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Fi btl 18 for sale for sale on US's largest classifieds sites (23 results)

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18 Fi BTL N2 subwoofer. - $350 (Chalmette)

Used 18 Fi BTL N2 subwoofer. - $350 (Chalmette) in NEW ORLEANS, LA, USA
7 months ago
NEW ORLEANS,LA
18 Fi BTL N2 subwoofer. - $350 (Chalmette)

I have 1 18 Fi BTL N2 Dual 2 ohm subwoofer for sale. Used it for about 3 months. Nothing wrong with it just going to something smaller. Text or Call Kenny 985-290-5968 Location Chalmette

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$1.00

Fi BTL 18 - $1 (Reliant )

Used Fi BTL 18 - $1 (Reliant ) in HOUSTON, TX, USA
7 months ago
HOUSTON,TX
 Fi BTL 18 - $1 (Reliant )

Fully built 18 in fi btl with box built to spec and tuned at 30hz. Give your best offer. NO LOWBALLERS OR PENNY PUSHERS Amp can be added for the right price. SYSTEM IS STILL IN CARAmp is a 4000 watt CEA certified MASSIVE mono d block only 4 months old TXT or Call 713-894-5852 please leave a message if...

$1.00

$700.00

18 inch Fi BTL 3,000 watt SUBWOOFER - $700 (Baton RougeLaffayette)

Used 18 inch Fi BTL 3,000 watt SUBWOOFER - $700 (Baton RougeLaffayette) in BATON ROUGE, LA, USA
7 months ago
BATON ROUGE,LA
 18 inch Fi BTL 3,000 watt SUBWOOFER - $700 (Baton RougeLaffayette)

This is a freshly rebuilt FI Audio 18 inch BTL 3stack series subwoofer. Hand made in U.S.A Weighing it at 85 pounds, this subwoofer is engineered to handle 3,000 watts of continuous power. It comes with a custom box which is 7 cubic feet tuned 32 hz. Since it has been rebuilt Ive only given it 1,000...

$700.00

$375.00

Fi BTL N2 18 - $375 (Zachary,Louisiana)

Used Fi BTL N2 18 - $375 (Zachary,Louisiana) in BATON ROUGE, LA, USA
7 months ago
BATON ROUGE,LA
 Fi BTL N2 18 - $375 (Zachary,Louisiana)

Fi BTL 18.Great condition,and is fully broken in.3752253016281 Location Zachary,Louisiana

$375.00

$375.00

FI BTL 18 - $375 (Zachary,Louisiana)

Used FI BTL 18 - $375 (Zachary,Louisiana) in BATON ROUGE, LA, USA
7 months ago
BATON ROUGE,LA
 FI BTL 18 - $375 (Zachary,Louisiana)

FI BTL 18 in great condition.Selling because I have nowhere to put it.2253016281 Location Zachary,Louisiana

$375.00

$400.00

18 fi btl 2500w sub - $400 (Baton Rouge )

Used 18 fi btl 2500w sub - $400 (Baton Rouge ) in BATON ROUGE, LA, USA
7 months ago
BATON ROUGE,LA
 18 fi btl 2500w sub - $400 (Baton Rouge )

I got this fi btl 18 sub about 4 months ago but got a new car 01 Lexus rx 300 and dont have time to hook it all up. I already sold the so its just the sub and box. Txt me at 225-329-5440 if interested. You can hook it up before you buy it or whatever. Its in great condition. Its dual 1 or 2 ohm compa...

$400.00

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Fi BTL 18 and Skar Audio SK-1500 lifier - $1000 (HammondNew Orleans)

Used Fi BTL 18 and Skar Audio SK-1500 lifier - $1000 (HammondNew Orleans) in BATON ROUGE, LA, USA
7 months ago
BATON ROUGE,LA
Fi BTL 18 and Skar Audio SK-1500 lifier - $1000 (HammondNew Orleans)

Barely broken in Fi BTL subwoofer powered by a Skar . RMS at 1 ohm says 1700 on the box. Skar is a very underground brand of car audio. Dont make the assumption that since it is not very known, that it isnt of high quality. This is very efficient and doesnt get hot at all. Pretty happy with this setu...

