Rockford Fosgate T1650 6.5" 2-Way Coaxial Speakers

The Rockford Fosgate T1650 is a pair of 6.5-inch, 2-way coaxial full-range car speakers designed for factory-speaker replacement and aftermarket system upgrades. Its 4-ohm design and built-in tweeter crossover provide a straightforward solution where a separate component-speaker crossover is not desired. The pair is intended for vehicle locations that can accommodate its mounting diameter and depth.

These speakers combine a carbon fiber-filled polypropylene woofer cone with a 1-inch treated aluminum dome tweeter. This coaxial arrangement places high-frequency reproduction directly with the midrange driver, keeping installation compact. The published 44 Hz to 20 kHz frequency response supports broad full-range reproduction from a door or rear-deck speaker position.

Power handling is rated at 75 watts RMS and 150 watts maximum per speaker specification. With 88 dB sensitivity at 1 watt/1 meter and a 4-ohm nominal impedance, the T1650 can be paired with a compatible aftermarket amplifier or a suitable factory-radio upgrade path. Select amplification and gain settings carefully to remain within the speaker's rated operating range.

Rockford Fosgate uses a stamp-cast aluminum frame, Santoprene rubber surround, high-temperature aluminum voice coil, and fatigue-resistant poly-cotton spider in the T1650. Its VAST surround design increases effective cone area without changing the speaker's nominal size. The bridge-mounted tweeter includes concealed crossover components for an integrated installation.

The T1650 is suited to vehicles that use a true 6.5-inch speaker location and have adequate clearance behind the mounting surface. Its FlexFit 2 mounting design can help with alignment during installation, while included grilles, trim rings, and mounting hardware support custom or replacement applications. Confirm the vehicle's cutout, depth, mounting-hole pattern, window travel, and wiring needs before installation.

Key Features

• 6.5-Inch Coaxial Design: Combines woofer and tweeter in one full-range speaker assembly.
• 75W RMS Power Rating: Supports use with appropriately matched amplification.
• Carbon Fiber-Filled Woofer Cone: Provides a rigid, injection-molded diaphragm construction.
• Treated Aluminum Dome Tweeter: Handles high frequencies through a bridge-mounted design.
• Integrated 12 dB/Octave Crossover: Filters the tweeter without a separate external crossover.
• VAST Surround Technology: Increases effective radiating cone area within the speaker frame.

Design & Installation

The T1650 uses a stamp-cast aluminum frame with an injection-molded carbon fiber-filled polypropylene cone, Santoprene rubber surround, high-temperature aluminum voice coil, and poly-cotton spider. A 1-inch treated aluminum dome tweeter is mounted above the woofer, and the concealed crossover components are integrated into the speaker assembly. Grilles and trim rings are included.

Verify a 5.51-inch mounting cutout and at least 2.52 inches of mounting depth before purchasing. The speaker has a 4-ohm nominal impedance and should be connected with correct polarity to a compatible source or amplifier. Check clearance for window mechanisms, door hardware, and trim panels before securing the speakers with the included mounting hardware.