Power Output: The Nakamichi NGTA602 Class AB 2-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 @ 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 control lets 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 frequency.
Bass Boost (Q-Tune): The NGTA602 has a selectable bass boost
(0dB or +6dB), centered at 45Hz. This is useful when bridging the amplifier to
power a subwoofer.
Terminals: The NGTA602 uses gold-plated set-screw terminals
for the +12V power, ground, turn-on (remote) lead, and speaker outputs. The
set-screws are tightened/loosened with the supplied 3mm Allen wrench.
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 25-amp (minimum) 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 RCA inputs.
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 8 AWG. It is recommended that a minimum of 12 AWG speaker wire be
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