Need tips re:Michell Gyro SE setup & tweaking


Hi
I would appreciate your help in providing some tweaking tips to help me optimize Michell's performance.My previous table was Rega P25 and i'm trying to achieve the comfort level i had with it but i am not there yet.I have a Rega RB 600 arm with Shelter 501 II,Expressimo counterweight with inner spring disabled.I also upgraded to HR power supply ($900 for something that looks like $59=99)
I have a few questions:
1.Should i put coupling discs under Michell cone shaped feet
2.Should i try any mats?
3.Will upgrading to Orbe 6cm acrylic platter reduce the brightness that i currently have?
4.Should i risk enlarging the armboard for this new Vee-Tuff ($149=99) gadget that allows VTA adjustments while playing music?
5.Is it worth shelling out for a Pedersen mod and where can i get it from?
6.Is it better to level the platter with rotating spring adjustment or by rotating conical feet?
Any other suggestions and tweaks re:Michells optimising would be greatly appreciated.
overhang
Respond to question# 06. Jean Michell intended and purposely designed the table plinth with the three threaded legs for final leveling it would be nice to have all the legs snugged but designed to compensate for leveling. As a tweak tip you might also want to consider Teflon plumbers tape wrap around the male threads of three leg shafts before threading into the female opening to help decouple table noise. When leveling place a spirit bubble level on the platter to were the stylus tip hits vinyl grove, which is about half way through vinyl arc and do final adjustment as mentioned with the threaded legs only. Do not use the spring knobs to level. the spring knobs are used only for the suspension adjustment, which accordingly to instruction should be 1-2mm gap between the bottom of the plinth and the felt washer under load. That means a Heavy vinyl placed on the platter and then clamped with arm in position about half way through vinyl arc similar to VTF setup.
Hope this helps clarify question# 06.
This was my 1st TT and I worked on several upgrades over 3 yrs or so. I had the same setup with the RB600 arm. As per Fretless and Audiogalor, this TT has a a lot going for it. The only item I would disagree is with VFTA. Now I purchased the Pete Riggle VTAF adjustment designed for the RB arm. I called him up( easy to talk to ) - and he set me up with Hess Tool and Development to machine the armboard ( much less expensive than a local job in the SF Bay area ). You have to redrill the armboard to accept his unit ( and since this is aluminum it is best left to the professionals). This adjuster made a big difference in overall depth/sound as you can adjust the arm on the fly.

The second major improvement was to rewire the RB arm. I 1st tried the Incognito Rega Cable Kit - now I know others will disagree, but after I used the kit - the music seemed thin. I then pulled out the factory cable I had removed. The main phono cable/RCA connectors terminates at the base of the RB arm and then uses some lesser grade tonearm wire. I purchased the Cardas 4x33 unshielded tonearm cable - rewired the arm a second time and soldered the wire to the 4 terminals on the interface base - this was a bit of a pain. At the cart end use the Cardas tone arm clips - with very small shrink tubing along with the proper colors. I purchased most of this stuff from the Cable Co.The final result was a much fuller sound.

Lastly - I used the Michell Tecno Weight which I feel is superior to the Expressino.

This TT needs to be setup up and fine tuned to reach its total potential and should last you many years. I only sold it to play and rebuild an older TNT3. Hope this helps.
Overhang:
Congratulations on an excellent turntable. I have had a Michell Gyro in various incarnations in my system for nearly two and a half years and it has ignited the vinyl passion in me.I started with the Michell Gyro SE, upgraded to a Gyrodec which in the last 6 months has become an Orbe.Fretless and Audiogalore are spot on in their advice and response to your questions. IMHO, the Orbe platter makes a bigger difference than the PSU. You get a tighter, cleaner bottom end with the Orbe platter. Was using the Expressimo weight with a Rega RB1000 and was very happy with it. I can't really comment on the Technoweight as I have no experience of it.
A small and inexpensive tweak you could try, especially as you have some unwelcome highs is to wrap ordinary cotton wool around the springs. There should be enough cotton wool tightly wrapped around the knurled spring adjusters so that the bounciness is reduced. The best part is that if you don't like the result, its easy to undo. IMHO there is a significant improvement.
Happy listening and Enjoy