Why is the protection LED on my Sound Magus ET90.4 Car Amplifier?
The protection LED might be on due to short circuits on the speaker leads, so check for any shorts. Also, ensure the speaker load isn't beyond the minimum. Try removing the speaker lead and resetting the amplifier. If the LED remains on, the amplifier may be faulty and require servicing.
What to do if my Sound Magus ET90.4 Car Amplifier will not power up?
First, ensure you have a solid ground connection. Next, verify battery power is reaching the (+) terminal. After that, inspect all fuses and replace any that are blown. Finally, confirm that the Protection LED is not lit.
Why is my Sound Magus ET90.4 getting very hot?
Ensure that the minimum load impedance for your amplifier model is correct. Also, make sure there's good air circulation around the amplifier. In some cases, you might need to add an external cooling fan.
Why is there distorted sound coming from my Sound Magus ET90.4?
Check that the input level control is appropriately set to match the head unit's signal level, keeping it as low as possible. Also, verify that all crossover frequencies are properly configured. Finally, inspect the speaker leads for any short circuits.
What to do if there is no output from my Sound Magus Car Amplifier?
Check that the RCA audio cables are correctly plugged into the proper inputs. Inspect all speaker wiring. Also, check both the headunit output and the amplifier level setting.
How to fix low output on Sound Magus Car Amplifier?
Try resetting the level control. Also, check the crossover control settings.
General| Brand | Sound Magus |
|---|---|
| Model | ET90.4 |
| Category | Car Amplifier |
| Language | English |
Proper connection of speakers to amplifier terminals, plus to plus, minus to minus. Avoid chassis ground.
Connecting the +12V power cable with an inline fuse near the battery+ terminal. Use appropriate cable gauge.
Connecting the remote terminal to the source unit for automatic amplifier power control.
Connecting the ground cable directly to bare metal chassis for optimal grounding.
Connecting audio sources via RCA inputs; requires minimum 200mV level. Use quality cables.
Buffered RCA output signal for daisy-chaining other amplifiers.
Output signal to control other amplifiers' startup and shutdown.
Adjusting gain to match source output, not volume, to prevent distortion.
Using LPF/FULL/HPF selectors and frequency adjustive knobs to manage audio frequencies.
Information on the 2.4G high gain antenna for Bluetooth connectivity.
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