In measuring my tt speed I am seeing the lines on the strobe bounce back and forth, not holding steady. This is a belt tt with a dc motor setup with a closed loop controller, and ideas on what can cause this? I am thinking the belt may be to tight, it is a new belt BTW...
Any number of possibilities (from most likely to least likely):
1. The strobe disk is not perfectly centered
2. The marks on the strobe disk are not perfectly located
3. If the platter is on a sub-platter, it is not perfectly centered
4. The bearing is not properly lubed or is sticking because the oil/grease is too thick
5. The belt is slipping because of contamination
6. The platter is eccentric
7. Feedback in your closed loop system is not set correctly, and the loop is "hunting"
8. The motor is speeding up and slowing down
1. The strobe disk is not perfectly centered
2. The marks on the strobe disk are not perfectly located
3. If the platter is on a sub-platter, it is not perfectly centered
4. The bearing is not properly lubed or is sticking because the oil/grease is too thick
5. The belt is slipping because of contamination
6. The platter is eccentric
7. Feedback in your closed loop system is not set correctly, and the loop is "hunting"
8. The motor is speeding up and slowing down
The stripes bounce or move back and forth with the pace of the platter rotation? Can you hear speed variation on piano or church organ recordings?
No when listen to music the notes sound correct even piano. Now on certain music I do hear what I think is a slight slowing down but the voice sounds perfect.
It would eliminate a lot of "speculation" if the make and model of said turntable was known.
Schematics help too.
Not enough information or lack thereof is like tyiing a blindfold on someone and asking them to stroll down the street.
Schematics help too.
Not enough information or lack thereof is like tyiing a blindfold on someone and asking them to stroll down the street.
A large platter with that much rotating mass isn't going to be jumping around, so there must be something wrong with your speed ap.
jeff
I have to say after checking out that, uh, machine online, that it's got to be the ugliest and most rediculous thing I've seen all this week.
Obviously it's one of those so-called "high end" monstrosities that are made to "wow" the average human mind with thoughts of audiophile delight.
And naturally, over-priced as well.
Yet, my lowly direct-drive Kenwood turntable is designed to do the very same thing - to silently and accurately rotate a record and play it.
And the strobe on that doesn't waver or vary.
One has to wonder why all those "high end" products seem to have issues after a short time, yet the "common stuff" like mine lasts for decades.
Obviously it's one of those so-called "high end" monstrosities that are made to "wow" the average human mind with thoughts of audiophile delight.
And naturally, over-priced as well.
Yet, my lowly direct-drive Kenwood turntable is designed to do the very same thing - to silently and accurately rotate a record and play it.
And the strobe on that doesn't waver or vary.
One has to wonder why all those "high end" products seem to have issues after a short time, yet the "common stuff" like mine lasts for decades.
Thanks so much for all the kind words you are awesome!!! If you don't want to be part of the solution please don't be part of the problem, now KICK ROCKS!!!!!
Have you tried the KAB on a different turntable, with better results? Does it fit tightly on the spindle?
How does the old belt affect the results?
When I had other tables I used it, the old belt was doing the same thing that why I made a new one.
Then the problem must be in the turntable. Does the visible motion of the strobe repeat
once per revolution of the platter?
once per revolution of the platter?
Certainly "part of the solution" is for me to point out, in honest terms, the rediculousness of some "high end" products.
And you say that manufacturer isn't in business any more?
I wonder why. 🙄
They suckered people into buying their crap and took the money and fled the scene.
That...is part of the problem.
