primary Z for L101

[mashaffer]

Does anyone know off hand the primary impedance of the OPT on a Hammond L101 amp (PP 6BQ6)?

 

[boobtube]

Yep. The turns ratio is 900:1, so 7200 ohm pri for 8 ohm sec. I measured two and were the same. You might have had a typo, but it is 6BQ5 tubes not 6BQ6

 

[boobtube]

Sorry, I should have said 900:1 IMPEDANCE ratio, so 7200 ohm pri. impedance for 8 ohm sec. Turns ratio is 30:1.

 

[mashaffer]

Thank you. Yes meant 6BQ5.