How can I tell if my EMT is 927 DST or just 927 ST

[musicomm]

Here I took some pictures of 927D spindle. You can see where LP stops by the mark on the spindle in the picture. It's diameter is 6.5mm (top of the spindle) and the bottom 7.5mm with 2.5°inclination.


LP manufacturers are recommended to make their LPs with center hole of 7.24 to 7.33mm diameter but if you measure the LPs you will find the hole size varies from 7.0 to 7.35mm.

[musicomm]

This is a picture of the same spindle when pressed from the top. The LP will be hung in the middle of the spindle above 2-3mm from the mat. And the pressure of the LP and auxiliary weight the LP will be pushed down to the glassmat for for perfect contact to the mat. This was designed for perfect centering of any LPs made of various manufacturing tolerance of the hole diameter of the LPs.

[rollingjohnny]

Hallo Kim,
It looks like you bought a genuine EMT 927D.
I collected almost 1000 pictures from R35, R36, R37, 927 D, A, St, ect.
and i can tell you a 927D exists in many variations.
The 927D is not better than a normal 927 and was even cheaper than a 927ASt
(proof from a original pricelist from the '50)
It used the same motor and bearing/platter like any 927. (which was always top notch)
The only difference was that the record industry didn't need the break ect. so many things were left out of these machines, and other things were build in like extented readout for the rilleranzeiger, but almost every 927D had an spindle (with spring) like yours to center the record.
I can proof (with photo's) that when an order come from a company, EMT took a 927 chassis from the shelf and made a "D" machine from a 927st or 927ASt chassis.
This varity also apply's for the 927F machines: some have a Rilleranzeiger, sometimes a light for styles, some had a powersupply....ect
All these variations also exist for the inscription on the machines:
not every "A","D" and "F" machine have the right insciption on the top.

greetings John

[musicomm]

Hi John,
I do agree with you. As EMT 927D version had been produced by special order for special purpose only , and because D version can be made from A, or ST body chassis, the mark on the body can vary. So I think what make the D version is not the engraved mark on the body but composition of the turntable such as Variable spindle for perfect centering, Glass mat for absolute flat surface, different Optical locator. (Maybe different motor too)

I understood that the quick stop and start function was removed because the Glass mat was too heavy for the function and that function wasn't need in the laboratory (that function was for mainly roadcasting company)

Kim

[eliematias]

Hello everybody,

I completely agree with John, looks like a person who really knows what he is talking about, since I have EMT 927F, from swedish broadcast, with two openings for two tonearms and sticker indicating EMT 927F, but on the top it is only EMT 927, without any letters. Rgds.