AudioControl DQS Stereo Equalizer User Manual
Contents
1. Owner s Enjoyment Manual 11 AudioControl D Level Matching If you have ever listened to a friend s killer car audio system and heard lots of hiss clicks or pops then you have experienced an improperly level matched system When a performance autosound system is properly level matched you should get the maximum output from your source unit and amplifiers without any clipping or that annoying hiss The following steps will help guide you through the process although at the end of the day your ears will be your guide 1 Set your source unit s fader and balance controls to their center positions 2 Disconnect the output RCA connections be tween your DOS and the amplifier s otherwise get some earplugs 3 Start playing some relatively dynamic music and set the volume on your source unit to about 3 4 of maximum You should not hear anything at this point If you are hearing music go back to step 2 If you are hearing voices go see a doctor 4 Starting with the DOS Input Level controls adjust the control knobs until the Input Maxi mized LED begins to flicker steadily with the music 5 Now adjust the output level control until the 2 volt or 5 volt light starts to flicker You will want the output voltage to match up to your amplifiers input gain levels If you don t know how much this is ASK the amplifier manufacturer or read the owner s manual of the amplifier 6 Very Important Set the inpu2. ton The latt s were hot and the wheat beers were cold like our weather AucdioCcontrol 22410 70th Avenue West Mountlake Terrace WA 98043 USA Phone 425 775 8461 Fax 425 778 3166 www audiocontrol com Onner s Enjoyment Manual
3. gth of Digital DHS Six Channel Digital Equalizer Onmner s Enjoyment Manual Aud ioControl 22410 7Oth Avenue West e Mountlake Terrace WA 98043 USA Phone 425 775 8461 e Fax 425 778 3166 wwwaudiocontrol com AudioControl This page was intentionally Onner s Enjoyment Manual The Strength of Digital Table of Contents Intt OOUGCtOH o gor eire Rok e COR CE eb bor 1 Key Features and Highlights nares 2 Quick Installation Information 4 A Guided Tour of the DOS 6 Installation PEORES AURA ORG OR eje Kev EX erus 8 Placement and Mounting sees 8 Power WIRING E Xa eh 9 Audio Wiring and System Diagrams 9 11 Level Matching cic eet Copa ee ia eti fa eer does 12 Navigating the DOS Menu Screens 13 Equalization Adjustment ee 18 612107 RO d e RO NE 20 Warranty Ce ete 22 SDOCITCAtIODS ooh Operi terat 23 Onner s Enjoyment Manual AudioControl Onner s Enjoyment Manual The Strength of Digital Introduction Welcome to the world of AudioControl digital signal processing A magical combination of AudioControl s lengthy experience in perfor mance signal processing design combined with state of the art Digital Signal Processing DSP technology You now have in your possession th
4. can now apply boost or cut using the and controls to the frequency you selected in the previous step Once you have made your equalization settings you will want to tap the Select button go to the Memories screen and save your settings in one of the eight memory locations Keep in mind you have the ability to equalize your Front Rear and Subwoofer Center speakers individually MODE Front PEOI Rear PEO1 and S C PEO1 FrontPEGi Freg i 68k Width 1 3 Lyvl dB Figure 8 Front PEQI screen PEGI Width 1 3 Figure 9 Rear screen Rear Freq 1 68k Lyvl dB SC PEGI Freq 1 66k Ly1l 89 Width 1 3 Figure 10 S C PEOlscreen Besides having a 30 band graphic egualizer your DOS also has two fully programmable parametric bands for each pair of channels These allow you to select a freguency apply boost or cut and change the bandwidth or of the filter Front mode allows you to set the con trols for the first of the front parametric egualizers while FrontPEO2 mode lets you change the settings for the second parametric bands Freq uency This corner of the screen indi cates which frequency you are boosting or cut 16 Onner s Enjoyment Manual The Strength of Digital ting If you wish to select another freguency tap the left or right arrow buttons until the cursor is flashing on the number next to Freq Then use the and controls to select t
