JVC KS-AR7002, KS-AR7004 TROUBLESHOOTING, CONTROLS, SPECIFICATIONS, Control cover, Power lndicator, No sound is heard, POWER/PROTECTOR lamp, BASS BOOST controller

KS-AR7002	TROUBLESHOOTING
2-speaker system plus subwoofer (1 amplifier)	For more details, consult your JVC car audio dealer.
The minimum impedance should be 4 Ω for each of left and right speakers, and the	The POWER/PROTECTOR lamp does not light.
subwoofer.	• Change the fuses if the current one is blown.
Subwoofer	• Connect the ground lead securely to a metal part of the car.
	• Turn on the equipment connected to this unit.
	• Use a relay if your system employs too many amplifiers.
	• Confi rm the battery voltage (11 V to 16 V).
	The POWER/PROTECTOR lamp lights in red and/or the unit heats up abnormally.
	• Use the speakers of suitable impedance.
	• Correct the speaker wirings if they are short-circuited.
	• Leave the unit turned off for a while to cool it down.
	No sound is heard.
	• Confi rm the connections for power supply (see “POWER SUPPLY” on page 1).
	• Connect RCA pin cords to the INPUT jacks, or the speaker input connector to the HIGH INPUT
	terminal.
	Alternator noise is heard.
	• Keep the power cords away from the RCA pin cords.
	• Keep the RCA pin cords away from other electrical cables in the car.
	• Connect the ground lead securely to a metal part of the car.
*1 Not provided for this unit.	• Make sure the negative speaker leads do not touch the car chassis.
	• Replace the plugs or use plugs with load resistors.
*2 Bridge wiring	• Connect a bypass capacitor across the accessory switches (horn, fan, etc.).
*3 Use a High-pass crossover (not provided).	Noise is made when you connect the unit to an AM tuner.
*4 Use a Low-pass crossover (not provided).	• Move the speaker and power cords away from the antenna lead.

CONTROLS

Hex screw

Hex wrench (3 mm)

Control cover

To operate the following controls, remove the hex screws with a provided hex wrench (3 mm) and detach the control cover. Attach it again after your operation.

KS-AR7004

KS-AR7002

BASS BOOST controller

Turning this boosts the 45 Hz frequency within the range of 0 dB to +18 dB. Adjust the level while listening to the sound. This control is preset to MIN when the unit is shipped.

Input LEVEL controller

The input level can be adjusted with this control when this unit is connected to other source equipment. Adjust the level while listening to the sound. This control is preset to MIN when the unit is shipped.

CROSSOVER filter switch

OFF: Normally, set to this position. The switch is preset to this position when the unit is shipped.

LPF: Set to this position when you want to turn on the LPF (Low-Pass Filter) switch (the Low-Pass Filter transmits frequencies lower than the cutoff frequency).

HPF: Set to this position when you want to turn on the HPF (High-Pass Filter) switch (the High-Pass Filter transmits frequencies higher than the cutoff frequency).

CROSSOVER frequency controller

Turning this adjusts the cutoff frequency within the range of 30 Hz to 500 Hz. Adjust the level while listening to the sound. This control is preset to 30 Hz when the unit is shipped.

POWER/PROTECTOR lamp

The lamp lights in green while the unit is turned on. When the lamp does not light or lights in red with the unit on, it indicates there may be any trouble (see "TROUBLESHOOTING").

Power lndicator

The blue lamp illuminates while the unit is turned on.

SPECIFICATIONS

Power Output	KS-AR7004: 100 W RMS x 4 channels at 4 Ω and ≤ 1% THD + N
	KS-AR7002: 150 W RMS x 2 channels at 4 Ω and ≤ 1% THD + N
Signal-to-Noise Ratio	80 dBA (reference: 1 W into 4 Ω)

Maximum Power Output	800 W
Load Impedance	4 Ω (2 Ω to 8 Ω allowance)
	4 Ω (4 Ω to 8 Ω allowance) (Bridge Mode)
Frequency Response	5 Hz to 50 kHz* (+0, –3 dB)
	* Subsonic filter cuts off extremely low frequency signals less than
	20 Hz.
Input Sensitivity/Impedance	2 V/45 kΩ (0.3 V to 6 V, variable)
Distortion	Less than 0.04% (at 1 kHz)
Power Requirement	DC 14.4 V (11 V to 16 V allowance)
Grounding system	Negative ground
Dimensions (W×H×D)	15-3/4inch × 2-3/8inch × 11-3/8inch (400 mm × 60 mm × 288 mm)
Mass (approx.)	KS-AR7004: 11.7 lbs. (5.3 kg)
	KS-AR7002: 11.5 lbs. (5.2 kg)
Accessories	Speaker input connector
	KS-AR7004: 4P × 2
	KS-AR7002: 4P × 1
	Screw (Dia. 3/16 inch (4 mm) × 13/16 inch (20 mm)) × 4
	Hex wrench
	4 mm × 1
	3 mm × 1
	Spacer × 6
	Bracket
	L × 1
	S × 2
	Screw (M4 × 1/2 inch (12 mm)) × 6
	Washer (M4) × 6
	Spring Lock Washer (M4) × 6

Design and specifications are subject to change without notice.

[European Union only]

EN, FR
© 2007 Victor Company of Japan, Limited	0207MNMMDWTKC

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