PlusOne HCL Woofers: The JBL
Power Series P452 speakers feature Honeycomb Laminate (HCL) cone woofers. This
material consists of two woven glass fiber layers with an epoxy-coated Nomex
honeycomb core. This makes the cone exceptionally stiff, yet lightweight. The
benefits of HCL woofers include increased efficiency, exceptional midrange
clarity and lower distortion at high output levels. The PlusOne woofer cones
have more surface area than conventional 4" speakers for increased bass
output and increased efficiency.
Titanium Tweeters: The
speakers have pure-titanium, edge-driven dome tweeters. This
style tweeter is similar to those found in high end home audio loudspeakers, and
the benefits include reduced distortion at high output levels and superior
integration with the mid/woofer.
Coils: The P452
features a voice coil larger than what is found on most models of the same size.
This larger voice coil increases power handling while minimizing distortion.
Tinsel Leads: The
spider integrated tinsel leads greatly enhance reliability and eliminate audible
tinsel lead slap.
speakers are equipped with computer-optimized passive outboard crossovers that
have been voice-matched to ensure optimum imaging, clarity and detail. The
dimensions of the crossovers are: Length=3.085", Width=1.835"
Height=1.045, Input wires (20 gauge): 12", Output wires (20 gauge):
Each crossover input lead is terminated with bare wire, and the two output leads
(one for the woofer and one for the tweeter) are terminated with female
quick-slides. The positive woofer lead has a 0.250" female quick-slide and
the negative woofer lead has a 0.187" female quick-slide. The positive
tweeter lead has a 0.205" female quick-slide and the negative tweeter lead
has a 0.110" female quick-slide. These quick-slides connect directly to the
woofer and tweeter terminals on each speaker.
Removable Tabs: If necessary,
the mounting tabs or "ears" can be removed to allow the speakers to be
mounted in locations requiring fewer than 4 tabs. The tabs are scored so they
can be gripped with pliers and bent until they detach.
Grilles: The P452 speakers come
with silver and black plastic grilles.
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