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Average rating:
4.4 out of 5
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The polysix was my First Analogue and is still my absolute favorite allround analog. It can do mostly everything, except for those ultra-fast bleepy technolines. The other reviews here says most, but I got some comments which may come in handy: The most important thing: get rid of the battery!! It *WILL* leak and cause silly faults in the CPU which controlls EVERYTHING in the synth. The battery is in the far left end of the mainboard in the middle of the synth. It looks just like any battery, just fater. Simply desolder the battery and add some wires and put the battery where it is space for it. Mine is in a little bag next to the transformer. The effect section can easily be modifyed to add direct out from the synth-section and external input/output to the effect. The effect-board are the brown to the left and are almost as big as the other 2 boards. It has 4 connectors, one fat at the left which is for controll purposes and 3 at the left top. One are for the power suply and should be left alone. The other 2 have neat little labels named "in" and "out". The connectors are 3-way but do actually just carry 2 wires, one for signal and one for ground. So the trick is: drill 2 holes in the back of your polysix, one for synth out and 1 for effect in. Use standard 1/4" jacks. Take the wires that goes to the input socket at the effectboard and clip it, the part comming from the synth section goes to the synth out jack, the other part comming form the input at the effect goes to the effect in. And so the normal audio output is now the effect-output. Voila! Now you can finaly try feeding the phaser...It sounds terrific!! And the synth-sounds are much cleaner and have a lot of treble missing in the effects. The problems with this mod are: the VCA are at the effectboard, thus you get no VCA and the VCA-controll affects wathever goes thru the effect. The effect HAS resonance which you controll with the resonance pot in the VCF-seciton, although it doesn't do much to the sound.. Do not do this unless you feel comfortable with a drill and solderiron... ;-) There's a lot of other funny things to do with the synth, the electronic design are quite easy to read(with the service manual) and a lot can be added and modded. The LFO can be made to oscilate at any frequency by replacing the timing capacitor, which gives you the ability to do those nice FM-sounds. Both the main-LFO and the PW-LFO(and ofcourse, the VCO's) are temperature compensated and ultra-stable. The PW-LFO can be assigned to the VCF or whatever and external PWM can just as easily be achived. Nice DIY!
About the arpeggio-trigger: the trigger is not a trigger, it is actually the same concept as a standard foot-switch. The tip sends 5v out and when you short-circuit this to ground(the sleeve) you trigger the synth. If you apply a standard 5v positive trigger it actually triggers on noteOFF. Don't care to explain, but that's what happens. To trigger it in a proper fashion you need a so-called S-trig(shorting-trigger?) which short-circuits the wires and thus trigger the synth. A normal trigger(ie. rimshot or other short burst of noise) to S-trig can be made of *1 transistor*. Yep! Just connect the ground's of the trigger and s-trigger cables, put the trigger to the base of the transistor and the s-trig cable to the collector. The emitter goes to ground. What happens is that when the trigger goes in to the base it opens up the transistor and let the s-trig go to ground. Sounds scary? Find a geek(like me) and show him this note and he'll understand. ;-) There's a lot more to say..... Feel free to email me! Andreas Nordenstam lupo_@hotmail.com Bergen, Norway
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