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Turntable speed accuracy

There is another thread (about the NVS table) which has a subordinate discussion about turntable speed accuracy and different methods of checking. Some suggest using the Timeline laser, others use a strobe disk. I assume everyone agrees that speed accuracy is of utmost importance. What is the best way to verify results? What is the most speed-accurate drive method? And is speed accuracy really the most important consideration for proper turntable design or are there some compromises with certain drive types that make others still viable? Peterayer  (System | Reviews | Threads | Answers | This Thread) 11-09-11

Responses (351-400 of 573)

Click title to read one, or click date to read all below it. 01-24-12   The timeline is giving you one data point per rotation. so ...   Tonywinsc 01-24-12   Thanks tony, a perceptive and illuminating commentary :^)   Halcro 01-24-12   Halcro, great info and thanks for sharing. what you have men ...   Dev 01-24-12   Dear dover: about thread/high mass platter my as are not rea ...   Rauliruegas 01-24-12   halcro, i can't think of a reason for a bearing to provide ...   Atmasphere 01-24-12   Use of a capstan, etc, or any strategy that increases the ar ...   Lewm 01-24-12   what style bearing is in the raven? i remember reading abo ...   Ketchup 01-24-12   There are a couple of different bearings used in this table, ...   Dev 01-24-12   Dear halcro: you always can try a different thread's build m ...   Rauliruegas 01-24-12   Halcro - great game eh. looks like dokovich has shown the ot ...   Dover 01-24-12   Lewm, that is a good point about belt contact with the plat ...   Peterayer 01-24-12   Hi peterayer, i had mentioned in the nvs thread i had test ...   Dev 01-24-12   Hello dev, yes, i had read that now deleted nvs thread, but ...   Peterayer 01-24-12   The concept of "belt creep" and what to do about i ...   Lewm 01-24-12   Hi ralph, that's a quote from peter moncrief's incisive arti ...   Halcro 01-24-12   Same model as yours which was also too fast ironically, the ...   Dev 01-24-12   Hi lewm, but using a mylar belt has it's own issues. static ...   Dev 01-24-12   Unfortunately bringing the motor closer to the platter also ...   Sarcher30 01-24-12   The comment about using viscous drag or friction to dampen p ...   Tonywinsc 01-24-12   it also results in less contact between the belt and the mo ...   Ketchup 01-24-12   Good point ketchup. the belt is more likely to slip on the c ...   Sarcher30 01-24-12   not what i wanted to read. i hate this thread. seriously: ...   Banquo363 01-24-12   i believe there are trim-pots inside the chassis that can va ...   Hiho 01-25-12   Banquo363, yes unfortuantly. i was told he is sending it t ...   Dev 01-25-12   I agree with atmasphere. turntables with excellent soundsta ...   Aoliviero 01-25-12   perhaps you should listen to a good dd turntable with a core ...   Halcro 01-25-12   Dev, the lenco is pretty near infinitely adjustable, as the ...   Lewm 01-25-12   Lewm, have been reading this for awhile and want to as ...   Uru975 01-25-12   Dear uru, i am not the font of all knowledge on this subject ...   Lewm 01-25-12   Thanks, dev. i was just joking, but your post does move me c ...   Banquo363 01-25-12   Lewm, the artemis is an interesting design. i have not heard ...   Sarcher30 01-25-12   perhaps you can try grounding the motor housing? _______   Hiho 01-25-12   Lew, are you saying that you was able to get the lenco diale ...   Ecir38 01-25-12   Sarcher, what is the evidence that the hum is (or was) due t ...   Lewm 01-25-12   Halcro, i'm not sure i agree with peter on this one. our mod ...   Atmasphere 01-25-12   Halcro, in my statement about ac belt driven tt's vs dc mot ...   Aoliviero 01-25-12   (quote)sarcher, what is the evidence that the hum is (or was ...   Sarcher30 01-25-12   Hiho, the motor was grounded. i am not the only one with a h ...   Sarcher30 01-25-12   lew.......have you not tested the timeline with and without ...   Halcro 01-25-12   Henry, i've done it both ways with the lenco and mk3. the dp ...   Lewm 01-25-12: Mab33 Lew, how about the L-07D? Sorry if i missed it... Mab33  (System | Threads | Answers | This Thread) 01-26-12   I decided to try another method for the thread drive. i conn ...   Halcro 01-26-12   Halcro - looks like the 2 threads are touching. if so you mi ...   Dover 01-26-12   Empire tt's based on ac motors using belts.   Aoliviero 01-26-12   Dover, i kind of like the idea of not placing lateral loads ...   Halcro 01-26-12   the empire is of course ac synchronous drive. but most of m ...   Atmasphere 01-26-12   increased friction and additional vibration/noise, especial ...   Ketchup 01-26-12   Hi dev - just curious regarding the sp10 mkii that you teste ...   Ct0517 01-26-12   Dear mab, l07d is not in service at this time. i am re-wiri ...   Lewm 01-26-12   Hi ct0517, i really did not pay attention, the owner said i ...   Dev

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