Garage
Shop

See all parts that fit your 2024 Ranger

Infinity 8" Dual 2 ohm Flex Woofer - Flex 8D

600W Max (150W RMS) 8" 2 ohm Dual Voice Coil Adjustable Depth Subwoofer for Factory Location Upgrade

JBL
Shop all JBL
highlight-star-icon

• 600W Max
• 150W RMS
• Polypropylene Cone
• Large Roll Rubber Surround
• Adjustable Height
• Mounts in Factory Locations
• Keeps Factory Look in Vehicles

Learn more about the refflex8d

We apologize

This item has been discontinued


Loading...
CP1-S main

PAC CP1-S

CAN-Bus Interface Module for select 2015-2024 vehicles from Ford, Tesla

-30.20%

$104.00

List price $149.00

AXLOC-FD2 main

Axxess AXLOC-FD2

2-Channel 110W Line Output Converter with Gain Controller for select 2011-2025 vehicles from Ford with Non-Amplified Systems

3
-10.48%

$93.99

List price $104.99

CP1-FRD2 main

PAC CP1-FRD2

CAN-Bus Plug-and-Play Harness for 24-pin Connector at OBD2 Gateway Module in select 2014-2024 vehicles from Ford

-34.18%

$52.00

List price $79.00

AP4-FD31 main

PAC AP4-FD31

AmpPRO Series Amplifier Integration Interface for select 2018-2024 vehicles from Ford

-12.75%

$479.00

List price $549.00

SB-F-RNGSCG4/10TW1 main

JL Audio Stealthbox® SB-F-RNGSCG4/10TW1

Custom-Fit Loaded 10" Subwoofer Enclosure for select 2019-2025 Ranger

$1,149.99

XBAF65 main

NVX XBAF65

Universal 6.5" Waterproof Silicone Rubber Speaker Baffle Ring Kit (Pack of 2)

114
-37.15%

$21.99

List price $34.99

Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

OEMADAPT6.5 main

DS18 OEMADAPT6.5

Universal 6.5" Speaker Mounting Adapters

C2-350X main

JL Audio C2-350x

50W RMS 3.5” C2 Series 2 Way Coaxial 4-ohm Car Speakers

15

Description


JBL brand icon

Authorized dealer



General Features:

  • 8" Dual 2 ohm FLEX Series Subwoofer
  • Power Handling:
    • Peak: 600 watts
    • RMS: 150 watts
  • Built for installing an upgraded subwoofer in your vehicle's factory location
  • Polypropylene cone
  • Large roll rubber surround
  • Adjustable height: Proprietary sliding flange helps ensure factory look when installing
  • Flange snaps in place
  • Spring-loaded terminals
  • 1-9/16" dual voice coil
  • Top-mount depth: 2.5"
  • Cutout diameter: 7-9/16"
  • Frequency Response: 25 - 500Hz
  • Sensitivity: 84dB
  • Resonance Frequency (Fs): 40.8
  • Also Available as a Single 2 Ohm Model: Infinity Reference-Flex8
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • Priced Individually

Check out the Flex 8D Owner's Manual

PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Infinity 8" Dual 2 ohm Flex Woofer - Flex 8D Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Infinity 8" Dual 2 ohm Flex Woofer - Flex 8D Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Infinity 8" Dual 2 ohm Flex Woofer - Flex 8D Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Infinity 8" Dual 2 ohm Flex Woofer - Flex 8D Subwoofers

2 Channel Amp

4 Channel Amp


Loading...
SB-F-RNGSCG4/10TW1 main

JL Audio Stealthbox® SB-F-RNGSCG4/10TW1

Custom-Fit Loaded 10" Subwoofer Enclosure for select 2019-2025 Ranger

$1,149.99

BV850ACP main

Boss Elite BV850ACP

6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera

5
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

Limited time!
46CSC6934 main

Kicker CSC693 (46CSC6934)

900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers

40
-30.02%

$111.96

List price $159.99

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

2
-16.67%

$349.99

List price $420.00

iLX-W650 main

Alpine iLX-W650

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

123
-5.72%

$329.95

List price $349.95

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

DMH-W4660NEX main

Pioneer DMH-W4660NEX

6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)

2
-20.00%

$599.99

List price $750.00

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99


Best selling similar products

VCW82v3 small

NVX VCW82 Version 3 (VCW82v3)

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

(12)

