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2005 Niles Audio Corporation. All rights reserved. Niles and the Niles Logo are registered trademarks of Niles Audio

Corporation. All other trademarks are the property of their respective owners. Corporation.

Automated switching systems

There are 3 main categories of auto switchers.

1 Voltage Triggered

• RFS-1 RF A-B switcher voltage triggered

Product: The RFS-1 is a voltage-triggered switcher, that when triggered will switch

from a default A coaxial cable input to the B input.

Design intent: To replace manually operated coaxial A-B switches.

Common application: Standard antenna and a cable box sharing the single RF

input on a television. Antenna is hooked up to A Default input of RFS-1. The cable

box is hooked up to B Switched input. A 12-volt AC power supply is in the cable

box’s switched power plug and connected to the 12-volt control input of the RFS-1.

Antenna is passed through the Common RF until the cable box is turned on. Then

the cable box now passes through the Common output.

• SPK-1 Speaker-level A-B switcher, voltage triggered

Product: The SPK-1 is a voltage-triggered switcher, that when triggered will

switch from a default A speaker input to the B input.

Design intent: To replace manually operated speaker level A-B switches.

Common application: Two receivers sharing one pair of speakers. Receiver 1

speaker outputs are hooked up to A Default input of SPK-1 Receiver 2’s speaker

outputs are hooked up to B Switched input. A 12-volt AC power supply is plugged

in the Receiver 2 switched power outlet and connected to the 12-volt control input

of the SPK-1. Receiver 1 plays through the common speakers until Receiver 2 is

turned on. Receiver 2 is now heard through the Common output

©2005 Niles Audio Corporation 2

Unique application: In reverse, one receiver automatically switching between two

speakers based on a 12-volt trigger input. For further information on this

application contact Technical Support at Niles Audio 1-800-BUY-HIFI.

• AC-3 Voltage triggered AC power strip

Product: The AC-3 is a voltage triggered power strip that has two switched outlets

and one unswitched outlet.

Design intent: Automate power turn-on and turn-off of an A/V component or

system.

Common application: A 12-volt power supply is connected to a preamplifier and

connected to the control IN input. Any devices that need to be turned on with the

preamplifier should be plugged in the switched outlets. Note, those devices

plugged into the switched outlets should not have clocks or any type of electronic

memory or they will reset each time the preamplifier is turned off.

©2005 Niles Audio Corporation 3

• AVS-2 Line level A-B switcher, voltage triggered

Product: Audio and/or Video line level switcher that is triggered by an outside 12-

volt signal. When the 12-volt signal is present the AVS-2 will switch from the

default A input to the switched B input.

Design intent: To replace manually operated audio/video line level A-B switches.

Common application: A videocassette recorder and a video game sharing one

input of a television. A VCR’s audio/video outputs are hooked up to A Default input

of AVS-1. The video game audio/video outputs are hooked up to B Switched input.

A Niles LS-1 is used on the power LED of the video game and then is connected to

the 12-volt control input of the AVS-2. The VCR plays through the television

external input until the video game is turned on. Then the video game now is

viewed through the television’s external input.

Unique application: Used with a Niles SAS-1, a DTS pre-amplifier and a Dolby

Digital pre-amplifier share a single 6-channel amplifier. For further information on

this application contact Technical Support at Niles Audio 1-800-BUY-HIFI.

2 Signal Sensing

• ABS-1 Speaker-level A-B switcher, sound triggered.

Product: The ABS-1 is a signal sensing switcher that switches from source A to

source B.

Design intent: To replace manually operated speaker level A-B switches.

Common application: Two receivers sharing one pair of speakers. Receiver-1

speaker outputs are hooked up to A Default input of ABS-1. Receiver-2’s speaker

outputs are hooked up to B Sensing/Switched input. Receiver-1 is heard through

the speakers. When a signal is sensed on the B Sensing/Switched input the

speakers switch over to Receiver-2.

Unique application: The rear speakers of a home theater system can toggle from

being rear speakers or being same as the fronts. For further information on this

application contact Technical Support at Niles Audio 1-800-BUY-HIFI.

