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Old 08-29-2011, 10:09 PM   #1
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Mach 460 bass issue

I have a 98 GT with the stock mach 460 sound system, along with the factory head unit. About a week ago as i was driving i could hear what sounded like interference from the engine, coming through the speakers (as engine speed increases the sound became louder and dropped when i shifted to a different gear) this was occuring only with the radio and not with the cd player. Yesterday i unscrewed the antena to make sure that it wasnt the cause of the problem, and when i reattached it there was no bass whatsoever when i used the radio or cd player (i.e. There was audio from the speakers but no matter how much i turned up the bass, nothing changed). I checked all the fuses and they all seemed ok, anyone have any ideas what could be wrong? Any help would be greatly appreciated.
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Old 08-29-2011, 11:16 PM   #2
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Re: Mach 460 bass issue

Sounds like some kind of GROUNDING issue. You don't have any stereo shops near you?
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Old 08-30-2011, 12:59 AM   #3
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Yea make sure your ground is all good. And that all ur wires are hooked up properly.
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Old 09-28-2011, 08:13 PM   #4
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Re: Mach 460 bass issue

Having very similar issues with my Mach 460. I suspect my amps are bad eventhough I do get sound out of them. Is there a way o est the amps??
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Old 09-29-2011, 10:09 AM   #5
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Well if your amp is dead the speaker won't work but I'm guessing your wires are loose
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Old 10-01-2011, 09:02 PM   #6
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I have the same problem im 16 an my dad builds classic cars for a living but he has no clue on my 98 mustang gt my first car we took the amps out everything the speakers work but it has to be turned up to like 25 because only the top door speakers work please help me get though this
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Old 10-02-2011, 12:35 AM   #7
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On the Mach 460 system the radio powers the tweeters and the external amps power the woofers for your mid bass. If you lost your bass, the amps are probably bad or the output from the radio to the amps is bad. One way to test it would be to pull out the radio and find the harness that feeds the amps. You can then run audio signal from an mp3 player from the headphone jack or substitute an aftermarket radio to make sure signal is coming from the radio. Something else to test would be to make sure the amps have power and the remote turn on to the amps is good (should be 5 volts).
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Old 10-02-2011, 01:36 PM   #8
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Quote:
Originally Posted by F150tr186
On the Mach 460 system the radio powers the tweeters and the external amps power the woofers for your mid bass. If you lost your bass, the amps are probably bad or the output from the radio to the amps is bad. One way to test it would be to pull out the radio and find the harness that feeds the amps. You can then run audio signal from an mp3 player from the headphone jack or substitute an aftermarket radio to make sure signal is coming from the radio. Something else to test would be to make sure the amps have power and the remote turn on to the amps is good (should be 5 volts).



Thanks I well try that and were is a drag strip around Lubbock tx please help find one want to get all my friends to gather and go have fun one day
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Old 10-09-2011, 10:23 PM   #9
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Finaly got my stereo hooked put now I just got to get a amp and 2 12'' subwoofers and I well be banging
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Old 10-14-2011, 10:46 AM   #10
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Had same problem in my '03 the radio would make noise along with the engine, apparently it was telling my my alternator was bad, it had a open diode, so I replaced it and radio works great now
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Old 10-15-2011, 12:41 PM   #11
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My bro an me just redid the wiring and got it working and the we hooked up a bother amp a small300
But I well soon get a bigger one and a 750 watt sub
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Old 11-27-2011, 06:11 AM   #12
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is probably the amps going bad man,, it always hapens on the mach systems
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Old 11-29-2011, 11:32 AM   #13
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Re: Mach 460 bass issue

does anyone know where the amps are on a 02 convertable and where i can find an oem replacement (looked on ebay with fatory part number..., no luck)
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Old 11-29-2011, 12:07 PM   #14
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I belive is behind the rear seat under next to the convertible top motors but I seen older stangs whit one under the radio, ?
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Old 11-29-2011, 01:06 PM   #15
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Re: Mach 460 bass issue

thanks
just wondering if it would be easier to go through the trunk or the rear seat?
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Old 11-29-2011, 03:11 PM   #16
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Through the rear seat. All you gotta do is remove the convertible boot, it jut snaps off and pull it away and they are right there
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