12 in sub comparison

If I go from a 12in sub that handles 750w RMS to 2 12in subs that handle 400w RMS each, what do I gain/lose from this change? I cant seem to find a answer to this.


Thanks for any help

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Anyone can create SP it takes real skill to create SQ

DEH-P880PRS, CDT CL-51, CDT CL-69X, US Amps 300X, NAK PA-504, Treo SSI12.22

Well there are a few variables in this question. What amp are you running? What Type of box? And what model subs are they?

A general answer would be that you are losing power handling, which usually means a lower quality sub with a smaller voice coil. But, you are doubling the cone area, so you have the ability to move more air...It could go both ways....If you give us a bit more info we can give you a better estimate of gain/loss...

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'89 Mercedes-Benz 300E
Pioneer DEH-5900UB
(2)RE Audio SX 10"s
(1)US Amps MD3D
3ft^3 @ 37Hz

Blowing up in a car accident doesnt worry me, as long as I'm putting out some major dB's when I die...

Well....I have a Treo SSI currently in a ported box (built to treo's specs). I am not satisfied with the sound. I am thinking of getting a sealed dual 12 set up with 2 jl 12w6v2's with 1.25 cubes in each chamber. Or should I just try to get sealed box for the treo? I am looking for more SQ than SP. Although I do like the boom every once in awhile. BTW I have always had sealed boxes but decided to try a ported box on the recommendation of my install guy.

Thanks


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Anyone can create SP it takes real skill to create SQ

DEH-P880PRS, CDT CL-51, CDT CL-69X, US Amps 300X, NAK PA-504, Treo SSI12.22

Your output will likely be pretty close to the same, BUT I too, prefer the sealed enclosure. The JL will likely move just as much air as the Treo, but in the sealed enclosure, you will probably have better (FAR better) deep extension.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

haemphyst wrote:

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Your output will likely be pretty close to the same, BUT I too, prefer the sealed enclosure. The JL will likely move just as much air as the Treo, but in the sealed enclosure, you will probably have better (FAR better) deep extension.

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Thanks for the help... So I could just save money and get a single sealed box for the treo and it will sound like the 2 jls?

Thanks

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Anyone can create SP it takes real skill to create SQ

DEH-P880PRS, CDT CL-51, CDT CL-69X, US Amps 300X, NAK PA-504, Treo SSI12.22

No, if you move from a vented box, to a sealed box, you will LOSE 3dB, the same as adding an ADDITIONAL 12" in a seald box will GAIN you. That is why I said your output would likely be the same.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

haemphyst wrote:

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No, if you move from a vented box, to a sealed box, you will LOSE 3dB, the same as adding an ADDITIONAL 12" in a seald box will GAIN you. That is why I said your output would likely be the same.

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How much is 3db?....Is it something that would make a real audible difference. I know that doubling your power only yields a 3DB gain. So is it just more economical to keep my sub and get a sealed box, or go with throw it out the window and get a dual sealed set up? If 3db doesn’t make that much of a difference, then I think I should just stick with my treo and not spend more money on 2 jl's and a new box.

Thanks for all of your insight

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Anyone can create SP it takes real skill to create SQ

DEH-P880PRS, CDT CL-51, CDT CL-69X, US Amps 300X, NAK PA-504, Treo SSI12.22

He said your output would most likely be the same...but your sound quality will be better...which is what you said you wanted, sound quality