Product Applications

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Home > Product Applications > Hospitality

KARAOKE SYSTEM
Microphone Compressor and Power Amplifier

AN-2139

Description:
This example shows the use of the RDL EZ‑MCP1 Microphone Compressor and the RDL HD‑PA35U Power Amplifier in a Karaoke system. The EZ‑MCP1 is an in‑line device that connects between a dynamic or condenser microphone and the mic‑level input of the Karaoke machine. When properly adjusted, it will produce consistent audio levels despite wide variations of up to 30 dB from the microphone and will control signal overloads that cause distortion and clipping. The output of the HD‑PA35U Power Amplifier is rated at 35 W RMS into a 4Ω or 8 Ω load. The included analog compressor/limiter allows the amplifier to produce audio output levels and clarity normally expected from amplifiers with a much higher output rating. Additionally, the amplifier includes Sleep Mode circuitry that puts the amplifier into standby mode after a predetermined period of time with no audio at the input. The presence of signal at the input causes the HD‑PA35U to return to full operation.

DISTRIBUTED OUTDOOR SOUND
User Audio Input And Level Control

AN-2031

Description:
An unbalanced stereo audio signal (RCA jacks or Mini‑jack) from an external source (MP3 shown) is summed and converted to balanced mono using the DS‑CIJ3 Consumer Input Jack plate. An RDL FP‑PA20A 20 Watt Audio Power Amplifier feeds 70 Volt outdoor loudspeakers in the patio seating area. The wall‑mounted RLC10KS Remote Control allows users to adjust the audio level on the patio. The RLC10KS controls the ST‑VCA3 Voltage Controlled Amplifier which sets the audio input level to the power amplifier. An FP‑PA20B 20 Watt 25 Volt Power Amplifier may be used in place of the FP‑PA20A if a 25 Volt system is desired.

AMPLIFIERS FOR MEETING ROOM AND OVERFLOW AREA
Conference Facility Audio System with Amplification for Additional Zone

AN-2128

Description:
This conference facility uses the HD‑MA35UA 35 Watt Mixer Amplifier as the main integrated audio solution. Two D‑J1 Decora XLR Wall Plates feed the microphone inputs on the mixer section of the HD‑MA35UA. An RLC10KM provides a level control for the 70 Volt speakers serving the main conference room. The Zone 1 Line Output from the HD‑MA35UA provides audio to the overflow seating area behind the meeting room. An FP‑35A 35 Watt Audio Amplifier powers the 70 Volt speakers in the expansion section. The audio level in this area is adjusted by an RLC10KM connected to an ST‑VCA3 Voltage Controlled Amplifier. The ST‑VCA3 is powered by the auxiliary module 24 Vdc power output from the HD‑MA35UA. The HD‑MA35UA and FP‑PA35A both enter an automatic sleep mode to provide significant energy and cost savings when the system is idle.

HOTEL BATHROOM STEREO AUDIO FROM TV
Compact Amplifier Integrates VCA and Compressor/Limiter

AN-2066

Description:
Providing stereo monitor speakers with remote volume control in a hotel suite bathroom is done easily with the RU‑PA40D.

The extremely compact RU‑PA40D drives stereo 4 or 8 Ohm speakers and has an integral VCA which allows use of a 10 kΩ linear potentiometer to control level. This example uses the RLC10KS remote control to create an aesthetically pleasing and professional appearance. The RU‑PA40D also features a studio quality compressor/limiter to control clipping and maximize average output levels. An input selector switch allows the unit to output a mono sum in installations where speaker placement cannot produce proper stereo imaging.

This example uses the fixed output level from the television receiver. The bathroom audio level is controlled by the RLC10KS remote control.

PATIO AUDIO SYSTEM
House Audio System with MP3 Player and 4 Outdoor Rock Loudspeakers

AN-2026

Description:
A stereo unbalanced audio signal from the house audio system is summed and converted to a balanced mono signal using the TX‑J2 Unbalanced Input Transformer. The 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. Source selection is controlled by the house audio system and volume is controlled using the house audio system and/or the MP3 player, if its in use. 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. 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.

