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Ill post it here as well as get a specific N2 vs SP4 thread going. Already emails about it...lol

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).

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.

Looks awesome.

NICE, man i want one

Wow...it can go in a sealed box too!! That will be interesting to hear

Looks like a beast...

Guys - be ready for this vs that threads lol. N2 and SP4

HOLY SHYT!!! :fing34:

2.5 k in a sealed box...gd lord

Hey Nick, I sent you two emails asking a few questions if you can get back to me. You have my anxiety building!

Ill post it here as well as get a specific N2 vs SP4 thread going. Already emails about it...lol

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).

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.

SP4 going to be built available at any other sizes? just curious.

12" is being finished up. We were going to release the line with 12-18 at the first of the year, but got tired of sitting on it waiting for 12" tooling to be finished so figured we would put it up on Black Friday. Might as well start moving 15s and 18s as they are bigger sellers for us than 12s.

Lol btl and zcon mixed?

Fi does it yet again

would love to build something with that driver .....

14k... Definitely not a mix of subs. There are really only so many magnets and combinations available to work with. This one only having a gasket, dustcap, and terminals in common with the first gen BTL series. Cone, coil, magnet, steel, fact that its 4", basket, spiders, leadwire .... not much in common

Unless you really work outside the box like with the N2, things can have similar appearances but be vastly different.

Lol I was jk. I know theres a lot of mechanical differences. I was just saying that cause magnets look the same lol

Double post ftl

Edited November 25, 201113 yr by 14K

12" is being finished up. We were going to release the line with 12-18 at the first of the year, but got tired of sitting on it waiting for 12" tooling to be finished so figured we would put it up on Black Friday. Might as well start moving 15s and 18s as they are bigger sellers for us than 12s.

Thank you...

Post some pics

So, what's 'SP4' stand for?

Nice ...