Pioneer GM-D8601 500W Mono Class D Amplifier User Manual

Pioneer GM-D8601 500W Mono Class D Amplifier

Before you start

About This Product

• This product is a mono amplifier for a subwoofer. If both L (left) and R (right) channels are connected to the RCA input of this product, output is mixed because this product is a mono amplifier.

Before connecting/installing the amplifier

• Handling the cord on this product or cords associated with accessories sold with the product may expose you to chemicals listed on
  proposition 65 known to the State of California and other governmental entities to cause cancerand birth defect or other reproductive
  harm. Wash hands after handling.
• This unit is for vehicles with a 12 V battery and negative grounding. Before installing in recreational vehicles, trucks or buses, check the
  battery voltage.
• When installing this unit, make sure to connect the ground wire first. Ensure that the ground wire is properly connected to metal parts of the car’s body. The ground wire of one of this unit must be connected to the car separately with different screws. If the screw
  for the ground wire loosens or falls out, it could result in fire, generation of smoke or malfunction.
• 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 in overheating and smoke, damage to the product
  and injury, including burns.
• Check the connections of the power supply and speakers if the fuse of the separately sold battery wire or the amplifier fuse blows. Determine and resolve the cause, then replace the fuse with and identical equivalent.
• Always install the amplifier on a flat surface. Do not install the amplifier on a surface that is not flat or on a surface with a protrusion.
  Doing so could result in malfunction.
• When installing the amplifier, do not allow parts such as extra screws to get caught between the amplifier and the automobile. Doing so could cause malfunction.
• Do not allow this unit to come into contact with liquids. Electrical shock could result. Also, damage to this unit, smoke, and overheating
  could result from contact with liquids. The surfaces of the amplifier and any attached speakers may also heat up and cause minor
  burns. In the event
• Connect either of three subwoofers to the amplifier 1: a subwoofer with a 300W (GMD8601)/ 500W (GM-D9601) or larger nominal
  input and an impedance 4W, 2: a subwoofer with a 500W (GM-D8601) / 800W (GM-D9601) or larger nominal input and an impedance 2W or 3: a subwoofer with a 800W (GM-D8601) / 1 200W (GM-D9601) or larger nominal input and an impedance 1W. If the nominal input and impedance are out of the above ranges, the subwoofer may catch fire, emit smoke or become damaged

About the protection function

This product has protection function. When this product detects something abnormal, the following 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 situations 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.

Setting the unit

What’s what

GM-D8601

• Front side
• Rear side

1. POWER/PROTECT indicator
   • The power indicator lights up to indicate power ON.
   • If something is not normal, the indicator turns red.
2. GAIN (gain) control
   • If output remains low, even when the car stereo volume is turned up, turn controls to lower level. If distortion occurs when the car stereo volume is turned up, turn these controls to higher level.
   • 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 maximum 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.
   • If you hear too much noise when using the speaker input terminals, turn the gain control to higher level.
3. LPF (low-pass filter) cut off frequency control
   • You can select a cut off frequency from 40 Hz to 240 Hz.
4. 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. For instruction of connecting the bass boost remote control to the amplifier, see the Connection diagram.

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 improper 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

• Above illustration shows NORMAL gain setting.

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.

Signal waveform when outputting at high volume using amplifier gain control

• Signal waveform distorted with high output, if you raise the gain of the amplifier the power changes only slightly.

Connecting the units

Connection diagram

1. Battery wire (sold separately)
   • The maximum length of the wire between the fuse and the positive + terminal of the battery is 30cm (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 amplifier, connect the battery wire terminal of the amplifier to the positive + terminal of the battery.
2. Fuse 100A (GM-D8601) / 150A (GM-D9601) (sold separately) Each amplifier must be separately fused at 100A (GM-D8601) / 150A (GM-D9601).
3. Positive (+) terminal
4. Negative (*) terminal
5. Battery (sold separately)
6. Ground wire, Terminal (sold separately) 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 separately)
8. External output
9. Connecting wire with RCA pin plugs (sold separately)
10. Amplifier with RCA input jacks (sold separately)
11. Bass boost level remote control
12. Bass boost level remote control wire (5m (16 ft. 5 in.))
13. RCA input jack
14. RCA output jack
15. System remote control wire (sold separately) Connect male terminal of this wire to the system 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 terminal via the ignition switch.
16. Speaker output terminals
    • Please see the following section for speaker connection instructions. Refer to Connections when using the speaker input wire.
17. Fuse 40A × 2 (GM-D8601) / 40A × 3 (GMD9601)
18. Front side
19. Rear side

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 wires with an RCA pin cord from a headunit are connected to this amplifier, the amplifier will automatically turn on when the headunit is turned on. When the head unit is turned off, the amplifier turns off automatically. This function may not work with some head units. In such cases, please use a system remote control wire (sold separately). If multiple amplifiers are to be connected together synchronously, 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.