HOTEL GUEST ROOM BEDSIDE AUDIO SYSTEM
Listen to Private TV Audio Using Headphones Without Disturbing Partner

AN-2152

HOTEL BATHROOM AUDIO
Remote Level Control and Source Selection

AN-2068

Description:
The compact size of RDL modules allows the creation of a system to provide high quality sound in a nearby room without dedicating space for electronic equipment. The example pictured allows remote level control and source selection using equipment which can be placed in electrical boxes or tucked into a TV armoire.

The TX‑J2 provides a balanced mono signal from the stereo unbalanced sources used in this system. The ST‑SSR1 allows switching between the satellite radio receiver and the television audio in the adjacent room. It is controlled by the RC2‑STS. The ST‑VCA3 adjusts audio level set by the RLC10KS mounted in the wall. The power amplifier is an ST‑PA18 which incorporates an on‑board compressor/limiter. The ST‑PA18 can provide up to 18 Watts RMS to power an 8 Ohm speaker. The completed system projects a professional, aesthetically pleasing image for years of reliable operation.

This example uses fixed output levels from the two sources. The bathroom audio level is controlled by the RLC10KS remote control.

AUTOMATIC CONTROL OF RESTAURANT AV SYSTEM POWER
Conserve Energy and Provide Unattended Operation

AN-2107

Description:
The RDL FP‑ECC1 Energy Conservation Controller automatically powers up the electronics for this restaurant when needed and powers down the equipment when the restaurant is vacant to conserve energy and reduce operating costs. Motion sensors in the restaurant public areas trigger the FP‑ECC1 to switch on the system equipment power outlets. Continued activity in the seating areas will retrigger the FP‑ECC1 to keep the system turned on. After a switch‑selectable time period of 15, 30, or 60 minutes with no activity, the FP‑ECC1 will turn off the system electronics. No operator intervention is needed to turn the system on or off. An STM‑2 Microphone Preamplifier amplifies the reception desk paging microphone to line level. The associated push‑to‑talk switch causes the ST‑VP1 Voice‑Over/Paging Module to insert paging mic announcements through the house system. The D‑ECR1L Power On/Off Remote Control allows the system to be manually turned on and/or off. It also provides a system master level control to adjust the volume of the RU‑PA40D 40 Watt Stereo Power Amplifier.

AUDIO FOR DIGITAL SIGNAGE
Conversion of Speaker Circuits to Line Level for High Fidelity Amplification

AN-2147

Description:
Video monitors in public spaces often include speakers with insufficient fidelity and/or volume. Such flat panels typically offer only speaker level outputs. This application couples good quality speakers with RDL modules to fill the space with full fidelity audio. The only audio outputs on the flat screen are speaker‑level outputs. Each output channel is fed to the input of an RDL TX‑8A Adjustable Line Transformer which attenuates the signal to a standard balanced (or unbalanced) line level. The line‑level signals are amplified by a pair of ST‑PA18 18 W RMS Power Amplifiers to drive quality loudspeakers. The loop out of each ST‑PA18 is fed to one of the summing inputs on the ST‑CX2S Subwoofer Filter. The ST‑CX2S combines the left/right channels and applies the subwoofer low‑pass crossover. The ST‑CX2S output feeds an ST‑PA18 which is used to drive a subwoofer. This application is often installed on flat panels that have audio amplifier power ratings that should be sufficient for the space if they applied to each channel and were usable RMS power. The ST‑PA18 modules employ integral aurally transparent compression to deliver more of the modules average power to the speakers, often producing astounding fidelity when compared against the amplifier/speaker combination in the source flat panel.

BASIC TWO ROOM COMBINING SYSTEM
Room Combining System with Background Music and Volume Control

AN-2059

Description:
This system is set up in a basic two room combining configuration. The rooms can be separated/joined by a movable wall. The room audio can be combined and uncombined at the main control unit in the rack. Each room is equipped with a local audio input wall plate that accepts both mic‑level and line‑level audio. A room control plate allows volume control and the selection of local sources or background music. The second room in this system is equipped with an additional volume control at the opposite end of the room. When the rooms are separated the local inputs are associated with that room only. When the rooms are combined, the local audio from each room is combined, creating one large room. This example uses an FP‑PA20A 20 Watt 70 V amplifier for each room. Facility‑wide paging is available through the rack mounted system controller. The RCX‑5C can be used for room combining systems of two to five rooms.