5. digital signal processor that was specifically designed for equalization and other dynamics processing Matching 24 bit A D D A converters are also incorporated for maxi mum sound quality 2 Onner s Enjoyment Manual The Strength of Digital Bulletproof Warranty The most impor tant feature of all Every AudioControl product is selflessly designed and manufactured by the occupants of our rainforest factory We take every effort to ensure that you will have many years of enjoyment out of your DOS To ensure the perfor mance of this new Digital product we highly recommend that you allow your authorized AudioControl dealer to perform the installation Not only do they have all the right knowledge and tools but also in the unlikely chance your DOS should stop working we will back it witha limited five years parts and labor warranty Should you choose to install it yourself we will still give you a one year parts and labor warranty To activate your warranty you need to FILL OUT AND SEND IN YOUR WARRANTY CARD We also recommend that you save your invoice or sales slip as proof of installation and ownership Not only is it necessary for warranty purposes but should your DOS disappear one day while your car is parked at your local latte stand you will find insurance companies very unforgiving without proof of purchase gt year Warran ty Onner s Enjoyment Manual 3 AudioControl QUICK INSTALLATION INF
6. take a few days to enjoy your DOS before sending in the warranty card and comments Conditional doesn t mean anything ominous The Federal Trade Commission tells all manufac turers to use the term to indicate that certain conditions have to be met before they ll honor the warranty If you meet all of these conditions we will warrant all materials and workmanship on your DOS for one year from the date you bought it five years if it is installed by an autho rized United States AudioControl dealer We will fix or replace it at our option during that time Here are the conditional conditions 1 You have to fill out the warranty card and send it to us within 15 days after purchasing your DOS 2 You must keep your sales receipt for proof of purchase showing when and from whom the unit was bought We re not the only ones who require this so it s a good habit to get into with any major purchase 3 Your DOS must have originally been pur chased from an authorized AudioControl dealer You do not have to be the original owner but you do need a copy of the original sales slip 4 You cannot let anybody who isn t A the AudioControl factory B somebody authorized in writing by AudioControl to service your DOS If anyone other than A or B messes with your DOS that voids your warranty 5 The warranty is also void if the serial number is altered or removed or if your DOS has been used improperly Now that sounds like a
7. will want to spend a few minutes familiarizing yourself with the various modes Although the DOS has one main screen there are eleven sub menu screens that allow you to access and program all of the various functions of your DOS Figure 5 shows you how the Menu Tree of your DOS flows 13 Onner s Enjoyment Manual AudioControl uc or ue bi directional Select one directional 4 Hl Dim Back to __ Figure S DOS Menu Tree 14 Owner s Enjoyment Manual The Strength of Digital 1 Digital Status Display This cool blue screen will tell you which mode your DOS is in 2 Select Every time you tap this button you will scroll through the various modes in your DOS 3 and Navigation Buttons Depending upon where your cursor is flashing these buttons will allow you to change the fre quency apply boost cut and vary the bandwidth or Q of your equalization filters 4 Left and Right Navigation Buttons Within each mode there are several sub functions i e Freq Lvl Width etc that you can access using these buttons By tapping on these buttons and watching the flashing cursor you can navi gate through each V aa function on the screen AudioControl Figure 6 DQS main menu screen 2 MODE Front Rear SubCtr EQ Front EG Freg L 608 o lt Figure 7 Graphic EQ Screen ikHz R tddE Your DOS has 30 built in gr
8. your boost levels are not overly boosted Still Sounds Distorted Look at the frequen cies that you have selected for FrontPEO1 and FrontPEO 2 and see how much boost or cut you have applied Then look at those same frequen cies on your Graphic EQ If you have boost ap plied to the same frequencies on both types of equalizers there is a strong chance you are overdriving your speakers and amplifiers at that frequency Output Voltage LEDs Don t Light Up If your system is playing music but none of the output LEDS are on there is a good chance that the output voltage of your source unit is not that strong Now before you call us and say The guy at the store said my radio has high voltage out put you might want to face the fact that there is Engineering Voltage and there is Marketing Voltage Without picking on any particular source unit remember that you do get what you pay for 20 Onner s Enjoyment Manual The Strength of Digital UNDER THE COVER 1 Input Grounding For many systems you can leave this jumper in the UNBALANCED position In other systems the source unit may look for a ground through the RCA connection to the amplifier and create a ground loop which in turn can cause a whine not the type that comes in a bottle in your system In that event you should set at least one of the three jumpers to the BALANCED position 2 Ground Isolation Selector Occasionally alternator noise may appear in a system
