4 OHM VS 8 OHM Sub?
Thread Starter
Burning Brakes
Joined: Jan 2006
Posts: 859
Likes: 8
4 OHM VS 8 OHM Sub?
Well I've decided to go with the JW 10W1V2 sub for my Z06. This model comes in both a 4 ohm and 8 ohm version. Initially I had planned on going with the 4 OHM version, but I have an opportunity to get a really good deal on the 8 OHM one. What will the main difference be between the 8 ohm and 4 ohm version, and which one would be preferred? The AMP is a PDX 4.150 which I will be bridging two channels of, sending 300 watts RMS to the Sub. Both versions of the 10W1V2 are rated at 300 watts rms. Any advice would be appreciated!
Pro
Joined: Jun 2008
Posts: 505
Likes: 6
From: Dover De
get another 8 ohm sub and wire in paral. to get a 4 ohm load.
With the sub you have and the the PDX if you bridge it it will be 150x1@8ohm. or 300x1@4. so with the sub you will only have half the power because its 8ohms.
My $.02 would be either sell it or get another 8ohm and wire all the +'s together and all the -'s together to get a 4 ohm load.
With the sub you have and the the PDX if you bridge it it will be 150x1@8ohm. or 300x1@4. so with the sub you will only have half the power because its 8ohms.
My $.02 would be either sell it or get another 8ohm and wire all the +'s together and all the -'s together to get a 4 ohm load.
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
I've seen specs for lots of class D amps (like the PDX) that show the same ratings for 2 ohms as 4 ohms. Maybe 8 ohms is the same also, but I doubt it. Try contacting Alpine to see what they say, or just spend a few bucks more and get the 4 ohm sub 
Former Vendor
Joined: Oct 2007
Posts: 2,713
Likes: 9
From: Morgan Utah
There are far better sounding subs for the money, I have shipped replacements for those and the W3 and everyone loved the improvement.
I am not a fan of D class amps, I use a tiny G class that sounds much better.
If interested give me a call tomorrow, I know how to save some real money on this stuff as well
Rick
I am not a fan of D class amps, I use a tiny G class that sounds much better.
If interested give me a call tomorrow, I know how to save some real money on this stuff as well
Rick
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Former Vendor
Joined: Oct 2007
Posts: 2,713
Likes: 9
From: Morgan Utah
I never can seem to remember the exact technical reasons but it is not a huge difference in out put going with a higher impedance speaker, less current draw on the amp, etc....
We all like numbers, WHP, etc....to the point even diesel guys talk about HP when torque is what makes them so cool......
Voice coils are smaller, less weight, faster response.....
Watts are not everything though I love plenty in my systems but for reasons different than might seem apparent, DYNAMICS, mainly
Rick
We all like numbers, WHP, etc....to the point even diesel guys talk about HP when torque is what makes them so cool......
Voice coils are smaller, less weight, faster response.....
Watts are not everything though I love plenty in my systems but for reasons different than might seem apparent, DYNAMICS, mainly
Rick
