Pioneer GM-D8701, GM-DX871, GM-D9701, GM-DX971 Owner's Manual

PIONEER CORPORATION

28-8, Honkomagome 2-chome, Bunkyo-ku, Tokyo 113-0021, JAPAN

PIONEER ELECTRONICS (USA) INC.

P.O. Box 1540, Long Beach, California 90801-1540, U.S.A. TEL: (800) 421-1404

PIONEER EUROPE NV

Haven 1087, Keetberglaan 1, B-9120 Melsele, Belgium/Belgique TEL: (0) 3/570.05.11

PIONEER ELECTRONICS ASIACENTRE PTE. LTD.

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PIONEER ELECTRONICS AUSTRALIA PTY. LTD.

5 Arco Lane, Heatherton, Victoria, 3202 Australia TEL: (03) 9586-6300

PIONEER ELECTRONICS DE MÉXICO S.A. DE C.V.

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先鋒股份有限公司

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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

<5707000012760V> UC

Before yo u start

Owner’s Manual Mode d’emploi

CLASS D MONO AMPLIFIER AMPLIFICATEUR MONO DE CLASSE D

GM-D8701 GM-DX871 GM-D9701 GM-DX971

English

Français

<5707000012761V> UC

<5707000012762V> UC

Thank you

product

Thank you for purchasing this PIONEER

To ensure proper use, please read through this

product

manual before using this product. It is espe cially important that you read and observe WARNINGs and CAUTIONs in this manual.

To ensure proper use, please read through this

Please keep the manual in a safe and accessible

manual before using this product. It is espe-

place for future reference.

cially important that you read and observe WARNINGs and CAUTIONs in this manual.

Please keep the manual in a safe and accessible place for future reference.

Information to User

Alteration or modifications carried out without appropriate authorization may invalidate the

Information to User

user’s right to operate the equipment.

Alteration or modifications carried out without appropriate authorization may invalidate the

Note

user’s right to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reason able protection against harmful interference

After-sales service for

n a residential installation. This equipment

Pioneer products

generates, uses and can radiate radio fre

Please contact the dealer or distributor from

quency energy and, if not installed and used i

n accordance with the instructions, may

where you purchased this unit for after-sales

cause harmful interference to radio commu

service (including warranty conditions) or any

nications. However, there is no guarantee

other information. In case the necessary infor-

at interference will not occur in a particu-

mation is not available, please contact the

lar installation. If this equipment does cause

companies listed below:

armful interference to radio or television

Please do not ship your unit to the companies

reception, which can be determined by

at the addresses listed below for repair without

turning the equipment off and on, the user is

advance contact.

encouraged to try to correct the interference by one or more of the following measures:

USA&CANADA

Pioneer Electronics (USA) Inc. CUSTOMER SUPPORT DIVISION P.O. Box 1760 Long Beach, CA 90801-1760 800-421-1404

For warranty information please see the Lim- ited Warranty sheet included with this unit.

for purchasing this PIONEER

— Reorient or relocate the receiving

antenna.

— Increase the separation between the

equipment and receiver.

— Connect the equipment into an out-

let on a circuit different from that to w

hich the receiver is connected.

— Consult the dealer or an experienced

radio/TV technician for help.

FEDERAL COMMUNICATIONS COMMISSION SUPPLIER’S DECLARATION OF CONFORMITY

If you experience problems

Product Name: Class D Mono Amplifier

Should this product fail to operate properly,

Model Number: GM-D8701/GM-DX871/

please contact your dealer or nearest author-

GM-D9701/GM-DX971

ized Pioneer Service Station.

Responsible Party Name: PIONEER ELECTRONIC S (USA) INC. SERVICE SUPPORT DIVISION

Visit our website

Address: 2050 W. 190TH STREET, SUITE 100, TORRANCE, CA 90504, U.S.A.

http://www.pioneerelectronics.com

Phone: 1-8 00- 421-1404

in Canada

URL:

https://www.pioneerelectronics.com/PUSA/

http://www.pioneerelectronics.ca

! Learn about product updates (such as firm-

ware updates) for your product.

