Zapco ST-series D User Manual
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Mission Statement
Committed to Excellence
Zapco is dedicated to the pursuit of audio fidelity. Our prime objectives are to design
and manufacture audio products of unsurpassed quality, to provide unparalleled support and
service for these products, and to conduct business in a manner that will enhance the quality of
life for all involved.
Experience: Knowledge from Doing
There is absolutely no substitute for experience; that is a simple fact of life
. Another
simple fact is that Zapco has, for over forty years, been the leader in defining quality standards for
the car audio industry. These years of experience have led to a thorough understanding of the
challenges that are unique to the world of car audio. Zapco's relentless quest for sonic purity
consistently yields imaginative designs that utilize the most innovative technologies. The resulting
products set the criteria by which all others in the industry are judged.
The ST-Series D Full range Class D Amplifiers
Zapco introduced the industry to great sounding Class D amplifiers some 10 years ago
with the famous
C2K-9.0XD. In those days, the filtering and control systems needed to make Zapco
sound quality in a Class D amplifier meant it had to be expensive and it had to be big.
Today's technology, however, has allowed us to develop a line of great sounding full
range Class D amps at an affordable price range and in a size that's an easy fit in today's smaller
cars. Small car doesn't have to mean small sound, and you won't have to give up the back seat for
an amplifier. And even motorcycles. In fact, at only 6.3" x 6.7", the ST2D is the ideal amplifier for a
motorcycle. Small size, big power. And talk about POWER! This tiny little monster is going to
give you 400watts RMS. With that kind of power
on your bike, you're going to need louder pipes,
and, since these little power houses are Zapco amps, you know they're going to sound great.
Just like with the Z-Series and the ZX-Series, we kept the ST-D series simple. The feature
set is kept to the essentials. They all have 18dB crossovers, speaker level inputs, and optional
remote level controls, but, they don't have chrome or fancy paint jobs, and they don't look like
hot rod engines or computers. They look like car audio amplifiers. We put our efforts (and your
money) into great sound and reliable power.
Even though they're Class D they have less than 0.05% THD+noise and 90dB signal to
noise ratio. After all, loud is no good unless it sounds great as well. And these new amplifiers
sound awesome. Audition one today and you'll know what we mean.
And, though the 2ch, 4ch, and 5ch powerhouses have way more punch than you'd expect
from such a diminutive chassis, we know you're going to want dedicated bass amps as well. And the
ST-D series has 'em! You can choose 500 watts at 1 ohm or 1,000 watts at 1 ohm, and even the 1,000
watt amp is less than 10" long.