Manuale d’uso / di manutenzione del prodotto TVA50 del fabbricante Niles
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TV A50 STEREO AMPLIFIER/ A UT OMA TED SWITCHER TV A50 B LENDING H IGH F IDELITY AND A RCHITECTURE ® INST ALLA TION & OPERA TION GUIDE DS00395ACA-TVA50.
T A BLE OF CONTENTS Introduction 3 Features and Benefits 4 TV A50 Parts Guide 5 Installation Considerations 11 Installation 13 T rouble- Shooting 23 Specifications 24 Contents 24 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER TV A50 STEREO AMPLIFIER/ AUTOMA TED SWITCHER IMPORT ANT SAFETY INSTRUCTIONS 1.
2 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER 11. Only use attachments/accessories specified by the manu- facture. 1 2. Unplug this apparatus during lightning storm or when unused for long periods of time. 13. Refer all ser vicing to qualified ser vice personnel.
3 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER INTRODUCTION A common challenge in designing whole-house audio/video distribution systems is allowing a local source, such as audio from a bedroom TV , to play through the main system speakers in that room.
4 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER FEA TURES AND BENEFITS • Compact Size - Allows installation on cabinet shelves, side walls or back panels. • RCA Line In Jacks - T wo gold plated RCA jacks for line level audio input from local device.
5 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER TV A50 P ARTS GUIDE 1. AC IN – Removable three-prong IEC compatible power cord. 2. Current Sensing AC Outlet – TV A50 will activate and switch inputs when it senses a current draw from a connected device.
6 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER F igur e 1 F igur e 2 2 1 3 4 5 6 7 8 DS00395ACA-TVA50.qxp 6/1/04 9:51 AM Page 6.
7 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Speaker (A) T o Speaker (A) Input Right Left Whole House Receiver TV - Local Room Right/Left TV V ariable Line Out TV - Power Cord T o Curr ent Sensing Outlet TV A-50 T o Unswitched Outlet Speaker (A) Out F igur e 3 TV current sense with one speaker pair Right Left DS00395ACA-TVA50.
8 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Speaker (A) Speaker (A) Out Right Left Whole House Receiver TV - Local Room Right/Left TV V ariable Line Out TV - Power Cord T o Curr ent Sensing Outle.
9 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Speaker (A) Speaker (A) Out Right Left Whole House Receiver TV - Local Room Right/Left TV V ariable Line Out TV - Power Cord T o Current Sensing Outlet.
10 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Figur e 6: Bottom of the unit with measurements for wall mounting 5-7/16" 4-15/16" DS00395ACA-TVA50.
11 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER INST ALLA TION CONSIDERA TIONS Location The TV A50 should be installed near the device to be switched, ideally within 15 feet, to avoid signal loss and degradation over long runs of wire. Access to the speaker wires, from the whole- house system and to the local speakers, is also necessary .
12 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Speakers The TV A50 will remain stable when driving a 4 ohm load. If only one pair of speakers is being driven, 4, 6 or 8 ohm speakers systems can be used. If switching two pairs, 8 ohm speakers must be used.
13 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER INST ALLA TION Preparing for Installation 1. Figure 3 shows a typical application for switching one pair of speakers to a local source using current sensing. Refer to the other system applications for switching multiple speak- er pairs, and use of the T rigger IN/OUT .
14 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER 3. Gradually turn the sensitivity adjustment screw located on the bottom of the TV A50 (Figure 6) until you hear the inter- nal relay of TV A50 switch. This is indicated by a clicking sound inside the unit.
15 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Installation Caution : T urn the power OFF to all components in the system to prevent accidental shorting or electrical shock. Mounting the TV A50 When possible, the TV A50 should be installed near the device to be switched.
16 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Connect Whole-House System 1. Locate the 4 pin speaker connector plug for SPEAKER A IN (and remove if plugged in). 2 . Strip 1/4" of insulation from the end of each wire for SPEAKER A IN, coming from the speaker level output of the whole-house system amplifier .
17 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER 3. Use a small flathead screwdriver or your thumbnail to raise the locking tabs, exposing the holes on the removable con- nector plug. 4. Insert each wire into the appropriate hole on the remov- able connector plug, and snap the locking tab down.
NOTE: Some TVs have separate fixed (non-adjustable) and variable line outs. Some need to be switched using the TV’ s on-screen menu. Refer to the TV manual for additional information. Source Switching The TV A50 has two switching modes. Current Sensing and AC or DC voltage trigger .
19 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER BEFORE PROCEEDING SET THE VOLUME CONTROL ON THE TV A50 TO THE MINIMUM POSITION (FULL Y COUNTERCLOCKWISE). 1. Play a sour ce (CD, T uner) on the whole-house system. Set the volume to a normal listening level.
20 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER NOTE : The speaker level, when switched from the whole-house system to the TV will not always be the same. If the whole-house system was set to CD with the volume turned up and the TV gets turned on to it’ s normal listening level, the speaker level might drop when the system switches to TV .
21 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Example 2: In-W all V olume Control W ith a Fixed Output Device In some applications, it may be desirable to control speaker level of both the whole-house sources and the TV , or perhaps a local CD or DVD player that might not have a variable output, with the in-wall volume control.
22 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER Integrating a Niles IR repeater system with a TV plugged into the current sensed outlet of a TV A50, and a 12VDC controlled lift mechanism, provides an inexpensive, yet elegant solution to system automation.
23 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER TROUBLESHOOTING TV A50 will not power up Is TV A50 plugged in to an unswitched outlet? Is the POWER/ACTIVE LED Red? 120V AC measured from outlet with voltmeter? T ry another unswitched outlet.
24 S TERE O A MPLIFIER / A UT O MA TED S WIT CHER SPECIFICA TIONS Powe r: 50 watts per channel RMS into 4/8 ohms. S/N Ratio: >94dB THD: .05% at rated power . Mounting: Horizontal or vertical mount- ing. Keyholes in back panel for vertical mount. Connectors: 12V T rigger IN/OUT : 3.
S TERE O A MPLIFIER / A UT O MA TED S WIT CHER 25 Notes DS00395ACA-TVA50.qxp 6/1/04 9:51 AM Page 25.
S TERE O A MPLIFIER / A UT O MA TED S WIT CHER 26 Notes DS00395ACA-TVA50.qxp 6/1/04 9:51 AM Page 26.
Ni l es Aud io Corpora tion www .nilesaudio.com 1 233 1 S.W . 1 30 Street Miami, Florida, 3 3 18 6 T el: (305) 238-4373 Fax: (305) 238-0 1 85 © 2004 Niles Audio Corporation. All rights reserved. Niles, the Niles logo, IntelliPad and Blending High Fidelity and Architecture are registered trademarks of Niles Audio Corporation.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Niles TVA50 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Niles TVA50 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Niles TVA50 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Niles TVA50 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Niles TVA50, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Niles TVA50.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Niles TVA50. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Niles TVA50 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
