richardkrebs

Responses from richardkrebs

Trans Fi Salvation direct rim drive turntable
Thekong.At the risk of annoying a bunch of people ... I cannot see how a pure magnetic suspended main bearing can provide the necessary loop rigidity. I doubt that it is self compensating like say a captive air bearing, so it is prone to vertical ... 
Trans Fi Salvation direct rim drive turntable
Lew.I to was alarmed with an apparently locked bearing when I received a LO7D to upgrade.There are small plastic targets on the motor coil side of the PCB. These prevent the rotor from contacting the coils when no platter is installed. The idea is... 
Trans Fi Salvation direct rim drive turntable
Lew.Just for clarity, the LO7D uses the rotor magnets to remove 'some' of the vertical load on the thrust bearing (steel ball and hard plastic). It is not actually suspended in that there is mechanical contact. That said it is a really interesting... 
Has anyone had trouble with speed on their tt
Omsed.If you are observing dynamic speed changes, greater than 1% in a closed loop system, I would suggest that the TT is poorly designed or malfunctioning. 
Has anyone had trouble with speed on their tt
Dougdeacon said..."No strobe (Timeline or otherwise) operates in short enough increments of time to detect micro-/pico-/nano-second variations. Knowing that a TT is speed stable across a time span of minutes tells us nothing about how stable or un... 
Turnable database with TimeLine
Lew.Good points raised. Perhaps I should have said "little doubt" Experience has shown that doing away with shielding, provided their is no problematic external RFI, is "almost always" better. Don't kick it too hard. 
Turnable database with TimeLine
HalcroI have no doubt that they are better au-naturel.It makes sense to eliminate this material from around the motor. Imagine the fields set up in it due to the power supply and the rotating magnets.Fields acting on sensitive analogue circuits.It... 
Turnable database with TimeLine
LewI know that it is a leap but, we have experienced problems with servo feedback systems in our, hydraulic industry.This where shielding has been inadequate. ( yes I thought of Halcro's birthday suit) while simultaneously being exposed to RFI.A f... 
Turnable database with TimeLine
LewA crude but effective test for RFI which is perhaps worth trying.If you have a portable AM radio. Tune it off station and move it around your room listening for increased static. Maybe something there that is not at first apparent. 
Turnable database with TimeLine
LewApart from static issues, which I'm sure you have considered, are there any transmitting devices near by? Something with more output than a cell phone?VHF, RT, radio ham neighbor? 
technics SL 1300 modificatiom
Boofer.Suggest you contact Bill at Music Technology. He is very experienced working with the Technics range.note: I have some commercial interest in DD TT upgrades. Thanks. 
Eminent Technology ET-2 Tonearm Owners
SlawYes I remember your post now.Thanks for that.Will be interesting to read your comments on changes, if any, with the Jun Air.Looking at these compressors on line, they appear to be very high quality.Do you or any one else have any opinions on t... 
Eminent Technology ET-2 Tonearm Owners
Dover.Sigh.... You need to read my posts properly. This is taking us nowhere.Slaw. I checked out the M-30 and M-60 filter. That is most impressive... 0.1 micron. What regulator are you using? Testing with a small amount of air bleed in between my ... 
Eminent Technology ET-2 Tonearm Owners
Dover.I quote directly from your post of 03-13-13*********On an eccentric record the acceleration will be the same for each arm – 0.0024metres / (1.8 sec x 1.8sec) = 0.00074 metres per second squaredThe horizontal effective masses of the 3 arms me... 
Eminent Technology ET-2 Tonearm Owners
Greg.Good luck with the pump rebuild.Chris has taught me the extreme importance of the air supply. A good smooth source of air lifts the arms performance considerably.