STEREO REMOTE AUDIO LEVEL CONTROL
Studio Quality Volume Adjustment for Professional and Consumer Applications

AN-2158

Description:
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.

MEDIA FEED DISTRIBUTION
Buffering Multiple High Quality Audio Feeds

AN-2140

Description:
Speeches, government meetings, product announcements and other media events covered by reporters require multiple high quality audio feeds in the press room. The recording equipment may require a balanced or unbalanced line level or mic‑level signal. Each output feed must be isolated so that if one output is accidentally shorted or back‑fed, all other feeds and the public address system remain unaffected. An RDL RU‑ADA4D Audio Distribution Amplifier provides isolated audio output signals that drive a variety of audio jacks on a "Media Panel." An RDL RU‑MX4 Professional 4‑Input Mixer with selectable compressor is used to mix the audio sources. The line‑level mix is distributed by the RU‑ADA4D to up to 8 line‑level outputs on RCA, 1/4" phone, or XLR jacks. Three of its outputs are padded down to mic level using RDL TX‑LM2 line‑level to microphone‑level transformers. All jacks shown are on Decora® compatible wall plates. These jacks are also available in the RDL AMS series should a custom rack or tabletop configuration be preferred. Video distribution may be added using RDL composite and VGA/XGA distribution amplifiers.

AUTOMATIC CONTROL OF HOTEL AUDIO SYSTEM POWER
Conserve Energy and Simplify Unattended Operation

AN-2105

Description:
The RDL FP‑ECC1 Energy Conservation Controller automatically powers up the electronics for this hotel meeting room when needed and powers down the equipment when the audio sources are not in use to conserve energy and reduce operating costs. Trigger inputs bridge the mic and/or line level signals from the room to switch the system equipment on. Once on, the presence of a line level signal from the RU‑MX4 Mixer at the hold input keeps the system powered. After a switch‑selectable time period of 15, 30, or 60 minutes with no audio, the FP‑ECC1 will turn off the system electronics. No operator intervention is needed to turn the system on or off. The RLC10K wall control connected to the ST‑VCA3 Voltage Controlled Amplifier allow adjustment of background music levels when there is no live event in the room. The D‑ECR1L Power On/Off Remote Control allows the system to be manually turned on and/or off. It also provides a system master level control to adjust the volume of the RU‑PA40D 40 Watt Stereo Power Amplifier.

DISTRIBUTED AUDIO FOR EXERCISE FACILITY
SourceFlex System Provides Individual Headphone Stations

AN-2088

Description:
Each piece of exercise equipment is outfitted with an RDL SAS‑HC8 Headphone Control Station so that users can select from eight audio programs and adjust volume to their own preference. Six audio sources in this system are associated with video monitors at the front of the room. A TX‑J2 Unbalanced Input Transformer is used to combine each stereo signal to mono. Two other channels are from radio or satellite receivers. The SAS‑8i Audio Input Chassis also provides an all call paging input.

The SAS‑8i supports four SourceFlex listening stations and multiple SourceFlex expansion chassis. Listening station expansion may be added in groups of two with the SAS‑82 2 Station Audio Controller or in groups of eight with the SAS‑8C 8 Station Audio Controller. There is no practical limit to the number of listening stations in any system. Connections between the controller and each listening station use a multi‑conductor twisted‑pair cable. The SourceFlex system is reliable and cost effective without the problems of wireless systems with rechargable batteries.

HOTEL ROOM ENHANCED AUDIO SYSTEM
Private Nightstand Bedside and Bathroom TV Audio that Mutes During Emergency Paging

