Help with replacing Subwoofers

[Biker 10+ year member]

Help, Newbee here ...... I have 2 10" MTX 4500 subwoofers in a thunderform enclosure under the back seat of my 2002 Dodge Dakota. They are rated at 225 watt RMS and my amp can deliver 500 watt at 2 ohms. I would like to replace the 2 10" subwoofers with ones that can handle 400 Watt RMS.

I have found some like the POWER ACOUSTIK STW-10 subs that can handle the power but not sure they will work in that enclosure. Its not a box its basicly open air mounting in a plastic mount under the back seat.

Any suggestions what would work there? Can I get louder harder pounding Bass in that enclosure?

Thanks in advance

Biker

Click to read more...

 

[btlking 10+ year member]

personally i would ditch that box i dont know how much room is in there but look around and see if you can build a ported box underneath the seat and put 1 12" in there and put the 500 watts you have on it. it will get alot louder than that enclosure

 

[Biker 10+ year member]

I really want to stick with the thunderform enclosure. So can someone help me understand whats up with subwoofers and enclosures. Obviously my thunderform is not a ported enclosure. Is it considered a sealed one? How do some subs work better than others in different enclosures? I wanted a set of 10" subwoofers that could handle 600Watt RMS but they said not reccomened for sealed or open enclosures.

I just want the best loudest hardest hitting pair of 10" subs that will work in my thunderform. If the answer is to keep the MTX speakers it came with then I can accept that.

Thanks Biker

 

[DaveDSMer 10+ year member]

first of all what amp (model) are you using to power your subs so I can match up some subs for you in that enclosure.

You want a sub that wants a sealed volume of around .75-1.00 cubic feet. If you get one at the higher end of that scale you can stuff some polyfill in the enclosure to compensate.

Remember that when selecting 2 subs you need figure out what load you want the amp to be getting. For example, if you are using a monoblock amp that is 2ohm stable you want to get 2 single voice coil 4ohm subs or 2 dual voice coil 2ohm subs. But if you are doing this off of a 2 channel amp you will want to bridge the channels and at that point need it to see a 4ohm load. So either 2 single voice coil 2ohm subs or 2 dual voice coil 4ohm subs.

Also make sure you are matching amplifier RMS to sub RMS and not Amplifier MAX to sub RMS.

One more thing, check your mounting depth before buying anything.

 

[Biker 10+ year member]

Thank you for offer to help. The AMP I am going to use is a 4 channel amp. 4X250 at 2 ohms. 1000Watt amp. So I believe if I hook up 2 10" subs bridged on the amp for a 2 ohm load I can provide the subs around 500 watts.

So that brings up another question. Is that shared between the 2 subs. If so then I dont need any more than a 250 watt RMS sub. Is that right or not?

Thanks Biker

 

[DaveDSMer 10+ year member]

can you post the exact model of the amp so i can see its ratings.

the amp has to be 1ohm stable to bridge a 2ohm load to it.