NAD NAD 911 owner manual SERVICING, Installation and CON- Figuration Intructions, Levels

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SERVICING, INSTALLATION AND CON- FIGURATION INTRUCTIONS

CAUTION: These servicing and installation instructions are for use by qualified personnel only. To reduce the risk of electric shock do not per- form any servicing other than that contained in the operation instructions unless you are qualified to do so. Refer all servicing to qualified service person- nel.

CAUTION: Before removing the top cover dis- connect the unit from the mains supply.

INSERT SYSTEM CONFIGURATION.

Altering jumpers inside the unit can change the way the insert and variable level functions work so that the NAD-911 can be configured to meet the messaging requirements of the system. This must be done by qualified personnel only.

WHY USE DIFFERENT INSERT SETTINGS?

Whilst the basic function of accurately setting the music levels to individual speakers is generally the same in all installations, the announcement require- ments may vary enormously. The Insert configura- tion allows installers to match the operation of the NAD-911 exactly to the announcement needs of the user.

MICROPHONE LINE OUT LEVEL, FIXED OR VARIABLE.

If the system is being used in an area where the music level needs to be varied as the background noise varies,then the announcement levels should also go up or down with the music level. This ensures that the announcements will be heard over the music and general background noise in the area. In this situation the insert function of each channel should be set to Insert Variable.

If the system is being used in an office or shop type of venue where the music level is only occa- sionaly altered and set to low background level, then the Microphone level needs to be set up so that announcements can be heard clearly but are not too loud. Setting all channels to Insert Fixed helps to ensure that the correct announcement levels are maintained.

Some areas of the installation may never need announcements. Configure the channels feeding the speakers in these areas to Insert Disabled to ensure that announcements are not accidentally routed to these areas.

CONFIGURING THE NAD-911 INTERNAL JUMPERS.

With the unit unplugged from the AC socket, remove the lid by removing the 5 screws securing the top panel. When the 911 has been configured securely replace the unit’s top panel.

FIXED OR VARIABLE MICROPHONE LINE OUT LEVEL.

In most installations using multiple NAD 911, it will be desirable to give the first 911 control over the microphone level for all 911s in the system. In this case the first 911 should be set to Variable and all following 911s should be set to Fixed. This way the second and subsequent 911s will not alter the Microphone Line out level to the next 911.

Change jumper JP25 from the factory default set- ting ‘VARIABLE’ to the ‘FIXED’ position.

CONFIGURING MICROPHONE AND MUSIC LEVELS.

Each channel can be configured individually so that the Microphone or Line Insert volume level will always be the same regardless of the individual channels level setting. Alternatively the channel can be configured so that the Microphone level is linked to the level of the music. Turning up the channel’s level control will then also turn up the volume of the microphone.

A third setting switches off the microphone signal from that channel completely.

NOTE: For all channels the factory default is set to Variable.

FIXED MICROPHONE LEVEL.

To set up the channel so that the level of the Inserted signal (Microphone or pre-recorded mes- sage) to be at a preset level no matter what the indi- vidual channel volume setting is.

Set the four jumpers for that channel to INS FIXED.

LINKING MICROPHONE AND INPUT

LEVELS.

To set up the channel so that the channel level control alters the volume of both the music and insert levels. Set the four Jumpers for that channel to INS VARIABLE.

DISABLING MICROPHONE INSERT ON A CHANNEL.

If you don’t want the Insert signal to ever appear on a particular channel. Set the channel’s first two jumpers (JP -01 and JP -02) to INS FIXED and set the second two jumpers (JP -03 and JP -04) to INS VARIABLE

CAUTION: Do not use any other configuration of the jumpers.

NAD

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Contents NAD Important Safety Instructions Rear Panel Connections Front Panel Controls Cleaning Introduction to the NAD-911 DIS- Tribution PreamplifierRear Panel Connections MIC Important InformationFront Panel Controls Channels 1Microphone CablesBasic Connection and Operation Using Several NAD-911s TAMPER-PROOF CoversLevels SERVICING, Installation and CON- Figuration IntructionsConfiguring the NAD-911 Internal Jumpers Configuration Settings No Line Level Insert Signal No Microphone Signal or FeedbackNo Sound No Sound ONE ChannelInformations Importantes Branchements SUR LE Panneau ArriereCommandes SUR LA Face PAR- Lante Cables Branchement DES EntreesConnexion ET Fonctionnement DE Base Interconnexion DES VoiesFonctionnement DE Base Couvercles ANTI-DEREGLAGE Configuration DES Cavaliers Internes DU NAD-911 Configuration Utilisee Tion Variable INS VariableRecherche DES Pannes Wichtige Information RückwandverbindungenReinigung MICMikrofon Bedienung AN DER GerätefrontKanäle Kabel Verbindung DER EingängeDIE Verbindung VON Kanälen Verbindung DER OUTPUT-BUCHSENDIE Verteilung DES Insert Signals AN Alle Kanäle DIE Verteilung DES Insert Signals AN Bestimmte KanäleEinstellung DER Mikrofonlautstärke Allgemeine BedienungEinstellungsschutzabdeckungen SERVICE, Installation UND Bedienungsanweisungen Insert SystemkonfigurationKonfiguration DER Internen NAD-911 Jumpereinstellung Konfiguration DER MIKROFON- UND MusikeinstellungenKonfiguration DER Einstellungen Verbindung VON Mikrofon UND EingangslautstärkeAusschaltung DES MIKROFONEIN- Satzes AUF Einem Kanal Fehlerbehebung NAD 911 Technical Specifications THD+NNAD Electronics

NAD 911 specifications

The NAD NAD 911 is a significant addition to the realm of audio amplification, showcasing the brand's commitment to producing high-quality audio equipment. This model has garnered attention due to its refined sound reproduction capabilities, which appeal to both audiophiles and casual listeners alike.

At the core of the NAD 911 is its powerful amplification system, featuring a robust power output that suits a wide range of speaker configurations. With a clean and dynamic sound, this amplifier is designed to handle everything from delicate classical music to intense rock anthems, providing a rich auditory experience. The specifications boast an impressive wattage per channel, ensuring that listeners can enjoy their favorite tracks at satisfying volumes without distortion.

One of the standout technologies integrated into the NAD 911 is its proprietary PowerDrive technology. This feature optimizes power delivery to the speakers, adapting the amplifier's output to the demands of the connected load. It allows the NAD 911 to maintain high performance, delivering maximum output when required while providing a smooth and controlled sound even at high volumes.

In addition to its amplification prowess, the NAD 911 is designed with user convenience in mind. The amplifier includes a well-thought-out input selection process, offering multiple inputs to accommodate various audio sources. This makes it easy for users to connect their CD players, turntables, and streaming devices. With a simple and intuitive layout, the NAD 911 is accessible even for those who may not be tech-savvy.

The build quality of the NAD 911 reflects the brand's longstanding reputation for durability and reliability. The chassis is crafted from high-grade materials, ensuring that the amplifier can withstand the rigors of daily use while maintaining its performance integrity.

Moreover, the NAD 911 features advanced heat dissipation mechanisms, which help it operate efficiently without overheating. This not only prolongs the lifespan of the components but also contributes to the overall sound quality by minimizing interference.

Overall, the NAD NAD 911 strikes a fine balance between performance, versatility, and user-friendly design. It embodies the essence of NAD’s commitment to delivering high-fidelity sound experiences, making it an ideal choice for anyone looking to enhance their home audio setup. With its blend of innovative technology and classic audio engineering, the NAD 911 is set to leave a lasting impression in the audio community.
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