Precision Power MaxxBass Music Mixer User Manual
Contents
1. Front speakers In dash i D Recei LF with Virtual RF CD Receiver Subwoofer Front Rear Rear speakers ie Le RE with Virtual RR ass ass Subwoofer Power n Amplifiers NOTE As an option before beginning disconnect the negative terminal of the battery to prevent an electrical short to ground Reconnect the negative terminal only after all connections have been made WIRING PROCEDURES The next step is to connect the Power Ground and Remote IN OUT wires to your MaxxBass Processor The power wire should run from the mounting location through the vehicle to the battery or power distribution block Avoid sharp corners creases and sharp body parts When passing through any metal wall i e firewall etc a grommet must be used to prevent the wire from chafing and shorting to ground The ground wire should be of the same gauge wire as the power wire As a rule of thumb use as short length of wire as possible Find a location near the MaxxBass Processor that is metal the floor is ideal and clean an area about the size of a quarter to bare metal Drill a pilot hole in the middle of this area Terminate the wire with a ring connector and attach it to the bare metal using a 8 sheet metal screw and washer not supplied We suggest crimping and or soldering this connection After the connection is complete coat the area with silicone or some similar material to prevent rust from developing Fina2. TROUBLESHOOTING NO SOUND Is the POWER LED lit YES NO Check Input cables for signal by Check power and remote Connecting them straight to the turn on wire for voltage Subwoofer amplifier Make sure the ground wire is Secure ANY SOUND NOW YES NO Problem is in the Crossover Problem is elsewhere in the See your local Authorized system Check head Unit and PrecisionPower Dealer amplifiers SOUND IN ONE CHANNEL ONLY Reverse left and right RCA outputs for one band i e subwoofers SOUND IS NOW IN OPPOSITE CHANNEL SAME CHANNEL Reverse RCA inputs Problem is in the amplifier Speakers or associated wiring of the silent channel SOUND IS NOW IN OPPOSITE CHANNEL SAME CHANNEL Reverse RCAs to head unit Problem is in the Crossover Check Balance Control See your local Authorized PrecisionPower dealer SOUND IS NOW IN OPPOSITE CHANNEL SAME CHANNEL Problem is in the head unit Problem is in the RCA cables LOW OUTPUT FROM ONE BAND Check crossover frequencies and check gain control on the effected amplifier s STILL LOW OUTPUT See your local Authorized PrecisionPower dealer LIMITED TWO YEAR CONSUMER WARRANTY Directed Electronics Inc promises to the original purchaser to replace this product should it prove to be defective in workmanship or material under normal use for a period of two years from the date of purchase by the dealer as indicated by the date code marking of the product PROVIDED the produc
3. PrecisionPower Absolutely State of the Art Mobile Audio MaxxBass TABLE OF CONTENTS GongratulatioriS ak Bilgi ee LA AS ele e ite Mec us 2 puel m EE MEME KO EE ee ER ME E ROME 2 UIGENT ig 2 Why Use MaxxBass 0059 sani e Ba te ye fe anan Yl as 3 Why is MaxxBass Better 3 What is MaxxBass uisa Veet eu Rhee otal aga o bod das 4 How does MaxxBass Work 0c eee eee 5 MaxxBass Signal Flow ue utet eda ni be li ibne ire 6 ez LL ge gt Coa ee n ro Ett en rs itus Bend RT ii 6 SDOCITCSIIOPIS quet 25 5259 wind EE b o i abc eee 7 Installation MOUMING mersedes 7 MaxxBass Outline and Dimensions nnana naaa 8 Wiring Configurations 2 me ewes soe heres t opa ee ere Ex 9 Wiring Procedures sut ERES bU 10 ADU SC eyi e whe ka RSS 5i Ba Lotes qe Re aide TTT 12 MaxxBass Processor Settings eee eae 13 Troubleshooting TREE 14 CONGRATULATIONS Thank you for choosing PrecisionPower audio equipment At PrecisionPower 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 product reflects our commitment to offer you unparalleled versatility and quality for years of dependable service and listening enjoyment SERVICE Do not attempt t
4. ded for interested users MaxxBass first implements a crossover at the MaxxBass Frequency The MaxxBass 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 MaxxBass processing It is significant to note that unlike bass boosts MaxxBass does not add or change the processing of higher frequencies that can be reproduced by the system MaxxBass does not change the artist s sound mix MaxxBass 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 MAXXBASS SIGNAL FLOW Cross Over 60 80 Hz Input Signal Example 1 Jo 1000 LPF Harmonics MAXXBASS HPF Harmonics 60 80 Hz Processed Signal Example FEATURES Selectable MaxxBass Frequency Setting of 60Hz and 80Hz Green LED clip Red LED power indicator signal Gold 2 Channel in 2 channel buffered f
5. e amplifier power and speaker excursion e It has been proven over many years of use in professional audio recording WHAT IS MAXXBASS 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 MaxxBass 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 MaxxBass delivers more perceived bass while simultaneously reducing the likelihood of damaging speakers and amplifiers MaxxBass also delivers this extended bass without any perceived distortion MaxxBass technology has been used for years in mastering most of the world s most popular music HOW DOES MAXXBASS WORK MaxxBass uses advanced digital signal processing based on the proven psychoacoustic Phenomenon of the Missing Fundamental A basic description and a MaxxBass Signal Flow diagram are provi