9. ORMATION For those of you short on time but high on ambi tion we offer the following section to speed up your installation of the DOS 1 The DOS needs to be installed in the signal path between your source unit and your external amplifier s If this is not obvious to you quickly pack up your DOS and run to your nearest autho rized AudioControl dealer to have them perform the installation You will thank us later 2 Physically mount the DOS in a location that keeps it away from soda spills food crumbs and curious fingers However you will want to select a location that allows you to see the display and access the equalization controls during setup 3 Hook up 12 volt power ground and remote turn on If you need to know more then read on Heck if you don t think you need to know more you should still read on because you can never know too much 4 Adjust the Input Level control on your DOS to match the source unit s output and then adjust the Output Level controls to match your ampli fier inputs Note You will want to turn the gains on your amplifiers DOWN to maximize your systems perfor mance 5 Now comes the fun part Set your equalization controls to where your system sounds the most balanced yet dynamic More about this in the section titled Adjusting Your Equalizer and you thought you would not have to read the rest of the manual Hah 6 Last but not least you will want to save your system se
10. a condition called Md le 25 315 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1K 1 25 1 6K 2K 2 5 3 15K 4K 5 6 3K 8K 10K 12 5K 16K 20K speakerus explodus which is not pretty to hear or watch Figure 13 Sample RTA curve Onner s Enjoyment Manual 19 AudioControl and balanced as possible Too much boosting can make you feel like you are listening to your sys tem in a tile bathroom Not enough energy in the midrange sounds empty and dry Treble 3KHz and Up If midrange is the cake then these high or upper frequencies are the frosting Many autosound systems start a gradual decline in this area which is why speaker place ment is very important The DOS only gives you a few controls in this area because too much boost ing can really make a speaker sound unnatural TROUBLESHOOTING No Power If the blue display on your DOS will not turn on check to make sure that the power wire and remote turn on wires are connected properly or a fuse has not blown System Sounds Unbalanced Check your graphic and parametric equalization settings to make sure that one channel is not dramatically different than another Sounds Distorted Should your system sound distorted or your speakers are moving way too much you should make sure you have your levels matched properly and that your amplifier gains are set at minimum If this checks out okay you will want to look at your EQ controls to insure that
11. aphic egualization filters for each channel These freguencies happen to match those on the AudioControl SA 3055 real time analyzer In the Graphic EO mode you can select any of the 30 freguencies one at a time and apply boost or cut The menu screens for your graphic egualizers are labeled Front EO Rear EO and SubCtr EO respectfully In addition you can select whether you want the equalization controls to affect the left and right channels individually or control both channels at the same time Freq uency This corner of the screen indi cates which frequency you are boosting or cut ting If you wish to select another frequency tap the left or right arrow buttons until the cursor is flashing on the number next to Freq Then use the and controls to select the frequency to which you wish to apply boost or cut Onner s Enjoyment Manual 15 AudioControl Single or Dual Channel Equalization After you have selected a frequency to equalize you must decide whether you wish to equalize the left channel the right channel or both channels simultaneously If you are a first time user we suggest you equalize both channels together at first and then individually Use the arrow keys to move the cursor to one of the following positions L Equalizing on the left channel gt o lt Equalizing both channels simultaneously R Equalizing on the right channel When the cursor highlights this screen you
