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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.

Too many people don't understand the concept of what a subsonic filter is..so we did a newer smaller diameter spider that mounts lower on the former and doesn't hit the tinsels and it still moves just as far. (the IB3 18 has been done like this for years and the people who run them are FAR more meticulous then the car audio crowd, they would be the first to complain if it were a problem with "lead slap") It simply works fine, personally I prefer the external leads because it leaves more room for 'oops' factor. Also, the cost on the lead carrying spiders has went up 4x in recent months..we ate it until we came up with a solid solution that we are happy with and works well.

Yep right in my face... I have always been told undo the + then the -.

ya if you read the manual it calls for 70mm power cable... which is closer to 3/0 gauge.... i will be using 4/0 cable all through out the car.... plus the amp will be sitting on the battery bank so the power and ground wire will be less than a foot long...

no.. all you have to do is go to the first page, of the topic.. go to the first post.. go to edit.. then FULL edit.. and then topic name. change poof ova.

Heres a look when your in front of me.. last pic was before i made the panels, and sprayed the front baffle.

got some pics of my 14k2d today

ya your dumb... look how your posts are getting negative rep LOL

huh, if you dont know what your talking about please dont post on my thread... anyways traded the 10k plus cash for a 14k2d .... very excited still gotta get a bunch more batteries and a lot more wire before i can run it though lol Lol nice post edit u dick head. You got very close to being banned here; I guess I assumed they banned you, but looks like u got lucky. I'm pretty sure there was another post...the one where I recommended that you put a mesh filter over the turbo. Something about there were also a mention of you bashing someone's build-log and changing names. Well now that you posted in my new build-log seems your off to another bad start. I will keep your post there and see how it goes.

huh, if you dont know what your talking about please dont post on my thread... anyways traded the 10k plus cash for a 14k2d .... very excited still gotta get a bunch more batteries and a lot more wire before i can run it though lol

I thought he was banned?

Yeap thx for that ass wipe. I wont buy any thing of a dodgy fkr like u.