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Ultra-Light, Built on a Legacy
Power amps have always been heavy, mainly because of the massive
transformers and heat sinks. Our new EPX Series amps are based on
groundbreaking switch-mode technology which eliminates the heavy
transformer. As a result, the amp weighs around 40% less - in fact the
EPX3000 is just 22 lbs./10.10 kg, and you can lift it up almost with one
finger. Best of all our super-reliable switch-mode power supply provides
an even tighter bass performance as it can deliver ultra-high peak
currents.
In a Class of Their Own
The secret to the EPX series' incredible power-to-weight ratio is their
use of a switching-mode power supply combined with Class-H topology.
Switching-mode power supplies work on demand. Instead of constantly
working at full power and dissipating excess power as heat, they only
ramp up the power output when needed-thousands of times per second.
Considerably more efficient than traditional power supplies,
switching-mode power supplies are small and light, yet deliver ample
power.
Think of a Class H amp as a car with two engines (in amps, you call them
"rails"). One engine runs all the time. The other runs only when musical
peaks demand extra power output. An EPX Class H amp only generates a
fraction more power than is immediately needed while the output stage
operates at its maximum efficiency all the time.
And just like in today's hybrid cars, the efficiency of this dual system
is far greater than having one engine or rail that must operate all the
time. EPX amps don't waste power. Class H amps don't waste power,
require much smaller heat sinks and much lighter power transformers.
Accelerated Transient Response Delivers the Knock-Out Punch
It takes huge pulses of energy (current and voltage) to propel a woofer
cone out fast enough to match a bass beat. That's called Transient
Response and it's the holy grail of amp designers. By carefully
selecting transistors with extremely high slew rates and optimizing
other proprietary parts of our circuitry, our amps are able to react
instantly to even the most demanding electronic bass impulses. If the
woofers in your PA system can keep up, your audience will hear a tighter,
crisper, more natural sound.
Instead of operating relatively continuously like Class AB circuits,
Class H amps, which were first described in NASA technology (U.S. patent
3,319,175), feature rail tracking for effectively modulating the power
supply rails with only the peaks of the input signal. This technology
has revolutionized pro audio amp designs with its outstanding
performance and efficiency. When combined with switching-mode power
supplies that replace heavy toroid transformers, our new designs provide
more dynamic punch and, because they are so much more efficient, run
cooler and don't require huge, heavy heat sinks. |
