Cerwin-Vega S9500.2D Stroker 2-Channel Class-D Amplifier

The Cerwin-Vega S9500.2D is a two-channel, full-range Class-D car amplifier designed to add dedicated power to a pair of speakers or a compatible bridged subwoofer setup. It provides 200 watts RMS per channel at 4 ohms and 250 watts RMS per channel at 2 ohms. This makes it a practical choice for upgrading factory-powered speakers or building a compact amplified system.

Its two-channel layout supports stereo speaker systems, including component sets and coaxial speakers, while its bridged mode can power one 4-ohm subwoofer. The amplifier is stable to 2 ohms per channel in stereo operation. Variable high-pass and low-pass filters help tailor the output for speakers or bass-focused applications.

The S9500.2D uses a full-range Class-D topology with a full PWM power supply. This design is intended to provide efficient power delivery in a compact chassis while helping manage heat during normal operation. Its published bandwidth extends from 10 Hz to 35 kHz, allowing use in full-range system designs.

For signal integration, the amplifier supports low-level RCA input and high-level input capability. It also provides REM, DC-offset, and VOX signal-sensing turn-on options, which can simplify installation with a variety of source units. A pass-through RCA output is available for sending signal to an additional amplifier.

The amplifier includes a wired bass-level control and an illuminated Cerwin-Vega logo. Its compact 11.81-inch-long chassis is suited to installations where available mounting space matters. Use it as a dedicated stereo amplifier, or bridge its channels for a single 4-ohm woofer in a properly matched system.

Key Features

• Two-Channel Class-D Design: Powers a stereo speaker pair or a bridged 4-ohm subwoofer configuration.
• 250W RMS Per Channel: Delivers rated stereo output at a 2-ohm load.
• Variable Crossovers: High-pass and low-pass filters adjust from 35 Hz to 350 Hz.
• Multiple Turn-On Modes: Supports REM, DC-offset, and VOX signal-sensing activation.
• High- and Low-Level Inputs: Helps integrate the amplifier with aftermarket or compatible factory audio systems.
• Wired Bass-Level Control: Lets the user adjust bass output level from the listening position.

Design & Installation

The S9500.2D uses a compact full-range Class-D platform with a 4-layer PCB and surface-mount component construction. Its chassis includes an illuminated Cerwin-Vega logo, onboard crossover controls, input-level selection, and power/protection status indication. The published dimensions are 11.81 x 7.25 x 2.0 inches.

Mount the amplifier on a secure, dry surface with airflow around the chassis, away from direct heat and moisture. The manual specifies a minimum 8 AWG power and ground connection, with terminals accepting up to 4 AWG wire; use a 50A battery-side fuse and keep speaker loads at or above 2 ohms stereo or 4 ohms bridged. Set the crossover mode, input level, gain, and turn-on method to match the connected source unit and speakers.