After talking to Tubular Joe for a few minutes, he explained how to rewire the input tubes to use 12AX7's rather than 6AX7's.
He explained that pins 4 and 5 on the 12AX7's are two 6.3v paths and pin 9 is the other end of said path. If you want to wire the tubes in this perticular way, you must run the tubes in parallel instead of the configuration that Bob has us running the heater wires for the 6AX7's.
Here is a photo of two different paths for the two different tubes:
BillD wrote:Well, some people are glass half empty people and some are glass half full. Being an engineer, I just think the glass is the wrong size.
My system (sitting in the garage):
Modified Carver AL III+'s (Pushed into the corners to make room for the ALS speakers)
Modified CarverFest 2011 20w tube amplifier
Carver Pro PT-1800
Sunfire Prototype TGA-2375
Carver TX-2 Tuner (not used)
Logitech Squeezebox (replaced Tuner & dad's CD player)
CARVERaudio Directional RCA interconnects
RCA-Headphone jack for iPod & iPhone