Radio Design Labs (RDL)

The RDL D‑CIJ3 is the ideal choice in installations requiring the passive mixing of two unbalanced line level audio sources to feed a mono balanced (or unbalanced) audio line. The D‑CIJ3 is a complete unbalanced line‑level audio input module.

The RDL TX-PA40D Stereo Audio Amplifier is the ideal choice in many applications where a high quality, high-efficiency utility amplifier is needed to drive a pair of 4 Ω or 8 Ω speakers. It is specifically suited to fixed-gain amplification applications where gain is controlled by other equipment.

The RDL RU-PA40D Stereo Audio Amplifier is the ideal choice in many applications where a high quality, high-efficiency utility amplifier is needed to drive a pair of 4 Ω or 8 Ω speakers. It is specifically suited to amplification applications where users need to adjust the gain.

The TX-8A is the ideal choice in many applications requiring superior quality transformer coupling between the output of a 4 or 8 Ohm power amplifier and the input of an audio mixer or amplifier. A front-panel LEVEL control allows the output to be adjusted for -10 dBV or +4 dBu over a wide range of amplified power levels.

The DB-CIJ3 is the ideal choice in installations requiring the passive mixing of two unbalanced line-level audio sources to feed a mono balanced (or unbalanced) audio line.

The RDL FP-PA20B produces average audio levels and audio clarity normally expected of amplifiers delivering much higher output power.

The RDL FP-PA20 produces average audio levels and audio clarity normally expected of amplifiers delivering much higher output power.

Both a 70V and 100V amplified output are provided on the RDL FP-PA20A to drive corresponding speakers in a distributed sound system.

The RDL FP-PA35A is the ideal choice in many applications where multiple 25V, 70V or 100V speakers in a zone need to be powered from a single audio power amplifier.

The RDL RU-ADA4D is a four channel stereo audio distribution amplifier with input and output gain adjustments and input level metering and may be operated in mono to provide up to eight distributed mono signals.

The RDL HD-MA35 Mixer Amplifier with Power Supply is a three input audio mixer amplifier for systems demanding a broad range of features and high energy efficiency. Two output power amplifier zones are provided, 35 W (Zone 1) and 2 W (Zone 2).

The RDL HD-MA35A Mixer Amplifier with Power Supply is a three input audio mixer amplifier for systems demanding a broad range of features and high energy efficiency. Two output power amplifier zones are provided, 35 W (Zone 1) and 2 W (Zone 2).

The RDL FP-MR2 is a message repeater that permits electronic storage of a single recording up to one minute and forty seconds in duration. This message may be played back manually using an external contact closure to ground or using the front-panel START button.

The RDL HD-MA35U is a 4-input audio mixer amplifier for systems demanding the broadest range of features and the highest energy efficiency. Two output power amplifier zones, 35W (zone 1) and 4W (zone 2), are driven from high-efficiency Class D amplifier stages.

The RDL FP-MX4 is a single-channel audio mixing module featuring four identical inputs. Each input accepts either a mic or line level source. The output section provides four mixing potentiometers corresponding to the four inputs.