Reference Flex Woofer 8d


8" (200mm) adjustable depth car audio subwoofers optimized for factory location upgrades


In the pursuit of zero-compromise car audio performance, sometimes you have to think outside the box. Infinity’s new Reference Flex subwoofers have been engineered to replace and upgrade factory 8” subwoofer fitments. Using our revolutionary patent pending adjustable flange, you can balance the mounting height and depth for a totally seamless and integrated fit. To further enhance performance, an ultra-efficient motor and cone structure has been developed utilizing our signature polypropylene cone and long lasting rubber surround. To ensure optimum integration with your systems factory amplification, the Infinity reference Flex Subwoofers are available in both Single 2 Ohm and Dual 2 Ohm Voice Coil configurations. If you area looking for big bass performance but want to maintain the factory appearance of your system, the Infinity Flex Subwoofers are the ideal choice.

Know What's In The Box

  • 1 x subwoofer
  • 1 x mounting flange
  • 1 x rubber gasket
  • Owner’s manual

Product Specs, Manuals, Compatibility & Features

Documents & Downloads

The latest owner's manuals, quick start guides, and documents.

General Specifications

Power Handling
150W RMS, 600W peak
Sensitivity (@ 2.83V)
Frequency Response
25Hz – 500Hz
Voice Coil Diameter
1-9/16in. (38.9mm)
2+2 ohms


High-efficiency polypropylene woofer cone

The Reference Flex woofer cone, with its large-roll rubber surrounds, delivers efficient, clean bass thanks to superior rigidity and sensitivity.

Low-profile design

The sleek and stylish Reference Flex subwoofer offers superior performance and installation flexibility. Its slim-profile design enables it to fit perfectly in the shallow enclosures of today’s compact cars.

Patent Pending Adjustable Mounting Flange

The Reference Flex subwoofer includes a patent-pending, sliding mounting flange system that lets you adjust mounting height and depth to fit a range of factory locations.

Single or Dual 2-Ohm Voice Coil Options

Reference Flex subwoofers are available in two models: one featuring a single 2-ohm voice coil and one incorporating dual 2-ohm voice coils. You can choose the option that best fits your installation requirements.

OEM-Level Reliability Testing

Infinity Reference Flex subwoofers are subjected to the same extreme conditions we use when developing speakers for professional and applications. . We freeze them, bake them, shake them, blast them with ultraviolet light and drive them at full power for days. These grueling tests ensure that your audio investment will last for years.