ADD PATIO AUDIO TO HOME AUDIO SYSTEM
User Audio Input Amplified to Outdoor "Rock" Speakers
An unbalanced stereo audio signal (RCA jacks or Mini‑jack) from an external source (Computer, cassette player, CD player, DVD player, radio, etc.; MP3 player shown) is summed and converted to balanced mono using the DS‑CIJ3 Consumer Input Jack plate. This signal is sent to the Home Audio System controller which is used to select the DS‑CIJ3 as the active source. Volume is controlled by the home audio system or by the MP3 player or other user‑provided audio source. The TX‑J2 balances a designated line‑level audio output from the home system and sends the signal to the RDL FP‑PA20A 20 Watt Audio Power Amplifier that feeds 70 Volt outdoor "rock" loudspeakers in the patio seating area. Each speaker is tapped at 5 Watts.
INTERFACE PROFESSIONAL & CONSUMER EQUIPMENT
Audio Format Conversion with Metering and Level Controls
It is frequently necessary to use professional and consumer audio equipment in the same environment. The EZ‑AFC2 provides both balanced‑to‑unbalanced and unbalanced‑to‑balanced conversion for stereo audio line‑level signals. Superior electrical performance ensures audio transparency. All channels are monitored via dual‑LED VU meters. Front panel knobs allow for easy level adjustment. The fully connectorized EZ‑AFC2 makes this common interface task as easy as possible.
The EZ‑AFC2 is shipped with a high efficiency power supply that connects to a locking dc power jack.
7.1 SURROUND SOUND REMOTE LEVEL CONTROL
Multi-Channel Level Control for Theater or Control Room
The RU‑VCA6A (6 channel) and RU‑VCA2A (2 channel) Digitally Controlled Attenuators are arranged in a MASTER/SLAVE configuration to allow single point level control of the 7.1 surround sound source feeding the amplifiers. Either VCA module may serve as master. This application uses an RLC10K Remote Level Control to control the RU‑VCA6A. The RU‑VCA6A control output port is connected to the control input of the RU‑VCA2A, which is set to slave mode. The RU‑VCA2A follows the level setting of the RU‑VCA6A. Multiple VCA modules may be slaved from a single master module.
The RU‑VCA6A and RU‑VCA2A offer clickless level adjustment, accurate tracking and outstanding wide‑band, low‑noise studio quality performance. They can be operated remotely by a variety of RDL single or multi‑point controls, third party controllers and/or locally via front‑panel pushbuttons. Each audio input and output may be wired balanced or unbalanced. The RU‑VCA6A and the RU‑VCA2A may be used independently in 5.1 surround and stereo systems.
Interface a Turntable to Audio Equipment with Line Inputs
This application illustrates how to interface a turntable with common audio equipment not equipped with phono inputs. The EZ‑PH1 is a compact phono preamp that produces an unbalanced stereo output using the RIAA equalization curve. Input and output connections are made through gold‑plated RCA jacks for easy connection to an amplifier auxiliary input or a CD recorder line input. Gain trimmers for each channel and dual‑LED VU meters make it easy to set preamp levels. The EZ‑PH1 is the ideal solution for phonograph record playback or dubbing. A grounding screw is provided for connection to the tone arms of quality turntables.
The EZ‑PH1 is shipped with a high efficiency power supply that connects to a locking dc power jack.
STEREO REMOTE AUDIO LEVEL CONTROL
Studio Quality Volume Adjustment for Professional and Consumer Applications
The RU‑VCA2A Two Channel Digitally Controlled Attenuator and RLC10K Remote Level Control are used to increase and decrease the level of the Stereo Sound source feeding the amplifiers.
The RU‑VCA2A offers clickless level adjustment, accurate tracking and outstanding wide‑band, low‑noise studio quality performance. It can be controlled remotely by a variety of RDL or third‑party controls and/or locally via front‑panel pushbuttons. Each audio input and output may be configured balanced or unbalanced. Multiple RU‑VCA2As and/or RU‑VCA6As may be linked together for single‑point level control of 7.1, 10.2 or 22.2 surround sound systems.
PATIO AUDIO SYSTEM
MP3 Music Player with Two Outdoor Rock Loudspeakers
An outdoor patio is equipped with a DS‑CIJ3 Consumer Input Jack Decora® plate that provides connectivity for an MP3 music player or other stereo audio source. The DS‑CIJ3 provides a balanced mono sum of the MP3 player source to the ST‑PA18 Audio Power Amplifier. The ST‑PA18 is a high‑efficiency, Class D power amplifier that provides 18 Watts RMS to the rock speakers. The ST‑PA18 has an integral audio compressor to control clipping. The DS‑CIJ3 (mounted in a CP‑1S Stainless Steel Single Gang Cover Plate and SMB‑1G Surface Mount Box) and the ST‑PA18 are mounted in a standard weatherproof box.
