Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

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, 09:42 AM
RE: Model 71 code 225 shadow meter - by grandntl - 08-27-2017, 04:09 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Philco model 60
Welcome to the Phorum, Radios1340!  The oscillator coil on the 60 is a common culprit.  I just bought a 60B (June 1934) ...GarySP — 02:33 PM
Philco model 60
Yes, standard alignment procedure. I can get the minuscule tone to vary when adjusting the trimmers. But you almost have...Radios1340 — 01:40 PM
A Marconi model 86
An imposing-looking radio, for sure.morzh — 12:43 PM
Philco model 60
Model 60 struck again :lol: Welcome to the Phorum! Above is the article on Model 60. Could be of some use. Now...morzh — 12:38 PM
A Marconi model 86
Ooh, very nice!jrblasde — 12:19 PM
A Marconi model 86
I am picking up this radio today. The seller tells me it is all there and working.including the tuning eye. It has 13 tu...Dan Walker — 12:07 PM
Philco model 60
Hi guys! I’m a new member here but have been using your resources for quite some time. Hopefully I can get some help wit...Radios1340 — 11:52 AM
An attempt to remove the Field Coil from a G speaker
Milkjug plastic?morzh — 09:36 PM
An attempt to remove the Field Coil from a G speaker
Yep. 'Cause when I heard "buibble" I immediately thought of this and started wondering how this poly...morzh — 09:33 PM
An attempt to remove the Field Coil from a G speaker
Blister Pack, that's what I was trying to remember!RodB — 09:29 PM

[-]
Who's Online
There are currently 6117 online users. [Complete List]
» 1 Member(s) | 6116 Guest(s)
Avatar

>