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Model 71 code 225 shadow meter
#1

Hi everyone, I have a 71 cathedral with a code 225 chassis. I figured out  (after a while) that code 225 should mean two speakers, this is a cathedral though and the K 7 speaker had separate pins soldered to the three  wires and plugged in the 4 pin socket on the chassis. Was a 2 speaker chassis (221, 223 or 225) chassis ever used in a cathedral cabinet? If so then was a K 7 speaker with a plug used for the attachment? I am guessing all 2 speaker chassis used the 4 pin socket instead of being "hardwired". My main question relates to the shadow meter though, the coil is open. To bypass this , should I solder a resistor across the terminals on the strip on top of  the #8 choke? I replaced the electrolytic caps and am working on the bakelite blocks, the audio section is working after figuring out  the loose speaker pin arrangement. The cabinet is really nice so I want to finish this project. The 71-225 chassis does not match the schematic for a 71-221 and it has the separate tube shields . Any comments and help with bypassing the shadow meter are welcome.
I have a 71-123 chassis with replaced caps and  transferred non working shadow meter in the pristine cabinet right now.

Bob..


Messages In This Thread
Model 71 code 225 shadow meter - by grandntl - 08-26-2017, 08:42 AM
RE: Model 71 code 225 shadow meter - by grandntl - 08-27-2017, 03:09 PM



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