It suddenly occurred to me that all they have to do is install a resistor in parallel with the primary to get whatever load they want for a given turns ratio. For example, for a 1:10 SUT, an 18 ohm resistor on the primary will result in about a 27 ohm load seen by the cartridge. Makes more sense.
Recommandation for 1:6 1:8 SUT under $5K?
I’m looking for some advice on a step-up transformer that pairs well with my Audio Research LS28SE, PH9, and Hana Umami Blue cartridge. I currently have both the Denon AU-S1 and AU-340. The AU-S1 sounds absolutely beautiful—very transparent and open—but at 1:13 the gain is too high, and I’m getting some clipping, especially on dynamic peaks. Even with the AU-340 at 1:10, I can still hear a bit of overload. I’ve tried playing with loading and parallel resistors, but the issue really comes down to gain. I think something in the 1:6 to 1:8 range would be perfect, enough to keep the clarity and tone I’m getting from the AU-S1 but with better headroom. My budget is around $5k, and I’m open to any recommendations for a high-quality SUT?
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Many of the Japanese SUTs (Luxman / AN:Kondo) use severe loading on the transformer to reflect back a small multiple of the internal impedance. This is typically applied to the SUT secondary and could explain this situation. I think the key point here is much of the mystery and speculation around SUTs in general stems from the limited published data by the manufacturer. The assumption of a 47kΩ terminating resistor falls out of the picture if there is a 5KΩ resistor internally soldered across the transformer secondary. This also mucks with all of the other assumptions/calculations. dave |
Dunno if this would be a good fit. I have one and quality and sound is excellent using my Declare tube amp/pre-amp. Support from UK is also excellent.
https://www.zinamp.co.uk/products/Headmeister.html
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@elliottbnewcombjr No I don't have a preference for wiring. Anything that sounds good. But I beleive in passive components as the first stage of MC cartidge amplification. |
- 68 posts total