Phoenix Engineering wrote:Others in this industry have discovered what a proper belt drive system is capable of. In time, the rest of the field will follow or get left behind.
Well stated Bill. The three-phase drive is definitely the future. All that remains to happen in order for this to become accepted industry best practice is for Ivor Thiefenbrun

to learn of this and then convince himself that it was all his very own brilliant idea and add the requisite number of zeros to the price of the technology.
Everything revealed during the protracted series of listening tests during the development of my Turntable Control Instrument pointed to the fact that the three-phase approach as being inherently superior.
I made a commercial decision to release the synchronous only implementation initially in order to people, even those without much technical prowess, to extract the maximum sonic performance from their existing turntable, as did you.
Fortunately, because we designed the waveform generator board to provide biphase drive for two motors, with precise control of the phase relationships between all four waveforms, it makes developing a three-phase output module, fully compatible with the existing hardware largely a firmware issue.
My plan is to develop a three-phase output module to complement the existing range of interchangeable modules. At present, while we have identified what we believe to be a workable chipset and some candidate motors. there is still a lot to do do, but I hope we can begin field trials in the next couple of months. I'm hoping to keep the price of the three-phase upgrade to around $US300 plus motor. In order the address the value concerns of Linn owners, we also make the same module available for $US3000.
Stay tuned!
Steve