Infinity INFSPKRF697MFUS 6x9" 3-Way Car Speakers

The Infinity Reference REF697MF is a pair of 6 x 9-inch three-way car speakers designed to replace worn or limited factory speakers. They bring dedicated high-frequency drivers and a large oval woofer format to vehicles that use 6 x 9-inch speaker locations. This makes them a practical choice for listeners seeking a more capable full-range speaker upgrade without adding separate component tweeters.

With 100 watts RMS power handling and 94 dB sensitivity at 2.83V/1m, the REF697MF can be used with a compatible factory or aftermarket receiver and can also benefit from external amplification. Its 3-ohm nominal impedance is part of Infinity's True Four Ohm Impedance approach, intended to account for resistance in factory speaker wiring. Match the speakers with an amplifier or receiver that supports their load and power requirements.

The three-way design combines a Plus One polypropylene woofer cone, an edge-driven textile dome tweeter, and a textile semi-dome supertweeter. This arrangement extends the stated frequency response from 46 Hz to 30 kHz while separating bass, midrange, and high-frequency duties across dedicated drivers. A selectable tweeter-output setting provides a +3 dB option for installations where high-frequency output needs adjustment.

Infinity's Plus One woofer-cone architecture uses a larger effective cone area than conventional cones in the same class. The woofer is paired with a hi-roll rubber surround to support cone movement and everyday automotive use. Together, these design details focus on maintaining useful low-frequency output from a speaker that fits common 6 x 9-inch openings.

The REF697MF is suited to door, rear-deck, or custom-panel upgrades when vehicle clearance and mounting dimensions are verified first. Its included spacers, mounting screws, speed clips, and foam mounting tape support installation, while grilles are not included. For a complete system upgrade, pair the speakers with an appropriate amplifier, wiring, installation adapters, and vehicle-specific harnesses as needed.

Key Features

• 6 x 9-Inch Three-Way Design: Uses separate woofer, tweeter, and supertweeter drivers for full-range playback.
• 100W RMS Power Handling: Supports compatible receiver or amplifier power for stronger output capability.
• Plus One Woofer Cone: Provides increased cone area for efficient low-frequency and midrange reproduction.
• Textile High-Frequency Drivers: Includes an edge-driven dome tweeter and textile semi-dome supertweeter.
• Adjustable Tweeter Output: Offers a +3 dB setting to tailor high-frequency balance by location.
• 3-Ohm Nominal Impedance: Designed to work with factory or aftermarket car audio systems.

Design & Installation

The REF697MF uses a Plus One polypropylene woofer cone with a hi-roll rubber surround, plus textile tweeter elements for high-frequency reproduction. Its optimized frame is built around a standard 6 x 9-inch automotive speaker format. The speaker's external dimensions are 9-5/16 x 6-7/16 inches, with a total depth of 3-3/4 inches.

Confirm the vehicle's available mounting cutout, mounting depth, and clearance behind the panel before purchase. The required mounting cutout measures 8-1/2 x 5-3/4 inches, and mounting depth is 3-1/8 inches. The package includes spacers, screws, speed clips, foam tape, and an owner's manual; vehicle-specific wiring harnesses, adapter brackets, and grilles may be required separately.