Connecting the speaker output terminals

1. Use wire cutters or a utility knife to strip the end of the speaker wires to expose about 10mm (3/8 in.) of wire and then twist the wire.
2. Connect the speaker wires to the speaker output terminals. Fix the wires securely with the terminal screws
   • Terminal screws
   • Speaker wires
   • Speaker output terminals

Installation

Before installing the amplifier

• 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 become 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 driver, such as on the floor in front of the driver’s seat.
• Install tapping screws in such a way that the screw tip does not touch any wire. This is important to prevent wires from being cut by vibration 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

Attaching the Bass boost remote control

• Attach with tapping screws (3mm × 10mm (1/8 in. × 3/8 in.)) at an easily accessible location such as under the dashboard.

Example of installation on the floor mat or chassis

1. Place the amplifier in the desired installation location.
   • Insert the supplied tapping screws (4mm × 18mm (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 2.5mm (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 (4mm × 18mm ( 5/32 in. × 3/4 in.)).
   • 1. Tapping-screws (4mm × 18mm (5/32 in. × 3/4 in.))
   • 2. Drill a 2.5mm (3/32 in.) diameter hole.
   • 3. Floor mat or chassis
   • 4. Hole-to-hole distance: 257mm (10-1/8 in.) (GM-D8601) / 307mm (12-1/8 in.) (GMD9601)
   • 5. Hole-to-hole distance: 181mm (7-1/8 in.) (GM-D8601) / 181mm (7-1/8 in.) (GMD9601)

Additional information

Specifications

GM-D8601

• Power source: 14.4 V DC (10.8 V to 15.1 V allowable)
• Grounding system: Negative type
• Current consumption: 24 A (at continuous power, 4W)
• Average current drawn: 2.9A (4W for one channel) 4.0A (2W for one channel) 6.0A (1W for one channel)
• Fuse: 40 A × 2
• Dimensions (W × H × D): 265mm × 60mm × 200mm (10-3/8 in. × 2-3/8 in. × 7-7/8 in.)
• Weight: 2.7 kg (6 lbs) (Leads for wiring not included)
• Maximum power output: 600W × 1 (4W) / 1600W× 1 (1W)
• Continuous power output: 300W × 1 (at 14.4 V, 4W, 20 Hz to 240 Hz, ≦ 1% THD) 500W × 1 (at 14.4 V, 2W, 100 Hz, ≦ 1% THD) 800W × 1 (at 14.4 V, 1W, 100 Hz, ≦ 1% THD)
• Load impedance: 4W (1W to 8W allowable)
• Frequency response: 10 Hz to 240 Hz (+0 dB, –3 dB)
• Signal-to-noise ratio: 100 dB (IHF-A network)
• Low pass filter:
  • Cut off frequency ……….. 40 Hz to 240 Hz
  • Cut off slope ………………… –12 dB/oct
• Bass boost:
  • Frequency: 50 Hz
  • Level: 0 dB to 18 dB
• Gain control:
  • RCA: 200 mV to 6.5 V
  • Speaker: 0.8 V to 16 V
• Maximum input level/impedance:
  • RCA: 6.5 V / 25 kW
  • Speaker: 16 V / 12 kW

GM-D9601

• Power source: 14.4 V DC (10.8 V to 15.1 V allowable)
• Grounding system: Negative type
• Current consumption: 39 A (at continuous power, 4W)
• Average current drawn: 3.7A (4W for one channel) 5.2A (2W for one channel) 7.5A (1W for one channel)
• Fuse: 40 A × 3
• Dimensions (W × H × D): 315mm × 60mm × 200mm (12-3/8 in. × 2-3/8 in. × 7-7/8 in.)
• Weight: 3.3 kg (7.3 lbs) (Leads for wiring not included)
• Maximum power output: 1 000W × 1 (4W) / 2 400W × 1 (1W)
• Continuous power output: 500W × 1 (at 14.4 V, 4W, 20 Hz to 240 Hz, ≦ 1% THD) 800W × 1 (at 14.4 V, 2W, 100 Hz, ≦ 1% THD) 1 200W × 1 (at 14.4 V, 1W, 100 Hz, ≦ 1% THD)
• Load impedance: 4W (1W to 8W allowable)
• Frequency response: 10 Hz to 240 Hz (+0 dB, –3 dB)
• Signal-to-noise ratio: 100 dB (IHF-A network)
• Low pass filter:
  • Cut off frequency: 40 Hz to 240 Hz
  • Cut off slope: –12 dB/oct
• Bass boost:
  • Frequency: 50 Hz
  • Level: 0 dB to 18 dB
• Gain control:
  • RCA: 200 mV to 6.5 V
  • Speaker: 0.8 V to 16 V
• Maximum input level/impedance:
  • RCA: 6.5 V / 25 kW
  • Speaker: 16 V / 12 kW

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Pioneer GM-D8601 500W Mono Class D Amplifier-FAQs