Changed setup from 8 ohms to 4 ohms

[thedj 10+ year member]

ok so I changed my sub wiring from 8 ohms to 4 ohms, so first it was playing at 300rms and now its playing at 600rms but I dont really notice a difference? do I need to change some settings on my head unit?

also I think theres some disturbance, like something is rattling? that didnt happen before..

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[Phoenix Risen 10+ year member]

300 watts isnt that much of a difference so its not going to be like adding 1k to it. the rattle could just be resonance that didnt show its self before. i went from a 10 to a 12 before the setup that i have now and there wasnt much difference except that the car rattled a little more than with the 10.

is the noise when the system is up or down

 

[brmcm15 10+ year member]

300 watts isnt that much of a difference so its not going to be like adding 1k to it. the rattle could just be resonance that didnt show its self before. i went from a 10 to a 12 before the setup that i have now and there wasnt much difference except that the car rattled a little more than with the 10.
is the noise when the system is up or down

300 watts is kinda of a big difference.

what kind of sub is it? what amp are you using? what kind of enclosure is it in?

the rattling could be many things. the sub, the car, a loose panel, etc..so try to find out what it is while its playing

 

[Stalin-ohaulic]

How do you go from 8 ohms to 4 ohms?

 

[CRXBMPN 5,000+ posts]

How do you go from 8 ohms to 4 ohms?

this ^^^^ ??????

I dont see how this is possible, please list your equipment.

 

[Vossy 10+ year member]

I was wondering the same thing,

How do you go 8 to 4

 

[thedj 10+ year member]

How do you go from 8 ohms to 4 ohms?

this ^^^^ ??????
I dont see how this is possible, please list your equipment.

I was wondering the same thing,How do you go 8 to 4

I have 2 dual voice coil 4 ohm JBL Subs, first I had it wired so the positive and negative from one sub was going to the positive on and negative on the amp, and the same for the other sub going to the other positive and negative, so it was wired at 8 ohms because each sub was wired at 4 ohms each, so now I wired it up like this

 

[misfit138 5,000+ posts]

300 watts isnt that much of a difference

It is when the 300 watts has doubled your power. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Stalin-ohaulic]

I have 2 dual voice coil 4 ohm JBL Subs, first I had it wired so the positive and negative from one sub was going to the positive on and negative on the amp, and the same for the other sub going to the other positive and negative, so it was wired at 8 ohms because each sub was wired at 4 ohms each, so now I wired it up like this

So what you're saying is, you were only using 1 coil before. Now you're using both coils on both subs. Wow.

 

[misfit138 5,000+ posts]

So what you're saying is, you were only using 1 coil before. Now you're using both coils on both subs. Wow.

Does this really surprise you, man.?

 

[Stalin-ohaulic]

Does this really surprise you, man.?

I probably shouldn't... LOL

 

[thedj 10+ year member]

So what you're saying is, you were only using 1 coil before. Now you're using both coils on both subs. Wow.

Yeah I guess, is it better to use both coils?

 

[RAM_Designs 5,000+ posts]

wow

 

[ciaonzo 5,000+ posts]

I just wanted to add another wow to this thread.

 

[thedj 10+ year member]

What's with all the wows can someone explain what's goin on?