DS18 Nvy-ipx7.4 Marine and Powersport Submersible Amplifier Owner’s Manual
- June 5, 2024
- DS18
Table of Contents
DS18 Nvy-ipx7.4 Marine and Powersport Submersible Amplifier Owner’s Manual
INTRODUCTION
Congratulations on the purchase of the NVY-IPX7.4. It has been designed,
engineered, and manufactured for the highest level of performance and quality.
DS18 presents the best digital class amplifier that will provide the best
performance out of your speaker. They come ready to resist all the elements,
water, dust, and vibrations that the world of motorsports brings.
This amp also features a high level of water resistance, capable of being
submerged without any problems when riding your ride through water.
FEATURES
- 2ch / 4ch Input Selector
- Submergible IPX7 Waterproof Rating
- UV, Salt and Fog protection
- Direct Power harness design with marine grade fuse holder included
- Latest Digital amplifier design with SMC technology
ELEMENTS DESCRIPTION
- INPUT MODE – Mode Selection when switchis on “4CH”, there will be only the output in the channel where has input, when the switchis on” 2CH”, CH3 can take output from CH1, CH 4 can take output from CH2, if there are input in CH1 and CH2, there will be output in all the 4 channels.
- FRONT/REAR SENS – Knob for input gain adjustment in front or rear channel, this ranges from 0.25V to 6V input signal.
- FRONT/REAR FREQ – Knob for Frequency adjustment, x-over ranges from 50Hz to 4KHz in front or rear channel.
- FRONT/REAR X-OVER – X-OVER selector for HPF (high pass)/LPF(low pass)/FULL (full range)’n front or rear channel.
- SPEAKER OUTPUT – Speaker connecting wires.
- INPUT – Low Level Input, this is your RCA audio signal input from the source (head unit).
- POWER INPUT – Power connection wires.
- +12V – Positive Terminal, using a 8Ga wire connect it Directly to the Positive (+) Post of the battery.
- REM – Terminal to Remote cable, which come from the source and controls the amplifier switching on. (Applied voltage must be between 10 and 15.5 VDC).
- GND – Ground terminal, using a 8Ga wire connect it to the chassis. Keep the length of the ground cable to a minimum.
- POWER/PROTECT: When the devices is powered on the LED turn on BLUE When the device enter into protection the LED will turn on RED.
READ BEFORE INSTALLATION
- Be sure to carefully read and understand the instructions before attempting to install these speakers.
- For safety, disconnect the negative battery terminal from the battery prior to beginning the installation.
- For easier assembly, we suggest you run all wires prior to mounting speakers in place, also have all your tools athand: drill, set of Allen keys, crimpers, soldering iron, wire strippers, heat shrink tubing, etc.
- Use high quality connectors for a reliable installation and to minimize signal or power loss.
- Think before you drill! Be careful not to cut or drill into gas tanks, fuel lines, brake or hydraulic lines, vacuum lines or electrical wiring when working on any vehicle. If installation in a boat, take care not to cut or drill through the main hull.
- Never place cables near fuel lines or power (if possible), also never run wires underneath the vehicle, running the wires inside the vehicle or hull area provides the best protection.
- Avoid running wires over or through sharp edges, use rubber or plastic grommets to protect any wires routed through metal, especially the firewall.
AMPLIFIER INSTALLATION
Amplifiers are generally mounted in closed compartments of the vehicle or
watercrafts. Select a location that will provide adequate ventilation for the
amplifier. Avoid mounting the amplifier in exposed areas.
Secure the amplifier with the screws provided.
Before securing the amplifier, inspect the mounting location carefully to
ensure that you do not drill into or damage any electrical, hydraulic, fluid,
or fuel lines.
- Before you start, disconnect the negative cable from the battery, tape up the end so it is isolated from the battery.
- Run an appropriate gauge wire from the battery to the amplifier. Plan this part of the installation carefully. this cable will carry very high current. If it should short to the body and it is not properly fused, it could catch fire.
- Connect the power wire to the battery using a fuse capable of the total current load of all amplifiers connected. Wait until the end locate the fuse as close as possible to the battery
- Find the closest clear metal area to the amp for a ground. sand, grind or scrape all paint and undercoating from the body and screw the ground securely in place. In some vehicles or boats the ground wire must go directly to the battery, use a proper size and color wire to identify as a ground wire and avoid mixing it with the positive wire. It is advisable to test the ground with an ohmmeter between the ground cable and the negative battery cable to ensure a good low resistance connection. Some alloys used in modern vehicles do not offer the best ground. If you believe this is the case – first consult with the vehicle manufacturer.
- Run the speaker wire to the speakers. It is advised that you leave some extra wire at this point. You can fix it later. This amplifier is a multi-channel amplifier design, meaning it has more than one channel of speaker outputs. It is equipped with a harness over-mold. Connect this carefully and neatly; strip your wire back and twist the exposed leads and use an insulated waterproof marine butt connector. If the wires ever contact each other the amplifier will go into protection mode.
