STX Audio STX1080.4DBT 4-Channel Class D Amplifier

The STX Audio STX1080.4DBT is a four-channel full-range Class D amplifier designed to add dedicated power and system flexibility to a vehicle audio setup. It provides four amplified channels for compatible speakers, helping support an upgrade beyond basic factory-source power. Built-in Bluetooth streaming also allows compatible mobile devices to play audio wirelessly through the amplifier.

This amplifier is intended for listeners building a speaker-focused system with separate front and rear channels, component speakers, or other compatible full-range speakers. Its rated output is 80 watts RMS per channel at 4 ohms and 130 watts RMS per channel at 2 ohms. That range gives installers options when matching the amplifier to speaker impedance and power requirements.

For systems that need fewer channels with greater output, the STX1080.4DBT can be bridged to provide 280 watts RMS by two channels at 4 ohms. This configuration can suit compatible higher-power speaker or subwoofer applications. Proper impedance matching is important when using bridged channels.

Its Class D architecture is designed for efficient operation, while the full MOSFET circuit design and SMT components support the amplifier's internal construction. Adjustable high-pass and low-pass crossovers allow the signal range sent to connected speakers to be tailored to the system. Built-in protection circuitry is specified to help protect against overload, short circuits, and overheating.

The STX1080.4DBT can serve as the amplification center of a straightforward Bluetooth-based audio system or as part of a more customized installation. It is appropriate for users who want four channels of full-range amplification with selectable crossover control and bridged-channel capability. The 1100-watt maximum-power rating describes its stated peak output specification, while RMS ratings are the useful figures for matching speakers.

Key Features

• Four-Channel Amplification: Powers up to four compatible speakers from one amplifier.
• Class D Design: Provides efficient amplification in a compact electronic format.
• Bluetooth Streaming: Plays wireless audio from compatible mobile devices.
• 80W x 4 RMS at 4 Ohms: Delivers rated full-range power for four-channel speaker systems.
• Bridgeable Channels: Combines channel pairs for 280W x 2 at 4 ohms.
• Adjustable Crossovers: High-pass and low-pass filters help tailor speaker frequency ranges.

Design & Installation

The amplifier is specified with SMT components and a full MOSFET circuit design. Its Class D platform is intended to support efficient operation, while integrated protection circuits address overload, short-circuit, and overheating conditions. Bluetooth functionality is integrated for direct wireless music streaming from compatible devices.

Use the four channels for compatible full-range speakers, or bridge paired channels only with suitable 4-ohm loads. Set the high-pass or low-pass crossover according to the role of the connected speakers in the system. Installation should include correctly matched speakers, suitable power and ground wiring, signal connections as needed, and careful gain and crossover adjustment.