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Puzzled with SUTs...

Can somebody enlighten me why in earth I have problem matching SUTs to Audio Research phono preamps?
Situation 1.
Hashimoto HM-3 26db (1:20) ratio , Benz MC cart (0.3V ;7.2 Ohm) into Audio research SP16 .Natural impedance reflected 117.5 , calculated average voltage after SUT- 5.64mv . Result? Frequent overload of the phono input.
Situation 2.
Cinemag 1254 20db (wired for 1:10 ) Benz MC into Audio Research PH-7 phono into line input of SP16. Natural load impedance reflected to cart 470 Ohm ,calculated average voltage after SUT ~2.95 V effect ? Constant overload of PH7 input (57 dB gain , 75mv overload capacity)
What a heck ???

PS and to add insult to injury Cinemag with 1:10 ratio sounds subjectively louder than Hashimoto 1;20 on ARC SP16 phono input.
I checked the wiring multiple times and it's all correct according to published by Cinemag 1254 wiring diagram.




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Topic - Puzzled with SUTs... - Wojciech 07:03:51 03/1/14 (13)

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