Nakamichi EQ-Z1825 User manual

65-C1661-MA CE8545(英文版) 145x205mm 封面四色印刷, 內頁单色印刷
7 BAND AUDIO EQUALIZER
EQ-Z1825
User Manual
nakamichi.caraudio
nakamichicaraudio.com nakamichi.global

YOUR SPEAKER
SPECIFICATIONS
Dear Customer,
Congratulations on purchasing our Nakamichi mobile system product for your sound
system.
This product has been designed and manufactured to Nakamichi’s exacting standards
to ensure many years of audio enjoyment. For the best performance, we recommend
that you have your Nakamichi product installed by an authorized Nakamichi dealer.
If you would like to install this product on your own, we recommend for you to go
through this manual to familiarize yourself with all the installation requirements and
procedures.
If you encounter any issues or if you have any questions on the operation of this prod-
uct, please contact your nearest authorized Nakamichi dealer for assistance, or you
may also contact us through our website or social media channels.
Installation of Your Product
In today’s modern vehicles, it is very easy to cause damage to existing systems through
improper installation. Please follow and scrutinize all wiring diagrams to ensure that you
have connected everything in its proper place.
If you find yourself uncomfortable of unfamiliar with understanding the wiring and
installation diagrams or testing instructions, do contact your nearest Nakamichi dealer
to perform the installation for you.
Gain controls center frequencies
Boost/cut
S/N ratio
Frequency response
Maximum output voltage
T.H.D.
Input sensitivity
Input impedance
Output impedance
Separation
Operating voltage
Fuse Size
Net Weight
Dimensions ( L x H x W)
50Hz, 125Hz, 315Hz, 750Hz, 2.2kHz, 6kHz, 16kHz
+12dB/-12dB
100dB
10Hz-30kHz (-1dB)
7V
0.01%
2.5V
20kOhms
2kOhms
-50dB
11V -15 V D C
1A x 1
Approx. 0.56 kg
182 x107x28mm
1 EN

DIMENSIONS
SPECIFICATIONS
1. Audio Equalizer
2. User Manual
3. Mounting Screw (Ø3 X 7mm)
4. Mounting Screw (Ø4 X 16mm)
5. Gasket
1pc
2pcs
4pcs
4pcs
8pcs
All specifications subject to change without notice.
6. Mounting Brackets
7. High Input Line
8. Line Fuse
9. Wiring Plug
2pcs
1pc
1pc
1pc
2 EN
28mm
182mm
107mm

PANEL CONTROLS AND 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 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.
PRECAUTIONS
Equalizer Gain Controls
Hi Input Auto Power
Aux Gain Control
Low-pass Frequency Switch
Fader Control
Aux In(Auxiliary) Switch
Master Volume
Subwoofer Volume
3 EN

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 dealer about professional installation options.
INSTALLATION AND WIRING
Read these instructions and the following precautions carefully!
● EQ 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.
● 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.
● To prevent short circuits during installation, always disconnect the vehicle’s nega-
tive(-) 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 EQ 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 dealer or
authorized service
center.
4 EN

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 soutce 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 dealer.
● Speakers may be damaged. Consult your authorized 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
INSTALLATION AND WIRING
Source Unit
Remote Turn-on
Bat ter y+ (1)
REM (2)
GND (3)
Auxiliary Source
FUSE
BATTERY
HI level
SPK Input
(Optional)
R
Hi input
Auto
power
L
RLRLRL
RLRL
321
Front Out
Rear Out Aux In
Main In Sub Out
Chassis Ground
Front Amp / Rear Amp SUB Amp
5 EN

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 EQ as the master (main) volume control. The EQ 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
● provides a graphic adjustment band for each of seven frequency ranges: sub,bass,
mid bass, mid, mid high，high and super high frequency. You can adjust the center
of each frequency band to fine 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 control 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.
SETTING THE LOW-PASS FREQUENCY
Set the low pass frequency switch on the top of the EQ to either 60Hz or 90Hz depending
on the subwoofer and subwoofer amplifier 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 EQ 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 EQ 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 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 equallzer/ crossover
unit In the event that trouble arises, never open the case or disassemble the unit. The
intemal 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 man-ufacturer
will void the warranty.
OPERATIONS
6 EN

Made in China | 中國製造