Decora-Style Active Loudspeaker-Stainless Steel-Installer Level Adjust

The RDL DS-PSP1F combines an active loudspeaker, a 2 W RMS audio amplifier, and installer-adjustable gain in an ultra-compact, stainless-steel Decora-style enclosure. Its balanced and unbalanced rear-panel inputs support common professional and consumer nominal signal levels, while an integrated compressor/limiter prevents clipping. The acoustically optimized enclosure provides fidelity comparable to larger drivers and hemispherical dispersion when mounted in a wall or on a flat surface.

Ideal Use Cases

This model is suited to installations that require localized audio from a compact, surface-integrated loudspeaker. Its Decora form factor is appropriate where available wall space is limited or a larger enclosure would be impractical. Hemispherical dispersion supports installations in which sound needs to spread outward from the mounting surface. The two rear-panel input options also make the DS-PSP1F useful when the available source provides either a balanced +4 dBu nominal signal or an unbalanced -10 dBV nominal signal.

Why Choose This Model

The DS-PSP1F places the essential amplification and loudspeaker functions in one compact enclosure. Its internal amplifier is rated at 2 W RMS, eliminating the need to specify a separate power amplifier for the loudspeaker itself. A compressor/limiter prevents clipping when signal levels rise, while the front-panel, single-turn audio-taper gain adjustment allows the installer to establish the required playback level. The stainless-steel configuration provides the specified finish for projects using this DS-PSP1F model.

Installation and Integration

The loudspeaker may be mounted in a wall or on a flat surface. Rear-panel connections include a 30 kΩ balanced input and a 10 kΩ unbalanced input. The balanced input operates at a nominal +4 dBu level, while the unbalanced input operates at a nominal -10 dBV level. Maximum input level is +22 dBu. At maximum gain, the listed minimum input levels are 18 dBu for the balanced input and -19 dBV for the unbalanced input.

Power requirements are 24 Vdc at 55 mA while idle and 100 mA maximum, using a ground-referenced supply. The recommended power supplies are the PS-24AS for the USA and the PS-24AX for international use. The enclosure measures 4.12 inches high, 1.72 inches wide, and 2.64 inches deep, equivalent to 10.46 by 4.37 by 6.7 centimeters.

Performance Highlights

The DS-PSP1F has a nominal frequency range of 150 Hz to 20 kHz and a maximum sound pressure level of 81 dB. Its acoustically optimized Decora enclosure is designed to produce fidelity comparable to larger drivers despite the unit’s compact dimensions. Hemispherical dispersion distributes output from the installed surface. Common-mode rejection is greater than 50 dB from 50 Hz to 120 Hz. Together with the compressor/limiter, these characteristics define a compact active loudspeaker intended for controlled, installer-configured operation.

What Makes It Different

This model distinguishes itself by fitting active amplification, dual input-level compatibility, clipping prevention, and installer gain adjustment into a Decora-style footprint. The balanced and unbalanced inputs accommodate two different nominal operating levels without changing the loudspeaker model. The gain control is set by the installer through a single-turn audio-taper adjustment, providing a direct method for establishing the output level. Its combination of compact dimensions, stainless-steel finish, and hemispherical dispersion addresses installations where both physical size and sound distribution matter.

Final Assessment

The RDL DS-PSP1F is a focused solution for compact installed audio. It offers a 2 W RMS amplifier, balanced +4 dBu and unbalanced -10 dBV inputs, a nominal 150 Hz to 20 kHz frequency range, and output up to 81 dB SPL. Installer-adjustable gain and compressor/limiter operation provide practical control over playback, while the Decora enclosure supports in-wall or flat-surface placement. For projects requiring these specific input levels and a compact stainless-steel active loudspeaker, the DS-PSP1F brings the required functions into a single enclosure.