! Register your product to receive notices

After-sales service for

about product updates and to safeguard

Pioneer products

purchase details in our files in the event of loss or theft.

Please contact the dealer or distributor from where you purchased this unit for after-sales

! Access owner’s manuals, spare parts infor-

service (including warranty conditions) or any

mation, service information, and much

other information. In case the necessary infor

more.

mation is not available, please contact the c

ompanies listed below:

Please do not ship your unit to the companies

The Safety of Your Ears is in

at the addresses listed below for repair without

Your Hands

advance contact.

Get the most out of your equipment by playing

USA & CANADA

it at a safe level—a level that lets the sound

Pioneer Electronics (USA) Inc.

come through clearly without annoying blar-

CUSTOMER SUPPORT DIVISION

ing or distortion and, most importantly, with-

P.O. Box 1760

out affecting your sensitive hearing. Sound

Long Beach, CA 90801-1760

can be deceiving. Over time, your hearing

80 0 - 421-140 4

“comfort level” adapts to higher volumes of sound, so what sounds “normal” can actually

For warranty information, please see the Limited

be loud and harmful to your hearing. Guard

Warranty sheet included with this unit.

against this by setting your equipment at a safe level BEFORE your hearing adapts.

If you experience problems

ESTABLISH A SAFE LEVEL:

Should this product fail to operate properly,

! Set your volume control at a low setting.

please contact your dealer or nearest autho-

! Slowly increase the sound until you can

rized Pioneer Service Station.

hear it comfortably and clearly, without dis- tortion.

Visit our website

! Once you have established a comfortable

http://www.pioneerelectronics.com

sound level, set the dial and leave it there.

in Canada

http://www.pioneerelectronics.ca

 Learn about product updates (such as

firmware updates) for your product.

 Register your product to receive notices

BE SURE TO OBSERVE THE FOLLOWING

about product updates and to safeguard

GUIDELINES:

purchase details in our files in the event of

! Do not turn up the volume so high that you

loss or theft.

can’t hear what’s around you.



Access owner’s manuals, spare parts infor-

! Use caution or temporarily discontinue use

mation, service information, and much

in potentially hazardous situations.

ore.

! Do not use headphones while operating a

motorized vehicle; the use of headphones may create a traffic hazard and is illegal in

The Safety of Your Ears is in

many areas.

Your Hands

Get the most out of your equipment by playing it at a safe level—a level that lets the sound

About This Product

come through clearly without annoying blar

This product is a mono amplifier for subwoofer. If

ing or distortion and, most importantly, with-

both L (left) and R (right) channels are connected

out affecting your sensitive hearing. Sound

to the RCA input of this product, output is mixed

an be deceiving. Over time, your hearing

because this product is a mono amplifier.

“comfort level” adapts to higher volumes of

sound, so what sounds “normal” can actually be loud and harmful to your hearing. Guard

Before connecting/

against this by setting your equipment at a safe level BEFORE your hearing adapts.

installing the amplifier

ESTABLISH A SAFE LEVEL:

WARNING

 Set your volume control at a low setting.

! This product contains chemicals known to the

 Slowly increase the sound until you can

State of California and other governmental en-

hear it comfortably and clearly, without

tities tocause cancer and birth defects or

distortion.

other reproductive harm. Wash hands after

 Once you have established a comfortable

handling.

sound level, set the dial and leave it there.

! Slots and openings in the cabinet are provided

for ventilation to ensure reliable operation of

BE SURE TO OBSERVE THE FOLLOWING

the product, and to protect it from overheat-

GUIDELINES:

ing. To prevent fire hazard, the openings

 Do not turn up the volume so high that you

should never be blocked or covered with items

can’t hear what’s around you.

(such as papers, floor mat, cloths).

