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Radio Design Labs

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    • RDL TX-PCR1 Paging Controlled Relay

      RDL TX-PCR1 Paging Controlled Relay

      The TX-PCR1 is the ideal choice in many applications where switching needs to be controlled from a constant-voltage amplified audio source. The module will trigger on any program material, with paging sources being the most common. The TX-PCR1 includes both an open-collector SLAVE output to control other modules or equipment and a DPDT high power switching relay suited to switching speaker loads.

      The amplified audio source is connected using a detachable terminal block. A front-panel switch is pr

         

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        Item #: RDL-TXPCR1

        Availability: In Stock

        Our Price: $130.95

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      • RDL ST-VCA3 Voltage Controlled Amplifier

        RDL ST-VCA3 Voltage Controlled Amplifier

        The ST-VCA3 is used in applications requiring smooth audio level control from a remote control panel, potentiometer or dc voltage (0 to 10 V). Installation in series with the audio input of a power amplifier allows remote control of that amplifier's level. For installations where it is preferred to keep the audio localized in the rack, audio controls are extended outside the rack from the ST-VCA3. Many installations benefit from avoiding long-term potentiometer wear from audio running through th

           

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          Item #: ST-VCA3

          Availability: Usually ships in 3-10 business days

          Our Price: $117.95

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        • RDL ST-ACR1 Line-Level Audio Controlled Relay - 0.5 to 5 s

          RDL ST-ACR1 Line-Level Audio Controlled Relay - 0.5 to 5 s

          The ST-ACR1 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-ACR1 is designed to switch on line level sources.

          Two multiturn trimmers are provided. The SENS potentiometer adjusts the audio input sensitivity. A threshold LED facilitates accurate adjustment. The module can be set to trigger on signals between -30 dBu and 0 dBu. The DELAY control sets the time requi

             

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            Item #: ST-ACR1

            Availability: Usually ships in 3-10 business days

            Our Price: $96.49

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          • RDL HD-MA35 35 Watt Mixer Amplifier with Power Supply - Low Impedance Output 4 Ohm or 8 Ohm

            RDL HD-MA35 35 Watt Mixer Amplifier with Power Supply - Low Impedance Output 4 Ohm or 8 Ohm

            The HD-MA35 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 Zone 1 output is driven from a high-efficiency Class D amplifier stage. The Zone 1 amplifier output level may be VCA controlled using various optional RDL remote controls, or by industry standard 0 to 10 Vdc or 0 to 10 kΩ controls. This output drives 4 Ω or 8 Ω speakers. The






               

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              Item #: RDL-HD-MA35

              Availability: Usually ships in 3-10 business days

              Our Price: $246.69

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            • RDL TX-J2 Unbalanced Input Transformer

              RDL TX-J2 Unbalanced Input Transformer

              The RDL TX-J2 Unbalanced Input Transformer is part of Radio Design Labs TX Series and features unbalanced stereo inputs to summed balanced mono output.

              TX Series modules are application-specific modules for the A/V and related industries. Many TX modules offer galvanic transformer isolation. Module functions include signal detection, switching, amplification, format conversion, line driving, mixing, distribution, twisted-pair sending/receiving and more. Each TX is a compact module engineered to p

                   

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                  Item #: TX-J2

                  Availability: In Stock

                  Our Price: $57.49

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                • RDL PS-24AS 500mA AC/DC Power Supply For Stick-Ons & Rack Ups

                  RDL PS-24AS 500mA AC/DC Power Supply For Stick-Ons & Rack Ups

                  Unit powers multiple, similar Stick Ons and Rack-Ups. Call our Tech Support for compatibility of non similar units.

                   

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                  Item #: PS24V

                  Availability: In Stock

                  Our Price: $27.99

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                • RDL ST-LCR1 Logic Controlled Relay - Momentary

                  RDL ST-LCR1 Logic Controlled Relay - Momentary

                  The ST-LCR1 provides double-pole, double-throw dry switching contacts and LED indicator for relay closure. The ST-LCR1 provides momentary operation and is ideally suited where additional switching contacts are needed to be added to nearly any type of control signal.

