KRK V88 Car Video System User Manual
Contents
1. TT vs j E ee ex FEATURES OVERVIEW Neutrik Combo Connector accepts XLR 4 phone and TRS connectors System Gain control adjusts overall input sensitivity of the monitor High Frequency Adjustment allows 3 step adjustment of high frequencies Low Frequency Adjustment allows 3 step adjustment of low frequencies IEC Power Entry Module contains the following 3 parts On Off Switch Fuse Block Voltage Selector Systems Controls SYSTEM GAIN 30 dB KS 0 SYSTEM GAIN 6 Input sensitivity is adjusted counterclockwise reduces sensitivity through a rear panel mounted trim control Adjustment range is from 30dB to 6dB Factory preset gain is 6dB which should suffice for most conditions Normally adjustments would only be made if you re using your V 88 in a surround system and you need to balance levels or if your monitor send is too hot and not adjustable If an adjustment is necessary you ll need a small flathead screwdriver and some measuring eguipment E g tone or filtered noise generator and SPL meter USTMENT HF ADJUST 4 1dB HF SHELF High Frequency Adjustment is through a rear panel mounted 3 position toggle switch Range of control is 1dB Flat or 1dB shelving above 1 kHz Factory setting for your V 88 is flat toggle switch is in middle position Room acoustics may dictate which type of adjustment you need to make to retain a flat freguen2. USER GUIDE KRK MODEL V 88 VIDEO SHIELDED BI AMPLIFIED STUDIO MONITOR KR K KRK SYSTEMS LLC 5452 BUSINESS DRIVE HUNTINGTON BEACH CA 92649 TEL 714 373 4600 FAX 714 373 0421 WEB SITE WWW KRKSYS COM S K KRK Systems LLC EMAIL SALES KRKSYS COM Contents Page Introduction Features Overview eee 1 System Controls eeeeeveeeeeeeeeeeeeeeeeeeee2 Connecting Your System esse 3 Installing and Positioning Your Monitors 4 6 Design Goals and System Highlights 9 7 Troubleshooting 8 9 Specifications eee 10 Introduction Congratulations on your KRK purchase And welcome to the growing family of KRK owners Growing demands on music recording industry professionals have created the need for better monitor performance at more affordable prices The V Series class of Powered Studio Monitors was created to address these needs Please take a few moments to review the information in this guide Manufactured by KRK Systems LLC SITES 444 VAIDA x5 E pens x Monet 4 ns Huntington Beach California SURI we U S A u U ADAST dns gt BAR Assa A ous a OE LU LL LT grue LE MN UE Le t x
3. away from the wall Simply adjust the low freguency on each monitor and you ll have the same sound in each room This comes in handy if you re tracking in room A and mixing down in room B Positioning Your Monitors Positioning your monitors correctly in the studio is critical to their performance Typically they should be placed so that that the listening position is fully covered with all monitors resting on the same horizontal plane A great way to test a monitor for its imaging capability is to play back a CD or DVD recorded acoustically in stereo or one recorded in surround sound if you have a surround sound set up We recommend acoustic music because it represents the spectrum of sound You can adjust the angle of each monitor by listening for dead spots Keep in mind changing the angle or position of a monitor will change the sound 2 CHANNEL SET UP Close Field Configuration In a control room situation the monitors are often times placed on the meter bridge or in a close field listening position Initial placement starts by measuring out a simple eguilateral triangle all three sides egual in length with the apex at the center of the listening position as shown in Figure 1 as an overlay for the stereo installation In this configuration the Left and Right monitors are each placed at a 602 angle equidistant from the listening position Listening Position Figure 1 Mid Field Configuration This configuration is b
4. ni ouvrir le boitier Aucun des l ments internes ne peut tre r par par l utilisateur S adresser un technicien de maintenance qualifi Attention Lire les instructions Prendre connaissance de toutes les consignes de s curit et d exploitation avant d utiliser le mat riel Avertissement Alimentations Ne faire fonctionner ce mat riel qu avec la source d alimentation indiqu e sur l appareil Ce mat riel doit tre utilis avec une alimentation principale comportant un fil de terre neutre Le troisi me contact de mise la terre constitue un dispositif de s curit n essayez pas de la contourner ni de la d sactiver R paration maintenance Faire ex culer toutes les interventions de r paration maintenance par un technicien qualifi L utilisateur ne doit pas essayer de proc der luim me ces operations car l ouverture ou le retrait des couvercles risquent de l exposer de hautes tensions et autres dangers 15 Explication des symboles graphigues Le symbole clair avec fl che l int rieur d un triangle quilat ral est utilis pour alerter l utilisateur de la presence l int rieur du coffret de voltage dangereux non isol d ampleur suffisante pour constituer un risque d el trocution Le symbole d exclamation l int rieur d un triangle quilat ral est employ pour alerter les utilisateurs de la pr sence d instuctions importantes pour le fonctionnement et l entretien
