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Altec 414-8B ...

24.140.98.34
Posted on May 20, 2015 at 11:39:34
deathtube 667



Finally got my 414-8B's back from GPA: new cones, voice coils and re-magnetized.

GPA did a nice job and the T/S parameters showed 100dB/1W/1M efficiency.

Added new front baffles to my test boxes and sprayed them in rubberized damping paint.

They turned out pretty good.

 

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RE: Altec 414-8B ..., posted on May 20, 2015 at 17:53:39
moray james
Manufacturer

Posts: 1599
Location: Calgary on the Bow
Joined: May 19, 2002
 you might want to consider covering all that FG pink inside your speaker with a thick layer of poly fill otherwise you and your family are are going to be breathing fine glass shards. If perhaps you think I am making too much about this take a look at the regulations on sealing up a house which uses fiberglass insulation. No worries with a sealed cabinet but with an open bass reflex pumping all the time it's not a good arrangement. Nice woofer by the way congrats on the factory rebuild I'll bet it is better than new. Best regards Moray James.
moray james

 

RE: Altec 414-8B ..., posted on May 22, 2015 at 03:46:01
deathtube 667
 A lot of people use RG to fill speakers but I have not read any reports of negative effects or noticed fibers coming out of the ports.

I got the 414's off Ebay and the drivers measured quite differently and the original aftermarket recone job was awful, so I never listened to them, just shipped them off to Bill at GPA.

All I can say is that it was money well spent once I finally got to listen to them.



 

RE: Altec 414-8B ..., posted on May 22, 2015 at 07:40:44
moray james
Manufacturer

Posts: 1599
Location: Calgary on the Bow
Joined: May 19, 2002
 https://www.nachi.org/fiberglass-insulation-history-hazards-alternatives.htm
moray james

 

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