richardkrebs
Responses from richardkrebs
| Direct drive vs belt vs rim vs idler arm Dover. I tried to get out of this thread by offering an olive branch since I sense that we are going nowhere.... oh well.The argument that servos cause overshoot followed by a period of slowing and then repeat does not hold up to analysis. This pi... | |
| Direct drive vs belt vs rim vs idler arm Gentlepeople The problem with posts like this, where a difference in opinion is being aired, is that there is a tendnacy for us to talk past eachother and place significance on things that are written outside of what the author meant. This is perf... | |
| Direct drive vs belt vs rim vs idler arm 1) The Final has been shown, through your own testing, to slow down due to stylus drag.....end of story2) You are quite right, the Final has much higher intrinsic resistance to stylus drag than the other TT's mentioned...if you assume that the oth... | |
| Direct drive vs belt vs rim vs idler arm DoverNo inconsistency at all. I have repeatedly said that there are many paths...,Obviously within each family of drive there is bad and good engineering design. Further I have tried to be as generic as possible in my posts. I mentioned the Goldmu... | |
| Direct drive vs belt vs rim vs idler arm GentlepeopleA simple dynamic load test you might want to try if you havent already done so, is to hold your finger against the rotating platter while playing music. No strobes, timelines needed just your ears. Can you hear a speed change?How much ... | |
| Direct drive vs belt vs rim vs idler arm Ct0517You are quite right, I should have said "Motor/Controller"Many thanks | |
| Who needs a MM cartridge type when we have MC? Timeltel.Great to read that you are embarking on a plinth/pod journey.This is great fun and really frustrating all the same time.You don't specifically state what material you are using? It is some time since I put together my plinth and I am inte... | |
| Direct drive vs belt vs rim vs idler arm Gentlepeople. Isn't this an interesting thread.Ct 0517, that was a great video. Thank you for sharing it with us. Good to see what a well engineered closed loop speed control can achieve. It was also interesting how fast the high inertia platter s... | |
| Direct drive vs belt vs rim vs idler arm DoverYes we are measuring an error and correcting it before it gets worse. This is the old argument about feedback correcting an error that has already passed. The nature of this feedback and the torque/ platter moment are critical here. The motor... | |
| Direct drive vs belt vs rim vs idler arm Jazdoc I agree totally with you. There are many other important parameters that must be addressed in a TT designTo state the obvious. A complete TT assembly including arm and cart is a machine that measures tiny movement with respect to time. Over... | |
| Direct drive vs belt vs rim vs idler arm GentlepeopleI have not used the timeline but understand that if a TT was to say AVERAGE 33 1/3 rpm over a LP side, it would pass the timeline test. Am I correct in my assumption?If so we can easily discount any TTs that are not averaging the corre... | |
| Who needs a MM cartridge type when we have MC? In_shore. Thank you for the contact. I will see if I can track Richard down. I have found damping to be a Pandora's box. It needs to be applied judicially. It is so easy to go too far. Yes I agree that there are many other materials of merit to ch... | |
| Who needs a MM cartridge type when we have MC? Lewm . My two cents worth. I have been building TTs for over 30 years now. Some have been disastrous and some ok and only a few were goodPlinth materials have been. Slate, concrete, aluminum, MDF, hardboard and finally acrylic using lead in a CLD ... | |
| Technics SP-10 mkII speed adjustment question SonofjimThankyou for your positive comments regarding my upgrade. It is gratifying to hear that you like the results. Bill does a great job implementing the changes. The upgrade is a complete rethink about how the motor itself works and is indepen... | |
| Technics SP-10 mkII speed adjustment question AlbertThank you for clarifying this. You are quite correct, only Bill and I know how to do the Krebs upgrade. |