FI BTL N2 18 or FI SP4 18

[KHRISS]

i have 1 rockford fosgate t2500 i will be getting a second one just wanted to know which sub would be better for me the FI BTL N2 18 or FI SP4 18?

[irpirate]

lol. literally right below your post.

http://www.stevemeadedesigns.com/board/topic/126506-fi-btl-n2-or-sp4-whats-the-diference/

[KHRISS]

lol but can you help me

[KHRISS]

yes but that guy is going to run 2 different amps and god knows what sub size

[irpirate]

lemme guess. you want low, loud, sounds good daily cargo of your jeep? lol

with that much power daily i'd say sp4 would be better.

but it depends on what you want/what you're building for.

[KHRISS]

daily and some competition bass race

[LoudBimmer]

SP4 Heavier

SP4 More mounting depth

SP4 4" coil vs 3" on N2

SP4 10" spider and higher mechanical linearity than N2

SP4 More long term thermal stability

SP4 Sealed capable vs N2 ported only

N2 More motor force

N2 Inductance ring that balances the inductance swing better

SP4 Slightly lower overall inductance than N2

N2 Well... its cool because its Neo

N2 It's expensive because its Neo (and constantly increasing in cost)

SP4 Slightly higher Xmax (coil limited)

SP4 Lower FS for those that think it matters

In general we created the N2 as the replacement for the older generation BTLs. We have seen the direction people are going with the BTLs and arranged the N2 specs to be closer to intended applications (huge, deep hitting, daily setups). Then creating the N3 to fill the void for the high motor force applications like extreme SPL or simply those that like that "sound".

The SP4 pushes things a little further in the daily driver direction. While the N2s have proven to work well in 4th orders, they simply don't in sealed. The SP4 does just that, and a little better than the N2 in 4ths. It still works great in ported, with the ability to have a heavier peak down low as well.

In testing it is a very solid sub that can take quite a bit of abuse. While not needed (none of the original test drivers we built had it) we do have the option for spaced spiders (2 on the top and 3 on the bottom) with a 1" ring between. In this configuration we have hand sewn on leads in between the spiders. In its standard configuration with 5 spiders and the gapped cone, it is a very stable platform (not a triple jointed sub. The cone is spaced about 1.125" from the top of the spiders. This stabilizes the coil better than the standard triple joint and is what we are doing on the standard versions of the SSD, Q, and BL drivers now).

So which is better? I dont know...lol If you need every bit of weight savings you can find, then the N2. If you are tech oriented and have to have innovation, then the N2. If you need an even more abuse tolerant speaker then the SP4 is for you. If you want big, SP4. Sealed, SP4. Even more thermal stability, SP4. They each have their merits. Choosing the "better" driver is up to your application.

I think the SP4 is in keeping with the times and applications people are heading towards. High excursion, stability, and thermal power handling... albeit at a cost of weight and depth over the N2 series.

[KHRISS]

so that sounds like SP4 then?

[n8ball2013]

no vs or comparisons threads.