Insignia NS-A1200 - Manual (Page 16)

16
Insignia NS-A1200 Car Amplifier
www.insignia-products.com
Specifications
No sound in one channel. Speaker short circuits,
disconnected speaker
cables.
Check speaker leads for
short circuits or
disconnected cables.
Reverse the LEFT and
RIGHT RCA inputs to
determine if the loss is
occurring before the
amplifier.
Amplifier turns off at
medium or high volumes. Mismatch with speaker
load impedance. Check speaker load
impedance. Make sure
that you have followed
correct speaker load
impedance
recommendations. (If you
used an ohm meter to
check speaker
resistance, remember
that DC resistance and
AC impedance may not
be the same.)
Protect LED is on. Overheated amplifier. Turn source device’s
volume down. Relocate
the amplifier to a better
ventilated place.
Speaker cable short
circuit. Separate all speaker
wires, and make sure
they are insulated.
4
Ω
150W × 1 channel, @1% THD
2
Ω
225W × 1 channel, @1% THD
1
Ω
400W × 1 channel, @1% THD
Signal-to-noise ratio 100 dB
Frequency response 15 Hz ~ 150 Hz
Variable low pass 50 Hz ~ 150 Hz
Variable subsonic 15 Hz ~ 40 Hz
Variable bass boost 0 ~ +18 dB
Phase control 0° ~ 180°
Input sensitivity 200 mV to 8 V
Input impedance 10K
Ω
Line output
impedance 100
Ω
Symptom Cause Solution
NS-A1200b.fm Page 16 Monday, May 21, 2007 11:37 PM