Its an Ortofon Cadenza blue. Output voltage at 1 kHz 5 cm/sec - 0.5 mVWhich cartridge and whats its output value in mV
I have the same cartridge and use a pair of Sowter 8055 transformers to good effect, which have now been replaced by Sowter by type 1480.Its an Ortofon Cadenza blue. Output voltage at 1 kHz 5 cm/sec - 0.5 mV
Is that on the primary or secondary?wiring them up with a 130ohm across the primary to give the correct 100ohm load for the cartridge will work very well indeed.
Edit: assuming the amp has a 47kohm input impedance on the MM phono stage.
The primary. 130ohm in parallel with the reflected 470ohm to give approx 100 ohm effective.Is that on the primary or secondary?
I only posted this as a rough guide to achieving sufficient gain, as the linked to eBay auction was for a 6:1 ratio Partridge pair.The step-up ratios resulting from following that chart seem a lot higher than is generally suggested. With a 0.4mV cartridge the ratio would deliver an output between 6.5 and 8 millivolts, whereas you usually hear of outputs ending up around 5mV or less. Eg. my Ortofon SPU (0.18mV, internal impedance >5 Ohm) is usually recommended to be used with a 1:20 SUT for around 4mV output (I use 1:26), but in the above chart it would end up around 8mV. I wonder why such unusually high ratios are suggested on this chart?
Ah,OK. I thought it would be placed across the secondaries.The primary. 130ohm in parallel with the reflected 470ohm to give approx 100 ohm effective.