tonywinsc
Responses from tonywinsc
| Magnepan announces the 20.7 I have listened to Maggies going back to the 80's and as recent as a few months ago (with top of the line ARC gear). I appreciate their speed and their light airy soundstage. Their sound is similar to the Quad ESL's to me with the Quad's being jus... | |
| Back In the Day Good engineering is making a great product where cost is no object. Great engineering is make a great product at a reasonable price. Considering that many of us on this forum have become conditioned to expect more when we pay more, the bulk of the... | |
| Turntable speed accuracy The comment about using viscous drag or friction to dampen platter oscillations on bd tt's struck me. I do my own maintenance on my Sota tt. It is easy enough to disassemble the platter, clean and relube the spindle and bearing. I let it go for a ... | |
| Turntable speed accuracy The Timeline is giving you one data point per rotation. So what is happening in between those 1.8 second pulses? Your ears just told you something more is happening than just precise timing of the platter. It is like peeking into the room and ever... | |
| SME speed adjustment Hi Halcro,I do not quite understand how the platter speeds given correlate to the +12Hz, -12Hz and +6 Hz and -6 Hz shift from 440 Hz. 12 Hz out of 440 is a 2.73% variation. That means the platter speed must vary 2.73% as well. So I would expect pl... | |
| Turntable speed accuracy I said it once before long ago- any tt motor that brings the platter up to speed in about a half of a revolution (less than one revolution) has plenty of torque to hold speed stable.Also, I wanted to be the 300th poster on this thread. Yay!! | |
| SME speed adjustment I calculate the speed error by using the distance difference between the two timeline marks over one revolution. Using a radius of 350mm, the circumference at that distance is 2199mm. That means a 1/2", or 12.7mm per revolution drift is a speed er... | |
| Turntable speed accuracy Hi Halcro, That is excellent news. So is speed accuracy something that was once mastered and now lost on more recent tt's? How do we get it back? Do you feel you lose something with the thread drive since it drifts a bit? I would think not, but yo... | |
| Turntable speed accuracy Let me clarify my one statement a little better. Cueing up the tonearm is a one time event that may or may not cause the laser mark to move. It is not part of the cumulative error. So over the long term it has little or no impact on the results. U... | |
| Turntable speed accuracy Hi Halcro, I saw your video. It is impressive how well your tt holds speed, but that was a relatively short period of time. Can you let it run for 30 minutes to see the results over the long term? I am very curious to see those results. If the las... | |
| Turntable speed accuracy I'll ask this question again since the other post was deleted. What does everyone expect from their turntables when using the Timline device? Absolute zero drift of the laser mark? Here is another way to look at it. Leave the Timeline device on fo... | |
| Turntable speed accuracy It is actually 1.8 sec/rev. 33 and 1/3 rev/min divided by 60 sec/min yields 0.5556 rev/sec (0.555555555 repeating). Your tt makes 100 revolutions every 3 minutes or 100 revolutions every 180 seconds. So if you divide 180 seconds by 100 revolutions... | |
| Using Test LP - curious observations Remember, the skating force is generated by the torque between the stylus and pivot in the horizontal direction acting on the tonearm. This torque comes from the friction between the stylus and the vinyl. It is sliding friction and as far as I kno... | |
| Using Test LP - curious observations Nandric, I do not know for sure. Friction between the stylus and vinyl is pulling on the stylus tangential to the groove. That force is sliding friction. I do not think it is dependent upon speed- at least within a certain range. The test with a b... | |
| Using Test LP - curious observations I am an engineer. I can appreciate some of the subjective comments about anti-skate and how it affects the sound, but I want to clarify a few things here with some facts. 1) Skating force is generated by the friction of the stylus on the vinyl. Th... |