GMDX874 - Receiver PIONEER - Free user manual and instructions

USER MANUAL GMDX874 PIONEER

台北市內湖區瑞光路407號8樓 電話： 886-(0)2-2657-3588 先鋒電子（香港）有限公司 香港九龍長沙灣道909號5樓 電話： 852-2848-6488© 2018 PIONEER CORPORATION.All rights reserved.© 2018 PIONEER CORPORATION.Tous droits de reproduction et detraduction réservés. <5707000013100V> EL Visitez-nous sur le Web à<KYTZ18I>Thank you for purchasing this PIONEERproductTo ensure proper use, please read through thismanual before using this product. It is espe-cially important that you read and observeWARNINGs and CAUTIONs in this manual.Please keep the manual in a safe and accessibleplace for future reference.If you want to dispose this product, do not mixit with general household waste. There is a se-parate collection system for used electronicproducts in accordance with legislation that re-quires proper treatment, recovery and recy-cling.Private households in the member states ofthe EU, in Switzerland and Norway may returntheir used electronic products free of chargeto designated collection facilities or to a retai-ler (if you purchase a similar new one).For countries not mentioned above, pleasecontact your local authorities for the correctmethod of disposal.By doing so you will ensure that your disposedproduct undergoes the necessary treatment,recovery and recycling and thus prevent po-tential negative effects on the environmentand human health. Information to User Alteration or modifications carried out withoutappropriate authorization may invalidate theuser’s right to operate the equipment. Visit our website Visit us at the following site:http://pioneer.jp/en/info/globalnetwork/We offer the latest information aboutPIONEER CORPORATION on our website. The Safety of Your Ears is in Your Hands Get the most out of your equipment by playingit at a safe level—a level that lets the soundcome through clearly without annoying blar-ing or distortion and, most importantly, with-out affecting your sensitive hearing. Soundcan be deceiving. Over time, your hearing“comfort level” adapts to higher volumes ofsound, so what sounds “normal” can actuallybe loud and harmful to your hearing. Guardagainst this by setting your equipment at asafe level BEFORE your hearing adapts.ESTABLISH A SAFE LEVEL:! Set your volume control at a low setting.! Slowly increase the sound until you canhear it comfortably and clearly, without dis-tortion.! Once you have established a comfortablesound level, set the dial and leave it there.BE SURE TO OBSERVE THE FOLLOWINGGUIDELINES:! Do not turn up the volume so high that youcan’t hear what’s around you.! Use caution or temporarily discontinue usein potentially hazardous situations.! Do not use headphones while operating amotorized vehicle; the use of headphonesmay create a traffic hazard and is illegal inmany areas. <5707000013100V>3

Before you start If you experience problems Should this product fail to operate properly,please contact your dealer or nearest author-ized Pioneer Service Station. Before connecting/ installing the amplifier WARNING ! This product contains chemicals known to theState of California and other governmental en-tities tocause cancer and birth defects orother reproductive harm. Wash hands afterhandling.! Slots and openings in the cabinet are providedfor ventilation to ensure reliable operation ofthe product, and to protect it from overheat-ing. To prevent fire hazard, the openingsshould never be blocked or covered with items(such as papers, floor mat, cloths).! This unit is for vehicles with a 12 V battery andnegative grounding. Before installing in re-creational vehicles, trucks or buses, check thebattery voltage.! When installing this unit, make sure to con-nect the ground wire first. Ensure that theground wire is properly connected to metalparts of the car’s body. The ground wire of theone of this unit must be connected to the carseparately with different screws. If the screwfor the ground wire loosens or falls out, itcould result in fire, generation of smoke ormalfunction.! Be sure to install the fuse to the battery wire.! Always use a fuse of the rating prescribed.The use of an improper fuse could result inoverheating and smoke, damage to the pro-duct and injury, including burns.! Check the connections of the power supplyand speakers if the fuse of the separately soldbattery wire or the amplifier fuse blows. Deter-mine and resolve the cause, then replace thefuse with and identical equivalent.! Always install the amplifier on a flat surface.Do not install the amplifier on a surface thatis not flat or on a surface with a protrusion.Doing so could result in malfunction.! When installing the amplifier, do not allowparts such as extra screws to get caught be-tween the amplifier and the automobile.Doing so could cause malfunction.! Do not allow this unit to come into contactwith liquids. Electrical shock could result.Also, damage to this unit, smoke, and over-heating could result from contact with liquids.The surfaces of the amplifier and any attachedspeakers may also heat up and cause minorburns.! In the event of any abnormality, the powersupply to the amplifier is cut off to preventequipment malfunction. If this occurs, switchthe system power off and check the powersupply and speaker connections. If you are un-able to determine the cause, please contactyour dealer.! Always disconnect the negative * terminal ofthe battery beforehand to avoid the risk ofelectric shock or short circuit during installa-tion.! Do not attempt to disassemble or modify thisunit. Doing so may result in fire, electricshock or other malfunction. CAUTION ! Always keep the volume low enough to hearoutside sounds.! Extended use of the car stereo while the en-gine is at rest or idling may exhaust the bat-tery.! This product is evaluated in moderate and tro-pical climate condition under the Audio, videoand similar electronic apparatus - Safety re-quirements, IEC 60065.! The graphical symbolplaced on theproduct means direct current. <5707000013100V>4

