01-02-2018, 03:32 PM
(This post was last modified: 01-02-2018, 03:33 PM by vibrating string.)
Slider,
I calculated the 6V6 plate currents using the process I described in a previous entry to this thread. It is based on the plate voltages and the impedance of each half of the input side of the output transformer for each 6V6. The plate currents are in the mid 20ma range for both tubes using a single 680 ohm bias resistor (22 and 26 ma). (I actually measured plate currents for 470 and 770 ohm resistors, so I am interpolating for 680 ohms.)
The original speaker is labeled P12Q on the frame. I passed this information to Weber Speakers for the replacement and they spec'd out what they say is a good Weber alternative. I have to have faith.
Larry
I calculated the 6V6 plate currents using the process I described in a previous entry to this thread. It is based on the plate voltages and the impedance of each half of the input side of the output transformer for each 6V6. The plate currents are in the mid 20ma range for both tubes using a single 680 ohm bias resistor (22 and 26 ma). (I actually measured plate currents for 470 and 770 ohm resistors, so I am interpolating for 680 ohms.)
The original speaker is labeled P12Q on the frame. I passed this information to Weber Speakers for the replacement and they spec'd out what they say is a good Weber alternative. I have to have faith.
Larry