Nakamichi NKSD800.1 Class-D Mono Block Power Amplifier INTRODUCTION Thank you for your purchase, and welcome to Nokomichi! In…
Nakamichi NHMD600.1 Class-D Mono Block Power Amplifier User Manual
Thank you for your purchase of our Nakamichi product and we warmly welcome you to the Nakamichi family! Do keep your original invoice and purchase receipt in a safe place in case of future service and warranty claims. You may also contact your appointed Nakamichi service agent for any future technical support requirements.
All specifications subject to change without notice.
Notes on the power supply
Connect the +l2V power input lead only after all other leads have been connected. Be sure to connect the ground wire of the unit securely to a meatal part of the car. A lose connection may cause a malfunction of the amplifier.
The unit is turned on by applying +12Volts to this terminal. This terminal does not draw heavy current like the two power terminal so a thinner connecting wire is acceptable. Standard 18 GAUGE is fine and the standard colour is yellow. If the radio is equipped with a power antenna control wire, it can drive this terminal. If the power antenna wire is already in use, you can still splice into it. With this method, the unit will turn on automatically with the radio.
Use the power supply lead with a fuse attached whose value is the same as original fuse. Place the fuse in power supply lead as close as possible to the car battery. During a full power operation, Maxlmum current will run through the system. Therefore. Make sure the that the leads to be connected to the +12V and GND terminals of the unit respectively must be larger than 8-Gauge(AWG.8).
CONNECTION 1: 1-SPEAKER MODE
All cables can create interference. The power cable and cinch / RCA audio cables are very prone to interference from other sources, while remote cables are less prone. Interference is often caused by the generator, ignition, or any other electronic parts or systems. Most of these problems can be eliminated by correct and careful wiring during setup. Here are some guidelines to follow.
If you experience operation or performance problems with this product, compare your installation with the electrical wiring diagram on the previous pages.If problems persist, read the following troubleshooting tips which may help eliminate the problems.
|NO OUTPUT||Low or no remote turn-on input||Check remote turn-on voltage output at amplifier and correct as needed|
|Fuse blown||Check power wire integrity and reversed polarity, repair as needed and replace fuse|
|Power wires not connected||Check power wire and pound connections and repair of replace as needed|
|Audio input not connected or no output from source||Check input connections and signal integrity, repair or replace as needed|
|Speaker wires not connected||Check speaker wires and repair or replace as needed|
|AUDIO CYCLES ON AND OFF||Speaker are blown||Check system with known working speaker and repair or replace speaker as needed|
|Thermal protection engages when amplifier heat sink temperature exceeds 75°C||Make sure there is proper ventilation for amplifier and improve ventilation as needed|
|Loose or poor audio input||Check input connections and repair or replace as needed|
|DISTORTED OUTPUT||Amplifier lecel sensitivity set too high: exceeding maximum output capability of amplifier||Reset gain referring to the turning section of the manual for detailed instructions|
|Impedance load to amplifier too low||Check speaker impedance load. if below 2C stereo or 4U mono rewire speakers to achieve a higher impedance|
|Shorted speaker wires||Check speaker wire connections and repair or replace as needed|
|Speaker not connected to amplifier properly||Check speaker wiring and repair of replace as needed refer to the installation section of this manual for detailed instructions|
|Internal crossover not set properly for speaker||Reset crossovers referring to the multi-cross crossover configuration section of this manual|
|DISTORTED OUTPUT (CONT’Dj||Speaker are blown||Check system with known working speaker and repair or replace as needed|
|POOR BASS RESPONSE||Speaker wired wrong polarity causing cancellation at low frequencies||Check speaker polarity and repair as needed Reset crossovers referring to the multi-cross|
|Crossover set incorrectly||Crossover configuration secrion of this manual for detailed instructions|
|DISTORTED OUTPUT (CONT’D)|| |
Impedance load to amplifier too low
|Check speaker impedance load, if below 2C stereo or 4 ! mono rewire speaker to achieve a higher impedance|
|Short in power wire or incorrect power connections||Check power and ground connections and repair as needed|
|Fuse used is smaller than recommended||Replace with proper fuse size|
|Too much current being drawn||Check speaker impedance load, if below 2U stereo or 4 ‘ mono rewire speaker to achieve a higher impedance|
|Short in power wire of incorrect||Check power and ground connections and repair as needed|
|Nakamichi NHMD600.1 Class-D Mono Block Power Amplifier [pdf] User Manual|
NHMD600.1, Class-D Mono Block Power Amplifier, Block Power Amplifier, Power Amplifier, Amplifier
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