What does M-34A mean ?

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Script

Well-known member
Joined
Nov 27, 2008
Messages
2,263
Location
Japan
Pulled two VU meters from a decommissioned Yamaha mixer. The case has a printed code but it doesn't yield anything on the interwebs.

Also there's "M-34A" printed into the transparent plastic housing. It's not a SIFAM meter. What does it mean ?Anything ? About the type / specs / behavior of the meter ? They sat on the output.

Thanks
 
I've seen that designator number on eBay also.

Anyway, meters are from a PM-170.

Subboard has IN60 diode bridge, a 15k across terminals and 220R to ground. No ballistics cap.
 

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