12. because the source unit and amplifier are using different grounding schemes To help in this situation we have provided alternative grounding connections Make sure your system is turned OFF before you move these jumpers shipped options Input Grounding Unbalanced Balanced Ground Isolation Isolated 200 ohms or Ground Choice of beverage Micro brew Latte Owner s Enjoyment Manual 21 YOU LIKE THE DOS YOU LL LOVE The AudioControl Digital Dash Control or DDC as it is called by its closest friends is an optional remote mountable control for your DOS The DDC can be installed almost anywhere in your vehicle and then connected to your DOS via cable This allows you to make all of your egual ization settings from the convenience of your front seat as well the chassis of your DOS In addition with the DDC you can see many col ors without any hallucinogenics by changing the display colors and backlighting AudioControl DDC Digital Dash Control AudioControl And now a word from the legal department THE WARRANTY People are scared of warranties Lots of fine print Months of waiting around Well fear no more this warranty is designed to make you rave about us to your friends It s a warranty that looks out for you and helps you resist the temptation to have your friend good with electronics try to repair your AudioControl product So go ahead read this warranty and then
13. big loophole but here is all we mean by it Unwarranted abuse is A physical damage don t use the DOS for a jack stand B improper connections 120 volts into the power jack can fry the poor thing C sadistic things This is the best mobile product we know how to build but if you mount it to the front bumper of your car some thing will go wrong 22 Owner s Enjoyment Manual The Strength of Digital 6 If an authorized United States AudioControl dealer installs your DOS the warranty is five years otherwise the warranty is one year Assuming you conform to 1 through 6 and it really isn t all that hard to do we get the option of fixing your old unit or replacing it with a new one LEGALESE SECTION This is the only warranty given by AudioCon trol This warranty gives you specific legal rights that vary from state to state Promises of how well the DOS will perform are not implied by this warranty Other than what we have covered in this warranty we have no obligation express or implied Also we will not be obligated for direct or indirect consequential damage to your system caused by hooking up the DOS Failure to send in a properly completed war ranty card negates any service claims DOS SPECIFICATIONS specifications are measured at 14 4 VDC standard automotive voltage As technology advances AudioControl reserves the right to continuously change our specifications like our weather Maximum i
14. but you might consider adding a line driver to your system 4 Output Level Controls Although your DOS has the ability to increase your signal voltage your amplifiers may not necessarily accept that much signal These controls allow you to regulate the proper amount of pre amp signal from the DOS to the amplifiers 5 Equalization Overload Indicator This convenient LED indicates when the DSP digital signal processor of your DOS is clipping or distort ing The usual cause of this is having the Input Level turned up too high or you have to much overall boost on the various frequencies of your equalizer 6 Select This button allows you to select one of the various equalization display or memory modes of your DOS 7 Navigation Arrows These multi func tion buttons perform a number of duties depend ing upon which mode your DOS is in You can do anything from applying boost or cut to your equalization filters to changing the display bright ness However if you get the high score you cannot enter your initials 8 Output Voltage Indicators These brightly colored LEDs indicate the level of signal voltage that is coming out of the various outputs of your DOS Use these to assist in level matching your source unit with your amplifiers 9 Outputs These RCA connectors should be connected to the next component s after the DOS usually an amplifier Do not connect any speakers directly to your DOS or to any home appliance
15. ctor of your DOS Connect it to a good constant source of 12 volts we suggest the battery fused at 2 amps Ground Connection Use the same gauge wire or larger as you did for the positive connector and run it from the Ground connector on the DOS to the negative terminal of the battery a ground bus or a verified ground location The factory head unit ground is not not not a good ground When the electrical connections are complete you may now reconnect the negative terminal to your battery Onner s Enjoyment Manual 9 AudioControl Head Unit Amplifier Subwoofer Front 4 channel Amplifier Figure 3 Six Channel DQS System Rear 10 Onner s Enjoyment Manual The Strength of Digital Video Monitor Head Unit Amplifier Rear Speakers Amplifier Center Speaker Amplifier Subwoofer Center Amplifier Front Figure 4 DQS Car Theater System Speakers