5. or the large monitor arrangement in a recording studio where sounds emanating from the monitor or reflecting off ceilings walls and floors greatly affect the sound guality By shortening the path tothe ear the close field monitor offers a tremendous amount of flexibility allowing the sound to become less susceptible to differing room conditions The ability to adjust the high and low freguency characteristics is egually important to help compensate for room irregularities and achieve the highest sound accuracy See HF Adjustments and LF Adjustments sections on page 2 A room that is heavily dampened would typically require a high frequency boost Likewise reducing the high freguencies can alter a reverberant room The low freguency can be adjusted to compensate for the first reflection bounce off the woofer whether it comes from the floor as in the typical stereo setup or from the surface of the mixing board when the monitor is placed atop the meter bridge Placing the monitor close to a rear wall sidewall or a corner will reinforce the low freguencies Generally speaking if you move them two to three feet away from walls and corners you ll hear less low frequency interaction excluding any interaction with the mixing console But when ideal positioning isn t practical low freguency control isthe solution Lets say you have two different studios in your facility in one room the V 88 s are close to the wall in the other they re further
6. service dans le livret d instructions accompagnant l appareil ATTENTION Pour eviter les risques de choc lectrique ne pas enlever le courvercle Aucun entretien de pi ces int rieures par l usager Confier l entretien au personnel qualifi AVIS Pour eviter les risques d incendie ou d electrocution n exposez pas cet article la pluie ou a l humidit 16
7. will contact you with a service guote Service will be performed once your method of payment has been established and approved e Replacement carton and packaging can be purchased from KRK Systems LLC for 26 50 each e For replacement part quotes call 714 373 4600 ext 21 10 Specifications THE V 88 POWERED STUDIO MONITOR Freguency Response High Freguency Driver Low Freguency Driver Cabinet Dimensions Net Weight THE V 88 AMPLIFIER Power Rating Signal to Noise T H D Input Impedance Input Sensitivity Gain Power Consumption THE V 88 CROSSOVER Crossover Freguency Crossover Slope Subsonic Filter FEATURES 39Hz 23kHz 2dB Shielded 1 1 4 33mm Polymer Dome with Elliptical Wave Guide Two 2 shielded 8 203 2mm Woven Kevlar High Sensitivity Voice Coil 55 liter bass reflex 1 25mm and 34 19mm MDF construction 50 50 Black Gray Zolatone Finish 20 W x 13 5 8 x 16 3 4 D 279mm W x 406mm x 425mm D 50 Ibs ea 17 27 kg 60 Watt HF Amplifier gt 90dB lt 05 at full output 1khz 10k Ohms Balanced Input 6dB to 30dB 26dB Fixed 160 VA 160 Watt LF Amplifier 2 3kHz HF 12dB Octave Butterworth LF 12dB Octave Butterworth 12dB Octave 3dB 21Hz Neutrik Combo Connector accepts XLR and 34 phone and TRS connectors IEC Mains Connector System Gain Control 3 Stage Selectable HF Gain Trim 1 0dB Flat 1 0dB 3 Stage Selectable LF Turnover Fre
8. al drift or component variations to provide a more stable image Balanced Power KRK s amplifier construction is proven durable and straightforward Output wattage is balanced to match LF and HF driver sensitivities and power handling Your V 88 monitor uses a toroidal power transformer for lowest possible hum and minimum noise artifacts No Compression Your V 88 contains no signal compression which artificially limits the dynamic range of the program source found in some competing products Although signal compression is often used to make monitors sound louder fuller and to control unwanted characteristics of the raw drivers the result is a compromised mix Your V 88 design is uncomplicated without extras between you and your mix Furniture Grade Construction The cabinetry of your V 88 is constructed from 3 medium density fiberboard with a robust 1 thick front baffle It is internally braced to minimize cabinet resonance All cabinet edges and port openings are heavily radiused to reduce edge diffractions and port flutter Cabinet finish is a neutral fingerprint proof gray Zolatone Custom Made Drivers KRK is renowned for using the highest performance drivers available in our products Your V 88 carries on this tradition A woven Kevlar LF driver was custom designed specifically for this cabinet volume with one goal in mind minimal compromises no surprises Kevlar is one of the strongest lightest most rigid materia
