Fi 18" BTL N2 looks different than my other N2 18"

[reelfish92 54]

Just got the new Fi BTL n2 18", opened it up, its a 18" and its an N2 I know, but looking at my old one which I got in March 2011, this one only has 3 circular holes for "cooling". My old one has 12 square openings for the cooling. The basket is also a bit different I believe, Can somebody help me out? Im just wondering if this BTL n2 has cooling or not. Thank you. Here are pictures. My invoice # is: I-16460/00. (Mark Jenkins St.pete, FL)

1 N218 00218 USD 479.00 USD 479.00

Ohm: dual 2

P_Chamfer: no

Cooling: yes +$30

HiXmCoil: yes +$15

Daily_or_SPL: Daily

Universal: yes

Dustcap: white

-------------------------------------------------------------------------

Amount: USD 479.00

Shipping costs: USD 57.45

Total amount: USD 536.45

PHOTOS ARE BEING UPLOADED TO PHOTOBUCKET NOW, of the old one and of the new one.

[Julian 641]

I believe the basket may have changed to the TI style basket.

[reelfish92 54]

New BTL n2 I ordered.

http://s1223.photobucket.com/albums/dd513/reelfish92/?action=view&current=new2-1.jpg

http://s1223.photobucket.com/albums/dd513/reelfish92/?action=view&current=new3.jpg

Old Fi BTL N2 that was ordered in March.

http://s1223.photobucket.com/albums/dd513/reelfish92/?action=view&current=OLD-1.jpg

[reelfish92 54]

I believe the basket may have changed to the TI style basket.

The basket is nice, just the old basket has 12 cooling openings, the new one has only 3 openings. Not sure if thats all to the cooling option now..

[Julian 641]

Weird, i have no idea.

[altoncustomtech 773]

Didn't Nick or Scot say somewhere that they changed to a US supplier for the baskets as well as the rest of the steel.

[reelfish92 54]

Didn't Nick or Scot say somewhere that they changed to a US supplier for the baskets as well as the rest of the steel.

I believe so, but I was asking about the Cooling, it looks way different, maybe the new design works with less openings, but 3 openings versus the 12 on the other N2 I have seems like a big difference, and I wanted to make sure it had cooling before I hook it up in the morning. Anybody want to chime in =]

(I didn't want to email them either because this seems better with all the members being able to answer)

Thank you

[altoncustomtech 773]

This is what Fi writes as the description of the cooling option copied and pasted directly from the website:

Cooling: Self explanatory, the cooling channels are machined into the inside of the sub to help cool the coil FAR better. But there are some things that you sacrifice. There is less metal inside of the motor so it is a little weaker. If you are looking for a tone/burp only scenario for SPL we suggest that you do NOT get this option. Stick with only the P chamfer. Now if you are looking for a daily sub to beat on and you have 2000+ watts the BTL series is for you.


It has to do with channels that are machined into the coil gap in the motor itself. I don't believe the cooling option has anything to do with the basket at all.

[NB50 206]

The cooling option is machined into the motor not the basket. Those are just venting holes and judging by the size on the new one three should be more then enough.

[reelfish92 54]

Thank you! I wanted to make sure, I ordered it on 6-13 and I know these beasts are worth the wait! Just did not want to put it in without knowing for sure =)

The cooling option is machined into the motor not the basket. Those are just venting holes and judging by the size on the new one three should be more then enough.

Thankyou bromo, I should never doubt them, best woofer I have heard, and yes I have heard systems other than mine running Fi, one that does 156 db. The SSAs that Punisher Geo runs are nice too ,off topic haha

[altoncustomtech 773]

Thank you! I wanted to make sure, I ordered it on 6-13 and I know these beasts are worth the wait! Just did not want to put it in without knowing for sure =)

The cooling option is machined into the motor not the basket. Those are just venting holes and judging by the size on the new one three should be more then enough.

Thankyou bromo, I should never doubt them, best woofer I have heard, and yes I have heard systems other than mine running Fi, one that does 156 db. The SSAs that Punisher Geo runs are nice too ,off topic haha

What? I answered first on post #8 one minute before Bromo, what about my thank you???

LOL, Jus Kiddin' Guarantee he's smarter than me...

Glad you feel more comfortable with it, now get some vids posted of them monsters tearin' something up!!!

[reelfish92 54]

I did over his quote is your thank you I ain't skimpin on the thanks ALTON!!!!!

[altoncustomtech 773]

:lol2:

[altoncustomtech 773]

Here's a picture of the BP power cooling option, it's only 6 channels instead of the 12 your BTL has, but it gives a great visual of the difference between a motor with and without the cooling options.

[reelfish92 54]

Very nice, where did you find those pictures?

[altoncustomtech 773]

They're on the forum here somewhere. Nick or Scott posted them up awhile back. I saved them to my laptop for showing to local guys, but they're on here somewhere, maybe in the Fi technical section.

[reelfish92 54]

They're on the forum here somewhere. Nick or Scott posted them up awhile back. I saved them to my laptop for showing to local guys, but they're on here somewhere, maybe in the Fi technical section.

Okay thanks for the help, I will go find them

[altoncustomtech 773]

Well they were, I swear they were. I think someone like Nick may have gone through and deleted some of their old posts or something. I know he had a thread on here somewhere that he explained a good and fairly quick way to find the definite tuning of an enclosure and set the SSF accordingly I mentioned to someone in another thread but I couldn't find that either.

That or Searching > me today for some reason.

I'll post up all the pics of the BP option they had posted up at one time, they're all good pics.

[altoncustomtech 773]

Here's the entire bunch:

[NDMstang65 403]

American basket vs. Chinese basket.

The cooling technology is the same inside of the motor..

If you sit down and do the math you'll figure out that the surface area of the 12 small holes vs the 3 larger holes is actually within a gnats ass of each other..

New basket only has 3 holes...that's all it needs to vent around the top plate.

[reelfish92 54]

American basket vs. Chinese basket.

The cooling technology is the same inside of the motor..

If you sit down and do the math you'll figure out that the surface area of the 12 small holes vs the 3 larger holes is actually within a gnats ass of each other..

New basket only has 3 holes...that's all it needs to vent around the top plate.

Perfect, may I add that the American made basket feels nicer

[reelfish92 54]

WOOH Its nice to be able to bump again Fi FTMFW!

[ford302redneck 15]

I would assume the new ones are also stronger even though it was rare for them to break.