16. do not have sunshine Bass is one of the more critical areas and it is also one of the most difficult to properly reproduce Most people prefer their bass frequencies to be 6 to 9 dB louder than the rest of their system although there are some crazy folks that prefer their bass substantially louder The key in this area is to have enough speakers and power to produce the amount of bass you Midbass 100 Hz to 300Hz The phrase too much of a good thing can certainly apply to the midbass frequencies This is the transition area of the audio spectrum that is an octave above your sub bass frequencies and several octaves below your midrange Most autosound systems have too much mid bass due to the fact that speakers mounted in the doors or kick panels cause reso nances or peaks in the response curve These peaks in the mid bass can actually mask or block sounds in the all important midrange area causing your system to sound dull and lifeless Midrange 300Hz to 3kHz Musical instru ments vocals mid range percussion and many things we associate with imaging and staging happen in this area of the bandwidth For that reason you will want to keep this area as smooth p D s desire But don t use the SA 3055 Real Time Spectrum Analyzer SPL Meter AudioControl controls on the DQS to try and force your speakers to produce RTA SPL 7 m A sounds they can t Too 0000 much bass boost creates
17. e DOS an extremely powerful six channel thirty band one third octave stereo graphic and para metric digital equalizer Whew try saying that fast a few times Even better the DOS has a total of 192 equalization controls making it an incredible addition to any multi channel system even car theater Whether you are a die hard sound off competitor or simply enjoy great music you will definitely appreciate how the DOS makes your performance autosound system sound even better Now before you start salivating too much just thinking about the benefits of the DOS take a few minutes to sit back have a latte decaffeinated if necessary and read through this manual It con tains lots of useful facts and information and besides we spent a lot of time writing it KEY FEATURES OF THE DOS Here are some of the cool features that are enclosed in this magical box e Six input and output channels e 30 bands of constant Q equalization on each channel Two fully adjustable parametric equalizers per pair of channels Fight non volatile memories e 24 bit digital signal processing Onner s Enjoyment Manual 1 AudioControl FEATURES AND HIGHLIGHTS Six Channels Of Input and Output The DOS is AudioControl s first digital car audio equalizer with six input and output channels making it ideal for a multitude of applications Whether you are designing around a source unit with multiple outputs or you have a full blown sur
18. he frequency to which you wish to apply boost or cut Lvl When the cursor highlights this part of the screen you can now apply boost or cut to both channels using the and controls Please note that you do not have individual channel control using the parametric equalizers Width This control lets you select how wide of an area each of the DOS s parametric bands affects You can choose a real narrow bandwidth like 1 12 th of an octave or go as wide as three full octaves MODE Memories This screen allows you to save or recall settings to or from one of the eight memory locations Using the Left and Right arrows will cause the cursor to highlight one of the following func tions Recall When the cursor is flashing next to this word you have the ability to recall one of the eight memories Push the or buttons to scroll through the memories and select a memory to recall Onner s Enjoyment Manual Recall 1 Save 1 Memories Figure 11 Memory screen Save Once you have made your equalization settings you will want to save them in one of the eight memory locations When the cursor is flashing next to the word Save use the or buttons to select amemory location Once you have selected a memory location tap either the Left or Right button and the cursor will move to the bottom left of the screen between N and Y Tap the button to complete the saving p
19. nput level 7 5 Vrms Maximum output level 7 5 Vrms Output tisi ep e Re or ae Nji 10dB Frequency response eee 10Hz 22kHz Total harmonic distortion eese 0 01 Signal to Noise ratio esee 105dB Balanced input noise rejection 60dB Input Impedance oem 20k Ohms Output Impedance ee 150 Ohms Graphic Equalization Controls 30 bands 25 Hz 20 kHz ISO 1 3 octave centers Parametric Equalization Controls 2 bands 25 Hz 20 kHz ISO 1 12 octave Adjustable Centers Parametric Equalization Bandwidth 1 12 to 3 octaves Equalization boost cut esee 12 dB Power supply High headroom PWM switching Power draw tit he ets 600mA Recommended fuse rating esee 2 Amp ea A 1 25 W x 9 9 D x 7 H Weight nornir ER RE mi 3 5 lbs Country of origin USA Owner s Enjoyment Manual 23 AudioControl 2004 AudioControl a division of Electronic Engineering and Manufacturing Inc rights reserved AudioControl Making Good Stereo Sound Better DOS DOX DOT DDC and DXS are all trademarks of Electronic Engineering and Manufacturing Inc This manual was conceived designed and written on several bleak windy and dreary rain drenched days at our home in the Pacific Northwest Rainforest outside of Seattle Washing
