Hi!
"This is the Part 2 of the link below :
http://www.circuitbenders.co.uk/forum/index.php/topic,2029.msg13085.html#newPitch mod:
On the DD series the pitch works differently from the common "pitch bend" we are used to find on other lo-fi devices where usually the pitch and the tempo change simultaneously.
Yamahas DD have 2 different pitch mod (i did it on DD6/8/11)
Pitch shift-The octave goes from hi to low without alterate the tempo-
Pitch bend-Both octaves and tempo change simultaneously-
I've divided the line out of the ltc1799 in 2 wires and connected the 2 wires on 2 different points:
One controls the Octave and is usually a green/brown Capacitor next to a 2nd small blue xtall
(note that I've soldered my wire to cap as the 2nd Xtall was too close to the board)
The other bend point is on 1 of the legs of the xtall
The cap controls the octave the xtall the tempo
Connect the 2 wires to it and add all the required components.
On the DD8 i have it with 2 switches and a potentiometer.
(this mod should also work on SK5 and probably other devices)
Beat randomizer:
There are few points on the ic1 that can be work out with lfo I've chose the more Representative 1 and installed.
I added to it on/off switch+PBotton.
I've also added 3 bends related to it,that are not sound changing.
The all 3 with switch and PBotton.
Sound bends:
Those are located on the ic3 and are easy to find.
I've chosen a combination of 6X6 and mounted them on 2 rotaryS once again with switches and PBottons in order to increase the "userfriendliness"
I didn't do anything really technical but just select those of my taste.
Bass & Bleeps:
There are plenty of body contact on DD8/6
Those can be work out with a Potentiometer to fade the volume
I've chosen 5:
1 with lower octave
Potentiometer/switch/PBotton
4 with high octave
Rotary/potentiometer/switch/PBotton
Modulation:
"A Vactrol is the marriage between an LED and an LDR"
I always look for some and connect them inside to give the wobblesound-movement.
then i expand them using switches/PBottons/and potentiometers in order to control the depth.
Those 5 modifications have been fine tuned with resistors and everything needed in order to have a reliable lo-finess.
There are different way to connect bends and is always good to give it a go your way/your taste...
DD 6/8 seems to be quite strong and are a good field to experiment a b..just be careful to not catch strange voltages.....
Stay on the right side of the Board and DO NEVER poke around after the voltage regulator (TR1) if you don't wanna fry it!
Enjoy
A.I.Project-Yamaha DD8-Supamegabeatlofiness-