Why do you half the power

[psycho72 10+ year member]

I keep reading people posting get this get that it'll be 1000watts (500 each speak) or 1500 (750 each speak). Lets say for arguments sake I had X amp that was 2ohm stable rated at 200x2 @4 Ohms, that would mean if I bridged it that would be in the neighborhood of 400x1@4Ohms and if I were to show it a 2Ohm load that would put power near 800wx1@2Ohms, correct?

Then I have two Y subs, 15 inch dvc's. I then wire the subs together for a 4 Ohm load and connect my amp. As the amp is bridged it sees half of whatever load is attached. A 4Ohm load becomes 2Ohm and a 2Ohm load becomes 1 Ohm. Is this correct so far? So then I have it all hooked up and my amp is putting out 800x1@2 Ohms and I connect my speaks which are showing a 4 Ohm load which the bridged amp only sees half of so as far as the amps is concerned it is putting out 800x1@2Ohms.

Now should'nt the speaks be getting 800w each as it is the same load same circuit and the amp is dumping 800 watts out. Energy does'nt give a F about how many speaks it only cares about how easy it is to flow through the circuit and complete it, right? Please set me straight on this.

Click to read more...

 

[Nikuk 5,000+ posts]

No.

http://www.bcae1.com/ohmslaw.htm

Ohm's Law.

To make it easy: A power supply (amp) can only put out so much power. In your example (800X1@2), each 4ohm motor would receive 400 watts.

 

[JimJ 5,000+ posts]

Hmm...that's a very good tutorial...covered it a whole lot better then when I learned the "circle" method for getting my ham license.

 

[Nikuk 5,000+ posts]

Hmm...that's a very good tutorial...covered it a whole lot better then when I learned the "circle" method for getting my ham license.

One of the best I've come across yet.

 

[psycho72 10+ year member]

No.
http://www.bcae1.com/ohmslaw.htm

Ohm's Law.

To make it easy: A power supply (amp) can only put out so much power. In your example (800X1@2), each 4ohm motor would receive 400 watts.

I tried reading that link but I can't do it right now, I will have to take some time because my little brain can't get it right now. But your comment mentions each 4Ohm speaker I am saying wire each speaker to 2Ohms (parallel) and then the two 2Ohms in series. I will reread it a few times but this crap is confusing //content.invisioncic.com/y282845/emoticons/verymad.gif.3f39c5c2fd57527b671fad3efdfac756.gif

 

[Nikuk 5,000+ posts]

if you have One speaker that is Dual 4ohm, you can ONLY wire it to 2 ohm or 8 ohm.

From there you can wire a pair upto (series) 4 or 16 ohm. Or wire down to (parrellel) 1 or 4 ohm.

 

[squeak9798 5,000+ posts]

if you have One speaker that is Dual 4ohm, you can ONLY wire it to 1 ohm or 8 ohm.From there you can wire a pair upto (series) 2 or 16 ohm. Or wire down to (parrellel) 1 or 4 ohm.

LOL....Ok, you lost me? ONE dual 4ohm/coil sub can be wired to 2ohm or 8ohm. Two pairs can be wired to 1ohm, 4ohm or 16ohm.

 

[Nikuk 5,000+ posts]

LOL....Ok, you lost me? ONE dual 4ohm/coil sub can be wired to 2ohm or 8ohm. Two pairs can be wired to 1ohm, 4ohm or 16ohm.

//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

thats what I said. but not quite. You see, I said... then you said.... and one DVC, and two pairs... and now I've gone all cross eyed.

What?

 

[Nikuk 5,000+ posts]

if you have One speaker that is Dual 4ohm, you can ONLY wire it to 2 ohm or 8 ohm.

And then...

From there you can wire a pair of Dual 4ohm speakers upto (series) 4 or 16 ohm. Or wire down to (parrellel) 1 or 4 ohm.

-or-

ONE dual 4ohm/coil sub can be wired to 2ohm or 8ohm.

And then....

Two pairs (?) can be wired to 1ohm, 4ohm or 16ohm.

//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

*edit* I got it now. Typo, derrrr.

 

[squeak9798 5,000+ posts]

And then...

-or-

And then....

//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

*edit* I got it now. Typo, derrrr.

//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

LOL....um, yeah....... I think:

Two pairs (?) can be wired to 1ohm, 4ohm or 16ohm.

Should have read two DVC 4ohm/coil subs can be wired to 1ohm, 4ohm or 16ohm.

Bah, screw car audio; I just want to dance

 

[Nikuk 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif
LOL....um, yeah....... I think:

Should have read two DVC 4ohm/coil subs can be wired to 1ohm, 4ohm or 16ohm.

Bah, screw car audio; I just want to dance

And that! folks, is the moral of the story.

 

[Acidburn 5,000+ posts]

i'll dance with you squeak //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[3.5Max6spd 10+ year member]

not many 2ch amps, or multichannel a/b's for that matter are 2ohm mono stable-keep that in mind if you plan on bridging

 

[psycho72 10+ year member]

yeah but if you have two 2ohm dvcs? Then I could wire them into 2Ohms for the pair right? And my amp well that is a early Hifonics when they were the shyt and if takes 2Ohm mono just fine (well at least it used to as it has been a while since it was wired like so, actually when kicker was stillwater designs and they were worth something).

 

[squeak9798 5,000+ posts]

yeah but if you have two 2ohm dvcs? Then I could wire them into 2Ohms for the pair right?

Yes. Wire them in series-parallel