The Mike New Technics Bearing

[chris@panteg]

Well hey,I'm doing my best over here, ya know what I mean?

Actually feeling pretty proud of myself for taking the job on in the first place, so... it ain't all bad.

Nick , don't let anyone knock you down m8 , it doesn't seem to me you've done anything wrong ? Perhaps just unlucky , you say with the standard bearing everything is fine ?

[nickbaba]

Oh and please can I request that in future we limit the advice to technical suggestions?
If I wanted therapy I wouldn't look for it on a HiFi forum, believe me.

[krugdoktor]

Had the same problem, slight wow on 33 and massive wow on 45. Then I realised that the Soundhifi/Dave Cawley modifications (called "motor dynamics mod") were simply torque reduction! After removing the bits everything returned to normal and I had my Techy back! If your 12xx has said modification REMOVE IT. Hope you get your problems sorted and can enjoy the improvements with the MN bearing.

[MartinT]

Yes Michael, I had that same mod and had to remove it when I bought Mike New's heavy platter. The warble on 45 was very noticeable.

[prestonchipfryer]

Yes Michael, I had that same mod and had to remove it when I bought Mike New's heavy platter. The warble on 45 was very noticeable.

Hi Martin. Would there be a chance of any pics showing how to disable this mod?

John

[chris@panteg]

Nick , did you manage to fix the problem you had with the pitch control ?

Could be related to this , just a thought ?

[costerdock]

Man - still waiting for mine to arrive in the US - any day soon!

[nickbaba]

Hi Chris - thanks for the thought & well remembered btw!
As it happens I didn't fix that problem yet, so there might be a connection. Not been using the pitch fader much recently so it had slipped my mind. If it happens again when I re-fit the MNB, and I can't get it to settle down by tinkering with the bearing placement/platter etc, I will look into the pitch control.
Cheers.

[OneyedK]

Then I realised that the Soundhifi/Dave Cawley modifications (called "motor dynamics mod") were simply torque reduction!

Technically it wasn't even torque reduction, but PLL loop gain reduction.
It was bad practice, and even audible with stock bearing and platter.
I asked DC on his forum how it was supposed to work in the first place,
but I received the usual answer.

Hence my prior question "is your deck 100% ok".
With this kind of mods, it's not.

[Mike_New]

Hi Karl,
In a conversation with DC some time ago he said that the mod was to allow the "sound" of the SL to resemble that of the LP12. Although, why anyone would want to do that is strange. Excepting that maybe the modified Phase Lock Loop characteristics resembled the affects of a rubber band driven TT. on the heavier passages of music.

With the CR values that were chosen, the Mod should be removed on any SL using a heavier platter than the OEM version. As Martin and others quickly discovered.

However I would not think that it would cause any problems when using my Bearing.
Maybe Nick does have a pitch control problem which is excerbated by fitting my bearing.

Nick, check to see if the pins on the plug from the slider are clean and do not have any oil or dirt on them. This should not be the case but it is worth checking, clean the pins with Acetone.

I have tried running my test SL without the slider plug connected. The speed was slightly higher and less constant.