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Niles TVA50 - page 1
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.qxp 6/1/04 9:51 AM Page 28 ...
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Niles TVA50 - page 2
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. Read these instructions. 2. Keep these instru ...
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Niles TVA50 - page 3
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. Servicing is required when the apparatus has been damaged in any way , such as powe ...
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Niles TVA50 - page 4
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. The TV A50 is the perfect solution. When activated, by either current sensing or a voltage tri ...
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Niles TVA50 - page 5
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. • 4 Pin Screwless Speaker Connectors • Efficient Digital T echnology - TV A50 incorporates ...
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Niles TVA50 - page 6
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. 3. V oltage T rigger IN – 3.5mm mini-phone jack. TV A50 will acti- vate and switch inputs ...
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Niles TVA50 - page 7
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 ...
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Niles TVA50 - page 8
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.qxp 6/1/04 9:51 AM ...
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Niles TVA50 - page 9
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 Outlet TV A-50 T o Unswitched Outlet T o Speaker (A) Input Figur e 4 TV current sense with two pair of 8 ohm speakers T o Speaker (B) Input Speaker (B) Out ...
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Niles TVA50 - page 10
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 TV A-50 T o Unswitched Outlet T o Speaker (A) Input Figur e 5 TV current sense with one speaker pair and a TV lift IR Remote 12VDC T rigger out to TV ...
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Niles TVA50 - page 11
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.qxp 6/1/04 9:51 AM Page 10 ...
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Niles TVA50 - page 12
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 . Install ...
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Niles TVA50 - page 13
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. Fixed/V ariable Line Level Outputs T o control the TV volume through the speakers, the vari ...
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Niles TVA50 - page 14
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 . If your application is differe ...
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Niles TVA50 - page 15
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. The Power/Active LED on the front panel of the TV A50 (Figure 7) provides a visual indication ...
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Niles TVA50 - page 16
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. An unswitched 120V AC outlet is required to power the TV A50. (Unit should ...
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Niles TVA50 - page 17
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 . Tightly twist the end of each wi ...
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Niles TVA50 - page 18
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 1: If switching two speaker pairs, repeat steps ...
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Niles TVA50 - page 19
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 . In current sense mode, the TV power cord gets plugged into the C ...
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Niles TVA50 - page 20
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. 2. T urn the TV on. The TV A50 will sense the TV power , activate and switch to the local so ...
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Niles TVA50 - page 21
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 . This ...
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Niles TVA50 - page 22
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. In this applicat ...
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Niles TVA50 - page 23
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. (Figure 5) When the system is in whole-house mode, music from the main system plays through ...
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Niles TVA50 - page 24
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. TV A50 will not activate (Current Sense Mode) Is the TV plugged in to the sensed out - let on the TV A50? I ...
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Niles TVA50 - page 25
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 : 3.5mm mini phone jack. LINE IN: Gold plated RCA SPEAKER (All): Scre ...
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Niles TVA50 - page 26
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 ...
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Niles TVA50 - page 27
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 ...
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Niles TVA50 - page 28
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. MicroFlasher is a trad ...
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