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In Reply to: RE: Need SUT recommendations for Denon DL103R posted by Travis on August 14, 2016 at 16:00:30
The Auditorium 23 SUT for the Denon cartridge is specifically for the standard 103, not the 103R, which has a completely different output impedance.
Follow Ups:
"The Auditorium 23 SUT for the Denon cartridge is specifically for the standard 103, not the 103R, which has a completely different output impedance."
Please elaborate :-)
I have both a standard 103 and a 103R. I use an Auditorium 23 SUT, and the Auditorium 23 distributor informed me that this SUT is fully compatible with either cartridge.
The literature that came with my 103 specifies an electrical impedance of 40 ohms +/-20%(1kHz) while the literature that Denon included with my 103R specifies an electrical impedance of 100 ohms min. (40 ohms when using a transformer).
Can you explain why you claim that my Auditorium 23 SUT is compatible with my standard 103 but at the same time not compatible with my 103R?
This is a serious inquiry from someone that doesn't quite understand your statement and is not intended to start an argument or question your veracity.
Please point me to a link if you don't have the time for a full explanation. I would really appreciate it if you could help me to understand this :-)
Auditorium 23 makes two different versions of the standard SUT, one for SPU cartridges or others that have a low impedance and the Denon version for the 103 or cartridges with a high impedance, like the EMT TSD-15. The Denon 103R does not have a high impedance and therefore won't work as intended when using the A23 that's made for the 103. I've as I been told by dealer and by the A23 distributor that is made for the standard 103, not the 103R version.
There is no reason why a SUT that is optimized for a DL103 should not work for a DL103R.
The DL-103 and DL-103R have different electrical parameters. The standard DL-103 has DC coil resistance of 40-ohms with a rated output of 0.3-mV whereas the DL-103R has DC coil resistance of 14-ohms with a rated output of 0.25-mV. Don't you think this would make a difference regarding step-up transformer optimization? If not, what do you mean by the term "optimized" relative to step-up transformers and cartridges?
Thanks,
John Elison
Have you read the links yet John ?
Edits: 08/26/16
Yes, thanks!
If you change the word "optimized" to for example "highly suitable",
this link can possibly give you an explanation*.*I have no affiliation whatsoever to Rothwell Audio
Edit:Here is one more link:http://www.rothwellaudioproducts.co.uk/html/mc_step-up_transformers_explai.html
Edits: 08/23/16
Thank you, I appreciate your answer :-)
I have personally used both the 103 and 103R and experimented with different step up ratios to determine what sounds best. 1:20 is the best sounding ratio for the 103 and 1:40 is the best sounding ratio for the 103R. These ratios were determined from listening test and not from mathematical computations. If you use 1:20 with the 103R, it will sound too bright. If you use 1:40 with the 103, it will sound muddy and flat.
I believe that "Garth" advocated using Denon 103 cartridges with the Cinemag 3440A on its highest setting of 37dB which cut the output down but, worked very well.
.
"If people don't want to come, nothing will stop them" - Sol Hurok
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