                  Required Power Supply RDL PS24V Sold Separately

                  • Add Contacts to Any Control Signal
                  • Activation from Logic Circuits
                  • DPDT Switching Relay
                  • Open-Collector Switching
                  • Control from Switch, Button or Logic Circuits

                   

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                  Item #: ST-LCR1

                  Availability: In Stock

                  Our Price: $74.49

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                • RDL ST-DA3 Line Level Distribution Amplifier - 1x3

                  RDL ST-DA3 Line Level Distribution Amplifier - 1x3

                  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 unsurpassed pure clarity, low-distortion and low-noise for which RDL products are known.

                  The ST-DA3 features RDL's SupplyFlex power input configuration. The module will operate directly from floating 24

                     

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                    Item #: ST-DA3

                    Availability: Usually ships in 3-10 business days

                    Our Price: $136.95

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                  • RDL DD-BN31 Wall-Mounted Bi-Directional Mic/Line Dante Interface 4 x 4

                    RDL DD-BN31 Wall-Mounted Bi-Directional Mic/Line Dante Interface 4 x 4

                    The DD-BN31 is a complete wall-mounted Dante audio network interface. It features two XLR mic or line inputs, one stereo Mini-jack line input and one stereo Mini-jack line output on the front panels, plus two line outputs on a rear-panel detachable terminal block. Special software is not required to configure the DD-BN31. Each XLR input provides three switches that may be set from the front of the unit when the cover plate is not installed. One switch enables or disables P48 phantom for that inp







                       

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                      Item #: RDL-DD-BN31

                      Availability: Usually ships in 3-10 business days

                      Our Price: $585.25

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                    • RDL RU-ASX4D 4x1 Stereo Balanced Audio Switcher - Terminal Block

                      RDL RU-ASX4D 4x1 Stereo Balanced Audio Switcher - Terminal Block

                      The RU-ASX4D is a four channel stereo audio selector with input gain adjustments and output level metering. The inputs and outputs are connected on rear-panel detachable terminal blocks.

                      Each of the four stereo line level inputs accepts either a balanced or an unbalanced signal. Each input is equipped with a rear panel screwdriver-adjustable input gain trimmer. Input signal levels between -15 dBV and +8 dBu may be set to the proper operating level as indicated by a stereo dual-LED VU meter. This

                           

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                          Item #: RDL-RU-ASX4D

                          Availability: Usually ships in 3-10 business days

                          Our Price: $272.75

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                        • RDL FP-MP1 Studio Quality Mic Preamp w/ Phantom - Terminals & XLR

                          RDL FP-MP1 Studio Quality Mic Preamp w/ Phantom - Terminals & XLR

                          The FP-MP1 is the ideal choice in most applications requiring a preamp. RDL's exclusive low-noise discrete circuitry produces studio quality low noise performance in an economical preamplifier. The XLR and plug-in terminal block connections make the FP-MP1 perfect for both rack-mounted hardwired installations and remote use with standard audio cables. A front-panel switch permits the installer to direct phantom voltage to the input connectors. This 3-position switch provides 24V, 12V or phantom

                             

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                            Item #: FP-MP1

                            Availability: Usually ships in 3-10 business days

                            Our Price: $218.49

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                          • RDL RU-MLB2P Mic/Line Bi-Directional Network Interface - PoE

                            RDL RU-MLB2P Mic/Line Bi-Directional Network Interface - PoE

                            The RU-MLB2 modules are Dante audio network interface products compatible with microphones and line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

                            APPLICATION: The RU-MLB2 is a high quality converter that provides professional line-level outputs from two Dante network received audio channels. It also converts two professional or consumer line-leve





                               

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                              Item #: RDL-RU-MLB2P

                              Availability: Usually ships in 3-10 business days

                              Our Price: $498.40

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                            • RDL RU-LB4 Line-Level Bi-Directional Network Interface

                              RDL RU-LB4 Line-Level Bi-Directional Network Interface

                              The RU-LB4 modules are Dante audio network interface products compatible with line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

                              APPLICATION: The RU-LB4 is a high quality converter that provides professional line-level outputs from four Dante network received audio channels. It also converts four professional or consumer line-level sources to Dan

