STX Audio STX-694 6x9" 4-Way Coaxial Speakers, 2 Pairs

The STX Audio STX-694 package supplies two pairs of 6x9-inch coaxial car speakers for replacing worn factory speakers or adding matching rear-deck and door speakers where 6x9 fitment is used. The package includes four speakers and is listed as a 4-way car-audio coaxial system. Each speaker uses a 4-ohm load, making the set suited to conventional car-audio speaker wiring.

This bundle is intended for drivers who need coverage for four speaker locations rather than a single replacement pair. It can be used with a factory head unit or with a multichannel amplifier, depending on the vehicle and system plan. Confirm the vehicle's opening, mounting depth, and wiring arrangement before purchase, as vehicle-specific fitment information is not provided.

STX lists 150 watts RMS and 600 watts maximum power per speaker. That equals 300 watts RMS and 1,200 watts maximum for one pair, while this two-pair package totals 600 watts RMS and 2,400 watts maximum when calculated across all four speakers. Use an amplifier or receiver that is appropriate for 4-ohm speakers and set gains carefully.

The speaker construction combines a polypropylene woofer with a silk-dome tweeter in a coaxial form factor. A moisture-resistant rubber surround supports the woofer assembly, while the stamped-steel basket is described as anti-resonant. These elements are intended to provide a practical replacement-speaker design with integrated high-frequency reproduction.

Spade speaker terminals simplify connection to compatible vehicle wiring or adapter leads. The STX-694 can serve as a four-speaker upgrade on its own or as part of a broader system with a multichannel amplifier and separate bass support. Because no vehicle application guide is supplied with the product data, installation should be planned around the vehicle's actual 6x9-inch locations.

Key Features

• Two-Pair Package: Includes four STX-694 6x9-inch speakers.
• 4-Ohm Impedance: Matches common car-audio speaker circuits.
• Coaxial Layout: Combines woofer and tweeter in each speaker.
• Power Handling: Rated at 150 watts RMS per speaker.
• Polypropylene Woofer: Provides the main low- and midrange driver.
• Spade Terminals: Allow direct connection to compatible speaker wiring.

Design & Installation

The STX-694 uses a polypropylene woofer, silk-dome tweeter, moisture-resistant rubber surround, and stamped-steel basket. Its coaxial construction places the high-frequency driver with the woofer, reducing the need for separately mounted tweeters. The speakers are listed in black and use a nominal 6x9-inch format.

Check the factory speaker opening, mounting depth, grille clearance, and connector style before installation. Connect each speaker as a 4-ohm load using the provided spade terminals or suitable vehicle-specific adapters. The speakers may be operated from a factory head unit or a properly matched multichannel amplifier; avoid exceeding their stated power ratings.