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Identifying an Auditorium 23 Step up transformer

Hi, I have an Auditorium 23 Step up Transformer but don't know whether it is the high impedance version - for Denon 103, EMT etc, or the low impedance version for Ortofon SPU. There are no markings that indicate anything on the case. Can anyone help please? Mine has a black earth wire coming from its innards.
Thank You
128x128rogerstaton
dekay's avatar
dekay
5,627 posts
 
Black (ground cable) = Denon 103

Green = Ortofon SPU

Yellow = EMT

DeKay


fjn04
1,561 posts
 
Great info dekay..I had both and don't recall. I can tell you the standard SPU and Denon versions are priced in line (if not the same) with one another. The EMT I believe is a fair amount higher in price, yet below the Homage T1 and T2. I have tried SUT's by a few manufacturers, and always preferred the A23. 
rodman99999
6,159 posts
 
I have an Auditorium A23 SUT, designated/purchased for a Denon 103D, that does have a black ground wire.                  Never have seen any further info, regarding how to identify other iterations, so- can’t swear to anything.     Input resistance measures 7.8 Ohms (plus probes/leads).
dekay's avatar
dekay
5,627 posts
 
The color code info is on a setup brochure.

Certain I got it right as I recall that the cartridges spelled DOE in the order listed and the colors were in alphabetical order.

DeKay

randyk
70 posts
 
I have the SPU model I purchased in 2009.  In those days, there was no badge.  Silver colored case work was SPU; black case was Denon/EMT.  Ground wire on mine is black.

Best to take a photo and send it to Jonathan Halpern, Tone Imports, for confirmation, if there is still any doubt.
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