What to do if Infinity 7520a has distorted audio and PROTECT LED flashes?
If your Infinity Amplifier is producing distorted audio and the PROTECT LED is flashing, it indicates a short circuit in the speaker or wire. To resolve this, remove the speaker leads one at a time to find the shorted speaker or wire, and then repair it.
What does it mean if PROTECT LED is on on my Infinity Amplifier?
If the PROTECT LED is illuminated on your Infinity Amplifier, it means the amplifier is overheated. Ensure that the amplifier's cooling is not blocked at its mounting location. Also, verify that the speaker-system impedance is within the specified limits.
What to do if my Infinity Amplifier has no audio and PROTECT and POWER LEDs flash?
If your Infinity Amplifier has no audio and both the PROTECT and POWER LEDs are flashing, the voltage on the BATT+ connection is less than 9V. Check the vehicle's charging system to resolve this issue.
What to do if my Infinity 7520a Amplifier has no audio and PROTECT LED is on?
If your Infinity Amplifier has no audio and the PROTECT LED is on, it indicates that the voltage on the BATT+ connection is greater than 16V or less than 8.5V. You should check the vehicle charging system.
What to do if my Infinity Amplifier has no audio and PROTECT LED flashes every 4 seconds?
If your Infinity Amplifier has no audio and the PROTECT LED flashes every 4 seconds, it indicates DC voltage on the amplifier output. The amplifier may need service; see enclosed warranty card for service information.
General| Frequency Response | 10Hz - 320Hz |
|---|---|
| THD at Rated RMS Power | 0.05% |
| Bass Boost Frequency | 45Hz |
| Low-Pass Crossover Frequency | 32Hz - 320Hz |
| Bass Boost | 0-12dB |
| Signal-to-Noise Ratio | 95dB |
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