10-14-2011, 10:50 AM
Pepper,
You may try different secondary connections to get the best operation...loudness and quality. With a 4 ohm secondary impedance you go down the 4 ohm vertical table to get a match close to the theoritical primary tube load impedance. In this case around 18kohm.
So it looks like connections to secondary pins 1 & 3 with one being the ground would give you about 15kohms. Pins 5 & 6 with 5 being ground would give you around 22kohms primary load impedance.
See what works best for you. 
John
You may try different secondary connections to get the best operation...loudness and quality. With a 4 ohm secondary impedance you go down the 4 ohm vertical table to get a match close to the theoritical primary tube load impedance. In this case around 18kohm.
So it looks like connections to secondary pins 1 & 3 with one being the ground would give you about 15kohms. Pins 5 & 6 with 5 being ground would give you around 22kohms primary load impedance.
See what works best for you. John
