Owner's Manual

3
The Red LED lights up when the input signal is too high.
Air Intake Vents
7
HVA1/HVA4 has a variable speed internal cooling fan. This allows the air to
flow through front grill to keep the amlifier cool even under extreme operating
conditions. Please keep these vents clear and free from any obstructions to
insure proper cooling.
FRONT PANEL
Power Switch
It switches ON/OFF the unit main power.
Level Control
The power protect LED is Green for normal operation.
And Red in protect mode.
Signal LED
The Green LED light’s up when there is signal present in each respective channel.
Protection LED
The Level controls allow you to adjust the volume level.
Power/Protect LED
Clip LED
6
5
4
3
2
1
2
3
6
7
4
5
1
6
7
1
4
5
3
2
In normal operation, the LED will not illuminate; if the LED turns Red, it means the unit is in
thermal protection. The speaker load disconnects from the amplifier outputs when this occurs.
The thermal temperature must be reduced either by ventilation and/or the input signal level is
reduced. When the amplifier is at a safe operating temperature the output protection circuitry
will then connect to the outputs and the amplifier will resume normal operation.