richardkrebs
Responses from richardkrebs
| 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. | |
| Eminent Technology ET-2 Tonearm Owners Dover."yet again you miss quote me"I think not. See your post 03-13-13. Where you go to great lengths to show, incorrectly, that when tracing eccentric records, my arm is 300% heavier than a standard ET2. The leaf spring is inactive at eccentric r... | |
| Eminent Technology ET-2 Tonearm Owners Dover.Up till recently you have been telling us all repeatedly that the counterweight decoupling spring is active at eccentric record frequencies and that at these frequencies my arm is up to 300% heavier than a standard ET2. We now all know that ... | |
| Eminent Technology ET-2 Tonearm Owners Frogman.Look to the other end of the arm and compare the counterweight attachment. If you are using a low compliance cart on an ET2, this is the main cause of diminished bass extension. Calculate your FR using the ET2 manual formula. Around 7Hz or... | |
| Turnable database with TimeLine Don.re your post to Lew. "Nobody has used the timeline.... and detected any audible sonic changes."Firstly. The time line shows average speed per revolution. A TT that passes the timeline test has a "consistent average" correct speed, no more than... | |
| Turnable database with TimeLine Dover,Less than 0.3 seconds servo response came from observing current draw modulation in the kHz range, in sync with the music being played. The test was done with the system muted and live to check if it was some sort of acoustical feedback phen... | |
| Turnable database with TimeLine Actusreus.Re my last post and tracking progressively towards the center grooves.For clarity, I should have said it progressively becomes less slow as the torque demand decreases.Lew The servos we use at my work can have response times in the micro... | |
| Turnable database with TimeLine Actusreus. Assuming 1)the stylus drag is constant throughout the LP 2) the TT slows due to stylus drag,3) speed control is open loop ( maybe) Then it will naturally increase in speed as it tracks towards the centre grooves.This is a torque moment ... | |
| Turnable database with TimeLine While I agree that it would be best for every test to use the same LP, this is likely an unrealistic requirement since it presupposes that every tester has this disc. Futher " The sum total of the error at the end of the test would be truely compa... | |
| Turnable database with TimeLine DonI don't think that any of us are claiming perfection. Well maybe one of us is. But we are, most of us, on an impossible quest for same. Religious? Maybe a substitute, but it is a whole lot of fun. Given the manyfold problems of vinyl playback, ... | |
| Turnable database with TimeLine Lewm8 feet to the wall, that is a tough test.Don_c55I understand your skepticism, but would argue that these micro speed changes are indeed audible.Sure we have tape machine speed instability along with eccentricity problems. That said, speed chan... |