NVX XEQ7 User manual
•XEQ7 Equalizer
• 2 Mounting Brackets
• 8 Phillips-head screws
• Instruction Manual
• Warranty Card
What’s in the Box?
Congratulations on purchasing your equalizer. Sound excellence is our most import-
ant objective and your selection of this component tells us you desire to achieve the
same goal.
This manual has been prepared to help you maximize your enjoyment of this unit.
To fully enjoy the exceptional performance this product is capable of, it is recommended
that all signal sources, ampliers, and speakers be of the highest quality possible.
This unit is one of the rst production pre ampliers to incorporate a bandwidth
parametric equalizer with 12dB boost or cut on each of its seven bands. It can
compensate for the seven acoustic anomalies unique to the automotive environ-
ment. This unit easily becomes the “Mission Control Center” of any high-end
automotive system.
Thanks for choosing NVX...
• 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 xed at
60Hz or 90Hz.
• Three stereo RCA outputs to drive front, rear, and subwoofer audio ampliers
• 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
Features
•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 NVX 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 installation 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 NVX dealer about professional installation
options.
Precautions
Controls
Setting system volume
• Turn the master volume and subwoofer level controls to their minimum settings.
• Turn the source unit on and increase the volume until you hear distortion.
• 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 XEQ7 as the master (main) volume control. The XEQ7 has better
electronics, a higher sound to noise ratio, and is more linear than the volume
settings on any source unit available.
Operations
Adjusting the controls
The XEQ7 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 ne tune the acoustical response to your vehicle’s interior.
• Set all frequencies to the center position. The small dot on the control knob
should be set at 12 o’clock.
• Play your favorite music track and adjust the individual controls to suit your taste.
Avoid extreme settings, which can distort musical peaks.
• Increase or decrease the equalizer gain controls to suit your taste.
• If your system includes a subwoofer, slowly increase the subwoofer level until
you hear a solid bass.
• 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 lls the rear.
Setting the low-pass frequency
Set the low pass frequency switch on the top of the XEQ7 to either 60Hz or 90Hz
depending on the subwoofer and subwoofer amplier requirements.
Connecting an MP3 player or video unit
• Plug the MP3 player or video unit into the auxiliary RCA input on the back of the
XEQ7 unit.
• 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).
• Turn the XEQ7 master volume to a normal listening level.
• Press the play button on the auxiliary source.
• Push in the AUX button to change to the auxiliary source.
• Using a small athead 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.
Operations Continued
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 modications to this product that are not approved
by the manufacturer will void the warranty and will violate FCC
approval.
Care and Maintenance
Before starting
Read these instructions and the following precautions carefully.
Mounting precautions
The XEQ7 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.
Installation and Wiring
WARNING!
To prevent short circuits during installation, always disconnect
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 XEQ7 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 NVX dealer or an authorized NVX service center.
You will need:
• A Phillips-head screwdriver when mounting the unit in the vehicle
• A small at-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 highquality RCA cables that are no longer than necessary to
make a direct connection with the source unit and ampliers.
Tools and Additional Components
Mounting Diagram
Wiring Diagram
Head Unit
Remote turn-on
Rear Out
L R
Front Out
L R
Sub Out
L R
Input #2
L R
Input #1
L R
Chassis ground
(bare metal)
Auxiliary Source
Front amp/rear amp (JAD800.4)
Sub amp (JAD1200.1)
Subamp (
JAD120
01
)
EQ (XEQ7)
RCA Cables
(NVX XIX Series)
Battery (XHC600)
Fuse
(XMANL48)
R
I
The unit does not work; no lights
•The power wires may not be connected. Check the power and
ground wiring, then retest.
Sound is distorted
•The source unit volume may be set too high. Reduce the source unit
volume.
•Equalizer gain controls are set too high. Turn the equalizer controls
to the center position and listen for distortion again. If the problem
still occurs, see your authorized NVX dealer.
•Speakers may be damaged. Consult your authorized NVX dealer.
No sound coming from the unit
•The wrong input is selected. Press the AUX switch to turn the main
inputs on.
•No remote-on. Using a voltmeter, check for +12V from the
remote-on source.
Troubleshooting
Crossover: A device that limits the range of frequencies sent to a speaker or
amplier.
Equalization: the process of boosting or cutting sound signal frequencies to im-
prove the quality of the sound. The term comes from the lters used to add back
high frequencies at the receiving end of analog transmissions over wires.
Equalization band: the frequency range impacted by a specic lter.
dB: decibel, a measurement of the relative difference in power or intensity between
two acoustic signals
Gain control: gain is the amount of amplication (voltage, current or power) of an
audio signal expressed in dB
Graphic equalizer: a multi-band variable equalizer that uses mechanical controls
to adjust amplitude.
Glossary
Hz: Abbreviation for Hertz, a unit of frequency equal to one cycle per second.
Octave: the musical principle of dividing sound frequencies into the eight notes of
the musical scale.
OEM: Original Equipment Manufacturer
RCA input/output: port through which sound travels in and out of the system;
“RCA” refers to the type of connector, which was originally manufactured by Radio
Corporation of America.
Slope: how fast the sound changes rated in dBs. The higher the dB number, the
faster the frequency drops off.
Graphic center frequencies: 50Hz, 125Hz, 315Hz, 750Hz, 2.2Hz, 6kHz, 12kHz
Boost/cut: 12dB
S/N ratio: 100dB
Frequency response: 10Hz-50kHz +/-1dB
Maximum output voltage: 7V
THD: 0.005%
Input sensitivity: 50mV - 3V
Head room: 20dB
Input impedance: 20kOhms
Output impedance: 2kOhms
Stereo separation: 82dB/1kHz
Operating voltage: 11V-15V negative ground
Size: 7” wide by 4 1/8” deep by 1” high
Specifications
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