Clarion EQS746 Manuel utilisateur
EQS746 1
Owner’s manual
EQS746
7-BAND STEREO
EQUALIZER/CROSSOVER
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Thank you for purchasing this Clarion product.
•Please read this owner’s manual in its entirety before operating this equipment.
•After reading this manual, keep it handy, such as in your glove compartment.
•Save your sales receipt. The warranty at the end of this manual and your sales
receipt are essential for warranty service.
FCC Approval
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
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to consult the dealer or an experienced radio/TV technician for help.
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Contents
1. FEATURES ............................................................................................................. 4
2. PRECAUTIONS ...................................................................................................... 5
Installation ............................................................................................................... 5
3. CONTROLS ............................................................................................................ 6
4. OPERATIONS ......................................................................................................... 7
Setting system volume ............................................................................................ 7
Adjusting the controls ............................................................................................. 8
Setting the low-pass frequency ............................................................................... 8
Connecting an MP3 player or video unit ................................................................. 8
Care and maintenance ........................................................................................... 9
5. INSTALLATION AND WIRING ................................................................................ 9
What is included in the box ..................................................................................... 9
Before starting ........................................................................................................ 9
Tools and additional components ......................................................................... 10
Mounting diagram ................................................................................................. 10
Wiring diagram ...................................................................................................... 11
6. TROUBLESHOOTING .......................................................................................... 12
The unit does not work; no lights .......................................................................... 12
Sound is distorted ................................................................................................. 12
No sound coming from the unit ............................................................................. 12
7. GLOSSARY .......................................................................................................... 13
8. SPECIFICATIONS ................................................................................................ 14
9. LIMITED WARRANTY INFORMATION ................................................................ 15
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1. FEATURES
The Clarion EQS746 is a 7-band stereo equalizer/crossover specifically created for the
mobile environment. The EQS746 provides powerful features in a compact size:
•Seven equalization bands (50Hz, 125Hz, 315Hz, 2.2KHz, 6kHz, and 16 kHz), each
frequency adjustable from -12 to +12dB (-15 to +15dB for subwoofer frequencies)
•Subwoofer output uses a built-in 18dB per octave electronic crossover fixed at 60Hz
or 90Hz.
•Three stereo RCA outputs to drive front, rear, and subwoofer audio amplifiers
•An auxiliary stereo RCA input for use with portable devices, such as an MP3 player
or DVD player
•Separate controls for master volume, subwoofer volume (sub level), front/rear fader,
and selection of main or auxiliary inputs
•Extended frequency response from 20 Hz to 30 kHz with exceptional 100 dB signal-
to-noise performance
•Gold-plated RCA connectors to ensure the best audio signal output
•ISO mounting holes and removable trim ring for custom installation
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2. PRECAUTIONS
•Do not operate this product in ways other than those described in this manual.
•Do not disassemble or modify this unit.
•Do not pour liquid or poke foreign objects into the unit. Water and humidity may
damage internal circuitry.
•If the unit becomes wet, turn off all power and ask your authorized Clarion dealer to
clean or service the unit.
Failure to observe these precautions may damage your car, the monitor, or the video
source, and may void the warranty.
Installation
Installation of mobile audio and video components requires experience with a variety of
mechanical and electrical procedures. Although this manual provides general installa-
tion and operation instructions, it does not show the exact installation methods for your
particular vehicle.
If you do not have the required knowledge and experience to successfully complete the
installation, consult an authorized Clarion dealer about professional installation options.
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3. CONTROLS
Front panel controls
Rear panel connections
Top panel
Subwoofer volume
AUX (auxiliary) switch: Press to
select auxiliary or main inputs
Master volume
Fader control: Use to balance sound
between front and rear speakers
Equalizer gain controls
To adjust gain, rotate control to desired setting
AUX gain control: Gain adjustment for left and right
auxiliary input
Low-pass frequency switch (60/90Hz)
+12V
REM
GND
Front out
L R
L R
Rear out
Main in
L R
L R
Aux in
Sub out
L R
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4. OPERATIONS
Setting system volume
1. Turn the master volume and subwoofer level controls to their minimum settings.
2. Turn the source unit on and increase the volume until you hear distortion.
3. Reduce the volume to just below the distortion point (approximately 80% of full
volume).