9. asically the same as the Close Field set up see Figure 2 It is normally used with larger monitors or when the monitors are too large or heavy for the meter bridge This set up has the potential for a larger sweet spot and better spatial imaging Make sure that the height of the woofer is above height of the console Listening Position Figure 2 SUBWOOFER SET UP Begin by determining the best location for your subwoofer If possible the optimum set up would look like the set up in Figure 3 This set up may not be practical or possible in your room Once you have set up your monitors Listen to some program material that you know has low frequency information recorded on it Different locations may create a phase misalignment Most Subwoofers have a phase switch on them Flip the phase switch The bass response volume will either increase or decrease in volume Whichever setting gives you the loudest response from your seating position isin phase After you have the proper phase setting you will need to adjust the output level of the Subwoofer to a level that provides a smooth blend of the bass volume with that of your monitors Listening Position Figure 3 5 1 CHANNEL SURROUND SET UP Begin set up by placing the Left and Right front channels 302 degrees from the Center channel and eguidistant to the listening position Figure 4 The Left Surround Rear and Right Surround Rear channels should be placed 1102 deg
10. curately reproducing sound with clarity and accuracy Other monitors in the marketplace tend to modify extend tilt their response above 1 kHz to sound more spatial exciting and impressive What is not mentioned isthis practice tends to make you incorrectly balance your mixes to compensate for this effect leading to poor translation Your V 88 was designed to reproduce the signal with a minimal of freguency enhancement Rather than attempting to defy physics your V 88 delivers unaltered high freguencies and excellent low freguency response with exceptional accuracy from dual 8 woofers in a reasonably small cabinet System Highlights Ability to Translate An often repeated phrase that we hear at about our monitors performance is their ability to translate A mix made on your V 88 s will translate to other environments and other monitors with no surprises They will perform flawlessly for years in the professional and non professional environment alike Flexibility Your V 88 monitor contains an active input circuit specifically designed for balanced or unbalanced input signals The audio input connector accepts XLR and phone or TRS connectors Active Filter Crossovers Each monitor cabinet contains three active filters Subsonic low pass and high pass filter These three filters work together to deliver superior linear frequency response Active filter crossovers generate less heat resulting in no sign
11. cy response from the monitor See additional information in Installing Your Monitors section on page 4 LF ADJ USTMENT LF ADJUST 4 3dB 39 Hz 4 30B 55 Hz 0 4 3dB 47 Hz Low Frequency turnover is set to 39Hz 47Hz or 55Hz by a rear panel mounted 3 position toggle switch Rear panel response curve graphics assist you in selecting the appropriate setting Factory setting for your V 88 is 3dB 39 Hz toggle switch isin up position Room acoustics may dictate which type of adjustment you need to make to retain a flat freguency response from the monitor See additional information in Installing Your Monitors section on page 4 Connecting Your System POWERING ON ON OFF All connections should be made all faders and controls should be set at their minimum levels and all other equipment should be powered on prior to powering on your V 88 monitors The power On Off switch is located on the rear panel and is internationally marked to indicate the operational status ON and OFF A yellow LED illuminates the trademarked KRK Triangle the front baffle when power is applied NOTE MAKE SURE THAT THE VOLTAGE INDICATOR FOUND IN THE MIDDLE PORTION OF THE IEC MAINS CONTROL IS SET TO THE CORRECT VOLTAGE SETTING FOR YOUR VOLTAGE CHANGING VOLTAGE To change the voltage remove the power cord pry off the fuse block with a small flathead screwdriver look for indent on the left inside of the power cord inser
12. he signal cable at the input of the monitor With power on place your ear close to each driver tweeter woofer and listen for noise i e a slight hiss or hum If there s absolutely no sound whatsoever it could be that one or more of the drivers woofer or tweeter or both is at fault It s also possible that the problem lies somewhere in the electronics e Play some non distorted source material at a low volume Carefully cover the tweeter to block the sound without touching the diaphragm Isthe woofer producing a clean sound If there is not a clear tonal guality or any sound at all then the woofer probably needs to be replaced e Cover the woofer so you can hear mostly the tweeter 15 the tweeter producing a clear sound If there is not a clear tonal guality or any sound at all then the tweeter probably needs to be replaced e Once you have a better idea of what may be at fault then call us and speak with someone in the service department They will help you determine the best solution to correct your monitors The service department can be reached at 714 373 4600 ext 21 Problem The monitor hisses hums or makes other loud noises Here are some suggestions that will help you eliminate these undesirables from your system e sure that the power cord is plugged snugly into the IEC socket on the rear of the monitor e Check the connections between the signal source and the monitor The V 88 s Neutrik Combo connector is a co