 Use caution or temporarily discontinue use

! This unit is for vehicles with a 12 V battery and

in potentially hazardous situations.

negative grounding. Before installing in re-

 Do not use headphones while operating a

creational vehicles, trucks or buses, check the

motorized vehicle; the use of headphones

battery voltage.

may create a traffic hazard and is illegal in

! When installing this unit, make sure to con-

many areas.

nect the ground wire first. Ensure that the ground wire is properly connected to metal parts of the car’s body. The ground wire of the

About This Product

one of this unit must be connected to the car

This product is a mono amplifier for subwoofer. If

separately with different screws. If the screw

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.

for the ground wire loosens or falls out, it

Before connecting/

could result in fire, generation of smoke or

installing the amplier

malfunction.

! Be sure to install the fuse to the battery wire.

WARNING

! Always use a fuse of the rating prescribed.

 This product contains chemicals known to the

The use of an improper fuse could result in

State of California and other governmental

overheating and smoke, damage to the pro-

entities tocause cancer and birth defects or

duct and injury, including burns.

other reproductive harm. Wash hands after

! Check the connections of the power supply

handling.

and speakers if the fuse of the separately sold



Slots and openings in the cabinet are provided

battery wire or the amplifier fuse blows. Deter-

for ventilation to ensure reliable operation

mine and resolve the cause, then replace the

of the product, and to protect it from over-

fuse with and identical equivalent.

heating. To prevent fire hazard, the openings

! Always install the amplifier on a flat surface.

should never be blocked or covered with items

Do not install the amplifier on a surface that

(such as papers, floor mat, cloths).

is not flat or on a surface with a protrusion.

 This unit is for vehicles with a 12 V battery and

Doing so could result in malfunction.

negative grounding. Before installing in rec-

! When installing the amplifier, do not allow

reational vehicles, trucks or buses, check the

parts such as extra screws to get caught be-

batter y voltage.

tween the amplifier and the automobile.

 When installing this unit, make sure to con-

Doing so could cause malfunction.

nect the ground wire first. Ensure that the

! Do not allow this unit to come into contact

ground wire is properly connected to the

with liquids. Electrical shock could result.

metal parts of the car’s body. The ground wire

Also, damage to this unit, smoke, and over-

of the one of this unit must be connected to

heating could result from contact with liquids.

the car separately with different screws. If the

The surfaces of the amplifier and any attached

screw for the ground wire loosens or falls out, it could result in fire, generation of smoke or

speakers may also heat up and cause minor

malfunction.

burns.

 Be sure to install the fuse to the battery wire.

! In the event of any abnormality, the power

 Always use a fuse of the rating prescribed.

supply to the amplifier is cut off to prevent

The use of an improper fuse could result in

equipment malfunction. If this occurs, switch

overheating and smoke, damage to the prod-

the system power off and check the power

uct, and injury, including burns.

supply and speaker connections. If you are un-

 Check the connections of the power supply

able to determine the cause, please contact

and speakers if the fuse of the separately

your dealer.

sold batter y wire or the amplifier fuse blows.

! Always disconnect the negative * terminal of

Determine and resolve the cause, then

the battery beforehand to avoid the risk of

replace the fuse with and identical equivalent.

electric shock or short circuit during installa-

 Always install the amplifier on a flat sur face.

tion.

Do not install the amplifier on a sur face that

! Do not attempt to disassemble or modify this

is not flat or on a surface with a protrusion.

unit. Doing so may result in fire, electric

Doing so could result in malfunction.

shock or other 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.

Before yo u start

Important (Serial number)

The serial number is located on the bottom of this unit. For your own security and convenience, be sure to record this number on the enclosed warranty card.

Before yo u start

What’s what

GM-D8701 and GM-DX871

Front side

21 3 4

Rear side

GM-D9701 and GM-DX971

Front side

21 3 4

when the car stereo volume is turned up, turn these controls to a 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 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.

! 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

Setting the unit

! 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.

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.

Setting the unit

Connection diagram

1 Battery wire (sold separately)

Connect to metal body or chassis.

7 Car stereo with RCA output jacks (sold sepa-

rately)

8 External output 9 Connecting wire with RCA pin plugs (sold se-

parately)

a Amplifier with RCA input jacks (sold sepa-

rately)

b Bass boost level remote control c Bass boost level remote control wire (5 m

(16 ft. 5 in.))

d RCA input jack e RCA output jack 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 Speaker output terminals

Please see the following section for speaker connection instructions. Refer to Connections

Connecting the units

CAUTION

! Always keep the volume low enough to hear

outside 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, video and similar electronic apparatus - Safety re- quirements, IEC 60065.