                                   

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                                  Item #: RDL-RU-LB4

                                  Availability: Usually ships in 3-10 business days

                                  Our Price: $484.70

                                  Add to Wishlist
                                • Radio Design Labs RU-ADA4D 4 Channel Stereo Audio Distribution Amplifier

                                  Radio Design Labs RU-ADA4D 4 Channel Stereo Audio 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 of the two line level inputs accepts either a balanced or an unbalanced signal. Each input is equipped with a front panel INPUT GAIN trimmer. Input signal levels between -14 dBV unbalanced and +9 dBu b

                                       

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                                      Item #: RDL-RU-ADA4D

                                      Availability: In Stock

                                      Our Price: $241.49

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                                    • RDL SF-NL2 Two Dante Channel to Two Balanced Analog XLR Audio Network Interface

                                      RDL SF-NL2 Two Dante Channel to Two Balanced Analog XLR Audio Network Interface

                                      The RDL SF-NL2 is a line-level interface that converts two Dante network audio channels to two balanced audio outputs on XLR connectors. Each channel provides +4 dBu balanced for a network digital audio level of -20 dBFS. Each output is equipped with a selector to set the output to line level or attenuate the output by 50 dB to mic level. Special software is not required to configure the module. The SF-NL2 is a professional grade product for studio quality fidelity and low noise performance.

                                      The

                                           

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                                          Item #: RDL-SF-NL2

                                          Availability: In Stock

                                          Our Price: $339.35

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                                        • RDL RU-FN Format-A to Network Interface

                                          RDL RU-FN Format-A to Network Interface

                                          The RU-FN modules are Dante audio network interface products compatible with RDL Format-A twisted pair products. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

                                          APPLICATION: The RU-FN is an RDL Format-A receiver that connects to a Dante-enabled network. It converts the three Format-A audio pairs to Dante networked digital audio channels. Each network channel corresponds to Pair A, B or C o

                                               

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                                              Item #: RDL-RU-FN

                                              Availability: Usually ships in 3-10 business days

                                              Our Price: $459.50

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                                            • RDL TX-70A 25V/ 70V/ 100V Speaker Level Input Interface - Unbalanced Line Output

                                              RDL TX-70A 25V/ 70V/ 100V Speaker Level Input Interface - Unbalanced Line Output

                                              • Matches a 100, 70 or 25 volt speaker line to any unbalanced line-level audio input
                                              • Trimmer adjusts output level for various input voltage/power levels
                                              • Frequency response: 20 Hz to 20 kHz (+/- 0.5 dB)
                                              • THD: < 0.05% (1 kHz)

                                               

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                                              Item #: TX-70A

                                              Availability: Usually ships in 3-10 business days

                                              Our Price: $48.99

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                                            • RDL TX-10B Bridging Input Transformer

                                              RDL TX-10B Bridging Input Transformer

                                              • Add transformer isolation to any line-leve audio input
                                                Frequency response: 20 Hz to 20 kHz (+/- 0.5 dB)
                                                THD: < 0.05% (1 kHz)
                                                10 k Ohm input bridges any audio line
                                                Balanced input and output

                                               

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                                              Item #: TX-10B

                                              Availability: Usually ships in 3-10 business days

                                              Our Price: $39.95

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                                            • RDL TS-1D Transient Suppressor

                                              RDL TS-1D Transient Suppressor

                                              The TS-1D is intended to protect audio input and output circuits from the effects of transients induced on the audio lines.

                                              • Immunity from Electrostatic Discharge
                                              • Immunity from Induced Transient Voltage
                                              • Immunity from RF Interference
                                              • Immunity from Electromagnetic Pulse
                                              • CE Compliance

                                               

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                                              Item #: TS-1

                                              Availability: Usually ships in 3-10 business days

                                              Our Price: $104.49

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                                            • RDL ST-SSR1 Line-Level Audio Switch - 2x1

                                              RDL ST-SSR1 Line-Level Audio Switch - 2x1

                                              The ST-SSR1 was designed for absolute silent switching of audio signals. It supports two balanced line-level inputs and one balanced output. Each can be used unbalanced as well. The ST-SSR1 is perfect for switching between two input signals or as a silent On/Off switch for a single channel. Performance is in keeping with the technical standards for which RDL has become known. The user can program the module for either fast or soft switching.

