@Adriatic posted:I think the Z-1k is also a chopped wave fyi. Pure sine is more important than a mfg. label matching up on PS1
I recall my brother saying that about his, and my buying a KW for him that he used for a while. He was mad as a hatter too. His early mth experience wasn't all that great, but he still prefers it.
I, on the other hand, am amazed at how many "down engines" he put up with and still loved it.
I liked that PS-1 history breakdown @DdotCdot . I don't think Ive seen that before. It helped me put brothers MTH issues into better perspective overall. It was the #2 PS-1s that held all the issues for him from what I can tell.
Correct. That’s exactly right. “Gen. 2” PS1’s are the only ones that will not get moving with chopped power. You must use pure sine with those, period. These are from 1995 (mostly) and introduced reset 18. These normally require a battery just like later Gens.
”Gen. 1” PS1’s will cycle direction with chopped wave form power - but getting reliable whistle or bell or coupler response is like pulling teeth without pure power. These are from 1993-1994 and used the battery strictly as a “back-up” system, but did not rely on the battery to shift out of RESET mode. You can safely run these without a battery, but your sounds will cut out during power cycles without one.
A lot of this all boils down to what chip set you have in your boards. It’s the chip and the software version burned into it that typically dictates the behavior. Clearly QSI was making all sorts of revisions and improvements in the chips over at least the first 5 years of development. They finally got it all right by about 1998
-I don’t have any hard facts on this, and strictly go by the thousands of PS1 engine boards I’ve seen over the last 5 years (yes, I’ve seen every single PS1 engine by now), but it’s been enough experience to see that chips had approx four major revisions, bottom boards seemed to have changed about three times, and top boards seem to have gone through about five or six silent iterations with very minimal changes.
