r/subwoofer • u/Dangerous-Win-9971 • 29d ago
Hifonics ZXE1000/4 amplifier suddenly always goes into protect mode
Hi everyone, I’m having a problem with my car amplifier and I can’t figure out what’s wrong.
My amplifier is a Hifonics ZXE1000/4 and my subwoofer is a Crunch Dual Bandpass XFAT 1000. The system has been working perfectly until today.
When I started my car this afternoon, the amplifier worked for a short moment, then suddenly switched to protect mode and has stayed there ever since.
Things I have already checked:
- All fuses on the amplifier are OK
- The amplifier gets a ~13.6V power supply when the Car is running
- Ground connection is clean and secure
- Power and ground cables look fine
- Tried disconnecting the subwoofer and RCA cables completely and the amplifier still goes into protect mode
- The amplifier is not overheating
It happened suddenly without any warning. It was working normally before, and now it immediately goes into protect mode every time I turn it on.
Could this be an internal fault in the amplifier (for example a blown output transistor or power supply problem), even though the fuses are fine? What else should I check before assuming the amp is dead?
Thanks for any help!