AN-2162

Description:
The hotel guest experience is enhanced in this application by allowing each guest to choose when and where to listen to the TV sound. In the bedroom, one guest may wish to watch and listen to the TV while the guests partner does not. With the TV speakers muted, either guest can watch and listen to the TV by plugging personal headphones into a bedside TP‑HA1A Headphone Amplifier with locally adjustable volume. Their partner can read or sleep in silence. This installation further enhances the hotel stay by allowing the TV audio to be heard clearly while getting ready for the day. The ‑TPA1A wall‑mounted amplifier allows a guest to set the volume as high as needed, even with shower water running. Intelligibility of the TV audio is not dependent on the volume setting in the guest room. If the TV internal speakers are muted, TV audio is only heard in the bathroom. This is ideal if one guest sleeps in or reads a newspaper while the other guest is using the bathroom. This installation assures guests have the opportunity to hear emergency paging by automatically shutting off the headphone and restroom amplifiers. During a facility‑wide emergency page, the TX‑PCR1 Paging Controlled Relay shuts off power to the hotel room audio system. With no power applied to the FP‑TPS4A the guest room audio system is muted making it possible for the hotel guests to hear the emergency page. Once the page is completed the TX‑PCR1 reapplies power to the FP‑TPS4A, returning the audio system to normal operation. (NOTE: The TX‑PCR1 must be installed so that its power is not interrupted during emergency paging. Two power supplies are shown. This application may be powered from a single power supply. Contact RDL Technical Support for more details.)

LINE LEVEL MEDIA FEED DISTRIBUTION
Buffering High Quality Audio Feeds

AN-2141

Description:
Speeches, government meetings, product announcements and other media events covered by reporters require multiple high quality audio feeds in the press room. The recording equipment may require a balanced or unbalanced line level or mic‑level signal. Each output feed must be isolated so that if one output is accidentally shorted or back‑fed, all other feeds and the public address system remain unaffected. An RDL RU‑ADA8D Audio Distribution Amplifier provides isolated audio output signals that drive a variety of audio jacks on a "Media Panel." An RDL RU‑MX4 Professional 4‑Input Mixer with selectable compressor is used to mix the audio sources. The line‑level mix is distributed by the RU‑ADA8D to up to 16 line‑level outputs on RCA, 1/4" phone, or XLR jacks. Any of these outputs could be padded down to mic level using RDL TX‑LM2 line‑level to microphone‑level transformers. All jacks shown are on Decora® compatible wall plates. These jacks are also available in the RDL AMS series should a custom rack or tabletop configuration be preferred. Video distribution may be added using RDL composite and VGA/XGA distribution amplifiers.

HOTEL ROOM COMPLETE ENHANCED AUDIO SYSTEM
Private Bedside TV Audio and Adjustable Bathroom TV Audio Without Disturbing Partner

AN-2154

Description:
This installation enhances the hotel experience when one guest wishes to watch and listen to the TV while the guests partner does not. Either guest can plug in personal headphones to the bedside TP‑HA1A Headphone Amplifier, adjust the listening level and enjoy the video program or movie. With the TV set to mute its internal speakers, each guest enjoys their environment (video/audio program or silence). In addition, this installation completes the hotel experience by allowing the TV audio to be heard clearly while getting ready for the day. The ‑TPA1A amplifier in the wall allows the guest to adjust the audio as loud as necessary, even with shower water running. Intelligibility of the TV audio is not dependent on the volume setting in the guest room. If the TV is set to mute its internal speakers, TV audio is only heard in the bathroom. This is ideal if one guest wished to sleep while the other guest is spending time in the bathroom.

HOTEL BATHROOM AUDIO FROM TV
Amplifier Provides Speaker-Level Mono Mix

AN-2065

Description:
This drawing provides a simple way to listen to hotel room television audio in the adjacent bathroom.

The ST‑PA6 has several unique features that make it ideal for this application. Its input allows combining a stereo signal to a mono sum while retaining isolation between the two input signals. The ST‑PA6 has a bass equalization adjustment that allows the installer to perform some loudness compensation.

This example shows the use of a variable level output from the television receiver. The bathroom audio level follows the level at the television receiver.

HOTEL ROOM COMPLETE ENHANCED AUDIO SYSTEM
Private Bedside TV Audio and Adjustable Bathroom TV Audio Without Disturbing Partner

AN-2154

DISTRIBUTED VGA VIDEO TO MULTIPLE MONITORS
Hotel Provides Multiple Video Monitors that Display Daily Schedule of Events

AN-2090

Description:
The daily Calendar of Events listing at this hotel is generated from an office computer. An RDL EZ‑VM14 distributes the VGA signal of the schedule display to three monitors located near the entrances of the hotel meeting rooms. The wide bandwidth of the EZ‑VM14 insures that the same high resolution image seen at the local monitor is seen at each hotel monitor.

