Setting The Gain; Bass Boost Control - Power Acoustik RAZOR RZR1-2500D Manual

Setting the Gain:

It is a fact that very few people, including professional installers, know how to set gains
correctly. Failure to do so yields higher distortion, a higher noise floor which decreases
dynamic headroom, less than optimum operating conditions for electronic equipment, and a
higher failure rate for both the electronic equipment and transducers alike.
While most people set this control by ear to how loud they want their music, this is not the
intent of this control. The range is from 0.25 volts to 6 volts. The control is meant for
matching the output of the source unit's signal voltage. For example, if you have a source
unit with low output voltage, you would probably have the control set reasonably high,
towards the 0.25V range. Many head units have 4 volts of output signal voltage which means
that your power would be set midway through the scope. If you happen to have a line driver
(signal booster) that yields 6 volts or more, you will set the gain at the minimum position
towards the 6V range.
In all of these examples, the amplifier will put out the total volume when properly level
matched. Setting the control above the appropriate point may cause damage to the
amplifier and speakers and result in poor sound quality and overall undesirable results.

Bass Boost Control:

The Monoblock amplifiers feature a variable Bass Boost control, centered at 45Hz. You can
adjust the amount of boost from 0dB to 18dB.
+20dB
+lDdB
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0dB
w
en
z
0
-l0dB
0..
en
w
-20d8
-30dB
FREQUENCY RESPONSE
A
/I I'
I\
35 80
10 45 100
FREQUENCY (Hz)
with
BASS BOOST ON
\
\
500 lK 5K 20K 50K
7