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

The RDL DS-PSP1 is a stainless steel Decora-style active loudspeaker designed to deliver clear audio from an ultra-compact enclosure. Its integrated 2-watt RMS amplifier, rear-panel balanced and unbalanced inputs, and user-accessible front-panel gain adjustment combine amplification, playback, and level control in one wall- or surface-mounted unit. An internal compressor/limiter prevents clipping, while the acoustically optimized enclosure provides fidelity comparable to larger drivers.

Ideal Use Cases

The DS-PSP1 is suited to space-constrained installations that need a compact active loudspeaker with local level adjustment. It can be mounted in a wall or on a flat surface, making it useful when a conventional loudspeaker enclosure would occupy too much room. Hemispherical dispersion supports broad sound distribution from the installed position. Rear-panel connections accommodate balanced +4 dBu and unbalanced -10 dBV nominal sources, allowing the loudspeaker to integrate with either supported signal type.

Why Choose This Model

This model combines a loudspeaker, 2-watt RMS amplifier, input flexibility, and user level control in a Decora-style enclosure. The front-panel, single-turn audio-taper gain adjustment keeps routine control accessible after installation. Its compressor/limiter prevents clipping, providing protection when signal conditions could otherwise overdrive the amplifier. For installations where enclosure size matters, the acoustically optimized design delivers fidelity described as comparable to larger drivers without requiring a larger wall-mounted cabinet.

Installation and Integration

The DS-PSP1 supports both in-wall and flat-surface mounting. Its enclosure measures 4.12 inches high, 1.72 inches wide, and 2.64 inches deep, or 10.46 by 4.37 by 6.7 centimeters. Two rear-panel input options are provided: a 30 kΩ balanced input with a +4 dBu nominal level and a 10 kΩ unbalanced input with a -10 dBV nominal level. Maximum input level is +22 dBu. The unit requires ground-referenced 24 Vdc power, drawing 55 mA at idle and up to 100 mA maximum. Recommended power supplies are the PS-24AS for the USA and PS-24AX for international use.

Performance Highlights

The integrated amplifier is rated at 2 watts RMS, and maximum sound pressure level is 81 dB. Its nominal frequency range extends from 150 Hz to 20 kHz. Common-mode rejection is greater than 50 dB from 50 Hz to 120 Hz. The specified minimum input levels at maximum gain are 18 dBu for the balanced input and -19 dBV for the unbalanced input. Together with the front-panel gain control, these specifications provide defined operating parameters for matching the loudspeaker to supported source levels.

What Makes It Different

The DS-PSP1 distinguishes itself through the concentration of several functions in an ultra-compact Decora enclosure. It does not rely solely on a small physical footprint: the enclosure is acoustically optimized, the amplifier includes clipping prevention through compression and limiting, and the loudspeaker produces hemispherical dispersion when installed in a wall or on a flat surface. The stainless steel format and front-panel level adjustment further separate this user-adjustable model from configurations where gain controls remain inaccessible after installation.

Final Assessment

The RDL DS-PSP1 offers a precisely defined solution for installations requiring an active, compact, wall- or surface-mounted loudspeaker. Its 2-watt RMS amplifier, 81 dB maximum SPL, 150 Hz to 20 kHz nominal frequency range, dual input formats, clipping prevention, and accessible gain control provide the principal audio and integration functions in one Decora-style assembly. It is especially relevant when limited installation space, flexible input compatibility, and user-level adjustment are central requirements.