TR-606 DIY part 2: FROM TOM TO 909 BASS DRUM -------------------------------------------- The tom PCB is separate from the main PCB - it is located between the tempo and volume controls, which are clearly labelled on the board. The first thing to do is to switch off the noise source; this is done by locating the grey wire that has the 'noise' written beside it. Cut this wire in half. The high tom must also be turned off, otherwise everytime a bassdrum sweep is initiated a high tom sound will play [this is only to be done if you performed the bass sweep mod or are going to perform it - ed]. You will see on the tom board that there are three wires together labelled TRIG, HT and LT. Cut the one labelled HT. The high tom is now turned off. Next, solder a .22uF electrolytic capacitor across the back of C303, making sure that the polarity is correct. Now solder a 12 ohm resistor across the back of R323, then connect up the two 1 meg pots and the two resistors as shown on diagram 2 (dia2.GIF). Your low tom will now sound like a 909 kick drum.