20. rocess or tap to quit Please note that while you are RECALLING or SAVING a memory the cursor will stop blinking Once the processor has SAVED or RECALLED all your settings it will begin flashing again un 17 AudioControl MODE Display Display Bright Figure 12 Display brightness screen Dim In this mode you have the ability to change the brightness levels on the display of your DOS Using the left and right navigation buttons you can toggle back and forth between Bright and Dim Once you have selected a brightness level you are comfortable with tap the Select button and your last brightness setting will be retained ADJUSTING THE EOUALIZER When it comes to music everyone taste is different Some people want pounding bass and crisp blood curdling highs Others may prefer a flat response whatever the heck that is At the end of the day most people just want their system to sound balanced just like it did in the store or their buddy s car The following egualization guidelines should help you achieve your own personal audio nirvana 1 For optimum performance get your hands a test compact disc that contains pink noise anda good quality RTA real time analyzer we happen to know someone who makes a really good one If you cannot locate an RTA you probably want to have your authorized AudioControl dealer perform the equalization adjustments as they will likely have an analyzer You can ce
21. round sound car theater system the DOS is the processor for you Input and Output Level Controls To help accurately level match your source units and amplifiers the DOS has individual input and output level controls This will help you maxi mize the sound quality of your system and mini mize any system noise These controls will also help your DOS work with factory installed source units Constant Q Equalization Controls Car interiors vary widely in size and acoustic make up Doors kick panels and rear decks don t make the best location for speaker placement causing your high performance speaker system to sound somewhat lackluster The DOS offers thirty precise one third octave equalization controls per chan nel for a total of 180 filters Parametric Equalization Controls In addition to offering thirty one third octave controls the DOS also packs two fully adjustable parametric equalization controls for each pair of channels With the DOSS parametric controls you can select a center frequency dial in the ideal bandwidth and apply the appropriate amount of boost or cut The precise filtering of the DOS allows you to select bandwidths as narrow as 1 12 octave Non volatile Memories The DOS has the ability to allow the user to set and store up to eight different system equalization settings in individual memory locations 24 bit Digital Signal Processing AudioControl digital signal processors use a special 24 bit DSP
22. rtainly adjust your DOS using your ears however an RTA will give you the best results 2 Begin playing pink noise through your system and place the microphone for your analyzer on a microphone stand in the driver s seat Take careful look at the curve on your analyzer and how one frequency combines with the next There is no one curve that will satisfy every person as we all have different tastes How else can you explain Liberace Brittany Spears or rice cakes The key is to use your DOS to help bal ance your system from one frequency to the next and give your speakers the sparkle sizzle detail or punch that the acoustics of the car have compro mised 3 Start equalizing by removing any large bumps peaks or areas with too much energy at a particu lar frequency Next boost the ranges that do not have enough energy We strongly recommend that you cut or decrease energy before you boost Try to keep any boosts to 6dB or less for best performance 18 Onner s Enjoyment Manual The Strength of Digital 4 Although the plethora of controls on your DOS can be intimidating fear not they were designed to give enough control to maximize your system s performance but not enough to get you in trouble Here is an explanation of the key areas you should focus on Sub bass 100 Hz and below A car without bass is like a day without sunshine unless you live where we do because most of the days in the Pacific Northwest
