Decora-Style Active Loudspeaker-Format-A-White-User Level Adjust

Ideal Use Cases

The RDL D-PSP1A is a white Decora-style active loudspeaker designed for compact installed-audio applications using the RDL Format-A system. It is suited to locations where a loudspeaker must mount in a wall or on a flat surface without the footprint of a conventional enclosure. Because it connects to a Format-A sender through twisted-pair cable and receives power from the sender, it fits naturally into compatible distributed-audio systems. Front-panel gain adjustment makes it useful wherever the listening level must remain accessible to the user after installation.

Why Choose This Model

The D-PSP1A combines a loudspeaker and 2 watt RMS audio amplifier in an ultra-compact Decora-format enclosure. Its integrated compressor/limiter prevents clipping, helping the amplifier operate cleanly when signal levels rise. A single-turn, audio-taper gain control is positioned on the front panel for direct adjustment. At the rear, the installer can select Format-A signal pair A, B, or C. This division between installer configuration and user-level adjustment provides practical control without placing the signal-pair selector on the visible face of the unit.

Installation and Integration

The loudspeaker accepts an RDL Format-A input through an RJ45 connection. It connects to a compatible Format-A sender with twisted-pair cable, and the sender also supplies its operating power. The required power is 24 Vdc at 55 mA while idle and 100 mA maximum, with a ground-referenced supply. The source data identifies the PS-24AS for the USA and PS-24AX for international use as recommended power supplies.

The enclosure measures 4.12 inches high by 1.72 inches wide by 2.27 inches deep, equivalent to 10.46 by 4.37 by 5.77 centimeters. Its acoustically optimized Decora form supports in-wall or flat-surface mounting. The specified ambient operating range is 0°C to 40°C maximum, with 20°C recommended. Rear-panel selection of signal pair A, B, or C should be completed as part of system setup before final placement.

Performance Highlights

A 2 watt RMS amplifier drives the integrated loudspeaker, producing a maximum sound pressure level of 81 dB. The nominal frequency range extends from 150 Hz to 20 kHz. Common-mode rejection is greater than 80 dB from 50 Hz to 120 Hz, an important electrical specification for its twisted-pair Format-A input. The compressor/limiter is specifically provided to prevent clipping, while the front-panel audio-taper control allows the gain to be set for the required listening level. Together, these specifications define a compact speaker intended for clear, controlled reproduction within its stated output range.

What Makes It Different

The D-PSP1A is distinguished by the way its audio, amplification, control, and Format-A connectivity are integrated into a Decora-style footprint. Its enclosure is acoustically optimized, and RDL specifies fidelity comparable to larger drivers despite the unit’s compact size. When installed in a wall or on a flat surface, it provides hemispherical dispersion. The white finish suits the stated Decora-style format, while the visible gain control gives users immediate level adjustment. Meanwhile, the rear-panel A, B, or C pair selector preserves installation flexibility across the three available Format-A signal pairs.

Final Assessment

The RDL D-PSP1A is a focused solution for compatible Format-A systems requiring a compact, surface-integrated active loudspeaker with accessible level control. Its 150 Hz to 20 kHz nominal range, 81 dB maximum SPL, 2 watt RMS amplifier, and clipping-prevention circuitry provide clearly defined performance parameters. RJ45 connectivity, sender-supplied power, selectable Format-A pairs, and the Decora enclosure make its integration requirements equally clear. It is best evaluated for installations where those output limits, mounting characteristics, and RDL Format-A compatibility match the system design.