63 Applications for Hospitality
10 Items Per Page
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.
Networked with a Centrally-Located DSP
AN-2246
Description
The RDL DD‑BN2ML Wall‑Mounted Bi‑Directional Mic/Line Dante Interface provides all necessary audio connectivity for this meeting room and is networked with a centrally‑located Dante‑enabled DSP. The XLR input provides three switches that are set from the front of the unit before the cover plate is installed. One switch enables or disables P48 phantom; the second switch selects the mic or line gain range; the third switch sets the gain. The 3.5mm input sums the left and right channels of a stereo source to mono to feed one Dante network transmit channel. The two male XLR connectors on the D‑XLR2M wall plate are wired to the two line level outputs on the rear of the DD‑BN2ML to feed the two active loudspeakers. The DD‑BN2ML and D‑XLRM2 are shown mounted together in a triple‑gang RDL surface‑mounted box.
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.
Mixing a Microphone and Stereo Source to a Single Line
AN-2198
Description
The sound system in this room is equipped with a mono balanced input from the floor box. When the podium is in use, the presenter uses the microphone and also uses an audio player or laptop computer. The ST‑UMX3 Universal Audio Mixer is installed to mix signals from a single dynamic microphone and the unbalanced stereo source located in the podium to a balanced mono mic‑level or line‑level (switch‑selectable) feed to the sound system input. The small size of the ST‑UMX3 allows it to be installed in the podium or the floor box. The ST‑UMX3 3X1 Universal Audio Mixer is used to combine signals of different level, impedance or balanced/unbalanced configuration. Each input and the output is switch‑selectable for mic or line level. Single‑turn trimmers are provided for the gain adjustment of each input.
Private Bedside TV Audio Without Disturbing Partner and Adjustable Bathroom TV Audio
AN-2161
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 guest’s partner does not. With the TV speakers muted, either guest can watch and listen to the TV by plugging personal headphones into a bedside ‑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.
Multiple Control Locations in a Multi-Purpose Meeting Room / Auditorium
AN-2212
Description
The multi‑purpose room is provided with four different line‑level audio sources. Users of the room are able to select their desired source and adjust the audio level from within the space. The RU‑ASX4DR Remote Controlled Audio Selector with VCA is controlled by two D‑RC4M Four Channel Remote Controls (source selectors) and two D‑RLC10 Remote Level Controls (0 to 10 Vdc). Two control locations are shown; up to ten remote locations are possible. All sources may be muted by de‑selecting the active input on either D‑RC4M. The D‑CIJ3D Consumer Interface Jack Panel is used for connection of a user‑supplied audio source.
Wall-Mounted Bluetooth Input for Audio Player
AN-2253
Description
One Format‑A receiver is used to feed stereo audio to the power amplifier. Bluetooth audio is sent to the receiver over CATx cable with RJ45 connectors. The Bluetooth wall module is powered by the Format‑A receiver through the CATx cable.
Automatic Attenuation Avoids Feedback Between Pick-Up Mic and Monitor Speaker
AN-2205
Description
This sound system is designed to provide clear communication between two presenters and an assembled group. The two presenter positions are each equipped with a table‑top microphone and loudspeaker. The loudspeakers allow the presenters to clearly hear questions from the audience as well as each other. The audience microphone and the two presenter microphones are mixed in the rack; a line‑level signal feeds the amplifiers for the house and the table‑top loudspeakers. Each RDL ST‑GSP1 Gated Speech Preamplifier provides an automatically‑switched line‑level output from a microphone. When an ST‑GSP1 preamplifier is gated ON, the SLAVE (open‑collector) output mutes its associated ST‑MA2 Monitor Amplifier (and RU‑SP1 Monitor Speaker) and attenuates the adjacent monitor speaker, thereby preventing feedback. (Terminals on the ST‑MA2 can MUTE or provide 3 dB or 6 dB of attenuation while pulled to ground, permitting this wiring method to be expanded to multiple presenter stations.)
Remote Source Selection and Volume Control
AN-2211
Description
The classroom is equipped with three A/V sources (Computer, DVD and VCR) and an audio‑only input on a wall plate. Staff selects the audio source and sets the level through the RDL RU‑ASX4DR Remote Controlled Audio Selector using a D‑RC4M Four Channel Remote Control and a D‑RLC10M Remote Level Control. All video signals are run directly to the projector which provides video source selection. Sources may be muted by simply de‑selecting the active input at the D‑RC4M or by operating the MUTE switch on the D‑RLC10M. The D‑CIJ3D Consumer Input Jack Panel is used to balance the stereo signal of an MP3 player or any consumer source and to provide galvanic isolation.
Eliminate Audio Pops During System Power-Up and Power-Down
AN-2173
Description
The RU‑SQ6A Sequencing Controller provides complete power distribution management in this sound system. Sequencing the power ON and OFF of the system avoids annoying and sometimes damaging thumps and pops by turning power amplifiers ON last and OFF first. In systems using large power amplifiers, the sequencing of power can also avoid high inrush currents during power up. The RU‑SQ6A features outputs for six sequential steps. The Timing Interval between steps may be adjusted between 1 and 10 seconds. Each step is provided with both Open Collector and SPST dry contact outputs. In this application Open Collector outputs are used to activate the TX‑PD8X Switching Power Supply Distributors that power numerous other RDL products while dry contact closures are used to activate OEM low voltage controllable mains power outlets. Remote ON/OFF control of the RU‑SQ6A is provided by a D‑RT2 Remote Control Selector. Visual indication of the ON/OFF status is provided on the remote control.