I had this exact problem with my Rega 25 and VPI SDS. I found that if I gently help the turntable platter gain speed (on startup) by gently turning the platter by hand--giving it a gentle shove--the SDS will drive the Rega 25. I guess the SDS doesn't have the power to overcome the inertia of the platter at startup; but once the platter is spinning, the SDS drives it without further problem. Without doing this procedure my Rega would sometimes play at a speed below 33.
VPI SDS help
I bought a VPI SDS here on Audiogon for my townshend rock 7 turntable. According to my research The rock 7 is ac motor 110 volt.
I installed the SDS with the TT but the TT motor is spinning very slowly at the 33rpm setting. I changed the default sds voltage from 72 to 115 but it's still slow and increasing the frequency from 60 to 65 did not get it working right either.
Am I doing something wrong or does the SDS not work with this TT
I installed the SDS with the TT but the TT motor is spinning very slowly at the 33rpm setting. I changed the default sds voltage from 72 to 115 but it's still slow and increasing the frequency from 60 to 65 did not get it working right either.
Am I doing something wrong or does the SDS not work with this TT