now.
BR
Well, both wrong :P It lits but doen't blink. Will have to look at some other place :P
DeleteBR
Solved:
ReplyDelete+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
Well,, pedal finished.
DeleteJust 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.
You're a very sick man, Javi.
DeleteSweet madness :P
DeleteI 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.
ReplyDeleteThanks
Dave
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.
DeleteBR