GM-DX874 English Français 5About the protection function This product has protection function. When this product detects something abnormal, the follow- ing functions will operate to protect the product and speaker output. ! The POWER/PROTECT indicator will turn red and the amplifier will shut down in the situa- tions outlined below. — If the temperature inside the amplifier gets too high. — If a DC voltage is applied to the speaker output terminal. ! The POWER/PROTECT indicator will turn red and the output will be muted in the situations outlined below. — If the speaker output terminal and speaker wire are short-circuited. What’s what Front side

Rear side To adjust the switch, use a flathead screwdri- ver if needed. 1 BASS BOOST REMOTE (bass boost level remote control) jack By connecting the Bass boost level remote control to the jack on the main unit, you will be able to select a bass boost level from 0 dB to 18 dB. ! Bass boost level setting applies only to CHANNEL B (channel B) output. ! For instruction of connecting the bass boost remote control to the amplifier, see the Connection diagram. 2 FREQ (cut off frequency) control Cut off frequency selectable from 40 Hz to 500 Hz if the LPF/HPF select switch is set to LPF or HPF. 3 GAIN (gain) control Adjusting gain controls CHANNEL A (chan- nel A) and CHANNEL B (channel B) helps align the car stereo output to the Pioneer amplifier. Default setting is the NORMAL position. <5707000013100V>5

Before you start Setting the unit If the output remains low, even when the car stereo volume is turned up, turn the con- trols to a lower level. If distortion occurs when the car stereo volume is turned up, turn these controls to a higher level. ! If using only one input plug, set the gain controls for speaker outputs A and B to the same position. ! For use with an RCA equipped car stereo (standard output of 500 mV), set to the NORMAL position. For use with an RCA equipped Pioneer car stereo, with maxi- mum output of 4 V or more, adjust level to match that of the car stereo output. ! For use with an RCA equipped car stereo with output of 4 V, set to the H position. 4 LPF (low-pass filter)/HPF (high-pass fil- ter) select switch Switch the settings based on the connected speaker. ! When the Subwoofer is connected: Select LPF. This eliminates high range frequency and outputs low range fre- quency. ! When the full range speaker is con- nected: Select HPF or OFF. HPF eliminates low range frequency and output high range frequency. OFF outputs the entire fre- quency range. 5 INPUT SELECT (input select) switch Select 2CH for two-channel input and 4CH for four–channel input. 6 POWER/PROTECT indicator The power indicator lights up to indicate power ON. ! If something is not normal, the indicator turns red. Setting gain properly ! Protective function included to prevent malfunction of the unit and/or speakers due to excessive output, improper use or improper connection. ! When outputting high volume sound etc., this function cuts off the output for a few seconds as a normal function, but output is restored when the volume of the head unit is turned down. ! A cut in sound output may indicate impro- per setting of the gain control. To ensure continuous sound output with the head unit at a high volume, set amplifier gain control to a level appropriate for the preout maximum output level of the head unit, so that volume can remain unchanged and to control excess output. ! Despite correct volume and gain settings, the unit sound still cuts out periodically. In such cases, please contact the nearest authorized Pioneer Service Station. Gain control of this unit Preout level: 2 V (Standard: 500 mV)Preout level: 4 V Above illustration shows NORMAL gain set- ting. Relationship between amplifier gain and head unit output power If amplifier gain is raised improperly, this will simply increase distortion, with little increase in power. <5707000013100V>6

Setting the unit Signal waveform when outputting at high volume using amplifier gain control If the signal waveform is distorted due to high output, even if the amplifier gain is raised, the output power will change only slightly. Connection diagram

1 Battery wire (sold separately) ! The maximum length of the wire be- tween the fuse and the positive + term- inal of the battery is 30 cm (12 in.). ! For the wire size, refer to Connecting the power terminal. The battery wire, the ground wire and the optional direct ground wire must be same size. After making all other connections at the am- plifier, connect the battery wire terminal of the amplifier to the positive + term- inal of the battery. 2 Fuse (80 A) (sold separately) Each amplifier must be separately fused at 80 A. 3 Positive + terminal 4 Negative (*) terminal 5 Battery (sold separately) 6 Ground wire, Terminal (sold separately) <5707000013100V>7

