Pioneer TS-A709 2.75" 2-Way Coaxial Speakers

The Pioneer TS-A709 is a pair of compact 2.75-inch, 2-way coaxial car speakers designed for select factory speaker locations and small custom installations. They provide a practical replacement path when an original small-format speaker has become weak, damaged, or lacks detail. Each speaker combines a woofer and centrally mounted dome tweeter in one compact assembly.

These speakers are suited to drivers upgrading compatible dash, corner, or other small OEM locations while retaining a conventional 4-ohm car-audio load. Pioneer rates the TS-A709 at 100 watts nominal power and 450 watts maximum power when used with its packaged in-line crossover network. Fitment should always be confirmed by measuring the opening, available depth, and mounting-tab clearance in the vehicle.

The sound design emphasizes broad high-frequency extension and clear upper-range reproduction from a small speaker footprint. Its specified response is 101 Hz to 34 kHz without the filter, or 850 Hz to 34 kHz with the packaged in-line crossover network. Because of its compact diameter and filtered operating range, it is most appropriately used where the vehicle or system provides lower-frequency support from larger speakers or a subwoofer.

A carbon- and mica-reinforced injected-molded polypropylene cone forms the woofer section, while a 16 mm polyetherimide hard-dome tweeter handles higher frequencies. The speaker also uses a rubber rolled surround, aramid-fiber damper, ferrite magnet, and copper-wound single voice coil. These material choices support use in the temperature and vibration conditions found in vehicle interiors.

The TS-A709 belongs to Pioneer's A-Series and uses the brand's OPEN & SMOOTH sound-design approach. Its compact round format, 2.5-inch cutout requirement, and 1.25-inch mounting depth can make it useful for compatible OEM replacement locations. For a balanced system, pair it with properly matched full-range door or rear speakers and retain the supplied in-line crossover arrangement.

Key Features

• 2-Way Coaxial Layout: Combines woofer and dome tweeter in one compact speaker assembly.
• Carbon/Mica IMPP Cone: Reinforced polypropylene cone supports responsive operation in automotive environments.
• 16 mm PEI Dome Tweeter: Handles high frequencies with a hard-dome polyetherimide diaphragm.
• In-Line High-Pass Crossover: Packaged network supports the specified filtered operating range.
• 4-Ohm Nominal Impedance: Matches the common impedance used by many car-audio systems.
• Compact OEM-Style Fitment: 2.5-inch cutout and 1.25-inch mounting depth suit compatible locations.

Design & Installation

The TS-A709 uses a round metal basket with a custom-fit basket design, carbon- and mica-reinforced IMPP cone, rolled rubber surround, aramid-fiber damper, ferrite magnet, and glass-imide voice-coil former. Its tweeter is a 16 mm PEI dome design. The speakers use lug-style terminals and a single copper-wound voice coil.

Verify a 2.5-inch cutout, 1.25-inch mounting depth, mounting-tab space, and 4-ohm system compatibility before installation. Use the packaged in-line crossover network as specified, observe speaker polarity, and ensure the speaker terminals cannot contact vehicle metal. These speakers are best used as replacements in compatible small speaker locations or as part of a system supported by larger speakers for lower frequencies.