GPX600.2 - Receiver Crunch - Free user manual and instructions

USER MANUAL GPX600.2 Crunch

- This device is only suited for a 12 volt system with negative ground. - Theradiatedheatwhileoperationrequiressufcientaircirculationattheplaceofinstallation.Itis veryimportantthattheheatsinknsdonothavecontactwithanymetalpartsoranysurfaceswhich couldimpairaircirculation.Theampliermaynotbeinstalledinsmallclosedlocationorspaces without air circulation (e.g. spare wheel recess or below the vehicle carpeting). We recommend the installationinthevehicle’strunk.Ensuresufcientprotectionagainstvibrations,dustanddirt. - Ensurethattheinputandoutputcablesaresufcientlyseparatedfromthepowersupplycables. Otherwise interferences may occur. - Ensure the accessibility of the fuse and the operating elements after installation. - Thereliabilityandperformanceoftheamplierdependsonthequalityofinstallation.Preferably consult an expert to install the system, particularly if you want to install several loudspeakers.

POWER SUPPLY AND TURN-ON-CONNECTION

INTERCONNECTION ATTENTION: Before you start with the installation, disconnect the ground connection from the ve- hicle’s battery in order to prevent short circuits. Thepowerwiringwhichisusuallyinstalledinon-boardcarnetworksisnotsufcientforapoweramplier‘s demands.MakesurethatthepowerwirestoGNDandtothe+12Vterminalhasbeensufcientlyspecied.A cable-cross section of at least 10 mm

mustbeusedtoconnectthebatterytotheamplier‘sterminals. FirstconnecttheGNDterminaloftheampliertoanappropriategroundconnectionatthechassis.Toensurea good connection, residue dirt and dust from the connection point. A loose connection may cause malfunctions or interferences noise and distortion. Thenconnectthe+12Vterminaloftheamplierwiththebatterybyusinganappropriatecableincludingan in-line fuse. This fuse should be located very close to the battery; for safety reasons not more than 30 cm away. Only insert the fuse when the installation, including the connection of the loudspeakers, has been ac- complished. Thenconnecttheremoteturn-on-wirefromtheheadunitwiththeamplier‘sREMOTEterminal.Acablewitha cross section of 0.5 mm

is adequate. LOUDSPEAKER CONNECTIONS - In2-channeloperation(i.e.oneloudspeakeroneachamplierchannel),theimpedancemust not be lower than 2 ohms for each speaker - Inbridgingmode(twoamplieroutputscombined)theimpedancemustnotbelowerthan4ohms. - Never connect loudspeaker cables with the ground of the chassis or the +12 V supply voltage. Iftheamplierisoperatedwithatoolowimpedanceorincorrectlyused,theentiresoundsystemmaybedam- aged. This means a warranty void in such cases.10

WheninstallingtheaudiocablesbetweentheRCAoutputsoftheheadunitandtheRCAinputsoftheamplier, the audio and power supply cables should, if possible, not be routed along the same side of the vehicle. We recommend a separated installation, e.g. routing the power cable through the cable channel on the left side and the audio cables through the cable channel of the vehicle on the right side or vice versa. This prevents interferences due to crosstalk into the audio signal.

SIGNAL OUTPUTS TO CONNECT ADDITIONAL AMPLIFIERS

The input signal on the INPUT jacks (Fig. 1,6) will be routed in stereo to the output jacks OUTPUT (Fig. 1,5). ThustheOUTPUTjackallowstheconnectionofaadditionalamplier. INPUT SENSITIVITY OPERATING ELEMENTS TurntheGAIN(Fig.1,9)controlleroftheampliertotheMINposition.Thenturnthevolumecontrollerofthe head unit to 80 - 90% of its full setting. Now turn GAIN clockwise until you hear some distortion. Then turn back the GAIN slightly until you hear a cleaner sound.

VARIABLE HIGH PASS FILTER

Iftheamplieristobeusedformid-range/tweeterloudspeakers,settheswitchesCROSSOVER(Fig.1,3)to HPF. Then set the desired crossover frequency on the HPF controller (Fig.1,2). Thus to that only the frequen- ciesabovethechosencrossoverfrequencywillbeamplied.Thiseffectivelyminimizesdistortionsandover- loads at lower frequencies. A good point to start is at 125 Hz. If you use loudspeakers (>20 cm) set CROSSOVER (Fig.1,3). to ”FULL”. In this case, the HPF controller are without function (Fig.1,2). PROTECTION CIRCUIT ThePOWER/PROTECTIONLED(Fig.1,1)lightsupgreen,iftheamplierisinoperation. ThePOWER/PROTECTIONLED(Fig.1,1)lightsupred,whentheamplierisoverheated,orashortcircuit occurs resp. a too low impedance load is connected to the speaker outputs. If this events, the internal built-in protectioncircuitshuts downtheamplier automatically.Theampliershould workagainproperly afteryou have solved the problems.

