Input resistor change, to 150K

[Ivan303]

So the new Hana SL Mk II 'mono' cartridge wants to see something closer to 400-500 Ohms while my current stepups are PERFECT for the Hana Blue at 150 ohms going to the current 47K input of the Eros2.

Eros II has an extra hole in the top chassis (for a switch?) so I could have the input resistor switchable between 47K to 150K?

Lot easier that building another step-up box.

 

[Paul Joppa]

It won't hurt anything in the Eros, but your SUT may not like it. The 3x higher impedance calls for 3x more inductance in the bass, and it will provide 3x less damping of the high frequency resonance. That may or may not be a problem, depending on the particular transformer.

 

[Ivan303]

Thanks Paul!

Good to know you are still around to help us out.

Turns out Cinemag claims, at least in my last email communication with them a year or more ago, to wind custom step-ups.

Hopefully I can get a switchable 150-450 Ohm into 47k from them. Worst case 150-300 ohm, which I suppose I could lie with.

Then build them into the Eros 2 as planned.