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Fi btl 18 or to - $320 (dearborn heights)

Used Fi btl 18 or to - $320 (dearborn heights) in DETROIT, MI, USA
7 months ago
DETROIT,MI
Fi btl 18 or to - $320 (dearborn heights)

Fi btl 18, ufo btl, guy had recone on it 4 mounts ago, the voice coil is great motor is great, just needs little glue on the sprider, other then that its fine, its not blown, voice coil not rubbing, i had it in my car it was sounding fine, had my tuned by 5k electronics and i asked him if it sounds o...

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Fi Btl 18 NO TRADES - $300 (garden city)

Used Fi Btl 18 NO TRADES - $300 (garden city) in DETROIT, MI, USA
7 months ago
DETROIT,MI
Fi Btl 18 NO TRADES - $300 (garden city)

SERIOUS INQUIRES ONLY NO TRADES fi btl 18inch sub works great no box included 734-255-9510 prefer text NO TRADESplease ignoreKicker Sony alpine kenwood sundown Memphis ma audio Rockford fosgate fi btl subwoofer 15inch 18inch 12inch 15 18 12 kicker alpine aq audioque re audio ma audio fi btl kenwood ro...

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Fi Btl 18 NO TRADES - $375 (garden city)

Used Fi Btl 18 NO TRADES - $375 (garden city) in DETROIT, MI, USA
7 months ago
DETROIT,MI
Fi Btl 18 NO TRADES - $375 (garden city)

SERIOUS INQUIRES ONLY NO TRADES fi btl 18inch sub works great comes with box that is tuned to 28hz 734-255-9510 prefer text NO TRADESplease ignoreKicker Sony alpine kenwood sundown Memphis ma audio Rockford fosgate fi btl subwoofer 15inch 18inch 12inch 15 18 12 kicker alpine aq audioque re audio ma au...

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FI BTL 18 - $450 (Eastpointe)

Used FI BTL 18 - $450 (Eastpointe) in DETROIT, MI, USA
7 months ago
DETROIT,MI
FI BTL 18 - $450 (Eastpointe)

Clean 18 fi btl sub still like new still stiff no damage to the sub my is barely pushing it now it cums with a bigg nice ported box no carpet box look good its a dual 2ohm sub wired with 8gauge wire call for more info Eric 313 758 9968 ...

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Fi Btl 18 - $450 (garden city)

Used Fi Btl 18 - $450 (garden city) in DETROIT, MI, USA
7 months ago
DETROIT,MI
Fi Btl 18 - $450 (garden city)

fi btl 18inch sub works great comes with box that is tuned to 28hz 7342559510 prefer text no tradesplease ignore Kicker Sony alpine kenwood sundown Memphis ma audio Rockford fosgate fi btl subwoofer 15inch 18inch 12inch 15 18 12 kicker alpine aq audioque re audio ma audio fi btl kenwood rockford jl au...

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Fi Btl 18 - $550 (garden city )

Used Fi Btl 18 - $550 (garden city ) in DETROIT, MI, USA
7 months ago
DETROIT,MI
Fi Btl 18 - $550 (garden city )

fi btl 18inch sub works great comes with box that is tuned to 28hz call or text 734-255-9510 prefer text no tradesplease ignore Kicker Sony alpine kenwood sundown Memphis ma audio Rockford fosgate fi btl subwoofer 15inch 18inch 12inch 15 18 12 kicker alpine aq audioque re audio ma audio fi btl kenwoo...

