04-16-2014, 08:21 PM
Sparky
why exactly are you going to fry anything? and where is that 11:1 ratio came fom?
Again, the speaker voice coil in 84 is 0.89 Ohm (zero point eight nine), not eighty nine ohm.
And so it is more or less in all old early Philcos: 90, 20, 70, 111, 95 and such.
The transformer they use in 2x71A or 2x45 pushpulls are more or less 100:1 ratio hich will turn 0.89 ohm into 8.9 kOhm impedance that ain't gonn burn anything.
So I m not sure what the post was about, but clearly no one uses 1:11 rAtio an 0.89 ohms there for 42 tube.
why exactly are you going to fry anything? and where is that 11:1 ratio came fom?
Again, the speaker voice coil in 84 is 0.89 Ohm (zero point eight nine), not eighty nine ohm.
And so it is more or less in all old early Philcos: 90, 20, 70, 111, 95 and such.
The transformer they use in 2x71A or 2x45 pushpulls are more or less 100:1 ratio hich will turn 0.89 ohm into 8.9 kOhm impedance that ain't gonn burn anything.
So I m not sure what the post was about, but clearly no one uses 1:11 rAtio an 0.89 ohms there for 42 tube.
