Not your run of the mill Mach 460 issue

96Mystic1189

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Guys I seem to have the opposite problem as everyone else when it comes to Mach 460 issues.

Both of my rear amps work fine because I get sound from the front and rear mid range woofers. My issue is that I only have my front tweeters working, the back tweeters do not work. It cant be the head unit because it is obviously turning on the amp in the dash because I have front tweeters. Anyone ever had a front amp go bad in a way like this?
 

evilcw311

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True soundstage is created with no rear fill. Upgrade your front speakers and let the rear tweeters stay off.

Trust me, you wouldn’t notice much even if they did work.


Sent from my iPhone using Tapatalk
 

ttocs

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if you swapped out the deck and didn't cross over the tweeters more then likely they are blown. To find out you will need to test them with a ohm meter.
 

ttocs

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it powers them but if I am not mistaken the signal was split and crossed over prior to the amp.
 
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96Mystic1189

96Mystic1189

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Is one of the pre-amps from the special mach harness for the tweeter am, or are both of the pre-amp connections for the back amps?
 

ttocs

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it splits somewhere in the dash harness and goes down to the tweeter amp in the dash. I normally just bypassed the amp and hit the bypass harness and then installed a 1000 microfarad capacitor that took the bass out of the tweeters.
 
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96Mystic1189

96Mystic1189

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Is there a reliable wiring diagram of an early mach 460 system? I always find ones for 01 and up which is slightly different I think.
 

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