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RARE Fi BL 18 NEW BUILD


severancej
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Has anyone ever had or know anything about an Fi BL18 with a 4 inch coil? 

 

Has 5 layer spider and what looks to be a flatwind coil

 

3 days ago I bought this one for 20 dollars! and am looking to recone it.

But fi only has stock recones which should be 3 inch.

Yesterday I impulse bought a recone for a BL 18 v2 d2 lol

Then I cut the sub open and got to looking more and realized wtf I have a 4 inch coil!

So I got with Fi, and they are helping me.

But so far they have only said it's a rare sub.FB_IMG_1664069644080.thumb.jpg.37f31d96b2c735e7d48150a32138c08c.jpgFB_IMG_1664069653852.thumb.jpg.58c02ef5d8bb45b1fe897b3f25d05f9d.jpgFB_IMG_1664069661379.thumb.jpg.d7a4c0da5aa393bb5bd30f62cfabdd71.jpg20220926_080254.thumb.jpg.bf5cc57b84705d3b4323f23893d410de.jpg20220926_080307.thumb.jpg.19bce99ebec439d5c1b1f0709fb3725f.jpg20220926_080327.thumb.jpg.ef438f20dba45a94effcc24674c33407.jpg20220926_080338.thumb.jpg.a15afd18913b6c02899f03e99aa2113d.jpgreceived_1547992962299216.thumb.jpeg.e14f36eea57b28f5ffda2e8390f3c9cd.jpeg20220927_144217.thumb.jpg.c80a72f1e436f0c31cb4ad8f9cb80510.jpg20220927_144126.thumb.jpg.9b8a2b32931f749f8af945434c04af58.jpg

98' dodge ram

140A alt

Big 3

XS D2700

JVC kd-r310

Rockford T500-1BDCP

2 Sundown E12 Ported 4cubes 35hz

Rockford P400-4

2 Infinity reference 3way 6x9

2 Polk DB 5 1/4

2x layer dynamat all doors

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Thank you!

I am super stoked to revive this thing, the guy here had it in a plywood box and the condition of it speaks volumes to the amount of care shown to this BAMF. They literally had no idea what they had.

The paint is rustoleum gloss protective enamel.

I thought it was to much orange so I polished it instead. 20220928_151809.thumb.jpg.5c40b349ac974e2a798183271db9b706.jpg20220928_151949.thumb.jpg.448e17fa88e88d8f489ac6d1331fee9e.jpg

98' dodge ram

140A alt

Big 3

XS D2700

JVC kd-r310

Rockford T500-1BDCP

2 Sundown E12 Ported 4cubes 35hz

Rockford P400-4

2 Infinity reference 3way 6x9

2 Polk DB 5 1/4

2x layer dynamat all doors

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Share on other sites

I loved the old BL's, and the UFO's. I remember Scott having a option for a 4" coil for the OG BL. That is pretty rad you found one in the wild, and REAL rad, you are putting it to use. Makes me wonder if a SP4 recone kit would fit in it. May be to tall, but, it may work great. If anything, call Fi, talk to Atwell (Scott) or someone over there, and at least tell them what you have, and what could be done with it these days. And when you do, write everything down, and come back here, and post what was talked about. Id love to hear that. Best of luck. What a fun find. 

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Hell yeah thank you KB I've seen you here forever. 

 

I went on Fb bassheads on budget but didn't know who to trust for a recone so i impulse went to Fi website and bought a recone for a BL and within like 6 hours I realized that coil wasn't no 3 inch and got to looking and thought oh shit 😆 I have to get with them immediately.

I tried to call Fi just cause id rather do that but the number didn't work. I got them on FB messenger immediately.

Idk who I got on the other end but they asked for my order# and pics and said "it is a BL with a 4inch coil very rare sub"

I told them I'm on standby if they need any measurements or anything but no word yet. I Def don't want to bother them so I'm just on standby to wait my turn.

 

Screenshot_20220929-215728_Messenger.thumb.jpg.ad54dbd8f6388fc2168869fcfdecfa18.jpg

 

Edited by severancej

98' dodge ram

140A alt

Big 3

XS D2700

JVC kd-r310

Rockford T500-1BDCP

2 Sundown E12 Ported 4cubes 35hz

Rockford P400-4

2 Infinity reference 3way 6x9

2 Polk DB 5 1/4

2x layer dynamat all doors

Link to comment
Share on other sites

  • 3 months later...

I got my Fi custom 4inch BL18 recone kit in and installed!!!

The new coil looks so much better than the old. The old coil was hanging way out of the top of the motor gap at rest.

The new one is centered nicely in the motor. 

The spider pack looks awesome!

My first time using CA glue sucked but hey got to start somewhere. 

 

***Looking for input here or advice on how to push this thing to the limits. Strictly basslines centered around 30 hz

 

I have no TS parameters yall but hypothetically...

Imagine this style enclosure In a suburban with the sub facing up and port along bottom facing towards rear hatch is what I think I'm going to do.  Attached is a rough draft of my idea. Obviously I'll double baffle but otherwise does the port area and stuff look good? 

 

Screenshot_20230113_134757_Chrome.thumb.jpg.a937e1b98f02d6ab559926ed82d034f5.jpg20230108_162435.thumb.jpg.077235ca6b9f2ca19254a866576d07b9.jpg20230108_162452.thumb.jpg.7314141ab6230a644bd39b338b09f4d8.jpg20230108_162605.thumb.jpg.2431474835ed452a8f363a7a5eb12624.jpg20230108_162707.thumb.jpg.fb4d0b372b4fd7e076d02f5f399c1ad4.jpg20230108_162716.thumb.jpg.56aeddfefc39fc90bd45f7ed484f99a6.jpg

 

98' dodge ram

140A alt

Big 3

XS D2700

JVC kd-r310

Rockford T500-1BDCP

2 Sundown E12 Ported 4cubes 35hz

Rockford P400-4

2 Infinity reference 3way 6x9

2 Polk DB 5 1/4

2x layer dynamat all doors

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Share on other sites

Fi had this cutsheet for the stock BL18. A lot of cut sheets are available for the old drivers on the SSA forum under the Fi section! 

I pretty much just used this design and tweaked the layout for sub up port back and to only use 1 common wall for the port.

Thoughts? 

 

The reason I used 7.0 cubes instead of 7.6 is because I'm going to invert my driver

 

Screenshot_20230108_095332_Messenger.thumb.jpg.808864f4801bb2fbfa47c375fc6680d7.jpgScreenshot_20230113_134757_Chrome.thumb.jpg.9be091d3bdb77bd1ca56d47e1800a66d.jpg

 

Edited by severancej
Add info

98' dodge ram

140A alt

Big 3

XS D2700

JVC kd-r310

Rockford T500-1BDCP

2 Sundown E12 Ported 4cubes 35hz

Rockford P400-4

2 Infinity reference 3way 6x9

2 Polk DB 5 1/4

2x layer dynamat all doors

Link to comment
Share on other sites

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