^ What Orion said
For a Mono block your only options are:
1 ohm
4 ohm
16 ohm

Stereo your options are:
2 ohm X 2
8 ohm X 2

So if you are going to run that memphis monoblock, you don't have an option because You won't be able to give it a two ohm load (unless you run a single sub instead of both).

 

well cant you just loop the two subs? (i.e. just wire them together) cuz I think I saw that in a Audio Magazine before...

 

yes, you can, but you're not going to get a 2 ohm load..

 

These are basic audio principles, go and see your local shop! [img]graemlins/thumb.gif[/img]

 

Yes, and the above mentioned loads are the only possibilities from 'looping' subs

For a Mono block your only options are:
1 ohm
This method is parrallel all around. Connect all 4 + from all 4 Voice Coils (VC) and connect them all to the + of the amp. Do the same with the - VC to the - of the amp.

4 ohm
This method is series/parallel. Connect the + of the amp to the + of one VC, then from the - of that VC go to the + of the next VC from the - of that vc go back to the negative of the amp. This is called "series." With two 4 ohm VCs on one sub, this will result in an 8 ohm load. This is the series portion.
Follow these steps again for the second sub. Then you will have two 8 ohm loads. When you parallel two 8 ohm loads it drops down to 4 ohms total.

16 ohm
This is ALL series. Go from the + of the amp to the positive of the VC. From that VC - to the positive of the next. Repeat this string until all the voice coils are wired. Return from the - of the last VC to the - of the amp.

Now, I mentioned above that in Stereo your options are:
2 ohm X 2
8 ohm X 2

If YOU can tell US how to get those loads with two 4ohm DVC subs (like you have) then you can wire it up yourself. But if you didn't understand what I wrote and you can't explain to us how to do it, then go to a shop. It is not worth risking it on your own. Many shops will let you watch what they are doing. This is a much better way to learn than to learn by frying your equipment.

 

Here is a diagram for you.
Top left: ALL Parrallel 1 ohm final
Right Centre: Series Parrallel 4 ohm final
Bottom left: ALL series 16 ohm final



Any wire configurations OTHER than these will cause one or more of the following
a. Cause a short circuit
b. Give different amounts of power to differnt VCs
c. Leave one or more VC with no power.

Here is some impedance math for you:

Series: add the impedance loads together 4+4+4+4
Parrallel: reciprocate the impedance load: 4 becomes 1/4
Add all of the amounts together
1/4 + 1/4 = 1/2
1/4 + 1/4 + 1/4 + 1/4 = 1/1
Then reciprocate the numbers again:
1/2 becomes 2
1/1 becomes 1

This is the best I can do through the internet

[ February 23, 2004, 01:29 PM: Message edited by: maltesechicken ]

 

Wow, great explanation malteschicken [img]smile.gif[/img] Love the diagram.

 

ok thx dude, I was just wondering my self, my buddy does all the wiring for me...

 

but what sounds better? 4 ohm final or 1 ohm final? I realize 1 ohm will be louder...

 

they will both sound th exact same.. but the 1 ohm will get more power from your amp if it can handle it..