VARIABLE LOW PASS FILTER

If the amplier is used to drive a subwoofer, set the switch (Fig. 1,3) to „LPF“. Set the desired crossover frequency by using the controller (Fig. 1,4). Thus to that only the frequencies below the chosen crossover frequencywillbeampliedandthesubwooferplaysmorepreciselyandefcient.

By using the BASS BOOST switch (Fig.1,8) you are able to increase the bass enhancement by 6 or 12 dB. Attention: Use the BASS BOOST wisely! By using the TREBLE BOOST switch (Fig.1,7) you are able to increase the treble enhancement by 6 or 12 dB. Attention: Use the TREBLE BOOST wisely!11 FIGURES (P. 28-30) CONNECTIONS AND CONTROLLERS (FIG. 1) (1) Power-/Protection-LED (2) Highpassltercontroller (3) Selector FULL / LPF (Low pass) / HPF (High pass) (4) Lowpassltercontroller (5) Audiosignaloutputstosupplyadditionalampliers (6) Audio signal inputs (7) Bass Boost selector (8) Treble Boost selector (9) Gain controller POWER SUPPLY AND TURN ON CONNECTION (FIG. 2) (1) GND terminal for the ground (2) REM terminal for the turn on connection (3) +12 V terminal for the positive-connection of the battery (4) Vehicle’s battery (5) In-Line Fuse (not included in the scope of delivery) (6) Turn on wire from the head unit or the electrical antenna (7) Fuse(s) 2-CHANNEL OPERATION STEREO (FIG. 3) Ifyouwanttoruntheamplierwiththe2lineoutputchannelsfromtheheadunittodrive2loudspeakers,in stereo connect the following setup: (1) To the head unit, line output right (2) To the head unit, line output left (3) Loudspeaker left (4) Loudspeaker right 1-CHANNEL OPERATION MONO (FIG. 4) Ifyouwanttoruntheamplierwiththe2lineoutputchannelsfromtheheadunittodriveasubwoofer,connect the following setup: (1) To the head unit, line output rear right or subwoofer output (2) To the head unit, line output rear left or subwoofer output (3) Subwoofer IMPORTANT! Always observe the correct polarity of all connections!12 TROUBLESHOOTING If you are having problems after installation follow the Troubleshooting procedures below. Procedure 1: CheckAmplierforproperconnections. POWER/PROTECTION LED lights up green. In this case skip to Step 3, if not continue.

1. Check in-line fuse on battery positive cable. Replace if necessary.

2. Checkfuse(s)onamplier.Replaceifnecessary.

3. Verify that Ground connection is connected to clean metal on the vehicle’s chassis. Repair/replace if necessary.

4. Verify there is 9 to 16 Volts present at the positive battery and remote turn-on cable. Verify quality connections for both cables at amplier,stereo,andbattery/fuseholder.Repair/replaceifnecessary. Procedure 2: POWER/PROTECTION LED lights up red. 1. If the LED lights up red it is a sign of a possible short in the speaker connections. Check for proper speaker connections and use an ohm meter to check for possible shorts in the speaker wiring. Too low speaker impedance may also cause PROTECTION tolight.Thiscanalsobeasignofdrivingtheamplieratveryhighpowergainswithoutadequateairowaroundtheamplier.Shut offthesystemandallowampliertocool.Checkthatthevehiclechargingsystemismaintainingpropervoltage.Ifthepreviousitems donotsolvetheproblem,afaultmaybeintheamplier.Inthiscaseyoushouldcontactyourdealer. Procedure 3: CheckAmplierforaudiooutput.

1. Route all signal carrying wires (RCA, Speaker cables) away from power and ground wires.

3. Remove existing ground wires for all electrical components. Reground wires to different locations.

Verify that grounding location is clean, shiny metal free of paint, rust etc.

4. Add secondary ground cable from negative battery terminal to the chassis metal or engine block of vehicle.