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| Bought some old speakers from ebay - here's what I found inside |
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| floobydust:
Speakers are kind big to steal? I just noticed the fail, die-cast alumium enclosure for the speaker :palm: |
| james_s:
--- Quote from: floobydust on May 17, 2021, 06:22:05 pm ---Speakers are kind big to steal? I just noticed the fail, die-cast alumium enclosure for the speaker :palm: --- End quote --- People try to steal big items all the time, I don't think there are a lot of people stealing big HiFi speakers anymore but back in the 70s-80s they were expensive big ticket items like fancy TVs are today. |
| MrMobodies:
--- Quote from: DrG on May 16, 2021, 09:51:45 pm ---Definitely looks like a Fairchild 4013B P(lastic package) C(ommercial temperature). My wild, stab in the dark, know nothing about audiophholery, is that the flip flop has something to do with phasing or polarity correction [how is that for a pure BS answer] because that is what has been a rage with equivocal importance and strictly imo. --- End quote --- I was curious as to what that was and found it in a 1978 Fairchild catalogue. ftp://bitsavers.informatik.uni-stuttgart.de/components/fairchild/_dataBooks/1978_Fairchild_Full_Line_Condensed_Catalog.pdf Sorry wrong part number without the F in "4013BPC". and I thinked I typed it wrongly as well. |
| ucanel:
--- Quote from: james_s on May 17, 2021, 06:42:23 pm --- --- Quote from: floobydust on May 17, 2021, 06:22:05 pm ---Speakers are kind big to steal? I just noticed the fail, die-cast alumium enclosure for the speaker :palm: --- End quote --- People try to steal big items all the time, I don't think there are a lot of people stealing big HiFi speakers anymore but back in the 70s-80s they were expensive big ticket items like fancy TVs are today. --- End quote --- I agree, here is a link to how to steal a TV without caught by cams. I hate ads but these kinds are very good: https://youtu.be/iHFdYic6vuw |
| Benta:
Anti-theft device. the coils and the two caps are resonant circuits for the theft detector at the doors. The IC and resistors are pure camouflage (very usual back then). |
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