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I just have very very basic knowledge about electrics/electronics and car audio. I am thinking of changing stock speakers of a 27 years old car. There are four speakers, 2 on front door panel, 2 on rear, inside window.

All of them shows 20W Nom, 40W Max, 4 Ohm.

My Pioneer DEH-1450UB stereo's box says it has 50W x 4 Mostfet output. It was working fine with stock speakers.

My new speakers are;

  • Alpine SXE-1025S 4" (10cm) Coaxial - 25W RMS, 180W Max, 4 Ohm (for front door)

  • Alpine SXE-1725S 6-1/2" (16.5cm DIN) Coaxial - 40W RMS, 220W Max, 4 Ohm (for rear)

The problem is, the wires connected to my rear speakers are AVSS 0.35mm (I think equals to 22 AWG) wires and their amperage limit seems below 3.3A.

Would it lead to any problem if I will connect those speakers to that wire? Should I change the wires or shouldn't worry about fire hazard or anything?

I am not looking for high volume or detailed audio, I just need something mediocre.

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1 Answers1

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The stereo can put out a maximum of 50 watts per speaker and it has been working fine -- no overheating, no melting, no fire. Attaching higher power speakers won't make the stereo produce more power. Therefore it is safe to keep the existing stock wires.

Note that if you play the stereo at full power -- 200 watts total inside a car -- you will suffer a hearing loss in a short time. Since you would never do that intentionally, the stereo is never really putting out 200 watts. It's probably not much more than 5-10 watts for normal listening.

MTA
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