6. e to dual male Y cord if mono input is used Front speakers In dash with Virtual RF CD Receiver ai Subwoofer Front Rear Maxx T LR RR Bass Subwoofer Power Amplifiers WARNING If you are using a source unit with bridged high powered or floating ground speaker outputs a suitable high to low level adapter must be used If you are unsure about your head unit see your local PrecisionPower dealer MAXXBASS PROCESSOR SETTINGS To achieve proper performance it is important to set or tune the settings on the MaxxBass Processor to the final system This section recommends initial settings and the users can then further adjust these for optimal listening 1 CROSSOVER The CROSSOVER control implements a 24dB octave low pass filter on the input Set the CROSSOVER control to OFF if the amplifier and speakers after the MaxxBass Processor are full range speakers or if passive crossovers are used in the speakers Set the CROSSOVER control to ON if the MaxxBass Processor is only used on a woofer channel and separate amplifiers and speakers are provided for tweeters 2 FREQUENCY The FREQUENCY control should be set to 60Hz for 6 5 inch door speakers and 80Hz for 5 25 to 4 0 inch door speakers 3 INPUT The INPUT control is a signal attenuator for high voltage inputs The CLIP LED can be
7. etails 1 Front Stereo Configuration One MaxxBass 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 subwoofers the user may prefer to use two MaxxBass 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 like 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 e This increases amplifier and speaker excursion limits which can damage the system at high levels e This destroys the intended frequency balance of music MaxxBass uses psychoacoustics to extend the perceived bass frequency response It is proven to provide up to 1 5 octaves of increased bass range e It does not change the frequency balance of the music and sounds more natural than large bass boosts elt does not require mor
8. l bits or screws MASSBASS OUTLINE AND DIMENSIONS 5 90 n d5 cm NTENSITY 453i 248 n 15cm 63cm m 60Hz OFF FREQUENCY CROSS OVER GND REM 12V REM OUT Oot n Z OO OO ml NPUT OUTPUT POWER REMOTE WIRING CONFIGURATIONS The MaxxBass Processor is recommended in two different configurations 1 Front Stereo Configuration The figure below illustrates the wiring for a front stereo configuration One MaxxBass Processor is used between the front channel source and front speaker amplifier to increase the bass response only on the front speakers Implementing MaxxBass on the front speakers will increase the perceived bass response of these speakers down to 30 40Hz providing a Virtual Subwoofer The listener will achieve better bass balance and imaging with a rear mounted subwoofer or trunk mounted speakers with sufficient bass response Front speakers In dash with Virtual RE CD Receiver di Subwoofer Front Rear Maxx p LR RR Bass Subwoofer Power 2 Amplifiers n 2 Dual Stereo Configurations For systems without rear subwoofers the user may prefer to use two MaxxBass Processors one for the front speakers and one for the rear speakers The units should be wired between the in dash CD Receiver and the power amplifiers as shown below
9. lly the remote IN wire needs to connect to the Amplifier Remote lead of the head unit This wire supplies a 12 volt signal to the MaxxBass Processor when the main System is activated The remote OUT wire is to be connected to the remote input of the source amplifier or to and optional relay to activate multiple amplifiers Once you have routed the power ground and remote wires through the vehicle it is time to connect the wires to the MaxxBass Processor Be sure that you have not reconnected the ground cable to the negative post of the battery NOTE Refer to the diagram of the system shown in MaxxBass Outline and Dimensions for connection points Cut off the excess wire and using the wire strippers strip the power ground and remote cables about 1 8 inch Locate the power ground and remote IN OUT wires of the power plug supplied We again suggest crimping and or soldering each connection separately to insure no damage to the unit or the audio system Check that each connection is tight If the wires are secure the plug may be inserted into the MaxxBass Processor INPUT To use Speaker Level Inputs common ground head units only connect RCA plugs to the front or rear speaker leads as shown NOTE It is important to connect an input signal to both RCA input jacks if a stereo amplifier is used otherwise the connected channel receives full range and the disconnected channel will receive only the harmonics Use a RCA femal
10. o service PrecisionPower products yourself Performing exploratory surgery on your audio equipment yourself will void the warranty Many parts of your PrecisionPower gear are custom built to our specifications Our factory parts are not made available to anyone else nor are they for sale Our goal is to make sure that your PrecisionPower will always sound as good as the day it was purchased Contact your authorized PrecisionPower dealer about obtaining any warranty service through PrecisionPower 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 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 WHY USE MAXXBASS PrecisionPower will introduce the first MaxxBass processor to the automotive market The MaxxBass processor is ideal for improving the perceived bass response in door mounted speakers without upgrading the speakers or amplifiers MaxxBass 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 d