AMPLIFICATION FOR OUTDOOR POLE-MOUNT SPEAKERS
Pole Mounted Power Amp Operation in Extreme Temperatures

AN-2125

Description:
This outdoor parking area is equipped with speakers mounted in the lamp structures to provide music and paging coverage. Speakers in each pole are powered by an RDL FP‑PA18H 18 Watt Hi‑Temp Audio Amplifier. The amplifier module is mounted in an unventilated watertight enclosure at the base of each pole. The poles recieve direct sunlight causing the potential for high internal ambient air temperatures. The highly efficient FP‑PA18H is ideally suited to this environment. It is designed for operation in ambient temperatures up to 70 degrees Celsius (about 158 degrees Fahrenheit) and contributes negligible heat to the ambient temperature inside the pole. The amplifiers integral compressor/limiter insures maximum intelligibility by keeping average power levels high and preventing clipping. The FP‑PA18H combines RDL's high audio performance standards with the capability of operation in harsh temperature environments. Notes: 1] If it is desired to monitor the operation of the complete system, the audio detector included in each FP‑PA18H can be wired back to the system audio rack to confirm that audio is being received and amplified at each pole. 2] If the FP‑PA18H is acquired with an RDL power supply, that supply must be located in an ambient environment not to exceed 40 degress C. FP‑PA18H modules are available without a power supply for use with high temperature supplies or in systems using distributed 24 Vdc power. Contact RDL Technical Support for more information.

BASIC TWO ROOM COMBINING SYSTEM
School Cafetorium Room Combining System with Automatic Audio Leveling Compression

AN-2124

Description:
This cafetorium can be used as one large room or as two smaller rooms formed by movable wall partitions. Each room has one mic and one mono or stereo line‑level input connection through a DS‑J3 input plate. EZ‑MCP1 Microphone Compressors provide consistent level and overload protection on the mic inputs. ST‑CL2 Compressor/Limiters provide the same benefits for the line inputs. The DS‑RCX2 Room Controls provide volume control in each room and allow selection of a common external source (typically background music). The RCX‑5C controls the audio system configuration, separating or combining the inputs and amplified audio to the speakers according to the room usage (one large room or two smaller rooms). The paging input overrides the audio in the entire cafetorium. Note: The RCX‑5C can be used for room combinations from two to five rooms. An HD‑PA35UA Audio Power Amplifier is used for each zone in this system to feed 70 Volt speakers. The HD‑PA35UA has an automatic sleep mode that shuts off the power amplifier when it is not in use. This offers significant energy savings for systems not operated by technical staff.

REMOTE AUDIO SOURCE SELECTION & LEVEL CONTROL
Restaurant or Club Sound System with Four Sources

AN-2138

Description:
The RU‑SX4A Balanced Audio Switcher is controlled by the RCS4S Remote Channel Selector to select 1 of 4 audio sources. The output of the RU‑SX4A is connected to the audio input of the HD‑PA35UA. The HD‑PA35UA is a 35 Watt constant voltage amplifier with an internal VCA which is controlled by an RLC10KMS Remote Level Control with Muting. The HD‑PA35UA features an integral audio compressor that controls clipping. The RCS4S and RLC10KMS are mounted inside a two gang box* with an RDL CP‑2S Stainless Steel Cover Plate.

HOTEL BATHROOM AUDIO FROM TV
Amplification with VCA Level Control

AN-2067

Description:
The compact size of the RDL modules make installation of a monitor speaker with remote volume control in a hotel suite bathroom an easy task.

The TX‑J2 provides a balanced mono sum of the stereo unbalanced output of the television receiver. The ST‑VCA3 adjusts audio level set using the RLC10KS that is wall‑mounted in the bathroom. The ST‑PA18 power amplifier incorporates an on‑board compressor/limiter and can provide up to 18 Watts RMS to power an 8 Ohm speaker. The full electronic package is small enough to easily be placed in a TV armoire.

This example uses the fixed output level from the television receiver. The bathroom audio level is controlled by the RLC10KS remote control.

