What does the red light on my amp mean?
protection mode
The BX250 and many other amplifiers use the same solid red light to indicate both that the signal is muted and that the amp is in protection mode. If your unit goes into protection mode, it is a good and bad thing- good that further damage is being prevented, but bad in that it may delay the gig.
When does stereo use power from yellow or red wire?
Much like the stereo will power through the red if the yellow is not provided. In regards to amps, if you provide power to the blue wire, and the red wire is not connected or making connection properly, the amp WILL try and power it’s self from the signal wire…
Can you connect an amplifier to an aftermarket stereo?
If you have an aftermarket stereo, you’ll use a set of RCA cables instead of one of the 9-wire cables below. Refer to our article about adding an amp to an aftermarket stereo for more details. Usually, you’ll be installing a 4-channel amplifier with speaker-level inputs.
What do you need to connect an amp to a factory radio?
You’ll need one for the amp’s input and the other for its output. These cables will act like a “T-harness” to connect your amp to the factory system. Behind the factory radio, you can access all of the speaker wires in one place.
When does an amp turn on in a car?
The amp turns on when an input signal is present. This means you don’t use the ninth wire (the blue wire) of either cable for this installation. Before you run these two 9-wire cables through your car, mark both ends of one cable with a piece of electrical tape.
Much like the stereo will power through the red if the yellow is not provided. In regards to amps, if you provide power to the blue wire, and the red wire is not connected or making connection properly, the amp WILL try and power it’s self from the signal wire…
Which is the main supply wire, yellow or red?
Then remove the fuse feeding the yellow wire. It the HU stays powered-up, then the Red (switched) is the main line power. Otherwise, it must be the yellow. The yellow 12v constant is the main supply wire. The red wire is simply a turn on wire. There are many things you can look at to arrive to this conclusion; 1.
Which is the power source–yellow or red?
So we all know that Yellow is constant 12v and red is switched 12v. Which one is actually expected to supply power to the unit for the internal speaker amp? I have seen some radios claim that the primary power comes from the constant 12v, and the switched 12v is only used as a signal wire to tell the radio to turn on.
Why does my car antenna pop when the radio is turned off?
They also said that the accessory wire should cut voltage immediately when the radio is turned off. The fact that mine retains voltage (thereby leaving the amp on for a couple of extra seconds, enough time to give a loud “pop”) may be due to capacitance in the car’s antenna amplifier, which I have also connected to the accessory wire.