Related Manuals for Niles TVA50
Summary of Contents for Niles TVA50
- Page 1 I N S T A L L A T I O N & O P E R A T I O N G U I D E TVA50 TVA50 STEREO AMPLIFIER/ AUTOMATED SWITCHER ® L E N D I N G...
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Page 2: Table Of Contents
T E R E O TV A50 STEREO AMPLIFIER/ AUTOMATED SWITCHER TABLE OF CONTENTS Introduction Features and Benefits TVA50 Parts Guide Installation Considerations 11 Installation Trouble- Shooting Specifications 24 Contents M P L I F I E R U T O M A T E D IMPORTANT SAFETY INSTRUCTIONS 1. - Page 3 T E R E O M P L I F I E R 11. Only use attachments/accessories specified by the manu- facture. 12. Unplug this apparatus during lightning storm or when unused for long periods of time. 13. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus,...
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Page 4: Introduction
Channel Amplifiers, or ZR Series Multi-Zone Receivers. Whatever the application, switching to a local TV, computer, portable CD or MP3 player, the TVA50 is the clear choice of professional installers who need solid, reliable performance from an automated switching amplifier. -
Page 5: Features And Benefits
• Trigger In - The presence of 3-30VAC/DC at the TRIGGER IN terminal switches the TVA50 to the local source. • 12VDC Trigger Out - Any time the TVA50 is switched to local source, a 12VDC 200mA trigger voltage is emitted and can be used to control other devices. -
Page 6: Tva50 Parts Guide
M P L I F I E R TVA50 PARTS GUIDE 1. AC IN – Removable three-prong IEC compatible power cord. 2. Current Sensing AC Outlet – TVA50 will activate and switch inputs when it senses a current draw from a connected device. - Page 7 T E R E O M P L I F I E R U T O M A T E D W I T C H E R Figure 1 Figure 2...
- Page 8 T E R E O M P L I F I E R To Current Sensing Outlet TV - Power Cord TV Variable TV - Local Room Right Left Speaker (A) TV current sense with one speaker pair U T O M A T E D TVA-50 Right/Left Line Out...
- Page 9 T E R E O M P L I F I E R To Current Sensing Outlet TV - Power Cord Right/Left TV Variable Line Out TV - Local Room Speaker (A) Out Right Left To Speaker (A) Input Speaker (A) TV current sense with two pair of 8 ohm speakers U T O M A T E D TVA-50...
- Page 10 T E R E O M P L I F I E R TV - Power Cord 12VDC Trigger out to TV lift 12VDC Niles IR Flasher TV - Local Room Niles MSU480 TV current sense with one speaker pair and a TV lift U T O M A T E D To Current Sensing Outlet TVA-50...
- Page 11 T E R E O M P L I F I E R U T O M A T E D W I T C H E R 5-7/16" 4-15/16" Figure 6: Bottom of the unit with measurements for wall mounting...
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Page 12: Installation Considerations
INSTALLATION CONSIDERATIONS “TECH TIP” Location The TVA50 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. - Page 13 W I T C H E R Speakers The TVA50 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.
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Page 14: Installation
3. Run all necessary wiring to the TVA50, local source, and speakers. Label the wires for future reference. Adjusting Current Sensitivity The current sensing capability of the TVA50 is adjustable via a recessed screw located on the bottom of the unit (Figure 6). - Page 15 M P L I F I E R 3. Gradually turn the sensitivity adjustment screw located on the bottom of the TVA50 (Figure 6) until you hear the inter- nal relay of TVA50 switch. This is indicated by a clicking sound inside the unit.
- Page 16 Horizontal (Shelf) Mount. Install the supplied self adhesive rubber feet to the bottom of the TVA50. The unit can be placed on top of a shelf in a wall unit or equipment cabinet. Nothing should be placed on top of the unit.
- Page 17 1-4 above for SPEAKER B IN. NOTE 2: Maintain proper polarity. Connect the positive terminals on the TVA50 to the positive terminals on the whole-house ampli- fier. Connect the negative terminals on the TVA50 to the negative terminals on the whole-house amplifier. To help you avoid improp- er phasing, the connector plug is keyed.
- Page 18 Connect Local Source A common application for the TVA50 is to be able to switch the speakers used in a whole-house audio system to a TV in a local room. In order to be able to adjust the volume when switched to a local TV, it is necessary to use the variable line level output of the TV when connecting to the TVA50.
- Page 19 DC voltage trigger. In current sense mode, the TV power cord gets plugged into the Current Sensing AC outlet on the TVA50. When the TV is turned ON, the TVA50 can detect an increase in current draw and will switch to the stereo Line IN.
- Page 20 1. Play a source (CD, Tuner) on the whole-house system. Set the volume to a normal listening level. 2. Turn the TV on. The TVA50 will sense the TV power, activate and switch to the local source (TV). 3. Using the remote control for the TV or the volume control on the TV, turn the volume on the TV all the way up.
- Page 21 Niles VCS100R or MVC100R, can be used to adjust the speaker level in a given room. There are two options for using volume controls with the TVA50. Both of these examples assume use of a multi-channel audio distribu- tion amplifier such as the Niles SI-1260.
- Page 22 In this application, the vol- ume control would be connected to the output (SPEAKER OUT) of the TVA50 and the fixed line level output of the TV or local device would be used. NOTE: If driving speakers and using volume controls on both SPEAKER OUT A and B, minimum acceptable impedance is 4 ohms.
- Page 23 W I T C H E R Integrating a Niles IR repeater system with a TV plugged into the current sensed outlet of a TVA50, 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 the in-wall speakers in a room.
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Page 24: Trouble Shooting
T E R E O M P L I F I E R TROUBLESHOOTING TVA50 will not power up Is TVA50 plugged in to an unswitched outlet? Is the POWER/ACTIVE LED Red? 120VAC measured from outlet with voltmeter? Try another unswitched outlet. -
Page 25: Specifications
AC requirement: 120V – 60Hz Input sensitivity: 500mV @ full output Dimensions: 2-1/4"H x 8"W x 7-1/2"D Weight: 3-1/2" lbs CONTENTS TVA50 IEC three prong AC power cord Screwless connectors Self adhesive rubber feet W I T C H E R... - Page 26 T E R E O M P L I F I E R U T O M A T E D W I T C H E R Notes...
- Page 27 T E R E O M P L I F I E R U T O M A T E D W I T C H E R Notes...
- Page 28 Niles Audio Corporation www.nilesaudio.com ©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 trademark of Niles 12331 S.W. 130 Street Audio Corporation. Because we strive to improve our products. All other trademarks are the property of their Miami, Florida, 33186 respective owners.