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Power Output: The Nakamichi NGTA602 Class AB 4-channel amplifier
delivers the following power output (RMS Power Output @ 1% THD+N, 14.4 VDC):
- 60 watts x 2 @ 4 ohms
- 90 watts x 2 @ 2 ohms
- 180 watts x 1 bridged into 4 ohms
Protection Circuitry: The amplifier features protection
circuitry for thermal overload and short circuits. The LED on the side of the amp glows red if the amp goes into protection mode.
Design: The NGTA-series amplifiers feature all of the
connections and controls on one side. This gives the amp a clean look, and makes
it easier to access the controls.
Gain Controls: The NGTA602's rotary gain controls let you match the
amp's input sensitivity to the output of the source unit. The low-level input sensitivity
range of the amplifier is 200mV to 5V, while the high-level sensitivity is 400mV
to 10V. A small
screwdriver (not included) is required to set the gain.
Crossover: The amp features a 12 dB/octave crossover that
can be configured as High-Pass, Low-Pass, or set to Off for full range
operation. The crossover has a continuously variable cutoff frequency between
50Hz and 200Hz. You'll need a small screwdriver to adjust the crossover
Bass Boost (Q-Tune): The NGTA602 has a selectable +6dB bass boost,
centered at 45Hz. This is useful when bridging the amplifier to power a subwoofer.
Terminals: The Nakamichi NGTA602 uses gold-plated set-screw
terminals for the +12V power, ground, turn-on (remote) lead, and speaker
outputs. The set-screws can be tightened/loosened with the supplied 2mm and 3mm
Power/Ground: The +12V Power and Ground terminals will
accept bare wire up to 8 AWG. It is recommended that you use an
8 AWG power wire to the battery, with an in-line 50A fuse installed no more than
18" from the battery terminal. An 8 AWG ground wire (minimum) should be used, and
attached to a metal area close to the amplifier.
Remote Turn-On: The Remote screw terminal will accept bare
wire up to 8 AWG. Typically, an 18 AWG turn-on lead is included in an amplifier
Speaker-Level Inputs: The amp includes a Speaker Level
Input harness for connecting the amp to a factory radio or aftermarket head
unit without preamp outputs. You should splice left and right speaker wires from
the head unit to the harness and plug the harness into the amp.
Line-Level Inputs: The amplifier is equipped with a pair
of gold-plated RCA inputs for connecting stereo RCA patch cables from the head unit to the
amp. If you are bridging the amplifier and have only one input, a "Y"-adapter will be needed to connect the left and right
Speaker Outputs: The amp features set-screw terminals for connecting
two speakers in
stereo or one speaker in bridged mono. In bridged mode, you should connect the Left + and the
Right - terminals. The terminals will accept bare wire up to 10 AWG. It is
recommended that a minimum of 12 AWG speaker wire be used.