Alphasonik PEQ70E - Manual (Page 4)

Thank you for purchasing this Alphasonik product. Alpha-
sonik products are specifically engineered and designed for the mobile
audio environment. This manual contains important information about
installation, set-up procedures and integrating your new Alphasonik
product into your vehicle. With proper care and installation, your new
product will provide you with many years of high performance listening
enjoyment. We recommend having an Authorized Alphasonik Dealer
install your new product for optimal performance and to take advantage
of our warranty program. Before installing your new product, please
read through the manual to fully understand the application.
Before making any electrical connections, make sure that
you disconnect the battery’s ground cable to prevent the possibility of
short circuits or damage to your electronic equipment. If your vehicle’s
stereo (head unit) comes with an Anti-theft code, DO NOT disconnect
the battery. If you have the access code for the stereo (head unit),
please refer to the vehicle’s owner’s manual.
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There are basically three types of equalizers: graphic, para-
metric, and a hybrid of these two, often referred to as paragraphic. Ad-
ditionally, there are passive equalizers, which have no gain, active gain
pre-amps, which have a again stage usually with a volume control, and
booster equalizers which we won’t consider here since they are inferior
passive equalizers with inexpensive IC amplifier built-in.
As in state-of-the-art home audio systems the optimum system
requires a dedicated pre-amp with enormous gain to drive the various
power amplifiers. Since home audio amplifiers do not have adjust-
able sensitivity, they require a high output pre amplifier to drive them to
maximum levels.
The unit is the first production pre amplifier to incorporate a
specific bandwidth parametric equalizer with shelving control with 18dB
boost or cut on its four bands, it can compensate for the four acoustic
anomalies unique to the automotive environment. This unit easily be-
comes the “Mission control Center” of any high end automotive sound
system.