Cerwin-Vega H40 4" 2-Way Coaxial Speaker Set

The Cerwin-Vega H40 is a pair of 4-inch, 2-way coaxial car speakers designed to replace compact factory speakers or support a custom full-range audio upgrade. Its coaxial layout places the tweeter and woofer together, helping simplify installation where space is limited. The set is intended for vehicle locations that accept a 4-inch speaker and have sufficient mounting clearance.

Rated at 50 watts RMS and 150 watts maximum, the H40 is suited to systems using a compatible factory radio or aftermarket amplification. Its 4-ohm nominal impedance matches the common impedance used by many car-audio speaker systems. The 85 Hz to 20 kHz frequency response focuses on midrange and high-frequency reproduction, with bass support available from larger speakers or a subwoofer when desired.

A responsive polypropylene woofer cone handles the main vocal, midrange, and upper-bass duties. The UV-treated foam surround supports cone movement and is designed for durability in automotive use. With an 84 dB sensitivity rating, proper power matching and clean signal setup are important for getting the most from the speakers.

The H40 uses a dynamically balanced 1/2-inch PEI tweeter with a neodymium magnet for high-frequency reproduction. An integrated crossover directs frequencies between the woofer and tweeter, while built-in tweeter protection helps safeguard the high-frequency driver. This design keeps the system compact without requiring an external crossover module.

For an upgrade path, the H40 can serve in dash, door, or other compact factory speaker positions when the vehicle's fitment and clearances match its measurements. It is sold as a stereo pair and includes mesh steel grilles for installations where the speakers are exposed. Confirm the 3.70-inch cutout requirement and 1.81-inch mounting depth before installation.

Key Features

• 4-Inch 2-Way Coaxial Design: Combines woofer and tweeter in one compact speaker assembly.
• 50W RMS Power Rating: Supports appropriately matched factory or aftermarket amplification.
• Polypropylene Woofer Cone: Provides responsive midrange and upper-bass reproduction.
• 1/2-Inch PEI Tweeter: Handles high frequencies in the coaxial assembly.
• Integrated Tweeter Protection: Helps protect the tweeter during high-level playback.
• Mesh Steel Grilles Included: Adds protection for exposed speaker installations.

Design & Installation

The H40 uses a powder-coated, rigid stamped steel basket, a polypropylene cone, and a UV-treated foam surround. Its woofer uses a strontium ferrite magnet, while the tweeter uses a neodymium magnet. These materials support a compact, vehicle-oriented speaker design.

Measure the vehicle's opening, panel clearance, and window or mechanism clearance before mounting. The required cutout diameter is 94 mm (3.70 inches), and mounting depth is 46 mm (1.81 inches). Mount the speaker securely to a flat baffle, seal around the frame to reduce air leaks, observe polarity, and use a grommet where speaker wire passes through metal.