23. s like your toaster 6 Onner s Enjoyment Manual The Strength of Digital DOS Six channel One Third Octave Programmable Parametric Equalizer 005 Digital Equalizer Bu RudioControltr Digital Status Display 22410 70th Avenue West Mountlake Terrace WA 98043 425 775 8461 Input Maximized Equalization Overload 2 Volts 2 Volts 1 Volt j m Digital 52 S enter ear asi lt Sub 2 Centrol Sv Figure 2 Top view of DQS Onner s Enjoyment Manual AudioControl 10 Digital Dash Control Input This input allows you to connect the optional AudioControl Digital Dash Control DDC which will allow you to control your DOS from the convenience of the drivers seat passengers seat back seat or anywhere else the cable will stretch to See your authorized AudioControl dealer for more information about this option 11 Power Connections This incredibly handy connector is a godsend to those who have tried to wire up their gear with their body crammed in the trunk You can wire up the power ground and remote turn on from the convenience of outside your car and then casually plug it into your DOS INSTALLING THE DOS Up to this point everything you have read has served to educate you on the operations of the DOS We are sure that you are chomping at the bit to install your DOS so we recommend you read the following sections very caref
24. t gains on the amplifier s at minimum 7 Double check that you performed Step 6 8 Decrease the volume control on your source unit and re connect the RCAs between the DOS and the amplifier s 9 Now increase the volume on your source unit to your normal listening level For some of you this may be louder than others 10 At this point you may find yourself going back and adjusting the Output Level controls on your DOS to accommodate for the speaker placement and efficiency 12 Owner s Enjoyment Manual The Strength of Digital DOS Menu Screens One of the major benefits of using Digital tech nology is the ability to use less knobs and buttons and get more control The DOS has six 30 band mono egualizers plus six 2 band parametric egualizers that would normally reguire almost 200 individual controls and occupy an area as large as your trunk AudioControls digital tech nology allows the DOS to offer a plethora of features in one compact chassis In addition there are only a few knobs so navigating through the DOSS functions is guite simple When you first apply power to your DOS it will go through a few wake up screens including some subliminal advertising for AudioControl It will then display a friendly blue screen not the scary blue screen found on many computers Fear not because the blue screen on the DOS is actu ally a good thing Menu Tree Once your DOS has settled on one of these menu screens you
25. ttings in one of the eight memory locations 4 Onner s Enjoyment Manual The Strength of Digital Head Unit O S Amplifier Speakers Amplifier Subwoofer Amplifier Front Figure 1 Basic DOS System Sp eakers Onner s Enjoyment Manual 5 AudioControl A GUIDED TOUR OF DOS 1 Inputs The DOS has six RCA inputs that need to get their audio signals from the main source unit If your source unit only has two or four outputs fear not just use the front or rear inputs See the system diagrams in this manual for some cool system ideas 2 Input Level These knobs allow you to maximize the signal level from your source unit that goes into your DOS to achieve maximum signal to noise ratio Keep in mind that despite what the literature says most aftermarket source units produce a relatively low voltage signal when it comes to playing music at normal levels 3 Input Maximized Indicators These nifty LEDs Light Emitting Diode if you are curi ous indicate that you are supplying the DOS its maximum amount of signal voltage If the LED indicators never come on don t assume that it is not working since LEDs rarely break
26. ully A Placement amp Mounting of your DOS Placement The DOS needs to be installed in the signal path after your source unit but defi nitely before your amplifiers and or any active crossovers The chassis is usually mounted in the rear of the vehicle as close to the amplifiers as possible Mounting Once you have selected a perma nent mounting location position the unit and mark the appropriate mounting holes with a felt tip pin or scratch awl Before doing anything else make sure you are not about to drill a hole in a gas tank or pierce any existing wiring Nothing ruins your day more than an expensive repair bill Drill a few small pilot holes and secure the chassis of the DOS with self tapping screws 8 Onner s Enjoyment Manual The Strength of Digital B DOS Power Wiring C DOS Audio Wiring WARNING Failure to disconnect the negative Planning As you may already have guessed terminal of your battery prior to the installation of there are numerous ways to configure the DOS in your DQS can result in a warm tingly feeling your audio system Spend a little quality time Remote Turn On Connect an 18 to 22 gauge Planning out your system and even sketching it wire from the head unit s remote turn on to the out on paper The following diagrams are justa Remote connector on the DOS few of the system options Positive 12V Connection Insert a 12 to 18 gauge wire into the connector labeled Power on the nifty conne
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