SWITCH MULTIPLE STEREO AUDIO SOURCES
Monitor Audio Outputs with Intergrated Headphone Amplifier
The EZ‑HSX4 has an integrated headphone amplifier that adds versatility to the four input stereo switcher. The EZ‑HSX4 uses solid‑state switching to insure reliability and so that mechanical switch noise does not affect signal quality. The front‑panel headphone jack monitors the line‑level output which may be used to feed sound systems in different rooms or to feed recording equipment. If the line output is not used, the EZ‑HSX4 can serve as a headphone amlifier with four switched inputs. The line‑level stereo output can be switched to unity (fixed) gain or can follow the level set by the front‑panel volume knob that adjusts the headphone output level.
The EZ‑HSX4 is shipped with a high efficiency power supply that connects to a locking dc power jack.
COMPOSITE VIDEO AND STEREO AUDIO SWITCHING
Select Between 4 Composite Video and Stereo Audio Sources
Switching between multiple A/V sources is a common task in home theatres. This diagram illustrates the EZ‑AVX4 being used to switch between a DVR, DVD player, a gaming console and a VCR. The RDL EZ‑AVX4 Composite Video and Stereo Audio Input Switcher features solid state switching on the audio and video signals making them immune to mechanical switch noise and ensures a long life of reliable operation.
The EZ‑AVX4 is shipped with a high efficiency power supply that connects to a locking dc power jack.
PATIO AUDIO SYSTEM
Home Entertainment System with 4 Outdoor Rock Loudspeakers
A stereo unbalanced audio signal from a home entertainment system is summed and converted to a balanced mono signal using the TX‑J2 Unbalanced Input Transformer. An RDL FP‑PA20A 20 Watt 70 Volt Audio Power Amplifier powers four 70 Volt outdoor rock speakers in a patio seating area. Each speaker is tapped at 5 Watts, for a total of 20 Watts. The volume is controlled by the home entertainment system. Using a 70 Volt system allows for the use of smaller cable sizes which reduce system costs and simplify the installation. An RDL FP‑PA20B 20 Watt 25 Volt Audio Power Amplifier may be used in place of the FP‑PA20A if a 25 Volt system is desired.
5.1 SURROUND SOUND REMOTE LEVEL CONTROL
Multi-Channel Level Control for Theater or Control Room
The RU‑VCA6A Six Channel Digitally Controlled Attenuator and RLC10K Remote Level Control are used to increase and decrease the level of the 5.1 Surround Sound source feeding the amplifiers.
The RU‑VCA6A offers clickless level adjustment, accurate tracking and outstanding wide‑band, low‑noise studio quality performance. It can be controlled remotely by a variety of RDL or third‑party controls and/or locally via front‑panel pushbuttons. Each audio input and output may be configured balanced or unbalanced. Multiple RU‑VCA6As and/or RU‑VCA2As may be linked together for single‑point level control of 7.1, 10.2 or 22.2 surround sound systems.
SIMPLE HOME AUDIO
Wall Plate Audio Routing
This simple setup allows the audio from a computer or other audio source to be shared with the audio system in another room. In this example the audio is fed from the computer into a wall plate that is wired directly to a wall plate in the second room. The two wall plates are connected with two balanced shielded audio cables. These wall plates are avaliable in RDLs grey/white color or in stainless steel. Custom labeling is available.
COMPOSITE VIDEO DISTRIBUTION
Distribute Video to Remote Location in House
This application demonstrates how to distribute a composite video signal to a remote location in a house. The EZ‑VDA2Rs bandwidth is > 400 MHz which ensures a high quality picture. Gain and equalization controls on the front panel allow adjustments for long cable runs. The EZ‑VDA2R provides professional performance in a very compact package.
The EZ‑VDA2R is shipped with a high efficiency power supply that connects to a locking dc power jack.
FOUR INPUT UNBALANCED STEREO SWITCH
High Performance Switching of Consumer Audio Sources
Many inexpensive unbalanced audio switches use mechanical contacts to switch the audio. This leads to switch noise and unreliable operation, particularly after the switches have been in service for several months. The RDL EZ‑SX4 provides long‑life, silent switching by using solid‑state technology for all audio switching. The EZ‑SX4 allows the user to select one of four unbalanced stereo sources. The output feeds the power amplifier driving the stereo speakers. The EZ‑SX4 output level is adjustable using a front‑panel knob, allowing a user to select a source and adjust volume from one location.
The EZ‑SX4 is shipped with a high efficiency power supply that connects to a locking dc power jack.
STEREO KARAOKE SYSTEM
Stereo Mixer Amplifier Adds Compression and Equalization
The EZ‑MXA20 is a feature‑rich mixer amplifier. In addition to two stereo line level inputs, the mixing section of the EZ‑MXA20 features a high quality mic preamplifier with switch‑selectable phantom power. Output power is 10 Watts RMS per channel into 8 Ohm speakers (8 Watts RMS per channel for 4 Ohm speakers). The power amplifier features a compressor, with a front‑panel LED indicator, to protect against clipping. The front panel also features a two band equalizer for tailoring frequency response. The compact size of the EZ‑MXA20 makes it the ideal choice when there is limited space for a full‑featured mixer amplifier.
The EZ‑MXA20 is shipped with a high efficiency power supply that connects to a locking dc power jack.