This is the maximum usable musical signal for the source unit. Turning the volume
beyond this point increases noise and distortion without increasing the musical
signal.
Note
Once you set the source unit volume, do not change it. Always use the
volume control on the EQS746 as the master (main) volume control. The
EQS746 has better electronics, a higher sound to noise ratio, and is more
linear than the volume settings on any source unit available.
Adjusting the controls
The EQS746 provides a graphic adjustment band for each of seven frequency ranges:
sub, low, mid, mid-high and high frequency. You can adjust the center of each frequency
band to fine tune the acoustical response to your vehicle’s interior.
1. Set all frequencies to the center position. The small dot on the control knob should
be set at 12 o’clock.
2. Play your favorite music track and adjust the individual controls to suit your taste.
Avoid extreme settings, which can distort musical peaks.
3. Increase or decrease the equalizer gain controls to suit your taste.
4. If your system includes a subwoofer, slowly increase the subwoofer level until you
hear a solid bass.
5. If your system includes rear speakers, adjust the fader control to add rear sound.
Set it so most of the music comes from the front and only fills the rear.
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Setting the low-pass frequency
Set the low pass frequency switch on the top of the EQS746 to either 60Hz or 90Hz
depending on the subwoofer and subwoofer amplifier requirements.
Connecting an MP3 player or video unit
1. Plug the MP3 player or video unit into the auxiliary RCA input on the back of the
EQS764 unit.
2. Make sure the auxiliary button on the front of the unit is out, ready to receive input
from the main RCA input (not the auxiliary RCA input).
3. Turn the EQS764 master volume to a normal listening level.
4. Press the play button on the auxiliary source.
5. Push in the AUX button to change to the auxiliary source.
6. Using a small flathead screwdriver, adjust the AUX gain controls located on the top
of the unit so that the volume of the auxiliary source matches the volume of the
main source.
Care and maintenance
Cleaning the cabinet
Use a soft, dry cloth to gently wipe dust and dirt from the unit.
Do not use benzene, thinner, car cleaner, or other cleaners. These substances may
damage the unit or cause the paint to peel.
Servicing the equalizer/crossover unit
In the event that trouble arises, never open the case or disassemble the unit. The
internal parts are not serviceable by the user. Opening any components will void the
warranty.
CAUTION!
Changes or modifications to this product that are not approved
by the manufacturer will void the warranty and will violate FCC
approval.
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5. INSTALLATION AND WIRING
Read these instructions and the following precautions carefully.
What is included in the box
In addition to this manual, the box contains:
•EQS746 7-band graphic equalizer
•2 mounting brackets
•8 Phillips-head screws
Before starting
Mounting precautions
The EQS746 can be mounted next to the source unit or under the dash using the
mounting brackets. The front panel controls should be easily accessible from the
driver’s seat. In addition:
•This unit requires additional mobile audio components for proper operation.
•Always use great care when attaching anything to a vehicle! Check clearances in
front of, behind, and on both sides of the planned installation before drilling any
holes or installing any screws.
Wiring precautions
Disconnect the ground (-) terminal on the vehicle’s battery.
WARNING!
To prevent short circuits during installation, always discon-
nect the vehicle’s negative (-) battery lead before making any
connections.
•This unit is exclusively for vehicles with a negative ground, 12V battery system.
•A good chassis ground connection is critical to minimize resistance and avoid noise
problems. Use the shortest wire possible and securely connect it to the car chassis
and the source unit ground.
•When routing RCA cables, keep the cables away from the power cables and output
speaker wires.
•If you are using a source unit without a remote turn-on lead, the EQS746 can be
turned on with a switched accessory lead. This accessory power source is located
in the factory harness at the back of the radio. This lead turns on and off with the
ignition key.
•Do not open the case. There are no user-serviceable parts inside. If you require
assistance, consult your Clarion dealer or an authorized Clarion service center.
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Tools and additional components
You will need:
•A Phillips-head screwdriver when mounting the unit in the vehicle
•A small flat-head screwdriver to adjust the AUX gain controls if you connect an MP3
player or video source
•High-quality RCA input and output cables
Extra cable can cause signal loss and act as an antenna for noise. Use only high-
quality RCA cables that are no longer than necessary to make a direct connection
with the source unit and amplifiers.
Mounting diagram
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