! The graphical symbol

placed on the

product means direct current.

! Connect either of three subwoofers to the am-

plifier; 1: a subwoofer with a 300 W (GM-D8701 and GM-DX871) / 500 W (GM-D9701 and GM- DX971) or larger nominal input and an impe- dance 4 W, 2: a subwoofer with a 500 W (GM- D8701 and GM-DX871) / 800 W (GM-D9701 and GM-DX971) or larger nominal input and an impedance 2 W or 3: a subwoofer with a 800 W (GM-D8701 and GM-DX871) / 1 200 W (GM-D9701 and GM-DX971) or larger nominal input and an impedance 1 W. If the nominal input and impedance are out of the above ranges, the subwoofer may catch fire, emit smoke or become damaged.

Important (Serial number)

The serial number is located on the bottom of this unit. For your own security and convenience, be sure to record this number on the enclosed warranty card.

Before yo u start

What’s what

GM-D8701 and GM-DX871

Front side

21 3 4

Rear side

GM-D9701 and GM-DX971

Front side

21 3 4

Rear side

To adjust the switch, use a flathead screwdri- ver if needed.

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 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. ! 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.

! 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 Con- nection 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.

Setting the unit

! A cut in sound output may indicate impro-

! 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.

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.

Setting the unit

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 100 A (GM-D8701 and GM-DX871) / 150 A

(GM-D9701 and GM-DX971) (sold separately) Each amplifier must be separately fused at 100 A (GM-D8701 and GM-DX871) / 150 A (GM- D9701 and GM-DX971).

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

Connect to metal body or chassis.

7 Car stereo with RCA output jacks (sold sepa-

rately)

8 External output 9 Connecting wire with RCA pin plugs (sold se-

parately)

a Amplifier with RCA input jacks (sold sepa-

rately)

b Bass boost level remote control c Bass boost level remote control wire (5 m

(16 ft. 5 in.))

d RCA input jack e RCA output jack f System remote control wire (sold separately)

g Speaker output terminals

Please see the following section for speaker connection instructions. Refer to Connections when using the speaker input wire.

h Fuse 40 A × 2 (GM-D8701 and GM-DX871) /

40 A × 3 (GM-D9701 and GM-DX971)

i Front side j Rear side

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

Connecting the units

What’s what

GM-D8701 and GM-DX871

Front side

21 3 4

when the car stereo volume is turned up, turn these controls to a 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 maxi- mum output of 4 V or more, adjust level

Setting the unit

! A cut in sound output may indicate impro-

Signal waveform when outputting at high volume using amplifier gain control

Setting the unit

Connection diagram

Connect to metal body or chassis.

7 Car stereo with RCA output jacks (sold sepa-

rately)

8 External output 9 Connecting wire with RCA pin plugs (sold se-

parately)

a Amplifier with RCA input jacks (sold sepa-

Connecting the units

CAUTION

! Always keep the volume low enough to hear

outside 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, video and similar electronic apparatus - Safety re- quirements, IEC 60065.

! The graphical symbol

placed on the

product means direct current.

! Connect either of three subwoofers to the am-

Important (Serial number)

The serial number is located on the bottom of this unit. For your own security and convenience, be sure to record this number on the enclosed warranty card.

Before yo u start

What’s what

GM-D8701 and GM-DX871

Front side

21 3 4

Rear side

GM-D9701 and GM-DX971

Front side

21 3 4

Rear side

when the car stereo volume is turned up, turn these controls to a 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 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.

! 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

Setting the unit

! A cut in sound output may indicate impro-

! 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

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.

Setting the unit

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.).

Connect to metal body or chassis.

