Arty, I hope you get this message as the thread is old I have s Spectral system as well, started in Chicago in the late 90's I replaced the DMC 12 with DMC 30 SS on audiogon. and replaced my 750 cables with 770's series 1 about 9 years ago. I see a pair of 770 cables series two for sale. Since I live in an audio wasteland here, no chance of auditioning. Did you upgrade to speaker cable 770 series 2? Is it worth the upgrade? They are asking 1500 for them.
Thanks, Robert in Atlanta.