$169.99

List price $203.99

47KBRW8 small

Kicker 47KBRW8 ReFLEX™

• 8" ReFLEX™ Passive Radiator
• Rubber covered plastic Cone
• Rubber Surround

(1)

$49.99

List price $59.99

DB-SA2508 D1 small

Deaf Bonce Apocalypse DB-SA2508 D1

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 1 ohm
• Mount depth: 5.22"
• Sensitivity: 84.7 dB

(1)

$229.90

List price $229.90

VCW84v3 small

NVX VCW84 Version 3 (VCW84v3)

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

(15)

$169.99

List price $203.99

8W3V3-4 small

JL Audio 8W3V3-4

• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 4.63"
• Sensitivity: 83.24 dB

(45)

$349.99

List price $349.99

L7S82 small

Kicker L7S82 (44L7S82)

• Peak Power: 900 watts
• RMS Power: 450 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-3/4"
• Sensitivity: 82.37 dB

(1)

$175.96

List price $239.99

SPK-8S4 small

AudioControl SPK-8S4

• RMS Power: 500 watts
• Impedance: Single 4 ohm
• Paper Fiber with Mica Coating Cone
• Rubber Surround
• Mount depth: 4.291"
• Sensitivity: 81.9876 dB

(1)

$179.00

List price $229.00

KAPPA 83WDSSI small

Infinity Kappa 83WDSSI (INFSUBKA83WDSSIAM)

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Single 2 or 4 ohm
• Glass Fiber Cone
• Rubber Surround
• Mount depth: 5.42"
• Sensitivity: 91 dB

(2)

$149.95

List price $289.95

8W1v3-4 small

JL Audio 8W1v3-4


• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 3.86"
• Sensitivity: 84.8 dB

(10)

$199.99

List price $199.99

CWRT84 small

Kicker CWRT84 (48CWRT84)

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 2-11/16"
• Sensitivity: 81.8 dB

(4)

$151.96

List price $209.99

Specifications & Details


Subwoofer Specifications
Series
REF-FLEX
Subwoofer Size
8"
Peak Power Handling
600 watts
RMS Power Handling
150 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
2 ohm
Frequency Response
25 - 500 Hz
Sensitivity
84 dB
Xmax (millimeters)
3.1 mm
Subwoofer Design
Round / Circle
Main Cone Color
Dark Gray
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Subwoofer Grille
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Sealed
Optimum Sealed Box Volume
.93 cubic feet
Optimum Ported Box Volume
.9 cubic feet
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
40.8 Hz
Equivalent Compliance (Vas)
12.228 liters
Total Speaker Q Value (Qts)
1.363
Electrical Q Value (Qes)
1.704
Electrical Resistance of Voice Coil (Re)
1.89 ohm
Mechanical Q Value (Qms)
6.794
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

JBL

Model Number:

REF-FLEX8D

Weight:

8.00lbs

Internal SKU:

refflex8d

Internal Product ID:

143595

Customer Ratings & Reviews


Infinity 8

5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


AXDIS-HK4 small

Axxess AXDIS-HK4 Wiring Interface

Install a New Car Stereo, Retain Steering Wheel Controls, Backup Camera, Amplifier, and Other Factory Features in select 2010-2013 Sorento and Tucson

$235.99

List price $262.99

TB-MJ2065 small

Omaha Tools TB-MJ2065

18-1/2" 3 pc Tool Box Set

$24.99

List price $39.99

M6-650SGI-S-An small

JL Audio M6-650SGI-S-An

Sport Grille Insert for JL Audio 6.5" M6 Marine Speakers (Anthracite)

$34.99

List price $34.99

AVIC-X930BT small

Pioneer AVIC-X930BT

6.1" In-Dash Double DIN Touchscreen with CD/DVD/MP3 Receiver, Built-in Navigation, Bluetooth and SD/USB Inputs

(24)

$699.99

List price $1000.00

HED3600.4 small

Cerwin-Vega HED3600.4

600W 4-Channel HED3 Series Class AB Car Power Amplifier

$89.99

List price $209.99

SHW512G250 small

Stinger SHW512G250

250 Ft. 12 Gauge Pro Series 100% Oxygen Free Copper Speaker Wire (Gray)

$476.00

List price $729.00

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2024 Ford Ranger

1987 Volkswagen Scirocco

1981 Dodge St Regis

2003 Ford Escape

2005 Audi S4

1987 Toyota MR2

2012 BMW 650i

1980 Ford Pinto

2000 Infiniti G20

1983 Subaru DL

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.