Baldwin Panoramic Tone Convertor

ernie · Jun-06-2009, 06:17

I've gotten hold of a Baldwin Panoramic Tone Convertor with the spring tank. It's missing the power supply and has a broken switch. A co-worker was kind enough to test the tubes, draw up a pinout diagram for the round octal 'P.T. POWER SOCKET' connector, and calculate his best estimate for the proper voltages. Could anyone with a bit of organ experience give their take on the accuracy? I'd like to build a suitable power supply and try using this effect in the mix.

The broken switch appears to be a rotary-style DP3T. One leg of the circuit seems to attenuate Channel "M" Delay Feedback, and the other somehow affects Channel "R" Gain. Could it hurt anything if I used two SP3T instead to allow for combinations of settings?

John W · Jan-11-2010, 06:17

Hi,
I have the same panoramic unit and reverb and am trying to set up something similar. My switch is intact, but I don't have the power transformer to check the voltages.
One thing I did notice from the schematic is that the heater voltage should be 6.3 rather than 12. The tubes are hooked up with there heaters in series.
I was wondering if you ever got any farther in your build?

Jun-06-2009, 06:17	#1 (permalink)
ernie Recruit, Pianissimo Join Date: Jun 2009 Posts: 1	Baldwin Panoramic Tone Convertor I've gotten hold of a Baldwin Panoramic Tone Convertor with the spring tank. It's missing the power supply and has a broken switch. A co-worker was kind enough to test the tubes, draw up a pinout diagram for the round octal 'P.T. POWER SOCKET' connector, and calculate his best estimate for the proper voltages. Could anyone with a bit of organ experience give their take on the accuracy? I'd like to build a suitable power supply and try using this effect in the mix. The broken switch appears to be a rotary-style DP3T. One leg of the circuit seems to attenuate Channel "M" Delay Feedback, and the other somehow affects Channel "R" Gain. Could it hurt anything if I used two SP3T instead to allow for combinations of settings?

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Jan-11-2010, 06:17	#2 (permalink)
John W Recruit, Pianissimo Join Date: Jan 2010 Posts: 1	Hi, I have the same panoramic unit and reverb and am trying to set up something similar. My switch is intact, but I don't have the power transformer to check the voltages. One thing I did notice from the schematic is that the heater voltage should be 6.3 rather than 12. The tubes are hooked up with there heaters in series. I was wondering if you ever got any farther in your build?