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18 fi btl subwoofer for sale for sale on US's largest classifieds sites (7 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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$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

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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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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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$400.00

Fi Audio Btl 18 subwoofer - $400 (Marshall) hide this posting restore this posting

Used Fi Audio Btl 18 subwoofer - $400 (Marshall) hide this posting restore this posting in MARSHALL, MN, USA
7 months ago
MARSHALL,MN
Fi Audio Btl 18 subwoofer - $400 (Marshall) hide this posting restore this posting

Used, in great condition, never overpowered. These woofers are not easy to come by and cost a pretty penny Im letting mine go to re-install my 2 12s. Its a dual 2 ohm spl, 2000 watt RMS, 4000 watt max handle at 1 ohm. Box is ported and was built to spec 6.5 cubic feet ran at 35 Hz. Asking $400 for woo...

$400.00

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