Nakamichi NKSD800.1 Class-D Mono Block Power Amplifier
INTRODUCTION
Thank you for your purchase, and welcome to Nokomichi! In order to enjoy better service from us, please keep your original invoice well and complete. You’d better post the copy of bock to the appointed service agent of Nokomichi so that you may get more technical support.
ACCESSORY LIST
- User Manual: LPC
- Amplifier: LPC
- Mounting Screw (CD4 x 2mm): 4pcs
- Fuse(40A): 3pcs
SPECIFICATIONS
| SPECIFICATIONS | |
| N-power Output@ 4 Ohm | 400W X 1 |
| N-power Output@ 2 Ohm | 600W x 1 |
| N-power Output@ 1 Ohm | 800W x 1 |
| MAX Power | 3200W |
| T.H.D. | <0.1% |
| Frequency Response | 20HZ – 20kHZ |
| Signal To Noise Ratio | >90dB |
| Sensitivity | 0.15V – 8V |
| Fuse Size | 40A x3 |
| Unit Dimensions ( L x H x W) | 322 x 222 x 54 mm |
| Net Weight | Approx. 2.7 kg |
| Box Dimensions ( L x H x W) | 365 x 260 x 88 mm |
| Gross Weight | Approx.3 kg |
DIMENSIONS (UNIT: MM)
POWER CONNECTION LEADS
Notes on the power supply
Connect the + 12V power input lead only after all other leads have been connected. Be sure to connect the ground wire of the unit securely to a metal part of the car. A loose connection may cause a malfunction of the amplifier.
REMOTE: The unit is turned on by applying + l 2Volts to this terminal. This terminal does not draw heavy current like the two power terminals so a thinner connecting wire is acceptable. Standard 18 GAUGE is fine and the standard color 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 it. With this method, the unit will turn on automatically with. Nakamichi the radio. Use the power supply lead with a fuse attached whose value is the same as the original fuse. Place the fuse in the power supply lead as close as possible to the car battery. During a full-power operation, Maximum current will run through the system. Therefore. Make sure that the leads to be connected to the + 12V and GND terminals of the unit respectively must be larger than 8-Gauge (AWG.8).
Power Connection Leads Power Connection Leads
System 2: 1 channel mode
TROUBLESHOOTING
| Symptom | Possible Cause | Action To Take |
| no output | low or no remote turn-on input | check remote turn-on voltage output at the amplifier and correct as needed |
| fuse blown | check power wire integrity and reversed polarity, repair as needed, and replace the fuse | |
| power wires not connected | check power wire and ground connections and repair of replacing 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 | speakers are blown | check system with known working speaker and repair or replace speakers as needed |
| thermal protection engages when amplifier heat sink temperature exceeds 90°C | make sure there is proper ventilation for the amplifier and improve ventilation as needed | |
| loose or poor audio input | check input connections and repair or replace as needed | |
| distorted output | amplifier level sensitivity set too high; exceeding maximum output capability of the amplifier | reset again referring to the tuning section of the manual for detailed instructions |
| impedance load to amplifier too low | check speaker impedance load if below 2ohm stereo or 4ohm mono rewire speakers to achieve a higher impedance | |
| ishorted speaker wires | check speaker wire connections and repair or replace as needed | |
| speaker not connected to amplifier properly | check speaker wiring and repair of replacing as needed refer to the installation section of this manual for detailed instructions |
| Symptom | Possible Cause | Action To Take |
| distorted output | internal crossover not set properly for speaker | reset crossovers referring to the multi-cross crossover configuration section of this manual |
| distorted output (cont’d) | speakers are blown | check system with known working speakers and repair or replace as needed |
| poor bass response | speakers wired wrong polarity causing cancellation at low frequencies | check speaker polarity and repair as needed |
| crossover set incorrectly | reset crossovers referring to the multi-cross crossover configuration section of this manual for detailed instructions | |
| distorted output (cont’d) | impedance load to amplifier too low | check speaker impedance load, if below 2ohn stereo or 4ohm mono rewire speakers 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 2ohm stereo or 4ohm mono rewire speakers to achieve a higher impedance | |
| short in power wire of incorrect | check power and ground connections and repair as needed |
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In nakamichi.global ii nakamichi.caraudio
Made in China
Documents / Resources
 | Nakamichi NKSD800.1 Class-D Mono Block Power Amplifier [pdf] User Manual NKSD800.1, Class-D Mono Block Power Amplifier |