7 Car stereo with RCA output jacks (sold sepa-

rately)

8 External output 9 Connecting wire with RCA pin plugs (sold se-

parately)

a Amplifier with RCA input jacks (sold sepa-

rately)

b Bass boost level remote control c Bass boost level remote control wire (5 m

(16 ft. 5 in.))

d RCA input jack e RCA output jack f System remote control wire (sold separately)

g Speaker output terminals

Please see the following section for speaker connection instructions. Refer to Connections when using the speaker input wire.

h Fuse 40 A × 2 (GM-D8701 and GM-DX871) /

40 A × 3 (GM-D9701 and GM-DX971)

Connecting the units

Setting the unit

Connecting the units

 Do not allow this unit to come into contact with

CAUTION

liquids. Electrical shock could result. Also, dam

! Always keep the volume low enough to hear

age to this unit, smoke, and overheating could

outside sounds.

result from contact with liquids. The surfaces

! Extended use of the car stereo while the en-

of the amplifier and any attached speakers may

gine is at rest or idling may exhaust the bat-

also heat up and cause minor burns.

tery.

 In the event of any abnormality, the power

! This product is evaluated in moderate and tro-

supply to the amplifier is cut off to prevent

pical climate condition under the Audio, video

equipment malfunction. If this occurs, switch

and similar electronic apparatus - Safety re-

the system power off and check the power

quirements, IEC 60065.

supply and speaker connections. If you are

! The graphical symbol

unable to determine the cause, please contact

product means direct current.

yo ur d eal er.

! Connect either of three subwoofers to the am-

 Always disconnect the negative * terminal of

plifier; 1: a subwoofer with a 300 W (GM-D8701

the batter y beforehand to avoid the risk of elec

and GM-DX871) / 500 W (GM-D9701 and GM-

tric shock or short circuit during installation.

DX971) or larger nominal input and an impe-

 Do not attempt to disassemble or modify

dance 4 W, 2: a subwoofer with a 500 W (GM-

this unit. Doing so may result in fire, electric

D8701 and GM-DX871) / 800 W (GM-D9701

shock or other malfunction.

and GM-DX971) or larger nominal input and an impedance 2 W or 3: a subwoofer with a

CAUTION

800 W (GM-D8701 and GM-DX871) / 1 200 W (GM-D9701 and GM-DX971) or larger nominal

! Always keep the volume low enough to hear

input and an impedance 1 W.

outside sounds. If the nominal input and impedance are out of

! Extended use of the car stereo while the en-

the above ranges, the subwoofer may catch

gine is at rest or idling may exhaust the batfire, emit smoke or become damaged.

tery.

! This product is evaluated in moderate and tro-

About the protection function

pical climate condition under the Audio, video

This product has protection function. When this

and similar electronic apparatus - Safety re-

product detects something abnormal, the follow-

quirements, IEC 60065.

ing functions will operate to protect the product

! The graphical symbol and speaker output.

product means direct current.

! The POWER/PROTECT indicator will turn red

! Connect either of three subwoofers to the am-

and the amplifier will shut down in the situa-

plifier; 1: a subwoofer with a 300 W (GM-D8701 tions outlined below.

and GM-DX871) / 500 W (GM-D9701 and GM— If the temperature inside the amplifier gets

DX971) or larger nominal input and an impe-

too high.

dance 4 W, 2: a subwoofer with a 500 W (GM— If a DC voltage is applied to the speaker

D8701 and GM-DX871) / 800 W (GM-D9701

output terminal.

and GM-DX971) or larger nominal input and

! The POWER/PROTECT indicator will turn red

an impedance 2 W or 3: a subwoofer with a and the output will be muted in the situations

800 W (GM-D8701 and GM-DX871) / 1 200 W outlined below.

(GM-D9701 and GM-DX971) or larger nominal — If the speaker output terminal and speaker

input and an impedance 1 W.

wire are short-circuited.

placed on the

If the nominal input and impedance are out of

Important (Serial number)

the above ranges, the subwoofer may catch

The serial number is located on the bottom of

fire, emit smoke or become damaged.

this unit. For your own security and convenience, be sure to record this number on the enclosed

About the protection function

warranty card.

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.

Important (Serial number)

The serial number is located on the bottom of this unit. For your own security and convenience, be sure to record this number on the enclosed warranty card.

