82nF (ic2) should be 8,2nF ? 27nF from 10 Ohm to ground(spektrum 2)? It sounds but not ok, I hope we can get it right, Thanks for all other nice layouts👍
This is an extremely cool overdrive. I tweaked it a bit cause it did not sound right from the very beginning. There are a few changes to be made to the stripboard in order for this circuit to work properly. Here are the suggestions:
1. move 820R from T3 to S3 (I soldered it to the jumper P-S3) 2. remove 10R from K-N17 3. move 100n from K21 to H21 4. unsolder 10R at H22 and insert 100n in series to H22 5. insert 10R + 27n in series between K21 and GND (N18).
With these changes mine works great. It has a lot of mids and lows, which I really like. The OCD pot is not my favourite, I keep it at minimum. I play humbuckers not single coils, the OCD may be useful on single coils, depending on what sound you want to achieve and what genre you want to play. To me it cuts sustain which I do not to my liking. Cheers!
Okay, I have sound now, but the ODC control is causing an LED to light up. I'm pretty sure I have it connected right, I'm going to step away and pull the schematic to see if I can fix it
Okay double check the OCD area, the 1K resistor colmun 2 row 16 to row 20 (P to T) with that in place there is 5v on the ODC pot and it lights an LED I couldn't find it in the schematic and now it works with that removed.
I got it to work and sound pretty good. There are errors in the layout posted 10/28/01
Here are all the steps I took 1) Remove the 1K resitor between ODC 2/3 and ground (Column 2 row 16 to 20)
2) replace the 82NF cap at the ground of IC2 with a 10nF cap (I didn't have an 8.2, 10 makes it much brighter, may be better with a 15nf or maybe 22)
3) Rework the connections on Spectrum 2 to match the schematic a) Replace the 100nf cap on spectrum2 with a 10 ohm resistor b) replace the 10 ohm resistor connecting spectrum 2 to the 8.2nf cap with a 100nf cap c) add a 27nf cap between the 10 ohm resistor and ground that is attached to the 10 ohm resistor attached to spectrum 2
Without that last change the spectrum pot would make strange noises and cut out when maxed.
There may be other changes to make it match 100% to the schematic, however with the changes I made everything works just fine and sounds like a more flexible ODR1
I know making these layouts isn't easy, and I do appreciate all your hard work. I've built quite a few of your layouts and this is only the 2nd one that didn't work right away. The other was the Ghost Echo. Both were unverified at the time!
Thanks for spotting those errors and making the corrections. Yes, sometimes there is some "oopsies" so all help is appreciated to make the layouts work as they should.
I'm gigging this circuit (with my corrections) in a week.. Folks this one is a keeper if you play a T-style guitar. Heck I bet it can even make a shrill strat bridge pickup sound great...
82nF (ic2) should be 8,2nF ?
ReplyDelete27nF from 10 Ohm to ground(spektrum 2)?
It sounds but not ok, I hope we can get it right,
Thanks for all other nice layouts👍
There are a few errors there that need attention.
DeleteThis is an extremely cool overdrive. I tweaked it a bit cause it did not sound right from the very beginning. There are a few changes to be made to the stripboard in order for this circuit to work properly. Here are the suggestions:
ReplyDelete1. move 820R from T3 to S3 (I soldered it to the jumper P-S3)
2. remove 10R from K-N17
3. move 100n from K21 to H21
4. unsolder 10R at H22 and insert 100n in series to H22
5. insert 10R + 27n in series between K21 and GND (N18).
With these changes mine works great. It has a lot of mids and lows, which I really like. The OCD pot is not my favourite, I keep it at minimum. I play humbuckers not single coils, the OCD may be useful on single coils, depending on what sound you want to achieve and what genre you want to play. To me it cuts sustain which I do not to my liking. Cheers!
Thanks fuzzhead for the layout.
DeleteI've no idea what you are talking about with your changes.. none of the rows match what is there now
DeleteThis comment has been removed by the author.
ReplyDeleteThis comment has been removed by the author.
DeleteOkay, I have sound now, but the ODC control is causing an LED to light up. I'm pretty sure I have it connected right, I'm going to step away and pull the schematic to see if I can fix it
ReplyDeleteOkay double check the OCD area, the 1K resistor colmun 2 row 16 to row 20 (P to T) with that in place there is 5v on the ODC pot and it lights an LED I couldn't find it in the schematic and now it works with that removed.
DeleteI'm finding a few errors (perhaps) that may cause this to sound so muddy. there are a couple of filter areas that need some attention
DeleteI got it to work and sound pretty good. There are errors in the layout posted 10/28/01
ReplyDeleteHere are all the steps I took
1) Remove the 1K resitor between ODC 2/3 and ground (Column 2 row 16 to 20)
2) replace the 82NF cap at the ground of IC2 with a 10nF cap (I didn't have an 8.2, 10 makes it much brighter, may be better with a 15nf or maybe 22)
3) Rework the connections on Spectrum 2 to match the schematic
a) Replace the 100nf cap on spectrum2 with a 10 ohm resistor
b) replace the 10 ohm resistor connecting spectrum 2 to the 8.2nf cap with a 100nf cap
c) add a 27nf cap between the 10 ohm resistor and ground that is attached to the 10 ohm resistor attached to spectrum 2
Without that last change the spectrum pot would make strange noises and cut out when maxed.
There may be other changes to make it match 100% to the schematic, however with the changes I made everything works just fine and sounds like a more flexible ODR1
I know making these layouts isn't easy, and I do appreciate all your hard work. I've built quite a few of your layouts and this is only the 2nd one that didn't work right away. The other was the Ghost Echo. Both were unverified at the time!
Thanks and great job on having so many layouts!
Thanks for spotting those errors and making the corrections. Yes, sometimes there is some "oopsies" so all help is appreciated to make the layouts work as they should.
DeleteI will correct the layout in a couple of days.
Doh!
DeleteIt urns out I didnt'r saved the finished layoút on my hardrive.
So I need it draw it from scratch...
I'll report back when it is finished.
Dumbass...
I'm gigging this circuit (with my corrections) in a week.. Folks this one is a keeper if you play a T-style guitar. Heck I bet it can even make a shrill strat bridge pickup sound great...
ReplyDeleteJust a slight poke for that corrected layout ;-)
ReplyDeleteI just noticed that the LED's are green in my 30th anniversary edition. It makes a bigger difference compared to the Reds in my original one.
ReplyDeletemy testing between red and green LEDs show very little noticeable (or measurable) difference.
DeleteIt’s not a huge difference, but having compared the two production models it is there.
Delete