EON G2 White Paper

WHITE PAPER
EON GENERATION2
(PAGE 2)

Taking the Heat - Thermomaster®

Powered speakers present another engineering challenge - how to get rid of the amplifier heat. A
high-powered, compact speaker has little room for the large heat sinks needed to dissipate amplifier
heat. Relying on internal fans was rejected since fan noise emanating from a tripod-mounted speaker
would be unacceptable. And of course it would be absurd to expect users to set up external fans to
cool the heat sinks.

The answer was simple - the whole purpose of a speaker is to move air, why not use some of that air
movement to cool the amplifier? The result was the Thermomaster® Total Thermal Management® system.
This JBL exclusive technology mounts the amplifier to an all aluminum baffle. The baffle includes cooling
fins in the ports. As air moves in the ports, amplifier heat is dissipated.

Reduced Power Compression

Power compression occurs as a result of the voice-coil heating up during operation. As the voice-coil
heats up, its impedance rises. As its impedance rises it draws less power from the amplifier and produces
less output. In some instances, the reduction in output can be the equivalent of losing half of the PA
system after twenty minutes of performance. Since EON's baffle is already made out of aluminum, the next
step was to integrate the horn and the woofer frame into the baffle casting. The large radiating surface of
the EON baffle does an excellent job of dissipating heat from the voice-coil. The result is a measurable
and audible reduction in power compression.

Increasing Customer Value

In addition to adding technological innovations, other new features and benefits were added to increase
the customer's value of EON G2.

More Power. Obviously more power makes the speakers louder allowing it to fill larger performance spaces
with less need to resort to multiple speakers. The EON15 G2's power has more than doubled to 300 watts
(low-frequency) with 100 watts for the high frequency horn.

Added Mixing Functionality. The original EON15P speaker had one input, for either a line level or mic level
input. EON15 G2 still has this input with the addition of two 1/4" input jacks and two-band equalization.
This allows a single or duo act to reinforce vocals and instruments without an external mixer.

Updated Appearance. EON G2 is constructed of a new copolymer material with greater resistance to scuffing
and scratching. The speaker is all black with a handsome EON logo stamped into the grill.

In combination these unique JBL technologies have delivered the performance, convenience and reliability
that have resulted in over 300,000 EON speakers working hard world wide. EON powered speakers have
proven they can take it. In fact there are units in JBL's quality labs that have been running at full power for
11,000 hours. EON is one more demonstration that JBL plays louder, longer.

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