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Either there is a malfunction on the amplifier , or more likely there is a short on the speakers cabling. If the cables are shorted, or broken, not allowing a sufficient load, the amplifier will protect itself by tripping a fuse. After a while, or on restart, the fuse will rearm itself, only to be tripped again by the malfunction.
What does it mean when the LEDs flash on my amplifier?
With most recently produced Phoenix Gold amplifiers, a
flashing/blinking LED is an indication that the unit is in protect mode,
usually due to an overcurrent condition caused by an internal short,
external short (speakers), or low impedance. Overheating will also
cause the amplifier to shut down temporarily.
If amplifier remains in protect mode, power down the amplifier,
disconnect the speakers, and power up again. If LEDs continue to flash,
there is probably an internal problem with the amplifier that will
require service attention to fix.
Be sure to fuse the power wire within 12” of the car's battery. This will protect the car's battery in case of a short circuit between the power amplifier and battery. THIS IS A MUST, the amplifier's built-in fuse will only protect the power amplifier not the car's battery.
Use high-grade wire connectors. Use Proper power wire size for maximum current transfer and safety. Improper size power and ground wire can reduce the amplifiers power and poses a risk of damage to the amplifier and the vehicles electrical system. Please follow the recommended "Amplifiers Power Cable Requirements" to ensure maximum power transfer and safety.
To ensure maximum power transfer and secure safe connections, it is recommended to use high-grade barrier spades (for connection at amplifier) and terminal rings (for connection at battery).
Do not run any wires underneath vehicle. Exposed wires have a chance of being cut or damaged. It is best to run all wires through the vehicle under the carpet and/or side panels. This lends to a cleaner installation and less risk of damage.
Use caution when mounting amplifier. Remember there are many electrical wires, gas lines, vacuum lines, brake lines, as well as a gas tank in the automobile. Make sure you know where they are when mounting the amplifier to avoid puncturing lines, shorting wires, or drilling holes in the gas tank.
To avoid possibility of induced noise from the car's electrical system (i.e. popping noises or engine noise), Keep signal wires (Speaker or RCA) away from any electrical wires.
In order to reduce the chance of ground loops (i.e. engine noise); make the grounding wire as short as possible to reduce the wire's resistance. Also, when using multiple components, make sure all units are grounded at the same point.
Avoid sharp edges when running the wires. When laying wiring inside the car, watch for welding burs in channels throughout the car. If necessary adequately grind, finish sand or fill in around any ruff spots so wires will not be punctured by sharp protrusions. Use a grommet to protect the wire when running through the firewall.
Hello hexi_86, The amp is going into protection mode. If it goes into protection immediately upon power up, either the amp itself is defective or it is getting too high or too low of a voltage or current, or the outputs are shorted. 1) Make sure that the battery voltage, as measured at the amplifier?s +12 volt and ground terminals, is 11 volts or more (your alternator voltage is typically about 13.8 volts). So if you have 11 or less at the amp terminals, your wiring is too small or defective. 2) Check all +12 volt and ground connections. 3) The use of loudspeaker impedances below the recommended minimums will cause the amp to draw excessive current. Check by removing the speaker wires one at a time to locate a shorted wire or defective speaker. 4) Check all speaker connections. 5) Remove RCA inputs and see if the amp powers up properly. A shorted or grounded RCA cable can cause the amp to go into protection. If all these check out, the amp itself is probably shorted internally, most likely the output MOSFET's. In this case it needs professional repair or replacement. Hope this helps.
Remove amp from vehicle, connect Directly to Battery, then short REM line to Ground, see if amp comes out of "protect" If it does, you have either a short or a bad connection on your power wires between amp and battery, If testing amp directly to battery and it doesnt come out of protect, it meens you fried the amp and likely your problem is wiring between the amp and the speakers, or even the speakers themselves (shorted) .. If you Drive your speakers hard enough they can overheat and short out after a short blast... anywhere from 10seconds to 45 mins.. depends on many variables.
Sounds like a wiring short somewhere in the powerline from the battery to the amp. I'm guessing the fuze you're refering to is the one inline from the vehicles' battery to the amp. You'll need to find the short, fix it, then replace any blown fuzes before the amp will power up. Just take your time and go over all the wiring to and from the amp. Make sure the battery power cable hasn't shorted against the firewall(use a rubber grommet here), no screws have gone through it while reinstalling interior panels, and that your amps terminal connections aren't grounding out against each other due to stray copper strands.
Appears to be an issue with current. Is the speaker the correct impedance for the amplifier ? Have you confirmed there are no short circuits in the wiring ? I'm not familiar with this particular product,
The alpine catalogue gives recommended amp/speaker combos. If you don't have an aplpine sub, then look at the specs and find a similar one. You may be trying to load the amp too heavily and it will protect itself.
I'd be inclined to check to make sure there isn't a short circuit somewhere in the output lines. Maybe a wire is crushed against the car's body or bare wires touching or badly fitted RCA plugs. All of these things could activate the protection circuit. If you have a multimeter it would make life easier but don't forget your speakers will show up as 4 ohms so that's not a short.