13. ls that can be used in modern speaker cone construction Troubleshooting Problem If there is no power check to see if e The power cord is plugged into both the IEC socket on the rear panel of the unit and into the AC mains e The AC mains voltage is matched to the operating voltage requirements See Changing Voltage in the Connecting the System section on page 3 If the AC mains voltage is higher than the V 8 s selected voltage it is possible that the fuse needs to be replaced See Changing Fuses in the Connecting the System section on page 3 e The power light is illuminated on the front panel of the V 88 If not turn the power switch OFF and check the A C mains fuse s NEVER USE A LARGER AMPERAGE FUSE THAN IS SPECIFIED Turn the power switch back on The power light should illuminate e fuse change was needed and upon powering the monitor back up the fuse s blow again the monitor needs to be returned to the dealer you purchased it from or to KRK for servicing Problem If you can t hear any sound e Repeat steps the previous troubleshooting section above before continuing to the next steps e Check to see if all other audio devices using the same AC outlet are still operating e sure that audio source cable is plugged into both the source output and the monitor input The System Gain pot is turned up fully clockwise 6 dB e signal source E g mixing console work station CD playe
14. mpletely balanced system If you re connecting an unbalanced output to the monitor be sure that you re using PIN 2 for signal and have PIN 1 and PIN tied together at the source end e Refer to the Connecting the System section on page 4 of this manual to ensure that the AC mains is matched to the operating voltage reguirements e All audio equipment should use the same ground point Check all other devices using the same AC output in the building like dimmers neon signs TV screens and computer monitors These devices should not be using the same circuit For updated Troubleshooting information please visit our Web Site www krksys com Please read the warranty card that was included in the shipping carton of your monitor prior to shipping it back to KRK Systems LLC All products in need of repair can be returned to the dealer where it was purchased or to KRK Systems LLC at the following address KRK SYSTEMS LLC 5452 BUSINESS DRIVE HUNTINGTON BEACH CA 92649 714 373 4600 ATTENTION SERVICE DEPARTMENT e For the safest possible return to please use the shipping carton and packaging that your V 88 was originally shipped in e cannot be responsible for any damages incurred during the shipping process due to poor packing Make sure to insure your shipment e f your monitor is out of warranty and you would like a quotation prior to servicing your product please include a note with your contact information on it and we
15. quency 3dB 39Hz 47Hz or 55Hz LED Power Indicator Power On Off Muting and Delay 11 KRKand 88are regstered trademarksof KRK Stems LLC 12 Safety Instructions English This symbol is intended to alert the user of important operating and maintenance servicing instructions in the literature provided with the eguipment This symbol is intended to alert the user of the presence of un nsulated dangerous voltage within the products enclosure that may present a risk of electric shock RISK OF ELECTRICAL SHOCK DD NOT OPEN ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS QUVRIR Oe Caution To prevent the risk of shock do not remove the cover or open the speaker enclosure There are no user serviceable parts inside Refer servicing to qualified service personnel CAUTION Retain Instructions The Safety instructions should be kept for future reference WARNING Power Sources This equipment should be operated only from power source indicated on the product This equipment is intended to be used with a main power system with a grounded neutral conductor The third grounding pin is a safety feature do not attempt to bypass or disable Servicing Refer all Servicing to qualified personnel Do not attempt to remove covers or disassemble monitor enclosure because opening or removing covers may expose you to dangerous voltage or hazards This monitor is capable of producing very loud sound pressure levels Caution