                                              The SELECT input feeds the OUTPUT when the TRIG termina

                                               

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                                              Item #: ST-SSR1

                                              Availability: In Stock

                                              Our Price: $103.95

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                                            • RDL RU-MLB4P Mic/Line Bi-Directional Network Interface - PoE

                                              RDL RU-MLB4P Mic/Line Bi-Directional Network Interface - PoE

                                              The RU-MLB4 modules are Dante audio network interface products compatible with microphones and line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

                                              APPLICATION: The RU-MLB4 is a high quality converter that provides professional line-level outputs from four Dante network received audio channels. It also converts four professional or consumer line-le

                                                   

                                                  Read More

                                                  Item #: RDL-RU-MLB4P

                                                  Availability: Usually ships in 3-10 business days

                                                  Our Price: $619.90

                                                  Add to Wishlist
                                                • RDL RU-MLB4 Mic/Line Bi-Directional Network Interface

                                                  RDL RU-MLB4 Mic/Line Bi-Directional Network Interface

                                                  The RU-MLB4 modules are Dante audio network interface products compatible with microphones and line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

                                                  APPLICATION: The RU-MLB4 is a high quality converter that provides professional line-level outputs from four Dante network received audio channels. It also converts four professional or consumer line-le

                                                       

                                                      Read More

                                                      Item #: RDL-RU-MLB4

                                                      Availability: Usually ships in 3-10 business days

                                                      Our Price: $582.20

                                                      Add to Wishlist
                                                    • RDL SF-NP40D Network To 40W Stereo Power Amplifier

                                                      RDL SF-NP40D Network To 40W Stereo Power Amplifier

                                                      The SF-NP40D is an audio power amplifier that converts two Dante network audio channels to two 4 Ohm or 8 Ohms amplified outputs. Each output provides 20 watts into 8 ohms for a network digital audio level of 0 dBFS. Special software is not required to configure the module.

                                                      A front-panel blue LED illuminates when the SF-NP40D is powered from its included external 24 Vdc power supply. The module is equipped with both thermal and output short-circuit protection. The high-efficiency Class D output s

                                                           

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                                                          Item #: RDL-SF-NP40D

                                                          Availability: Usually ships in 3-10 business days

                                                          Our Price: $498.63

                                                          Add to Wishlist
                                                        • RDL STP-1 Universal Audio Attenuator - 2 Channel

                                                          RDL STP-1 Universal Audio Attenuator - 2 Channel

                                                          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 connect any jumpers or external resistors. The STP-1 operates in either high or low impedance, balanced or unbalanced circuits. The wiring legend is printed on the case for easy installation.

                                                          • Audio Level




                                                           

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                                                          Item #: STP-1

                                                          Availability: In Stock

                                                          Our Price: $59.49

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                                                        • RDL TX-1A Balanced to Unbalanced Transformer - Adjustable

                                                          RDL TX-1A Balanced to Unbalanced Transformer - Adjustable

                                                          • Provides transformer isolation between balanced line and unbalanced input
                                                          • Level trimpot adjusts output 4 to 24 dB below input level
                                                          • Input may be 10 k Ohm bridging or 600 Ohm terminated
                                                          • Frequency response 20 Hz to 20 kHz (+/- 0.5 dB)
                                                          • THD: < 0.05% (1 kHz)

                                                           

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                                                          Item #: TX-1A

                                                          Availability: In Stock

                                                          Our Price: $35.49

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                                                          The concept of Application-Specific-Modules was first introduced by RDL more than twenty years ago - a concept promoting unsurpassed value and performance. As the inventor of Application-Specific-Modules, RDL continues to lead the industry with their solutions to specific problems as well as building blocks of quality audio/video system designs. Markertek is the largest in-stock source for Radio Design Labs Products.

                                                          Markertek is an authorized dealer for the entire Radio Design Labs line. If you don't see what you're looking for, contact us and we'll do our best to get it for you.

                                                           
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