Korg Forums

The fact that I have only see a small handful of these amps in evidence and the total lack of information available leads me to believe that not many were manufactured and sold. They are good solid amps for a moderate volume level. My belief is they were an experiment that basically went nowhere. I ...

Ok...I will post my own reply. It's mid-september and it's crickets (or more likely cicadas) In the meantime, I found one SM-75 on a Japanese auction site, won the bid for $17 USD (2100 Yen), and spent $160 USD (20000 Yen) to get it shipped . It works just fine but needs a step-down transformer ...

Looking for a Korg PM 30 keyboard amplifier / monitor. Any condition. This is the baby brother to the SM-75. I might possibly be interested in a SM-75 also, but it is mainly the PM-30 I am looking for. Both pictured here. PM-30 is the single speaker unit http://www.korgforums.com/support/brochure/SM ...

This is an expansion on a previous post in the "testing this forum" category, I submit this here because it is synth related and there appears to be nowhere else to post it. That being stated...I am referring to the mysterious SM-75 and the little sibling PM-30. Both are vintage 1985. http://www ...

Hi...first post and not sure exactly where to put it... Anybody have one? or seen one in a pawn shop, etc.? Sure would like to get more info, and a schematic would be pretty fabulous... I have one of each of these rare birds. I think they are great amps...I use the SM-75 on a gig. They are virtually ...

When there are non-working keys in a specific pattern such as that is, the problem is most likely to be in the ribbon cables that connect to the key bed. Open it up and check that all wires in those ribbons are securely seated and clean on both ends. It's possible that one wire might not be where it ...