AUDIO DISTRIBUTION OVER TWISTED PAIR
Multi-Zone Paging w/BGM and Message Repeater

AN-2144

Description:

An RDL FP‑MR2 Message Repeater plays back pre‑recorded messages and provides ducking or muting of the BGM source during message playback. The message repeater can be programmed to repeat automatically or may be triggered manually. Two dynamic or condenser microphones are pre‑amplified to line‑level by an RDL HR‑MP2 Dual Microphone Preamplifier. All three audio sources (BGM/Message Repeater, Paging Mic 1, Paging Mic 2) are distributed to each of the three floors of an office or retail building over readily available CAT5 cabling utilizing an RDL RU‑TPS4A Active Sender/Distributor and three TX‑TPR3A Active Receivers (one per floor). Each Active Receiver provides line‑level audio to an RDL HD‑MA35A Mixer Amplifier. The BGM/Message Repeater signal connects to Input 2 of the mixer amplifier on each floor. Input 1 of each mixer amplifier is fed from the Receiver output that corresponds with the Paging Mic (1 or 2) that will be used to page on that floor. Input 1 is set to "duck" the other amplifier input(s) so paging will take priority.

The RDL Format‑A twisted pair products provide flexibility and expandability for this multi‑zone paging system. Additional floors may be added using additional receiving modules and amplifiers./

HOTEL BATHROOM AUDIO SYSTEM
Listen to TV Audio in Guest Room and Bathroom or Without Disturbing Partner

AN-2153

Description:
This installation enhances the hotel experience by allowing the TV audio to be heard clearly while getting ready for the day. The ‑TPA1A amplifier in the wall allows the guest to adjust the audio as loud as necessary, even with shower water running. Intelligibility of the TV audio is not dependent on the volume setting in the guest room. If the TV is set to mute its internal speakers, TV audio is only heard in the bathroom. This is ideal if one guest wished to sleep while the other guest is spending time in the bathroom.

HOTEL BATHROOM AUDIO SYSTEM
Listen to TV Audio in Guest Room and Bathroom or Without Disturbing Partner

AN-2153

HOTEL GUEST ROOM BEDSIDE AUDIO SYSTEM
Listen to Private TV Audio Using Headphones Without Disturbing Partner

AN-2152

DISTRIBUTED OUTDOOR SOUND
User Audio Input Automatically Overrides House Audio in Local Zone

AN-2032

Description:
An unbalanced stereo audio signal from the house audio system is summed and converted to a balanced mono signal using the TX‑J2 Unbalanced Input Transformer. The ST‑ACR Audio Controlled Relay normally connects the house audio source to the FP‑PA20A 20 Watt Audio Power Amplifier which feeds 70 Volt outdoor loudspeakers in the patio seating area. The patio is equipped with a DS‑CIJ3 Consumer Input Jack plate to connect an unbalanced stereo audio source (RCA jacks or Mini‑jack, MP3 shown). When a source is connected and playing audio, the ST‑ACR2 detects the audio and switches the amplifier input from house audio to the connected source. The patio speakers will distribute the locally connected source as long as it is playing. When the local source is finished, the ST‑ACR2 switches back to the house audio. An FP‑PA20B 20 Watt 25 Volt Power Amplifier may be used in place of the FP‑PA20A if a 25 Volt system is desired.

ISOLATED MEDIA FEEDS
Buffering Multiple High Quality Audio Feeds

AN-2009

Description:
Speeches, government meetings, product announcements and other media events are occasions where a number of reporters in the electronic press require a high quality audio feed from the event organizers. The recording equipment in use might require a mic, balanced line level or unbalanced line‑level signal. It is critical that each feed is isolated so that if one feed is accidentally shorted or back‑fed, no other feed will be affected nor will the public address system. This example uses RDL STICK‑ONs® to provide isolated audio output signals driving a variety of audio jacks on a "Media Panel." An RDL RU‑MX4 Pro 4‑Input Mixer is used as the audio source. The line‑level source is distributed through an ST‑DA3 Audio Distribution Amplifier to line‑level outputs on RCA, 1/4¨ phone, and XLR jacks. The same source is padded down to mic level using an STP‑1 Attenuator and distributed through an STM‑DA3 Microphone Distribution Amplifier to the mic outputs. All jacks shown are on Decora® wall plates. These jacks are available in the RDL AMS series should a rack or tabletop mount be preferred. Distribution of video at these events can also be added using RDL composite and VGA/XGA distribution amplifiers.

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