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Old 14-02-21, 02:47
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Robert Bergeron Robert Bergeron is offline
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Default speaker connected to No 19 set

Gents , is there a way to connect a speaker to the WS no 19 set in place of headsets ? The idea is to show visitors real radio traffic without having to hand over a set of headsets and microphone .
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Old 14-02-21, 19:30
Bruce MacMillan Bruce MacMillan is offline
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quite a few people have used a speaker either connected directly to pin 4 of PL2A or through a control box. The thing is the audio output impedance of the 19 set is 100 ohms. Most speakers are around 3-8 ohms. This mismatch will result in low audio. You can use an audio matching transformer to match your speaker impedance. Connecting it to a 19 set snatch plug means you don't have to modify the set. It looks like you have a #3 control box so should have a spare drop. Canada actually had a need for a speaker and had a quote from Pye but never followed through.
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Old 14-02-21, 20:51
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Robert Bergeron Robert Bergeron is offline
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Thanks Bruce . 100 Ohms . That’s all my radio / tv tech will need to know to make my snatch plug . Very useful info .
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Old 24-02-21, 08:00
Bruce MacMillan Bruce MacMillan is offline
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researching for another user on another website I came up with a Hammond 144B transformer. This is 200 ohm center tapped to 3.2 ohm. Using 1/2 of the primary you'll have a perfect match. You can try Electrosonic or Mouser, etc to source the part.
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Old 25-02-21, 16:34
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CWO (ret) Gilles Aubé CWO (ret) Gilles Aubé is offline
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Default speaker connected to No 19 set

Mon col, in my time with the 19th set we used a speaker from the Tanoids
set from the gun and it worked perfectelly.
BON tir.
Gilles
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Old 27-02-21, 13:59
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Robert Bergeron Robert Bergeron is offline
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Thank you Chief Aubé .
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  #7  
Old 27-02-21, 21:35
Chris Suslowicz Chris Suslowicz is offline
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I think the Tannoy 'gun control loudspeaker' is probably a good solution, and if you need a volume control look at the Control Unit 190 as used on the Sexton for how that was set up. (I think I've got this right.)

Chris.
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