WTB JBL d-130 15” speaker

Greg Readling · Post by **Greg Readling** » 1 Sep 2023 8:29 am

Hoping to find one of these with the original cone in good working order.
Thanks,
Greg

Dave Grafe · Post by **Dave Grafe** » 3 Sep 2023 3:50 am

Are you looking for the hifi woofer D130 or the more durable guitar speaker D130F?

Greg Readling · Post by **Greg Readling** » 3 Sep 2023 6:59 am

Either one would work for my needs.
I think they were identical except the voice coil gap was slightly wider on the
“F” versions to allow for greater mounting tolerances (I.e., people mounting
too tightly and warping the frame)
That’s what I read somewhere anyway…
Thanks,
Greg

Dave Grafe · Post by **Dave Grafe** » 3 Sep 2023 3:48 pm

The "F" modification has nothing to do with mounting and is fairly significant. The gap was increased to mitigate heat-driven voice coil deformation at high power levels causing it to bind in the gap. Widening the gap provided necessary clearance to more than double the power handling, from 25-30 watts to 75-80 watts. The voice coil of the D130F still deforms it just has more room to do it in without snagging and failing catastrophically.

Be of knowledge...

https://audioheritage.org/html/history/ ... unding.htm

https://audioheritage.org/html/profiles/jbl/d130.htm

Erv Niehaus · Post by **Erv Niehaus** » 4 Sep 2023 7:14 am

I think the "F" model was made for Fender.
Erv