best SQL setup? 3 Assasin 12s? 2 Arsenal 12s? 1 IDMax?

[thadman 10+ year member]

I have nearly 1000 watts @ 1ohm (maybe lower, it will be coming from a DLS Ultimate A5 amplifier)

Which setup would be loudest? It will be strictly SQL (60% SQ/ 40% SPL)

3 Assasin 12s

2 Arsenal 12s

or 1 IDMax 12

Click to read more...

 

[takeabao 10+ year member]

Loudest? Probably the 2 Arsenals...

And IDMAX or Arc Flatline will pretty close...

 

[thadman 10+ year member]

Where could I acquire an Arc Flatline subwoofer brand new for $300?

What ohm load would 3 4ohm drivers wire down to?

Is it true that you gain roughly 6dB of output by adding an additional driver of the same driver and using the same power. Lets say if you owned 1 12 with 88dB efficieny and you fed it 1000 watts, if you added an additional driver and gave both 12s the same power (500 to each) would you have the same output with an addition of 6dB? If this is true, what are the possibilities for more than 2 drivers?

 

[qtipextra 5,000+ posts]

The only way to know for sure is to try it and see

[/thread]

 

[thadman 10+ year member]

...I do not have the funds, a dealer nearby, or any other resource to hear any of these systems. I am asking what should be theoretically louder with only 1000 watts?

The sale ends at the end of next week, I believe (each setup would cost roughly $300, 3 12s, 2 12s, or 1 12)

 

[96civ 10+ year member]

There's more surface area for the cones to move air so it could be plausible. I wouldn't know if it's a 6dB gain, but it might.

 

[thadman 10+ year member]

I believe they mentioned it in the Loudspeaker cookbook (Ive got the 6th edition), but im too lazy to look. Can anyone confirm this for me?

 

[vosschs 5,000+ posts]

Loudest? Probably the 2 Arsenals...
And IDMAX or Arc Flatline will pretty close...

you have no idea how they sound..... not to many doo......

 

[T3mpest 10+ year member]

no, you'd theoretically gain around 3db. The formula used shows SPL as purely a function of displacement. Displacement (amount of air moved) is controlled by 2 main factors. The size of the driver that is moving, and the distance it moves. If you double any of these factors you double displament, gaining 3db. If you were to add a second sub, you'd double your cone area. However, since you split the available power between the 2 amps, you lose excursion. Since the strength of the magnetic field is NOT directly porportional to the distance the cone moves, if you half the power you wont' half the distance (theoretically). You have 2x the area moving 70% the distance each, half power is a 30% drop off.

 

[thadman 10+ year member]

What is the equation for finding impendance?

if I had 2 DVC 4ohm subs would it be (4 x 4) / (4 + 4)

impendance X impendance divided by each of them added together?

 

[trow100 10+ year member]

Where could I acquire an Arc Flatline subwoofer brand new for $300?
What ohm load would 3 4ohm drivers wire down to?

Is it true that you gain roughly 6dB of output by adding an additional driver of the same driver and using the same power. Lets say if you owned 1 12 with 88dB efficieny and you fed it 1000 watts, if you added an additional driver and gave both 12s the same power (500 to each) would you have the same output with an addition of 6dB? If this is true, what are the possibilities for more than 2 drivers?

your correct in some ways but not fully. to theoretically get a 6db gain you have to have that woofer of off a 1000 watts and add another with a 1000 watts. they way you described is only a 3 db gain. but this is all install depended and a lot of other factors. you have to doudlbe surface area and power to get 6db's. and http://www.sounddomain.com/shop/wooferwizard.pl?num_of_subs=2&impedance_of_subs=4ohm_dvc&x=103&y=5

use that for wiring purposes

 

[takeabao 10+ year member]

you have no idea how they sound..... not to many doo......

Hence that's why I said "probably".