Pioneer GM-ME300X1C Owners Manual - Page 2

 While this amplifier is designed to be water-resistant, it should never be submerged under water or subjected to high-pressure water spray.  Install the amplifier in a dry and well-ventilated environment, where other equipment will not interfere with it.  When drilling holes in the chassis for installation, take precautions so as not to contact, damage or obstruct pipes, fuel lines, tanks or electrical wiring. Failure to take such precautions may result in fire.  To ensure proper heat dissipation of the amplifier, ensure the following during installation: - Allow adequate space above the amplifier for proper ventilation. - Do not mount the amplifier in the engine compartment or in any areas of extreme heat. - Do not cover the amplifier.  Ask your dealer or installation professional to install/uninstall this product. Incorrect installation can create dangerous hazards or interfere with boat operation.  Keep small items such as bolts, screws and tools out of the reach of children. Swallowing can cause serious injury. If swallowed, consult a doctor immediately. fire, emit smoke or become damaged. DO NOT use the amplifier with subwoofer configurations with a combined or singular nominal impedance less than 2Ω. About the protection function This product has a protection function. If this product detects something abnormal, the Power/ Protect indicator will turn red and the operation of amplifier will be stopped. Possible causes include: - When the temperature inside the product becomes high - When speaker output detects an abnormality - When the supply voltage is out of specification Important (Serial number) The serial number is located on the bottom of this unit. Be sure to record this number on the enclosed warranty card before installation. CAUTION  Always keep the volume low enough to hear outside sounds.  Extended use of the amplifier while the engine is at rest or idling may exhaust the battery.  The graphical symbol placed on the product means this is an electronic product requiring direct current electrical power.  One or more subwoofers may be connected to this amplifier, but must meet one of the following configurations: - Combined or singular nominal input power handling of 300W or greater if the combined or singular nominal impedance is equal to or greater than 2Ω. WARNING: If the nominal input and impedance are not within the above ranges, the subwoofer(s) may catch En(3/9) Setting the unit What's what Top side 1 23 4 5 Top panel cover  U se the supplied wrench to remove the four screws and detach the top panel cover. Be sure not to lose the removed screws. 1 2  Use a flathead screwdriver to adjust the switch if needed. Right side 1 INPUT SENS switch Select RCA for RCA level input signals or SP for Speaker level input signals. 2 GAIN volume If the output remains low even when the headunit volume is turned up, turn the volume to a lower level (clockwise). If distortion occurs when the headunit volume is turned up, turn these volumes to a higher level (counterclockwise).  For use with an RCA equipped stereo (standard output of 500 mV), set to the NOR (normal) position. For use with an RCA equipped Pioneer headunit with maximum output of 4 V or more, adjust level to match that of the stereo output.  For use with an RCA equipped headunit with output of 4 V, set to the H (High) position.  If you hear too much noise when using the speaker input terminals, turn the gain control to higher level. 3 FREQ (Hz) (cutoff frequency) You can select a cutoff frequency from 25 Hz to 240 Hz. For precise frequency information, refer to Precise Frequency Selection Chart. 4 BASS BOOST switch You can select a bass boost level of 0 dB, 6 dB, or 12 dB. 5 Power/Protect indicator The power indicator lights blue to indicate power ON.  The power indicator lights red to indicate protection mode has been engaged. Setting gain properly  A protective function is included to avoid malfunction of the unit and/or speakers due to excessive output, improper use or improper connection.  When outputting high volume sound etc., this function may cut off the output for a few seconds as a normal function. Output will be restored when the volume of the headunit is turned down.  A cut in sound output may indicate improper setting of the gain volume. To ensure continuous sound output with the headunit at a high volume, set the amplifier gain volume to a level appropriate for the preout maximum output level of the headunit, so that volume can remain unchanged and to avoid distortion caused by signal waveform clipping at the amplifier input.  Even with correct volume and gain settings, the unit sound may cut out periodically. In such cases, please contact an authorized Pioneer Service Company. En(4/9) Gain volume of this unit 0.5 V (Maximum preout level=2 V) Maximum preout level=4V Above illustration shows NOR (normal) gain setting. Relationship between amplifier gain and headunit output power If amplifier gain is raised improperly, this will simply increase distortion, with little increase in power. Signal waveform when outputting at high volume using amplifier gain volume If the signal waveform is distorted due to high output, even if the amplifier gain is raised, the output power will change only slightly. Precise Frequency Selection Chart The numbers in the illustration correspond to the Step Number. No.11 No.7 No.15 No.3 No.1 No.19 No.21 Step Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Frequency (Hz) 25 28 31.5 36 40 45 50 56 63 71.5 80 90 100 113 125 143 160 180 200 225 240 En(5/9) Connecting the units Connection diagram 1 8 9a b c d 2 3 4 ef g 5 6 7 1 To power cable input 2 White:  3 White/black: * 4 Speaker 5 RCA input 6 Connecting wire with RCA pin plugs (sold separately) 7 Headunit with RCA output jacks (sold separately) 8 Black (chassis ground) Connect to a clean, paint-free metal location. 9 Red a Fuse (30 A) b Ground wire, Terminal (sold separately) The ground wires must be the same size as the battery wire. c Battery wire with Fuse [more than 30A] (sold separately) The maximum length of the wire between the fuse and the positive  terminal of the battery is 30 cm (12 in.). d Positive  terminal e Negative (*) terminal f Battery (sold separately) g System remote control wire 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 capacity of the wire is limited. CAUTION  If the system remote control wire of the amplifier is connected to the power terminal via the ignition switch (12 V DC), the amplifier will remain on with the ignition whether the headunit is on or off, which may exhaust battery if the engine is at rest or idling.  Install and route the separately sold marine grade battery wire, marine grade ground wire, speaker wires and the amplifier as far away as possible from the radio antenna, antenna cable, tuner and any communications equipment and wiring. The point of connector attachment/detachment  Push in the connector until a clicking sound is heard, confirming a secure connection.  How to remove the connector: (1) Insert the supplied tool into the lock part of the connector. (2) Gently raise the release locking tab to separate the connector. Note: Attempting to remove the connector by force or pulling from the wire harness can cause damage. To avoid injury, use a work glove to help with gripping the tool. 2 Supplied tool 1 Work glove - Continue to page 7/9 - En(6/9)