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Pioneer head unit Fi BTL n2 18 subwoofer - $400 (Grosse Pointe )

Used Pioneer head unit Fi BTL n2 18 subwoofer - $400 (Grosse Pointe ) in DETROIT, MI, USA
7 months ago
DETROIT,MI
Pioneer head unit Fi BTL n2 18 subwoofer - $400 (Grosse Pointe )

Fi btl n2 18box tuned to 32hz comes free if you want it- 400 Pioneer DEH-4200ub head unit stereo- 150Dynasty UPS high rate series deep cycle sealed battery- 700 gauge stinger fuse holder and 300A sound quest fusewiring comes with if wanted- 20 No tradesserious buyers only pleaseyou can text or call me...

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PSI reconed Fi BTL 18 subs - $1 (Fort Worth)

Used PSI reconed Fi BTL 18 subs - $1 (Fort Worth) in DALLAS, TX, USA
7 months ago
DALLAS,TX
PSI reconed Fi BTL 18 subs - $1 (Fort Worth)

800 FIRM, No Trades unless you have four DD 2515s. Selling two Fi BTL 18s with upgraded PSI recones. 2500watts RMS according to PSIRecone info- Triple Leads, Heavy Duty- Quad progressive spiders- Flat Wound Voice Coils- Dual 1.4 ohm each.Fi BTL info- 2010 model, Single 11.5in magnet- Fully Loaded per ...

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kicker zx 2500.1 fi btl n2 18 - $350 (mokena)

Used kicker zx 2500.1 fi btl n2 18 - $350 (mokena) in CHICAGO, IL, USA
7 months ago
CHICAGO,IL
 kicker zx 2500.1 fi btl n2 18 - $350 (mokena)

The sub is blown but they make a recone kit for about 150 sub retails about 600 The works and is in good condition about 700 retailWill sell seprate 300 and 100 for the sub 350 all together Location mokena

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Completion 18 FI Btl subwoofer - $675 (Griffith)

Used Completion 18 FI Btl subwoofer - $675 (Griffith) in CHICAGO, IL, USA
7 months ago
CHICAGO,IL
Completion 18 FI Btl subwoofer - $675 (Griffith)

Like title says,I have a FI BTL 18 subwoofer, if you know anything about LOUD car audio you know this is the best, of you doubt me look online,I paid 675 and Ill throw in a custom box Its too much for my car to handle well let you hear before you buy Dont try to low ball me your waisting your time 219...

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18 Fi BTL - MONSTER SUBWOOFER (South Shore)

Used 18 Fi BTL - MONSTER SUBWOOFER (South Shore) in BOSTON, MA, USA
7 months ago
BOSTON,MA
18 Fi BTL - MONSTER SUBWOOFER (South Shore)

This is not your average mainstream subwoofer. This is an 18 Fi BTL. It will take 2000w RMS with no problem. Its extremely loud and will shake your car and any cars around you. These are used in competitions and can do hair tricks and windshield flexing.Check out some 18 Fi BTL videos online, this is ...

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18 Fi BTL Subwoofer in Custom Ported Box - $600 (South Shore)

Used 18 Fi BTL Subwoofer in Custom Ported Box - $600 (South Shore) in BOSTON, MA, USA
7 months ago
BOSTON,MA
18 Fi BTL Subwoofer in Custom Ported Box - $600 (South Shore)

THIS SUBWOOFER DOES COME WITH A PORTED BOX, IT JUST ISNT IN THE PICTURESBy the way, it is next to a 12 sub in the pictures to show how big it is.This is not your average subwoofer. It is an 18 sub and it weighs 50 pounds. It is absolutely massive. Most people Ive shown it to cant believe how big it is...

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Fi Btl N2 18 (West Sacramento)

Used Fi Btl N2 18 (West Sacramento) in SACRAMENTO, CA, USA
7 months ago
SACRAMENTO,CA
Fi Btl N2 18 (West Sacramento)

Im selling my 18 Fi Btl N2 D1 2000 watts rms 4000 peak $400No trades for mor infotext show contact infoText Only Rockford Fosgate Fi Btl Mtx Sundown Audio Jl Audio Kicker DC Audio DD AA SMD Audioque Crescendo Audio Psi Audio Kinetik Xs Power

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