Did JBL ever produce a alnico 18" bass driver? What series would it have come from? when was the earliest 18" produced?
Did JBL ever produce a alnico 18" bass driver? What series would it have come from? when was the earliest 18" produced?
I'm not sure if K151 was the first, but here it is: http://www.lansingheritage.org/html/...p/k-series.htm
Johnny Haugen Sørgård
I may have answered my own question with a look in some old literature.
The K151 is a very deep coned 18" that appears to have a alnico magnetic assembly. It was listed for bass and organ along with the K145 and other alnico JBL woofers. this info from publication PC/76-2.
publication MIB 12/82 lists the E 155 but it is hard to tell if it is a ferite or a Alnico version. The dimensions seem to indicate that it is still alnico even though other speakers in this grouping have all switched to ferite.
Gary
The K151 was an alnico 18" woofer.
http://www.jblpro.com/pub/obsolete/k_series.pdf
AL
E-series is ferrite.
http://www.jblpro.com/pages/obsolete.htm
http://www.jblpro.com/pub/components/eseries.pdf
Johnny Haugen Sørgård
Hey Gary...
Thanks for putting your location with your avatar . My late father was born in Great Falls.
As the other guys said, and you confirmed, the K151 was the first and last alnico 18"...the E155 and all E-series drivers are ferrite.
Edgewound...JBL Pro Authorized...since 1988
Upland Loudspeaker Service, Upland, CA
The bottom speaker in my avatar is a JBL 18" I am curious to look and see which one it is? the origional 18 was a electrovoice EV 18W. I just remember my neighbor replaced it with a JBL before he died in the 80's.
Great lookin old (alnico) driver ! Lucky men !
looks brand new
A government big enough to give you everything you want is big enought to take away everything from you
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