F
EATURES AND BENEFITS
DC Offset Protection
This circuit protects the output of the amplifier against DC voltage. If for some reason DC
voltage is detected at the output stage, the amplifier will shut down protecting the
speakers from direct current.
Short Circuit Protection
The circuit protects the amplifier from damage due to a short found in the speakers or
wiring. If one of the speakers or its wiring comes in contact with ground, the amplifier will
shut down. To resume normal operation, correct the problem and turn the head unit off,
then back on. The amplifier will reset and play again.
Thermal Protection
To protect the amplifier circuitry against damage caused by prolonged exposure to high
temperatures, a thermal protection circuit is activated if the amplifier reaches excessively
high operating temperature. Once the thermal circuit is activated, the amplifier will shut
down to cool off. The amplifier will automatically turn back on once it cools down to a safe
operating temperature.
Power / Protect Indicator
The power L.E.D. Illuminates green when the amplifier is on and receiving power. The
protect LED Illuminates red when the amplifier has gone into protection mode.
Built-in Crossover
The Solar Series amplifiers include a built-in variable **high and low pass crossovers.
The crossover features a variable frequency selection (30Hz ~ 250Hz Low Pass and
60Hz ~ 1.2kHz High Pass ) for precise high or low pass filtering. **Except QS1500D
which has a 40 ~ 150Hz low pass filter.
Bass EQ
For added low frequency performance the amplifiers are equipped with 0~12dB bass
boost @ 45Hz.
Stable To 2 Ohm Stereo Mode
The QS2150, QS2250, QS4150 and QS4250 are stable down to 2 ohms in stereo mode
and 4 ohms in bridged mode. The QS1500D is stable to 2 ohms mono.
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