2 or 1?

[Psyence 10+ year member]

What is the loudness difference between 1 10 or 12" sub, and 2?

Is it louder to have 1 sub on 1000W or 2 on 500 each!?

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[Psyence 10+ year member]

Anyone?

 

[skadude016 5,000+ posts]

cone area.

in theroy 2 would b louder

 

[johnson 10+ year member]

It will be 2 inches louder.

2 subs off 500w will give you fuller sound as compared to 1 with twice the power.

 

[skadude016 5,000+ posts]

It will be 2 inches louder.
2 subs off 500w will give you fuller sound as compared to 1 with twice the power.

fuller?

 

[squeak9798 5,000+ posts]

Theoretical increase is 3db if you double cone area without changing power.

Theoretical increase of 6db if you double cone area and double power.

 

[lilmaniac2 5,000+ posts]

but most of the time that theory doesnt hold up in a car.... cancelation, box size, etc

 

[Psyence 10+ year member]

So the answer is... It will be almost 2x (3db) louder with 2 subs on the same amp as opposed to 1 on the same amp?

 

[johnson 10+ year member]

2 > 1 but wont be as loud on the same amp.

 

[squeak9798 5,000+ posts]

So the answer is... It will be almost 2x (3db) louder with 2 subs on the same amp as opposed to 1 on the same amp?

It won't *sound* two times louder...it takes 6db to 10db to be perceived as "twice as loud" by the human ear.

And, as I and lilmaniac pointed out.....those are only theoretical numbers. Real world results will depends on many, many, many different variables.

And even then...."on the same amp" is a little limiting, since most amps will not produce the same power output into multiple loads (PG Xenon and JL Audio Slash amps will, however). Say you, for example, have a single DVC 4ohm/coil sub wired in parallel to 2ohm, and an amp that's only stable down to 2ohms. Well, if that amp puts out 500w @ 2ohm and 250w @ 4ohm, then that single DVC 4ohm speaker wired to 2ohm will be recieving 500w. Now, add a second DVC 4ohm/coil speaker and you're only option is to wire the subwoofers to 4ohm (while still presenting a "safe" load to the amplifier), where the pair will only receive 250w....or 125w each.

It is correctly stated as two subs off of the same power will yield a theoretical 3db increase in output. Not off the same amp, but the same power.

 

[Psyence 10+ year member]

Well I agree with you 100%, but I do not own the subs yet, so I can choose which impedance they are to fit the application.

Its a Alpine MRD-M1005

1000W @ 2ohm into 1 Channel

On 2 Subs, Id get 2 2ohm DVC's, and on 1 sub, id get 1 DVC 4ohm.

Therefor the power is the same...

So I suppose im better off with 2 subs, instead of 1 off the same power, so thats what I should be doing.