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Specifications

Installation

Power source .............................................................................................................. 14.4 V DC (10.8 — 15.1 V allowable)
Grounding system ............................................................................................................................................ Negative type
Current consumption ........................................................................................................ 15.5 A (at continuous power, 4

)

Average current drawn* ............................................................................................................ 5.6 A (4 

for two channels)

8.8 A (4 

for one channel)

Fuse .................................................................................................................................................................................. 25 A
Dimensions  ........................................................................................................................ 270 (W) 

×

60 (H) 

×

165 (D) mm

[10-5/8 (W) 

×

2-3/8 (H) 

×

6-1/2 (D) in]

Weight  ........................................................................................................ 2.7 kg (5.9 lbs) (Leads for wiring not included)
Maximum power output  .................................................................................................................... 100 W 

×

2 / 300 W 

×

1

Continuous power output  .......................................................... 50 W 

×

2 (at 14.4 V, 4 

, 20 — 20,000 Hz, 0.08% THD)

150 W 

×

1 (at 14.4 V, 4 

, 20 — 20,000 Hz, 0.8% THD)

75 W 

×

2 (at 14.4 V, 2 

, 20 — 20,000 Hz, 0.8% THD)

Load impedance  ............................................................................................................................ 4 

(1 — 8 

allowable)

(Bridge connection: 2 — 8 

allowable)

Frequency response  ............................................................................................................ 10 — 50,000 Hz (+0 dB, –1 dB)
Signal-to-noise ratio  ...................................................................................................................... 105 dB (IHF–A network)
Distortion  ............................................................................................................................................ 0.005% (10 W, 1 kHz)
Separation  ........................................................................................................................................................ 65 dB (1 kHz)
Low pass filter  ................................................................................................................................ Cut off frequency: 80 Hz

Cut off slope: –12 dB/oct

High pass filter ................................................................................................................................ Cut off frequency: 80 Hz

Cut off slope: –12 dB/oct

Bass boost  .................................................................................................................................................. Frequency: 60 Hz

Gain: 0 — 18 dB

Maximum input level/impedance  .................................................................................... RCA: 6.5 V/22 k

Ω (

0.4 — 6.5 V)

Speaker: 26 V/40 k

Ω (

1.6 — 26 V)

Note:
• Specifications and the design are subject to possible modification without notice

due to improvements.

*Average current drawn
• The average current drawn is nearly the maximum current drawn by this unit

when an audio signal is input. Use this value when working out total current
drawn by multiple power amplifiers.

CAUTION

• Do not install in:

—Places where it could injure the driver or pas-

sengers 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.

• Make sure that wires are not caught in the sliding

mechanism of the seats, resulting in a short-cir-
cuit.

• Confirm that no parts are behind the panel when

drilling a hole for installation of the amplifier.
Protect all cables and important equipment such
as fuel lines, brake lines and electrical wiring
from damage.

• Install tapping screws in such a way that the 

screw tip does not touch any wire. This is impor-
tant to prevent wires from being cut by vibration
of the car, which can result in fire.

• To prevent electric shock, do not install the ampli-

fier in places where it might come in contact with
liquids.

• To ensure proper installation, use the supplied

parts in the manner specified. If any parts other
than the supplied ones are used, they may damage
internal parts of the amplifier, or they may
become loose causing the amplifier to shut down.

To prevent malfunction

• To ensure proper heat dissipation of the amplifier,

be sure of the following during installation.

—Allow adequate space above the amplifier for

proper ventilation.

—Do not cover the amplifier with a floor mat or

carpet.

• Do not install the amplifier near a door where it

may get wet.

• Do not install the amplifier on unstable places

such as the spare tire board.

• The best location for installation differs with the

car model and installation location. Secure the
amplifier at a sufficiently rigid location.

• Make temporary connections first and check that

the amplifier and the system operate properly.

• After installing the amplifier, confirm that the

spare tire, jack and tools can be easily removed.

Example of installation on the floor
mat or on the chassis

1. Place the amplifier where it is to be

installed. Insert the supplied tapping
screws (4 

×

18 mm) into the screw

holes. Push on the screws with a
screwdriver so they make marks
where the installation holes are to be
located.

2. Drill 2.5 mm diameter holes at the

point marked, and install the ampli-
fier, either on the carpet or directly
to the chassis.

Drill a 2.5 mm diameter hole

Tapping-screws 
(4 

×

18 mm)

Floor mat 
or chassis

Summary of Contents for GM-X542

Page 1: ... of your musical enjoyment Now it s time to consider how you can maximize the fun and excitement your equipment offers This manufacturer and the Electronic Industries Association s Consumer Electronics Group want you to get the most out of your equipment by playing it at a safe level One that lets the sound come through loud and clear without annoying blaring or distortion and most importantly wit...

Page 2: ...ommet RCA input Special red battery wire RD 223 sold separately After making all other connections at the amplifier connect the battery wire terminal of the amplifier to the positive terminal of the battery Ground wire black RD 223 sold separately Connect to metal body or chassis Amplifier with RCA input jacks Fuse 25 A Car stereo with RCA output jacks External Output Connecting wires with RCA pin...

Page 3: ...odes using inductors and capacitors Three channel mode two way system Three channel mode three way system Inductors L1 and L2 in the diagrams act as low pass filters Capacitors C1 and C2 in the diagrams act as high pass filters Inductors L are used for the woofer subwoofer and capacitors C are used for the high mid high Remember when bridging an amplifier it will see only half of the original spea...

Page 4: ...hen drilling a hole for installation of the amplifier Protect all cables and important equipment such as fuel lines brake lines and electrical wiring from damage Install tapping screws in such a way that the screw tip does not touch any wire This is impor tant to prevent wires from being cut by vibration of the car which can result in fire To prevent electric shock do not install the ampli fier in...

Page 5: ...conseille de consulter un professionnel Avant d utiliser l appareil prenez connaissance de ce mode d emploi et tout spécialement des AVERTISSEMENTS Pour toute question concernant cet appareil veuillez vous adresser au revendeur ou à l installateur AVERTISSEMENT Utilisez le faisceau de câbles de liaison à la batterie un câble rouge et un câble de masse qui est vendu séparément RD 223 Reliez le câbl...

Page 6: ... sous tension reliez la fiche mâle à une borne d alimentation en passant par le contacteur d allumage Voie de sortie Type de haut parleur Puissance Deux voies Haut parleur d extrêmes graves P nominale d entrée 60 W minimum Autre que haut parleur d extrêmes graves P maximale d entrée 100 W minimum Un voie Haut parleur d extrêmes graves P nominale d entrée 165 W minimum Autre que haut parleur d extr...

Page 7: ...e puissance est un amplificateur pontable deux voies une voie mais il est possible de le faire fonctionner comme un appareil trois voies en utilisant des bobines et des condensateurs Mode trois voies trois haut parleurs Mode trois voies cinq haut parleurs Les bobines L1 et L2 sur le schéma jouent le rôle de filtre passe bas les condensateurs C1 et C2 sur le schéma de filtre passe haut Les bobines ...

Page 8: ...reils fonctionnent correctement Choisissez un emplacement qui permette le retrait sans peine de la roue de secours du cric et de la boîte à outils Exemple d installation sur le tapis de sol ou sur le châssis 1 Posez l amplificateur à l emplace ment choisi Introduisez les vis auto taraudeuses fournies 4 18 mm dans les perçages Appuyez ferme ment sur les vis au moyen d un tournevis pour marquer les ...

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