Subwoofer Problem, maybe major. - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 01-11-2005
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Subwoofer Problem, maybe major.

Ok, so..
Recently I have discovered that my sub is making a rattling noise. It never used to do this, it used to hit very hard, so hard in fact that it used to shake your hair.

So about 5 days ago I noticed that it wasn't hitting as hard anymore and it was sounding like crap. so I thought that there was something loose, such as a door panel or whatever else. Nothing, its comming from the sub.

So I was wondeirng if anyone else has run into this problem or heard of it? Wondering if this sub is blown or not. Just want to ask before I start tearing this whole thing apart.

Oh yea if I turn the amp down some it sounds better agian, but it won't hit as hard.

My setup is as follows: A ported box with the 12" AW1200Q With a 8002T All Audiobahn. The Amp is mounted on the side of the box

Thanks. :D
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Old 01-11-2005
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I think it's the subwoofer, but just to be sure:

Look for leaks in the box, or around the gasket that seals the subwoofer to the box. Then inspect the surround & Cone for any obvious damage. A easy test is to lick your finger and "feel" for any air leaks. If that looks OK, then move the cone up and down by hand. It should have a natural resistance to movement (even more so if you have a sealed enclosure) and should quickly spring back into location.

If you still see nothing out of the ordinary, take the woofer out and smell the coil. Notice anything resembling a burnt smell? See any wires or wrappings that look a little melted?

Ported enclosures are generally harder on a subwoofer, because that port allows air to escape from the box. You gain a few dB's in SPL but you lose air suspension that helps the woofer handle more power without damage.

Last edited by Mnemonic; 01-11-2005 at 03:23 PM.
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Old 01-11-2005
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^ agree

also, try pressing the cone in, if you hear any kind of scratching or its hard to press it, u got a blown one. the spider could be torn, or a wire shorted out.

if it is blown, u turnin the amp down is sending less power to it, there fore not exercising it as much.
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Old 01-11-2005
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Ok, thanks guys I'll try these things and I'll get back to ya.
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Old 01-11-2005
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I guess I would be wondering too, what would blow it if it is blown?

the sub is rated for 1000watt max and the amp runs 1600watt Max on 2 chanels so I am running one channel to it. Because I don't want to get the sub that I really want (2000watt Max) and blow that up too.

Thanks guys
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Old 01-11-2005
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Actually your subwoofer is 700 Watts RMS dual voice coil, and your amplifier puts out ~800 watts RMS @ 4 ohms. That's not so bad because we have basically the exact same subwoofer, and I'm putting around ~950 watts RMS (per my Amp's birth sheet) to mine. The difference is that I have a sealed box, and yours is ported, so apples to apples, my sub can handle more power.

Only downside to a sealed box is that coil is more prone to overheating, because there is no ventilation (unless you install basket out)
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Old 01-11-2005
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whats the real purpose besides cool looks to the cone outward?
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Old 01-11-2005
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Not enough power blows speakers much more often than too much.
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  #9  
Old 01-11-2005
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Alright, the more I look at this thing the more I see I need to revamp my setup.

So I was wondering if anyone had pictures of their enclosures, and if they had made them themselves or if they bought them.

Because the box that I bought was def. not made to go into a ranger and now my passenger seat won't go all the way back. lol. but I can't use a normal truck box because the sub is too long.
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Old 01-11-2005
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If the box is oversized for the driver, you will greatly reduce your power handling.
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Old 01-11-2005
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Check my cardomain site for pics of my box, and a few measurements.

I called the audiobahn help line once, and they said 1.25 is optimum size for our sub, in a sealed enclosure.

TippinOvr, just cooling and looks, and a different design options. In terms of sound? Nothing, except you may have to reverse the polarity of the speaker wire, or use a internal function on your head unit to "reverse" the low frequency so overall it's in phase with the rest of the system.
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Old 01-11-2005
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The box is the right size for the sub I made sure for that. If anything I was afriad it was going to be too small.

What I am looking at though is that when I bought this amp I took about 2 weeks to look over everything and research everything that I needed in an amp ect. and I came down to the Audiobahn A8000T and the A8002T. Now that I am looking at the specs ect. I wanted to get the 8000, but I must of had a brain fart when I was ordering and I bought the 8002 and that amp can't handle 2ohm loads, and that's what I am running it at. So I am wondering if that is the problem as well.

And well, if that's the case than I am just going to get another sub with enclosure. But, I don't want the same thing to happen to my seat if I put a 2nd sub in the cab. (It not being able to go back) Thats why I was asking for enclosure ideas.
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Old 01-12-2005
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A weak spot on ALL boxes is where the wires (usually binding posts or clips) come into the box so it's worth checking out.
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Old 01-12-2005
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That's why I drill a hole just big enough for the wire to go through, then seal with poly glue. Also those terminal posts or clips can become the "weak link" and mess with the signal.
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Old 01-12-2005
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Do you guys know of any boxes that are produced that I can buy that will fit behind the seats in a ranger though?

I want to get a new box with another sub and I was wondering if I could find one that was made that would fit behind there.
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  #16  
Old 01-15-2005
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I dont think there is a 100% fit box for a ranger, best bet is to build one, that is if you can, if not a small hatchback box may work

Last edited by karrbass4life; 01-15-2005 at 08:02 PM.
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  #17  
Old 01-15-2005
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I think there are some designed to fit the small spaces in regular cabs, but supercabs can use just about any standard box they are a bit harder to find.

I found one design here, but it appears to take up all the floorspace, not sure about seats still being usable.
http://www.velocityaudiocenter.com/F...94,c50564.html

Last edited by Mnemonic; 01-16-2005 at 01:57 AM. Reason: edited for clairification
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  #18  
Old 01-15-2005
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Yeah I don't care if the seats are still usable, if they aren't then I don't have to worry about cartin everyone around. lol


Thanks alot! that looks awesome.
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Old 02-18-2008
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I'm new here i was wondering if anyone has installed any 6x9 in a ranger, if so any pointers
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