Setting the unit Connecting the units The ground wires must be same size as the battery wire. Connect to metal body or chassis. 7 Car stereo with RCA output jacks (sold sepa- rately) 8 External output If only one input plug is used, do not connect anything to RCA input jack B. 9 Connecting wire with RCA pin plugs (sold se- parately) a RCA input jack A b RCA input jack B c Amplifier with RCA input jacks (sold sepa- rately) d RCA output jack Outputs the signal input to CH A. e Speaker output terminals Please see the following section for speaker connection instructions. Refer to Connections when using the speaker input wire. f System remote control wire (sold separately) Connect male terminal of this wire to the sys- tem remote control terminal of the car stereo. The female terminal can be connected to the auto-antenna relay control terminal. If the car stereo lacks a system remote control terminal, connect the male terminal to the power term- inal via the ignition switch. g Fuse (30 A) × 2 h Front side i Rear side j Bass boost level remote control wire (5 m) k Bass boost level remote control Note INPUT SELECT (input select) switch must be set. For details, see Setting the unit. Before connecting the amplifier WARNING ! Secure the wiring with cable clamps or adhe- sive tape. To protect the wiring, wrap sections in contact with metal parts in adhesive tape. ! Never cut the insulation of the power supply to feed power to other equipment. Current ca- pacity of the wire is limited. CAUTION ! Never shorten any wires, the protection circuit may malfunction. ! Never wire the speaker negative cable directly to ground. ! Never band together multiple speaker’s nega- tive cables. ! If the system remote control wire of the ampli- fier is connected to the power terminal via the ignition switch (12 V DC), the amplifier will re- main on with the ignition whether the car stereo is on or off, which may exhaust battery if the engine is at rest or idling. ! Install and route the separately sold battery wire as far as possible from the speaker wires. Install and route the separately sold battery wire, ground wire, speaker wires and the am- plifier as far away as possible from the anten- na, antenna cable and tuner. About bridged mode <5707000013100V>8

Connecting the units! Do not install or use this amplifier by wiring speakers rated at 2 W (or lower) in parallel to achieve a 1 W (or lower) bridged mode (Dia- gram B). Amplifier damage, smoke, and overheating could result from improper bridging. The am- plifier surface could also become hot to the touch and minor burns could result. To properly install or use a bridged mode and achieve a 2 W load, wire two 4 W speakers in parallel with Left + and Right * (Diagram A) or use a single 2 W speaker. In addition, refer to the speaker instruction manual for information on the correct connec- tion procedure. ! For any further enquiries, contact your local authorized Pioneer dealer or customer service. About suitable specification of speaker Ensure speakers conform to the following standards, otherwise there is a risk of fire, smoke or damage. Speaker impedance is 2 W to 8 W,or4W to 8 W for two-channel and other bridge connections. Subwoofer Speaker channel PowerFour-channel outputNominal input:Min. 100 WTwo-chan nel outputNominal input:Min. 300 WThree-channeloutputSpeaker output Nominal input:Min. 100 WSpeaker output Nominal input:Min. 300 W Other than subwoofer Speaker channel PowerFour-channel outputMax. input:Min. 200 WTwo-chan nel outputMax. input:Min. 600 WThree-channeloutputSpeaker output Max. input:Min. 200 WSpeaker output Max. input:Min. 600 W Connecting the speakers The speaker output mode can be four-channel, three-channel (stereo and mono) or two-chan- nel (stereo or mono). Connect the speaker leads based on the mode and the figures shown below. Four-channel output

Connecting the units Two-channel output (Stereo)

1 Speaker output (Right) 2 Speaker output (Left) Two-channel output (Mono)

1 RCA input jack A 2 RCA input jack B 3 Connecting wires with RCA plugs (sold sepa- rately) 4 From car stereo (RCA output) If only one input plug is used, e.g. when the car stereo has only one output (RCA output), connect the plug to RCA input jack A rather than B. 5 INPUT SELECT (input select) switch (4CH po- sition) Two-channel output (Stereo) / (Mono) ! Slide INPUT SELECT (input select) switch to 2CH position. <5707000013100V>10

