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MaxxBass
User Manual
17 pgs239.74 Kb0

Precision Power MaxxBass User Manual

MaxxBass
®
TABLE OF CONTENTS
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Why Use
®
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Why is
®
Better . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
What is
®
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
How does
®
Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
®
Signal Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Installation/Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
®
Outline and Dimensions . . . . . . . . . . . . . . . . . . . . . . .8
Wiring Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Wiring Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
®
Processor Settings . . . . . . . . . . . . . . . . . . . . . . . . . .13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
1
CONGRATULATIONS
Thank you for choosing
PrecisionPower
TM
audio equipment. At
PrecisionPower
TM
we proudly design, engineer and manufacture audio products for aftermarket car audio. Our award winning engineering team utilizes innovative technology to consistently deliver Absolutely State of the Art performance, sound quality, reliability, and value. This
PrecisionPower
TM
product reflects our commitment to offer you unpar alleled v ersatility and quality f or y ears of dependable service and listening enjoyment.
SERVICE
Do not attempt to service
PrecisionPower
TM
products yourself. Performing exploratory surgery on your audio equipment yourself will void the warranty.Many parts of your
PrecisionPower
TM
gear are custom built to our specifications. Our factory par ts are not made available to anyone else nor are they for sale. Our goal is to make sure that your
PrecisionPower
TM
will always sound as good as the
day it was purchased. Contact your authorized
PrecisionPower
TM
dealer about obtaining any warranty service through
PrecisionPower
TM
. (See Warranty on back cover).
(Record listing for Model, Serial Number, and Purchase Date)
Model _____________________ Serial Number _______________ Purchase Date _______________
CAUTION
The extended use of a high-powered audio system may result in hearing loss or damage. While
PrecisionPower
TM
systems are capable of "Concert Level" volumes with incredible accuracy, they are also designed for you to enjoy more reasonable levels all of the sonic subtleties created by musicians. Please observe all local sound ordinances.
2
WHY USE MAXXBASS
PrecisionPower
TM
will introduce the first
®
processor to
the automotive market. The
®
processor is ideal for improving the perceived bass response in door mounted speakers without upgrading the speakers or amplifiers.
®
provides subwoofer like performance with perceived
bass response to 30-40Hz on door mounted speakers. The
MaxxBass
®
Processor is recommended in two configurations.
(Please see Wiring Configurations for more details.)
1) Front Stereo Configuration One
®
Processor is used between the front channel source and front speaker amplifier to increase the bass response on only the front speakers. This is recommended to improve bass imaging in high performance systems with rear mounted subwoofers.
2) Dual Stereo Configurations For systems without rear subwoof ers, the user ma y pref er to use two
®
Processors, one for the front speakers and one for the rear speakers. Although not nearly as good bass performance as using a high performance subwoofer, this configuration will provide close to subwoofer lik e performance without the space requirements of a high performance subwoofer. This is a practical alternative for bass performance where a subwoofer system can not be added.
WHY IS MAXXBASS BETTER
MaxxBass
®
is NOT a bass boost technology. Bass boost technologies try to compensate for lack of bass frequency range by equalizing or increasing the relative volume of the frequencies near the speaker limit.
This increases amplifier and speaker excursion limits, which
can damage the system at high levels.
This destroys the intended frequency balance of music.
3
MaxxBass uses psychoacoustics to extend the perceived bass frequency response.
It is proven to provide up to 1.5 octaves of increased bass
range.
It does not change the frequency balance of the music and
sounds more natural than large bass boosts.
It does not require more amplifier power and speaker
excursion.
It has been proven over many years of use in professional
audio recording.
WHAT IS MAXXBASS
®
is a patented technology, which extends the bass frequency range by allowing listeners to perceive bass frequencies more than an octave below the physical limitations of speakers systems. In cars
®
allows door mounted speakers that typically drop off below 70-100Hz to play down another octave or more.
This is accomplished using the science of psychoacoustics on how we perceive sound.By building audio systems optimized for how we hear sound, significant performance improvements can be obtained. This is analogous to designing and building televisions that only display red, green and blue dots. When we view these displays our visual perception combines these dots to make a full color spectrum without needing to reproduce all the necessary color frequencies.
Unlike other bass technologies
®
delivers more perceived bass while simultaneously reducing the likelihood of damaging speakers and amplifiers.
®
also delivers this extended
bass without any perceived distortion.
®
technology has been used for years in mastering most of the world's most popular music.
4
5
HOW DOES MAXXBASS WORK
®
uses advanced digital signal processing based on the proven psychoacoustic Phenomenon of the Missing Fundamental.A basic description and a
®
Signal Flow diagram are
provided for interested users.
MaxxBass
®
first implements a crossover at the
MaxxBass
®
Frequency. The
®
Processor allows the choice of 60Hz,
generally suggested for 6-6.5" drivers, and 80Hz suggested for 4-
5.25" woofer drivers. The low pass filter (LPF) output of the crossover extracts the bass
signal which is below the bass frequency response of the system. This is the signal to be reproduced psycho-acoustically and only this signal receives the
®
processing. It is significant to note
that unlike bass boosts,
®
does not add or change the processing of higher frequencies that can be reproduced by the system.
®
does not change the artist's sound mix.
®
uses a patented digital signal processing algorithm to calculate precise harmonic content information which is added back into the LPF signal.The combined LPF and harmonics output is high pass filtered, thus removing the original bass signal.The processed signal is then added back into the original HPF signal and the final output provides a signal that sounds like the original, but no longer has un-reproducible low frequencies.
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