Speed control JVC QL A2

GrooveCat · 9th January 2008, 06:39 PM

I have a JVC QL A2 turntable which sounds good when working at the appropriate speed, however, it has a strong preference for 45 rpm rather than 33. I set the speed selector to 33 and invariably at some point during my record listening everything gets faster and sounds higher. It's annoying.

I don't have the money for a new table, and like the one I have when working well.
Can anyone offer a suggestion for fixing this?

Thanks

maxro · 10th January 2008, 06:23 AM

The JVC (and Denon) direct drives have a magnetic ring around the inside of the platter. There is a tape head like (except non-contact) sensor that reads this ring and acts as a tachometer. Hopefully it's just a matter of repositioning the sensor, not a problem with the magnetic strip or electronics. I don't know how you would go about fixing that.

GrooveCat · 11th January 2008, 02:37 PM

Thanks for the advice. I didn't realize that's how the speed was controlled. I'll look into the sensor position, and go from there.

9th January 2008, 06:39 PM	#1
GrooveCat diyAudio Member Join Date: Jan 2008	Speed control JVC QL A2 I have a JVC QL A2 turntable which sounds good when working at the appropriate speed, however, it has a strong preference for 45 rpm rather than 33. I set the speed selector to 33 and invariably at some point during my record listening everything gets faster and sounds higher. It's annoying. I don't have the money for a new table, and like the one I have when working well. Can anyone offer a suggestion for fixing this? Thanks

10th January 2008, 06:23 AM	#2
maxro diyAudio Member Join Date: Dec 2004 Location: Survey says: Least happiest city in Canada	The JVC (and Denon) direct drives have a magnetic ring around the inside of the platter. There is a tape head like (except non-contact) sensor that reads this ring and acts as a tachometer. Hopefully it's just a matter of repositioning the sensor, not a problem with the magnetic strip or electronics. I don't know how you would go about fixing that. __________________ "Part of the reason a poot into a toilet bowl sounds the way it does is because of phase shift." -Andrew Eckhardt

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11th January 2008, 02:37 PM	#3
GrooveCat diyAudio Member Join Date: Jan 2008	Thanks for the advice. I didn't realize that's how the speed was controlled. I'll look into the sensor position, and go from there.

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