11. rected postage pre paid with consumer s name telephone number and address authorized dealer s name and address and product description IN ORDER FOR THIS WARRANTY TO BE VALID YOUR UNIT MUST BE SHIPPED WITH PROOF OF INSTALLATION BY AN AUTHORIZED DIRECTED DEALER ALL UNITS RECEIVED BY DIRECTED FOR WARRANTY REPAIR WITHOUT PROOF OF DIRECTED DEALER INSTALLATION WILL BE COVERED BY THE LIMITED 1 YEAR PARTS AND LABOR WARRANTY Note This warranty does not cover labor costs for the removal and reinstallation of the unit BY PURCHASING THIS PRODUCT THE CONSUMER AGREES AND CONSENTS THAT ALL DISPUTES BETWEEN THE CONSUMER AND Directed SHALL BE RESOLVED IN ACCORDANCE WITH CALIFORNIA LAWS IN SAN DIEGO COUNTY CALIFORNIA Designed and Engineered in the USA by Z ELECTRONICS INC 2004 Directed Electronics Inc All rights reserved G41830 01 04
12. t was installed by an authorized Directed dealer During this two year period there will be no charge for this replacement PROVIDED the unit is returned to Directed shipping pre paid If the unit is installed by anyone other than an authorized Directed dealer the warranty period will be 1 year from the date of purchase by the dealer as indicated by the date code marking of the product During this 1 year period there will be no charge for this replacement PROVIDED the unit is returned to Directed shipping pre paid This warranty is non transferable and does not apply to any unit that has been modified or used in a manner contrary to its intended purpose and does not cover damage to the unit caused by installation or removal of the unit This warranty is void if the product has been damaged by accident or unreasonable use neglect improper service or other causes not arising out of defects in materials or construction ALL WARRANTIES INCLUDING BUT NOT LIMITED TO EXPRESS WARRANTY IMPLIED WARRANTY WARRANTY OF MERCHANTABILITY FITNESS FOR PARTICULAR PURPOSE AND WARRANTY OF NON INFRINGEMENT OF INTELLECTUAL PROPERTY ARE EXPRESSLY EXCLUDED TO THE MAXIMUM EXTENT ALLOWED BY LAW AND DIRECTED NEITHER ASSUMES NOR AUTHORIZES ANY PERSON TO ASSUME FOR IT ANY LIABILITY IN CONNECTION WITH THE SALE OF THE PRODUCT DIRECTED HAS ABSOLUTELY NO LIABILITY FOR ANY AND ALL ACTS OF THIRD PARTIES INCLUDING ITS AUTHORIZED DEALERS OR INSTALLERS Unit must be returned to Di
13. ull range out RCA connectors 4 pin locking power plug Input connector for outboard MaxxBass Intensity controller Remote and on box intensity controls Intensity adjustment from O to full effect 18dB octave high pass filter output at 60 80Hz Defeatable 24 dB octave low pass filter at 100Hz on the input SPECIFICATIONS Frequency 20hz 20kHz Signal to Noise Ratio gt 85dB Separation 65dB 1kHz Crossover Slope 24dB octave Input Impedance 20 000 Ohms Input Sensitivity variable 300mV to 3V peak to peak Output Level variable 300mV to 5V peak to peak Supply Voltage 9 to 16 VDC INSTALLATION MOUNTING NOTE As an option before beginning disconnect the negative terminal of the battery to prevent an electrical short to ground Reconnect the negative terminal only after all connections have been made To prevent damage to the MaxxBass Processor while driving mount in a secure place Choosing the appropriate location will depend upon your vehicle and the complexity of your system design Typical mounting locations include the trunk and passenger compartment floor or under seat Never mount the MaxxBass Processor in a location that would subject it to immersion or exposure to water Once a location has been chosen securely mount the MaxxBass Processor with the four mounting screws Be Careful Inspect the area underneath to be sure you are not drilling into wires brake or fuel lines etc that could be damaged by the dril
14. used to help set the maximum input level setting prior to clipping Start with INPUT control near MIN position and increase INPUT level until the Clip LED lights occasionally 4 OUTPUT The OUTPUT control provides a linear gain on the output to help match signal levels to power amplifiers Start with OUTPUT control near MIN position and adjust accordingly to match levels with other system components 5 INTENSITY The INTENSITY control provides an input to the MaxxBass algorithm on the level of the effect Start with INTENSITY near MIN position and increase until the desired level of bass effect is obtained The INTENSITY control on the MaxxBass Processor and Remote Unit have identical functionality At the MIN position on the INTENSITY control the MaxxBass algorithm is in bypass so that no MaxxBass processing occurs 13 When the Remote INTENSITY control is plugged into the MaxxBass Processor the Remote INTENSITY control become active and the INTENSITY control on the MaxxBass Processor is disabled This allows the user to install a remote control in a location different than the MaxxBass Processor and place in a more convenient position for the listener such as underneath the dashboard or in the glove compartment The INTENSITY control on the MaxxBass Processor system is only active when the Remote INTENSITY control is not plugged in This control is provided for users who do not wish to use the Remote INTENSITY control
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