©2005 Niles Audio Corporation 4

• SAS-1 Combination speaker-level and A/V line-level A-B switching system that is

sound, video, or voltage-triggered.

Product: The SAS-1 is capable of switching speaker level, line level, and

composite video signals. The switching is triggered either by music sensing, (line

level or speaker level) video sensing or voltage. The SAS-1 can be divided in half,

an A side and a B side, every and all devices that hooked up to the A side will be

switched to the B side after the SAS-1 has been triggered.

Design intent: Replaces manually operated A-B switches.

Common application: Two DVD players sharing one audio/video input of a

receiver. DVD1 audio/video output is hooked up to the A audio/video input. DVD2

audio/video output is hooked up to the B audio/video input. DVD1 will be the

default DVD player and will be the one seen or heard until DVD2 is turned on, as

soon as DVD2 is turned on the SAS-1 senses the video signal and triggers the

SAS-1 to now route DVD2’s audio/video signal through its outputs.

©2005 Niles Audio Corporation 5

• TVA-50 Stereo amplifier with built in automated speaker-level A-B switcher

Product: The TVA-50, either triggered by current sensing or 3-30 voltage trigger,

is a switcher that will either pass through a speaker level signal hooked up to the

Speaker A In input or if triggered will amplify a line level signal coming in over the

Line In RCA jacks and route that signal to the speakers.

Design intent: To replace manual operated A-B switches and a receiver for local

line level signals.

Common applications: Triggering a pair of local speakers to switch between a

house-wide music system and a local television. The variable audio outputs of a

television are connected to the Line In RCA jacks of the TVA-50. Speaker level

wires from the house-wide music system are hooked up to the Speaker A In input.

Speaker wire to the local speakers is connected to the Speaker A Out. The

televisions power cord is plugged into the Current Sensing AC Outlet. The house-

wide music system is heard through the speakers until the television is turned on,

then the television’s audio is heard through the speakers.

3 Secondary Sensing

• LS-1 Light sensor, light-triggered

Product: 12-volt output device that issues a 12-volt DC signal when its photo

diode senses light.

Design intent: Senses a component’s on/off status by the change in brightness of

the component’s front panel display.

Common application: A receiver or pre-amp with no switched outlet. Place the

photo diode over a receiver’s front panel display. The 12-volt output of the LS-1

would then be connected to a Niles AC-3 or AC-6+.

©2005 Niles Audio Corporation 6

• APC-2 Current sensing AC outlet switcher

Product: Three AC outlets one current sensing, one switched and one

unswitched. N.O. (normally open) and N.C. (normally closed) relay contacts for

controlling other devices such as projector lifts or drapes. When a device that is

plugged into the current sensing input, is turned on, the switched outlet turns on

and the contact relay changes.

Design intent: Gives certain A/V components a switched AC outlet.

Common application: Triggering an electric screen, that has either a relay or is

AC triggered, to come down when a video projector is turned on. A video projector

is plugged into the Current Sensing outlet and a relay operated video screen is

hooked up to the N.O. or N.C. relay output of the APC-2. When the video projector

is turned on the relay opens/closes and drops the video screen.

©2005 Niles Audio Corporation 7

• CS12V Current sensing AC outlet trigger

Product: One current sensing AC outlet, one 12-volt trigger output for controlling

other devices such as projector lifts or drapes. When a device that is plugged into

the current sensing AC outlet, is turned on, 12 volts @ 200mA is then sent out the

3.5mm jack labeled OUT. The current sensing detection can be programmed and

the trigger output can be set at one of three delays.

Design intent: Trigger screens from a projector.

Common application: Triggering an electric screen, that is activated, to come

down when a video projector is turned on. A video projector’s power cord is

plugged into the Current Sensing AC Outlet of the CS12V and a video screen that

is voltage trigger activated, is hooked up to the OUT of the CS12V. When the video

projector is turned on the voltage trigger drops the video screen.