- Connect the speaker wires to the amplifier and speakers (make sure the amp is off first). Make sure the polarity (+) and (-) is correct.
- Connect the remote wire and the RCA audio signal from the Head Unit to the amplifier.
- If you haven’t done so already, mount the amplifier now. Only after this step – you should connect back the negative cable at the battery.
- Now is a good time to turn on the amp for the first time. This NVY-IPX 7.4 amplifier has all the necessary controls to adjust your speaker system such as crossover and gain adjustment, it is time to adjust them accordingly so that you have a good result in sound quality
WAR N ING
Professional installation by an authorized DS18 amps dealer is highly
recommended! Otherwise, the performance of your new gear may not be
satisfactory. In the event that you decide to do your own installation, please
read and follow this manual very carefully. Failure to do so may compromise
the integrity of this product, your vehicle, and possibly void the product
warranty.
WIRING
SPEAKER CONNECTION
BRIDGE MODE
SPECIFICATIONS
POWER
Total Watts (Peak) : 1440 Watts
RMS Power @ 4 ohm : 4 x 120 Watts
RMS Power @ 2 ohm : 4 x 200 Watts
RMS Power @ 4 ohm Bridge : 2 x 350 Watts
AUDIO
Frequency Response : 20Hz – 20KHz
Signal to Noise Ratio 1W@4Ω : >90 dB
Efficiency @ 4 ohm: 94%
Input : >20KΩ
Channel Separation : >-70 dB
Total Harmonic Distortion (THD): <0.1 %
Low Level Input Range : 270mV – 5.6V
Selectable X-Over : HPF/FULL/LPF
X-Over Filter Range : 50Hz-4KHz
FEATURES
Amplifier Class : Digital (D)
Amplifier Type : Full Range Digital Marine Amplifier
Number of Channels : 4
Minimum Impedance : 2 OHM / Ch (4 OHM Bridge
LED Indicator : Protection (Red) | Power (Blue)
Power Input Size : 8 Ga
Fuse : 2 x 40A
Thermal Protection : Yes
Over-Load Protection : Yes
Short Circuit Output Protection : Yes
Voltage Input Protection : Yes (9.5-16V)
Body Color | Finish : Black Anodize
2CH | 4CH Input Selector : Yes / Si
Waterproof Rating : IPX7
UV / Salt Fog Protection : Yes
Direct Power Harness Design : Yes
Surface Mount Component Technology : Yes
Marine Grade Fuse Holder : Yes
MEASUREMENT
Overall Length : 10″ / 253mm
Overall Wide : 4.5″ / 116mm
Overall Height : 1.9″ / 48.5mm
Heatsink Length : 8.5″ / 216mm
Gross Single Unit Weight : 1.8Kg
DIMENSIONS
TROUBLESHOOTING
Before removing your amplifier refer to the list below and follow the
suggested procedures.
Always test the speakers and their wires first
AMPLIFIER WON’T POWER UP
- Check for good ground connection.
- Check that remote DC terminal has at least 10V DC.
- Check that there is battery power on the+ terminal.
- Check all FUSES.
- Check that Protection LED is not lit. IF it is lit, shut off amplifier briefly and then re-power it.
HIGH HISS OR ENGINE NOISE (ALTERNATOR WHINE) IN SPEAKERS.
Disconnect all RCA inputs to the amplifier, if hiss noise disappears, then plug in the component driving the amplifier and unplug lts inputs. If hiss noise disappears, go on until the faulty/noisy component is found. It is best to set the amplifier input level as insensitive as possible. “The best subjective S/N ratio is obtainable this way. Try to drive as high a signal level from the head unit as possible.
PROTECTION LED COMES ON WHEN THE AMPLIFIER IS POWERED UP.
Check for shorts on speaker leads. Check that volume control on the head unit
is turned down low. Remove speaker leads, and reset the amplifier f the
Protection LED still comes on, then the amplifier is faulty. The amplifier
will shut down automatically when the units: temperature goes up to 85*C This
will protect the units from damage.
AMPLIFIER GETS VERY HOT,
Check that the minimum speaker impedance for that model is correct. Check for
speaker shorts.
Check that there is good airflow around the amplifier. In some applications,
an external cooling fan may be required.
DISTORTED SOUND
Check that the Level controls is set to match the signal. level of the head
unit. Check that all crossover frequencies have been properly set.
Check for shorts on the speaker leads.
HIGH SQUEAL NOISE FROM SPEAKERS.
This is always caused by a poorly grounded RCA wire.
WARNING:
Cancer and Reproductive Harm.
www.P65Warning.ca.gov
For more Info Please Visit
DS18.com
References
Read User Manual Online (PDF format)
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