Connecting the units

1 RCA input jack A For two-channel output, connect the RCA plugs to the RCA input jack A. 2 Connecting wire with RCA pin plugs (sold se- parately) 3 From car stereo (RCA output) 4 INPUT SELECT (input select) switch (2CH position) Connections when using the speaker input wire Connect the car stereo speaker output wires to the amplifier using the supplied speaker input wire with RCA pin cord. 1 Car Stereo 2 Speaker output 3 Red: Right + 4 Black: Right * 5 Black: Left * 6 White: Left + 7 Speaker input wire with RCA pin cord To the RCA input jack of this unit Notes ! If speaker input wires from a headunit are connected to this amplifier, the amplifier will automatically turn on when the headunit is turned on. When the headunit is turned off, the amplifier turns off automatically. This function may not work with some headunits. In such cases, please use a system remote control wire (sold separately). If multiple am- plifiers are to be connected together synchro- nously, connect the head unit and all amplifiers via the system remote control wire. ! Connect the system remote control wire when you wish to only turn on the car stereo, not the amplifier. ! This amplifier automatically selects an input signal mode between the RCA level and the speaker level by detecting an input signal. Solderless terminal connections ! Since the wire will become loose over time, it must be periodically inspected and tigh- tened as necessary. ! Do not solder or bind the ends of the twisted wires. ! Fasten while making sure to not to clamp the insulating sheath of the wire. ! Use the supplied hexagonal wrench to tighten and loosen the terminal screw of the amplifier and use it to securely fasten the wire. Be careful to avoid excessive tigh- tening of this screw, which may damage the wire. Connecting the power terminal WARNING If the battery wire is not securely fixed to the term- inal using the terminal screws, there is a risk of overheating, malfunction and injury, including minor burns. <5707000013100V>11

Connecting the units ! Always use the recommended battery and ground wire, which is sold separately. Con- nect the battery wire directly to the car bat- tery positive (+) terminal and the ground wire to the car body. ! Recommended wires size (AWG: American Wire Gauge) is as follows. The battery wire, the ground wire and the optional direct ground wire must be same size. ! Use a wire of 8 AWG to 16 AWG wire for the speaker wire. Battery wire and ground wire size Wire length Wire sizeless than 4.5 m (14 ft. 9 in.) 8 AWGless than 7.2 m (23 ft. 7 in.) 6 AWGless than 11.4 m (37 ft. 5 in.) 4 AWG 1 Route battery wire from engine com- partment to the vehicle interior. ! When drilling a cable pass-hole into the ve- hicle body and routing a battery wire thor- ough it, take care not to short-circuit the wire damaging it by the cut edges or burrs of the hole. After completing all other amplifier connec- tions, finally connect the battery wire terminal of the amplifier to the positive + battery term- inal.

1 Positive + terminal 2 Battery wire (sold separately) The maximum length of the wire between the fuse and the positive + terminal of the battery is 30 cm (12 in.). 3 Fuse (80 A) (sold separately) Each amplifier must be separately fused at 80 A. 2 Use wire cutters or a utility knife to strip the end of the battery wire, ground wire and system remote control wire to ex- pose about 10 mm (3/8 in.) of the end of each of the wires, and then twist the ex- posed ends of the wires. Twist10 mm (3/8 in.) 3 Connect the wires to the terminal. Fix the wires securely with the terminal screws.

Connecting the unitsConnecting the speaker output terminals 1 Use wire cutters or a utility knife to strip the end of the speaker wires to ex- pose about 10 mm (3/8 in.) of wire and then twist the wire. Twist10 mm (3/8 in.) 2 Connect the speaker wires to the speaker output terminals. Fix the wires securely with the terminal screws.

1 Terminal screws 2 Speaker wires 3 Speaker output terminals Before installing the amplifier WARNING ! To ensure proper installation, use the supplied parts in the manner specified. If any parts other than those supplied are used, they may damage internal parts of the amplifier, or be- come loose causing the amplifier to shut down. ! Do not install in: — Places where it could injure the driver or passengers if the vehicle stops suddenly. — Places where it may interfere with the dri- ver, such as on the floor in front of the dri- ver’s seat. ! Install tapping screws in such a way that the screw tip does not touch any wire. This is im- portant to prevent wires from being cut by vi- bration of the car, which can result in fire. ! Make sure that wires do not get caught in the sliding mechanism of the seats or touch the legs of a person in the vehicle as short-circuit may result. ! When drilling to install the amplifier, always confirm no parts are behind the panel and protect all cables and important equipment (e.g. fuel/brake lines, wiring) from damage. CAUTION ! To ensure proper heat dissipation of the ampli- fier, ensure the following during installation: — Allow adequate space above the amplifier for proper ventilation. — Do not cover the amplifier with a floor mat or carpet. ! Place all cables away from hot places, such as near the heater outlet. ! The optimal installation location differs de- pending on the car model. Secure the ampli- fier at a sufficiently rigid location. ! Check all connections and systems before final installation. ! After installing the amplifier, confirm that the spare tire, jack and tools can be easily re- moved. <5707000013100V>13

