SAS BAZOOKA MARDI GRAS Manual De Instalación página 17

A
.
(Please note: If you intend to use the MGA
configuration, it is necessary to set the crossover control to the "FLAT" setting in order to
receive full range output)
The "MGA" amplifiers are equipped with a built-in crossover network allowing you to select
the crossover type (i.e. Low-Pass or Hi-Pass) and the desired crossover point. For example
if you wish to drive a pair of subwoofers, you can select the "Low Pass" setting on the
amplifier to filter out high frequencies. This will send only low frequencies to your
subwoofers (see example settings below).
Select the crossover type on the
amplifiers side panel.
(Low-pass is selected in this example for subwoofers)
FILTER
LPF FLAT HPF
Fine tune the amplifier's input sensitivity.
LEVEL
MIN MAX
not a volume control and you will not get more power out of the amplifier in the maximum
position! It may seem to deliver more output, but actually the system is only playing louder
faster as you turn the volume control on the radio. Ideally, to properly level match the
system the goal is to achieve maximum output from the amplifier without distortion at
about 3/4 of the volume control.
To determine if the amplifier's gain is set properly, turn the system on and slowly increase
the volume control. You should be able to use about 3/4 volume before the system gets loud
but not distorting. It is very important when making these adjustments that you do not
over drive the speakers (at point of distortion) this will cause permanent damage to the
speakers. If you are unable to achieve 3/4 volume before distortion you will need to
adjust gain control (in this case you would reduce the gain). The gain controls should be
adjusted very slowly. It may help to have another person to assist you by adjusting the
gain controls while you listen for distortion.
DJUSTING THE X-OVER AND BASS
Select the crossover
point for your speakers.
F
INE TUNE THE SYSTEM
T h e g a i n s e n s i t i v i t y c o n t r o l f o r t h e " M G A "
amplifier is located on the side panel.
has been included to allow adjustment to properly
match the output of the radio. This is one of the most
misunderstood adjustments. By rotating the control in
the clockwise direction, the amplifier's input will
become more sensitive and the music will play louder. This is
265, MGA2100 and MGA2150
You can add 6 or 12dB bass boost
by switching the Bass Boost control.
50Hz 250Hz
X-OVER
16
in the Tri-mode
BASS BOOST
6dB 0dB 12dB
This gain control
MGA AMPLIFIERS