About the Infinity REF-FLEX8
Bass that fits in your vehicle
Bass that fits in your vehicle
When you're looking to upgrade your vehicle's sound system, replacing your factory sub can be tricky — many new subs just won't fit in that location. Infinity's engineers created an ingenious solution to this problem with the Reference Flex Series which allows you to adjust the sub's mounting depth for a custom fit.
Flexible mounting
The FLEX8 8" sub features a patent-pending adjustable flange which lets you customize its mounting depth. You simply loosen the flange, then slide it down the motor structure until the sub fits in the opening (keep in mind that this raises your mounting height). This unique, innovative feature gives you far more flexibility when adapting the sub to the opening in your particular vehicle. Along with the flange, the speaker's low-profile design makes it easy to fit into your factory subwoofer opening for upgraded bass sound with minimum hassle.
And the sub's rugged polypropylene cone and rubber surround give the REF-FLEX8 the stiffness to punch out deep bass notes while minimizing distortion. This sub will work well with most factory amplifiers, but will deliver even more impressive performance with an aftermarket amp.
Product highlights:
- 8" dual 2-ohm voice coil subwoofer
- movable flange allows adjustment of speaker mounting depth
- polypropylene cone with rubber surround
- grille not included
- handles up to 150 watts RMS
- peak power handling: 600 watts
- frequency response: 25-500 Hz
- sensitivity: 84 dB
- maximum top mount depth: 2-1/2"
- warranty: 1 year
- MFR # REF-FLEX8D
What's in the box:
Infinity REF-FLEX8 owner's manual
- One 8" Dual 2-ohm voice coil subwoofer
- Adjustable mounting flange
- Adhesive backed gasket
- Owner's manual
Customer reviews for Infinity REF-FLEX8
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Average review:
5.0 out of 5 starsCustomer photos
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More details on the Infinity REF-FLEX8
Features & specs
| Features and Specs | ||
|---|---|---|
| Size | 8 -inch | |
| Impedance (Ohms) | --- | |
| Cone Material | Polypropylene | |
| Surround Material | Rubber | |
| Port diameter (inches) | 3 | |
| Port length (inches) | 10 | |
| Free-Air | No | |
| Dual Voice Coil | Yes | |
| Sensitivity |
84 dB at 2.83 volts | |
| Frequency Response | 25 - 500 Hz | |
| Max RMS Power Handling | 150 | |
| Peak Power Handling (Watts) | 600 | |
| Top Mount Depth (inches) | 2 9/16 | |
| Bottom Mount Depth (inches) | N/A | |
| Cutout Diameter or Length (inches) | 7 9/16 | |
| Frame Width | 10.238 | |
| Frame Length | 10.238 | |
| Vas (liters) | 12.571 | |
| Fs (Hz) | 40.1 | |
| Qts | 0.757 | |
| Xmax (millimeters) | 3.1 | |
| Parts Warranty | 1 Year | |
| Labor Warranty | 1 Year | |
| Box Requirements | ||
| Ideal Sealed Box Volume (cubic feet) | 0.93 | |
| Minimum Sealed Box Volume (cubic feet) | N/A | |
| Maximum Sealed Box Volume (cubic feet) | N/A | |
| Ideal Ported Box Volume (cubic feet) | 0.9 | |
| Minimum Ported Box Volume (cubic feet) | N/A | |
| Maximum Ported Box Volume (cubic feet) | N/A | |
Product Research
Features
Measurements: Because the mounting flange is adjustable, the depth and height measurements vary based on the flange position. Depth varies from 2.52" with the flange in the top position, to zero with the flange in the bottom position. The corresponding height varies from 0.82" with the flange in the top position to 3.34" with the flange in the bottom position. Because we don't yet have programming in place to sort fit in factory subwoofer locations, contact one of our advisors to determine compatibility. There are a total of 22 positions with the following measurements:
| Flange Position | Depth | Height |
|---|---|---|
| Top | 2.52" | 0.82" |
| 2.403" | 0.937" | |
| 2.284" | 1.056" | |
| 2.166" | 1.174" | |
| 2.048" | 1.292" | |
| 1.93" | 1.41" | |
| 1.812" | 1.528" | |
| 1.694" | 1.646" | |
| 1.576" | 1.764" | |
| 1.458" | 1.882" | |
| 1.34" | 2" | |
| 1.222" | 2.118" | |
| 1.104" | 2.236" | |
| 0.986" | 2.354" | |
| 0.868" | 2.472" | |
| 0.75" | 2.59" | |
| 0.632" | 2.708" | |
| 0.514" | 2.826" | |
| 0.396" | 2.944" | |
| 0.278" | 3.062" | |
| 0.163" | 3.177" | |
| Bottom | 0" | 3.34" |
Dual 2Ω Voice Coils: The dual 2Ω voice coils offer wiring flexibility; when wired in parallel the woofer presents a 1Ω load, when wired in series the woofer presents a 4Ω load.
Terminals: The subwoofer has two pair of spring post terminals which accommodate bare speaker wire up to 12-gauge.
Enclosure: Although the Flex 8D is designed to replace factory subwoofers, there are enclosure recommendations listed in the manual. The optimum sealed enclosure volume is 0.93 ft³. The best ported enclosure volume is 0.9 ft³, using one 3" diameter x 10" long port; this yields a tuning frequency of 34.44 Hz.
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