16. r etc is turned up to a level that can properly send a signal to the monitors e f of the monitors is working Exchange the audio input cable from the non working monitor to the working unit This will determine whether it s really the monitor a faulty cable or some other glitch in the audio chain e the monitor is still not responding it should be returned to the dealer that you purchased it from or to for servicing Problem If the monitor suddenly stops working e Turn the monitor send down or off e Repeat steps in the troubleshooting sections above before continuing to the next steps e Carefully check to see if the amplifier s back plate is hot If the monitor has been running at highest power output for an extended period of time it could be that the unit has become overheated and the protection circuitry has shut the system down momentarily The V 88 provides maximum circuitry protection against AC power surges amplifier overdrive and overheating of the amplifiers Turn the monitor off then wait 30 minutes to allow the back plate to cool down Turn the power switch back on e Increase the volume to check for normal operation e If the monitor is still not responding it should be returned to the dealer that you purchased it from or to for servicing Problem The sound quality changes e Repeat steps in the previous troubleshooting section above before continuing to the next steps e Disconnect t
17. rees from the Center channel Their location should also be eguidistant from the listening position The subwoofer Low Freguency Effects channel is most effective when situated directly below the Center channel as shown in Figure 4 Ifthisis not possible place the subwoofer just to the right or left side and below the Center channel Make sure that the woofers are abovethe height of the console Figure 4 Once the monitors have been placed you need to adjust the SYSTEM GAIN pots see page 2 for each monitor so that all channels have exactly the same SPL output at the listening position Although this can be done simply by listening to each channel one at a time and adjusting for relative levels we recommend using an SPL meter and filtered noise pink noise to test each channel independently Simply take a reading from each monitor and then adjust all the monitors to match your lowest SPL reading Your system levels should now be balanced for multi channel surround The most significant thing to remember is that each room presents its own set of acoustic variables You ll want to experiment a bit to arrive at the best possible sound for your room IMPORTANT NOTE Your V 88 was originally packaged in a specially designed carton and included special packing materials Please save these items They should be used when transporting or shipping your V 88 Design Goals KRK s design goal for your V 88 was to create a monitor capable of ac
18. should be taken to protect your ears with OSHA approved noise suppression devices to avoid permanent hearing loss 13 Explanation of graphical symbols The lightning flash with arrowhead symbol within an eguilateral triangle is intended to alert the userto the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans The exclamation point within an eguilateral triangle is intended to alert the userto the presence of important operating and maintenance servicing instructions inthe literature accompanying the product CAUTION To reducethe risk of electric shock do notremovethe cover No user serviceable parts inside Refer servicing to gualified service person WARNING To prevent fire or electric shock do not expose this equipment to rain or moisture 14 Consignes de Securite Francais Ce symbole sert avertir l utilisateur que la documentation fournie avec le material contient des instructions importantes concernant l exploitation et la maintenance r paration Ce symbole sert avertir l utilisateur de la pr sence dans le bo tier de l appareil de tensions dangereuses non isol es posant des resgues d lectrocution RISK OF ELECTRICAL SHOCK DO NOT OFEN ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS QUVRIR Attention Afin d Eviter tout danger d lectrocution ne pas enlever le couvercle
19. t Slide the circuit board out of the fuse block rotate 1802 and reinstall the fuse block Please note when making fuse changes the fuses will have to be replaced see Changing Fuses section below Make sure and align the white arrow with the raised arrow located on the power entry module before reinstalling Check to see if the correct voltage can be read from left to right in the voltage window before powering up CHANGING FUSES Under normal operation the fuses should not blow A blown fuse usually indicates an overload or fault condition To change the fuse remove the power cord pry off the fuse block with a small flathead screwdriver look for indent on the left inside of the power cord insert and change the blown fuses e 100 120VAC use 4 250V 5mm x 20mm fuses e 220 240VAC use 2 250V 5mm x 20mm fuses If the fuses blow immediately upon power up this indicates a fault condition and the monitor should be returned to KRK for repair NEUTRIK COMBO CONNECTOR SIGNAL INPUT 10K OHMS BALANCED PIN 2 TIP HIGH PIN 3 AING LOW PIN 1 SLEEVE GROUND The Neutrik Combo connector accommodates 4 phone plugs XLR TRS Please note that 2 is hot If you are using an unbalanced connection make sure and wire PIN 1 and PIN 3 together at the source end Installing Your Monitors The close field monitor by definition reduces room interaction This can be compared to the conventional stereo configuration
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