Products, RDL

RDL ST-VOX1
Audio Control, Vox Relay

The ST-VOX1 is an Audio Controlled Relay in the STICK-ON® series. When used in intercom or talkback applications, the ST-VOX1 may be triggered directly from an unbalanced microphone. In many such installations the microphone or other audio source must be preamplified, making the ST-VOX1 an…

RDL EZ-MCP1
Microphone Compressor

The EZ-MCP1 is an in-line microphone compressor that produces consistent audio levels despite wide variations (up to 30 dB) from the microphone. It is installed between a dynamic or condenser microphone and a mic-level mixer or amplifier input. The only setup required is a front-panel level trimmer…

RDL FP-ALC1
Automatic Level Control Mono +4 Balanced

The FP-ALC1 is the ideal choice in many applications where consistent mono audio levels are needed from professional sources with varying audio output levels. Power connections are made using either the full-size barrier block or a dc power jack located in one end panel.The FP-ALC1 is a single…

RDL STM-1
Mic Preamp

The STM-1 is a low-cost quality microphone preamplifier designed for use in commercial sound and broadcast applications. The compact size makes it ideal where a larger or heavier preamp cannot be used. The high-performance circuit provides a fixed 50 dB gain to bring any mic-level signal up to the…

RDL STP-1
Dual Attenuator

The STP-1 is a pair of convenient attenuator pads that can be located at the precise location that attenuation is needed. The low-cost STP-1 eliminates the costly labor of figuring and assembling fixed pads. Multi-turn trimmers in the STP-1 permit precise adjustment of levels without the need to…

RDL ST-ACR2
Audio Control Relay

The ST-ACR2 is an Audio Controlled Relay in the STICK-ON® series. These products are designed for quick, convenient installation, and reliable operation in a variety of control applications. The ST-ACR2 is designed to switch on line level sources. Two multiturn trimmers are provided. The SENS…

RDL RU-ADA4D
2X4 Stereo 1X8 Mono Distribution Amplifier

The RU-ADA4D is a four channel stereo audio distribution amplifier with input and output gain adjustments and input level metering. The module may be operated in mono to provide up to eight distributed mono signals. The inputs and outputs are connected on rear-panel detachable terminal blocks. Each…

RDL ST-IC1
Intercom Amplifier

The ST-IC1 is the ideal choice where an intercom system is to be installed, or where an amplifier is needed to bring a mic level up to a 1 W speaker level with optional muting capability.The ST-IC1 has one input, one output and two muting control terminals.The input accepts a dynamic mic, a…

RDL FP-MPA2
Microphone Phantom Adaptor

The FP-MPA2 is the ideal choice in any applications where phantom power needs to be provided to powered microphones.Two identical circuits are provided, with connections through XLR jacks. The microphone is connected to the module through the female XLR jack. The selected phantom voltage is applied…

RDL TX-1A
Line Transformer

The TX1A provides transformer isolation between balanced line and unbalanced input, and sports a level trim pot that adjusts output 4 to 24 dB below input level. Input may be 10 k ohms bridging or 600 ohms terminated. It boasts a frequency response of 20 Hz to 20 kHz (+/- 0.5 dB) and < 0.05% (1…

RDL RU-AVX4
Audio Video Switcher

The RDL RU-AVX4 switches one output between four sets of audio L/R and video consumer RCA inputs, with front-panel durable pushbuttons and rear panel terminal block connections for remote operation. Video signal quality, audio performance and pushbutton durability are equal to that found in…

RDL RU-SH1
Stereo Headphone Amp- Rack-up Series, Level Control

The RU-SH1 is a dual channel headphone amplifier that can drive high or low impedance headsets in stereo or mono. If features balanced/unbalanced left and right inputs that accept operating levels between -20 dBV and +20 dBu. It mounts in RACK-UP series rack mounts or in various RDL mounting…

RDL PS24AS
24 VDC Switching Power Supply, North American AC Plug, 500 mA, dc Plug

