First smoke, now no speakers?

i didnt completly follow, but the deck smoked, than no sound, replaced deck (first thing i thought to do) still no sound, you checked wires for physical dmg nothing... so, some cheap amps have fusing inside for what ever reason, also there SHOULD be some fusing on the amp, and in line fusing for the power to the amp, i'd check all of these, you didnt mention if the amp had any lights on. I'd check the fuses next, than the wires for physical damage, check contanuity if at all posible with a multi meter, to make sure theres no micro burns that burnt out the wires. but thats really only an extra step, if the fusing is good, its only safe to assume the amp is blown, the speakers shoudlnt effect your deck, or your amp, but if your running it for a period of time at the wrong ohm rating, such as 2 ohm speakers on your amp when its not rated for it even fi you have 2 4 ohm speakers..if you connect them at the same time you're going to create a 2 ohm load, as far as i know, that sounds most likely what happnd to me.

 

well you know the deck works its new, and you know the old wire harnest works, doing all that is quite usless, especily if it's not even wired into the new wires that were ran for your new speakers, asuming you ran new wires for those. i perosnaly took my old ones out, but thats me, some like to keep the option there, anyhow, waste of time..your most likly looing at a dead amp , like i said you probobly had the 2 speakers hooked up at once, or the one you were testing was rated at 2 ohms and your amp wasnt...thats the best guess i could come, or it could just be a complete fluke blown amp, they can blow at any moment, its the nature of electronics, they sometimes have nano cratures in soder joints, or in the solid state devices, just stuff like that.

 

whoa your confused lol

alright, you told me you had an amp in the car, 4 channel i assumed, and an after market deck...than you said one of the things you were doing to trouble shoot was put the factory speakers in and wiring them back to the deck directly, am i wrong?

 

One question... did your mustang come with the mach 460 system in it? If you do or you are not sure, check under the rear deck near the speakers and see if anything is there.

report back to us what you see.

 

that could be a possibility. try this. from your HU just run speaker wires to a speaker to see if it will work that way, if it does then you know there something wrong with the stock wires. then just run new wires.

 

thats why i told you to check the continuity in the lines, you should be able to reach the end behind the head unit and the line on your doors no problem, the back seat might be a little hard to check might need to splice a line. it's highly unlikly they all fried to an extent that you had no fuzz or noise though, but if your running stock lines..it could happen, they usialy aren't the best wires. the ones in my car are garbage.

 

Need to check it out with a volt meter. If a radio has a short on any speaker wire it will shut down all audio to protect itself.

Set the VOM (volt meter, NOT a test light.) to volts, place the black lead to ground, probe the speaker wires with the red lead. Here is what you should see. If there is no short, all the speaker wires will read about 1/2 of battery voltage. All the speaker wires (the radio is on) will have around 6-volts on them. All speaker wire voltages will be within a 1/10 of a volt to each other.

A shorted speaker wire will read near 0-volts. A bad radio will show seriously varing voltages. For example if a speaker wire reads 4 volts and another reads 6 then the output is bad.

Time to quit guessing and figure this thing out