What’s what

GM-D8701 and GM-DX871

Front side

21 3 4

Rear side

GM-D9701 and GM-DX971

Front side

21 3 4

Rear side

To adjust the switch, use a flathead screwdriver if needed.

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 the output remains low, even when the car stereo volume is turned up, turn the controls to a lower level. If distortion occurs

when the car stereo volume is turned up, turn these controls to a 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

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-

! 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 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

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-

2 Fuse 100 A (GM-D8701 and GM-DX871) / 150 A

3 Positive + terminal 4 Negative (*) terminal 5 Battery (sold separately) 6 Ground wire, Terminal (sold separately)

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 amplifier, connect the battery wire terminal of the amplifier to the positive + terminal of the battery.

(GM-D9701 and GM-DX971) (sold separately) Each amplifier must be separately fused at 100 A (GM-D8701 and GM-DX871) / 150 A (GMD9701 and GM-DX971).

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 9 Connecting wire with RCA pin plugs (sold se-

parately)

a Amplifier with RCA input jacks (sold sepa-

rately)

b Bass boost level remote control c Bass boost level remote control wire (5 m

(16 ft. 5 in.))

d RCA input jack e RCA output jack f 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.

g Speaker output terminals

Please see the following section for speaker connection instructions. Refer to Connections when using the speaker input wire.

h Fuse 40 A × 2 (GM-D8701 and GM-DX871) /

40 A × 3 (GM-D9701 and GM-DX971)

i Front side j Rear side

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

! Never shorten any wires, the protection circuit

may malfunction.

Connecting the units

Connecting the units Installation

! 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 remain 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 amplifier as far away as possible from the antenna, antenna cable and tuner.

Connecting the speakers

This amplifier can be connected to two speakers in parallel. Connect the speaker leads to suit the mode according to the figure shown below.

Precautions for parallel connection

! When wiring two speakers in parallel, make

sure that the synthetic impedance is from 1 W to 8 W to prevent the amplifier from catching fire, generating smoke and/or being damaged.

! When connected in parallel with the syn-

thetic impedance less than 1 W, as a nor- mal function, this amplifier may automatically be set on mute if outputting high volume sound. Turn down the volume until the mute function is canceled.

When connecting to one speaker

Speaker output

When connecting to two speakers

The output from two speakers is the same as that of one speaker.

Speaker output

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 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.

Solderless terminal connections

! Since the wire will become loose over time,

it must be periodically inspected and tightened 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 tightening of this screw, which may damage the wire.

Connecting the power terminal

WARNING

If the battery wire is not securely fixed to the terminal using the terminal screws, there is a risk of overheating, malfunction and injury, including minor burns.

! Always use the recommended battery and

ground wire, which is sold separately. Connect the battery wire directly to the car battery 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 size

less than 3.6 m (11 ft. 10 in.) 6 AWG

less than 6.4 m (20 ft. 12 in.) 4 AWG

1 Route battery wire from engine compartment to the vehicle interior.

! When drilling a cable pass-hole into the ve-

hicle body and routing a battery wire thorough 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 connections, finally connect the battery wire terminal of the amplifier to the positive + battery terminal.

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 100 A (GM-D8701 and GM-DX871) /

150 A (GM-D9701 and GM-DX971) (sold separately) Each amplifier must be separately fused at 100 A (GM-D8701 and GM-DX871) / 150 A (GM-D9701 and GM-DX971).

2 Use wire cutters or a utility knife to strip the end of the battery wire, ground wire and system remote control wire to expose about 10 mm (3/8 in.) of the end of each of the wires, and then twist the exposed ends of the wires.

Twist

10 mm (3/8 in.)

3 Connect the wires to the terminal.

Fix the wires securely with the terminal screws.

1 Battery wire 2 Power terminal 3 Ground wire 4 GND terminal 5 System remote control wire 6 System remote control terminal 7 Terminal screws

Connecting the speaker output

terminals

1 Use wire cutters or a utility knife to strip the end of the speaker wires to expose about 10 mm (3/8 in.) of wire and then twist the wire.

Twist

10 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 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 dri-

ver, 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.

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 amplifier 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 removed.

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