remote and power issues with my amplifier Solved

Question

Hello, I have a DX-AM LA450 amplifier, a JVC KD-R721BT car radio, and O² (oxygen) speakers installed on the rear shelf of my car. Basically, I have 2 problems:  - First, my remote isn't working properly. Let me explain: as you should know, the remote is designed to cut off the power to the amplifier once the ignition is turned off, but it doesn't! I've connected it properly to the remote slot of my car radio and to the REM slot of my amplifier, and it gets power when the ignition is on, but once the ignition is off, the power doesn't cut. My amplifier stays on. Why doesn't the power cut off when I'm connected to the right slots and my remote wire from the car radio is properly connected to the ISO and isn't cut?  - My second problem is that my speakers don't produce any sound once connected. I've checked with a tester to see if there's any power coming out of the speaker connection terminals on the amplifier, and there's nothing; this might be normal (I don't know...). I've tried all possible connections for the RCA cable and the speaker terminals, and nothing... it doesn't work... Can you shed some light on this?  For your information: all my equipment is new and none of the wires are cut. I'm posting here because I haven't found any answers to my questions online.  Thank you for your clear and precise answers (I'm a mechanic, but very very bad at electricity.... too bad for me ;) )   Configuration: Windows 7 / Internet Explorer 9.0

STARGATE43 · Accepted Answer

Just one more thing, are you sure that on the black ISO connector (power), the permanent + and the switched + are not reversed? It can still happen, even though everything is standardized, you never know.  No problems, only... solutions!!!   Please remember to mark as resolved if you consider your issue to be resolved, thank you.

STARGATE43 · Answer

Good evening, have you properly connected a + permanent to the B+ terminal of your amplifier? That is to say, a positive wire coming directly from the + terminal of your battery -- No problems, just...solutions!!!  Please remember to mark it as solved if you consider your issue to be resolved, thank you.

STARGATE43 · Answer

First of all, if I can give you some advice, take your power directly from the battery with an appropriate cable, a fuse on that same cable depending on the power of your amp, and a capacitor in the circuit to avoid damaging your battery. The capacitor charges and discharges according to the demand of your amp.  Are you also sure you used the correct remote wire (REMOTE) coming from the ISO connector?  Be careful, many people make the mistake of taking the blue wire from the radio as a remote, but it is not a remote; it is a trigger wire that is only used to activate the motor of an electric antenna. -- No problems, only... solutions!!!  Please remember to mark this as resolved if you consider your issue to be resolved, thank you.

STARGATE43 · Answer

Although apparently this blue wire also serves to provide the ignition signal to an amplifier, see the diagram at this link:  http://rueweb.com.free.fr/connecteurs/autoradios.htm  Do you have this type of connection? -- No problems, only...solutions!!!  Please mark as solved if you consider that your issue is resolved, thank you.

007du45 · Answer

Indeed, I have this type of connection. No, I haven't checked if the permanent + and the switched + are reversed because, as you said, it's standardized, but I will check that tomorrow because you never know.  Thank you for taking the trouble to help me!

STARGATE43 · Answer

Not at all, it's my pleasure, good night and see you tomorrow. -- No problems, only... solutions!!!  Please remember to mark as resolved if you consider your issue is resolved, thank you.

007du45 · Answer

I didn't have time to dive into my amp yesterday, but I went to Norauto after work and they are sending it for repair regarding the faulty speaker terminals.  As for the remote, I'll see about connecting it to the positive after the ignition of my cigarette lighter; that way I won't have to worry about it as much!  Thanks for your quick replies; I'll give you updates as soon as the beast is back.  Have a good day and take care!

STARGATE43 · Answer

Good evening, if I can give you some advice, don't connect the remote to a positive of any kind, the remote is only meant to provide a launch impulse; by connecting it to a direct or after-contact positive, you might risk damaging it, so it's better to ask for advice at Norauto instead. No problem, have a good evening and see you later. -- No issues, only...solutions!!!  Please mark it as resolved if you consider your problem solved, thank you.

Remote and power issues with my amplifier

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