The RDL PS-24AS is a 24 Vdc switching power supply with a North American AC plug.RDL PS-24AS Specifications: • Input: 100 to 240 VAC • Output: 24 Vdc, 500 mA (UL, CSA) • Dimensions: 1.65 in. (4.2 cm) x 2.75 in. (7 cm) x 1.45 in. (3.7 cm), nominal • Efficiency: ENERGY STAR Level IV

RDL ST-GCA3
Audio Gain Control Amplifier

This indispensable device constantly adjusts for changes in input levels, bringing up low levels and reducing gain for high levels to continuously maintain the correct output of your system. It features two switch-selectable modes to give you flexible control of most any sound level problem. Its…

RDL SF-XMN4
Microphone to Network Interface - Dante

The SF-XMN4 is an interface that converts four XLR microphone inputs to Dante network audio channels. Special software is not required to configure the SF-XMN4. Each XLR input is equipped with a switch to set the gain for dynamic or condenser microphones. A dual-LED VU meter displays the level for…

RDL SM-K12
Stick On Mounting Strip

The SMK-12 allows removable surface or edge mounting of RDL Stick-Ons onto a panel with velcro fasteners. Panel attaches to surface with screws or foam adhesive pads.

RDL FP-PA20A
Audio Power Amp 70V and 100V Output

The FP-PA20A features a balanced line level input that may be connected unbalanced. A front panel gain control is designed to be adjusted either manually or with a trimming screwdriver. The gain range will accommodate standard unbalanced levels as well as professional balanced levels. Both a 70 V…

RDL ST-MX3
Line Level Mixer

The ST-MX3 is a line-level mixer module in the STICK-ON Series of products. It provides audio mixing of three line-level inputs with individual input gain adjustments. The line-level output is capable of driving either high or low impedance, balanced or unbalanced loads. The ST-MX3 operates from…

RDL FP-RRA
Rack Adaptor For RDL FLAT-PAK

Specially-made RDL rack rail adaptor (looks like a blank front panel with room for up to three Flat-Paks on the back side) for Flat-Pak series audio interfaces.

RDL ST-DA3
1X3 Mono Distribution Amplifier

The ST-DA3 gives you the advantages of an audio distribution amplifier PLUS you can put it where you need it. The ST-DA3 allows bridging of any audio line, adjusting the gain, and driving up to three high or low impedance, balanced or unbalanced loads. The ST-DA3's wideband circuitry produces the…

RDL FP-UBC2
Converter, Unbalanced to Balanced, 2 Channel

The FP-UBC2 is the ideal choice for connectorized conversion from unbalanced to balanced audio. This module features two identical channels. Gold-plated phono jacks are utilized for each unbalanced input channel. Each output is balanced, connected through an XLR jack. A gain trim potentiometer is…

RDL STA-1
Interface Amplifier

The STA-1 is a dual-channel line-level preamplifier with bridging inputs, adjustable gain or loss, and low-impedance outputs. Each of the two identical circuits is both an electronic line transformer and a line amplifier. Hook up the STA-1 just like a pair of audio transformers with gain. True dc…

RDL HR-DDA4
Digital Audio Distributor

The Radio Design Labs HR-DDA4 is the ideal choice in installations requiring high quality distribution of a digital audio signal. The input and each of the four outputs support AES/EBU, S/PDIF or AES-3ID formats. The HR-DDA4 automatically detects a valid input on any of the four input jacks: S/PDIF…

RDL RU-MLD4
1X4 Mic/Line Distribution Amp

The RU-MLD4 is a four channel audio distribution amplifier. The input and all four outputs may be connected through the front-panel XLR jacks or on the rear panel detachable terminal blocks. The input accepts either a balanced microphone or line level signal. Each of the four outputs provides…

RDL STD-600
600 OHM Divider / Combiner

Each STD module is a resistive branching network with RF filtering on each of the four channels. Any channel, A through D, may be either an input or an output. This permits combining stereo signals into mono inputs, splitting mono signals to multiple inputs, and even combining microphones with…