Dual voice coil subwoofer?

Question

ok i have my dual voice coil subwoofer hooked up using only one voice coil....wait that's not the question!

people have been powering the subs this way for a while it just takes some thought to realize the simplicity of it....

since my sub is 300rms @ 4 ohms and i have is at 4 ohms since it's a dual 4ohm vc sub

ok so the question is can i keep mu current amp hooked up to one voice coil like it is....and then get another amp of the same kind and use it on the other voice coil....????

so would it work....and if so how will it sound?

Answer 1

why not like, bridge them up or something? some amps won't master slave right though.

sounds weird, i wouldn't try it

Answer 2

Yes, but you would want to use a strapable amp.  You could also do this with two of the same exact amps, and match the outputs with a scope.

But the best thing to do is buy a bigger amp and wire to a 2ohm load.

Also if a sub is rated at 300W RMS, each coil is rated for 150W RMS not 300W to each coil.

Answer 3

This is possible BUT highly discouraged.  The reason is because if there is any difference in the signal between the two amps you will damage your sub.  So if you somehow get the output of the two amps to match really closely then you could do it.  Again, this is extremely hard to do and will likely result in a blown sub.  An o-scope would be the recommended tool to set this up, like mentioned previously.

When you only connect 1 voice coil of a DVC sub you don't actually halve the power but it is reduced about 15-25%.  Although it says 300w RMS that is rated for both voice coils NOT one.  Wiring only one voice coil is not a recommended way either because most people don't know that the sub's power handling is reduced.  It is also not recommended because it changes the T/S parameters of the sub which means it will change what enclosure works best for it  (that is another topic though).

One last thing to consider before you try to attempt this.  Say you are contemplating on trying this.  What would you get out of it?  Everytime you double the power you only gain 3 db.  This is not very much and hardly worth the risk of damaging your sub.  Also, your sub can only handle 300w total so if you have 300w wired to a single voice coil you are lucky that sub is still working.  If you try and double that you are pretty much guarenteed a blown sub.

Good Luck!!!

Answer 4

Okay, you can get away with wiring one voice coil.  But remember by doing this you have to half the power handling rating.  So, if you have a DVC 4 ohm sub that is rated at 300W, you should only run 150W to the one voice coil.

Never use two different amps to wire one amp to one coil UNLESS the amps are strappable.  It's tough to find low powered amps that are.  It's usually found in high power applications where a very high powered sub can take on two relatively high powered amps on by itself.  Best thing to do is sell your small amp and just put a little more money into getting a bigger amp.  Just makes more sense, to be honest.