Connecting the units Installation Attaching the Bass boost remote control Attach with tapping screws (3 mm × 10 mm (1/8 in. × 3/8 in.)) at an easily accessible loca- tion such as under the dashboard. Tapping screws (3 mm × 10 mm (1/8 in. × 3/8 in.)) Example of installation on the floor mat or chassis 1 Place the amplifier in the desired instal- lation location. Insert the supplied tapping screws (4 mm × 18 mm (5/32 in. × 3/4 in.)) into the screw holes and push on the screws with a screwdriver so they make an imprint where the installation holes are to be located. 2 Drill 2.5 mm (3/32 in.) diameter holes at the imprints either on the carpet or directly on the chassis. 3 Install the amplifier with the use of supplied tapping screws (4 mm × 18 mm (5/32 in. × 3/4 in.)).

1 Tapping-screws (4 mm × 18 mm (5/32 in. × 3/4 in.)) 2 Drill a 2.5 mm (3/32 in.) diameter hole. 3 Floor mat or chassis 4 Hole-to-hole distance: 229.5 mm (9-1/32 in.) 5 Hole-to-hole distance: 191.5 mm (7-17/32 in.) <5707000013100V>14

Installation Specifications Power source ............................. 14.4 V DC (10.8 V to 15.1 Vallowable)Grounding system ................... Negative typeCurrent consumption ............ 29 A (at continuous power,4 W)Average current consumption ..................................................... 3.1 A (4 W for four channels) 4.4 A (4 W for two channels,BRIDGE)4.4 A (2 W for four channels)Fuse ................................................ 30 A × 2Dimensions (W × H × D) ...252mm × 60 mm ×215 mm(9-7/8 in. × 2-3/8 in. ×8-1/2 in.)Weight .......................................... 2.5 kg (5.5 lbs)(Leads for wiring not in-cluded) Maximum power output ....... 200 W × 4 (4 W)/600W×2 (4 W) BRIDGE / TOTAL1 200 W (300 W × 4) Continuous powe r output ... 100 W × 4 (at 14.4 V, 4 W, 20 Hz to 20 kHz, ≦ 1 % THD)150 W × 4 (at 14.4 V, 2 W,1 kHz, ≦ 1 % THD)125 W × 4 (at 14.4 V, 1 W,1 kHz, ≦ 1 % THD)300 W × 2 (at 14.4 V, 4 WBRIDGE, 1 kHz, ≦ 1 % THD)250 W × 2 (at 14.4 V, 2 WBRIDGE, 1 kHz, ≦ 1 % THD) Load impedance ...................... 4 W (1 W to 8 W allowable) Frequency response ............... 10 Hz to 50 kHz (+0 dB,–3 dB)Signal-to-noise ratio ............... 95 dB (IEC-A network)Distortion ..................................... 0.05 % (10 W, 1 kHz)Low pass filter:Cut off frequency ........... 40 Hz to 500 HzCut off slope ..................... –12 dB/octHigh pass filter:Cut off frequency ........... 40 Hz to 500 HzCut off slope ..................... –12 dB/octBass boost:Frequency .......................... 50 HzLevel ..................................... 0 dB to 18 dBGain control:RCA ...................................... 200 mV to 6.5 VSpeaker .............................. 0.8 V to 16 VMaximum input level / impedance:RCA ...................................... 6.5 V / 25 kWSpeaker .............................. 16 V / 12 kW CEA2006 Specifications Power output ............................. 100 W RMS × 4 Channels(at 14.4 V, 4 W and ≦ 1%THD+N)300 W RMS × 2 Channels(at 14.4 V, 4 W BRIDGE 1 kHzand ≦ 1 % THD+N)150 W RMS × 4 Channels(at 14.4 V, 2 W 1 kHz and ≦1 % THD+N)S/N ratio ....................................... 75 dBA (reference: 1 W into4 W)In order to listen to music with Hi-Res sound quality. allcomponents complied with High-Resolution Audio Stan-dard of Japan Audio Society are recommended to use.The product with this logo is conformed to High-Resolu-tion Audio standard defined by Japan Audio Society.This logo is used under license from Japan Audio So-ciety. Notes ! Specifications and the design are subject to modifications without notice. ! The average current consumption is nearly the maximum current consumption by this unit when an audio signal is input. Use this value when working out total current con- sumption by multiple power amplifiers. <5707000013100V>15