Niles ABS-1 FG00271
Sound-Triggered Speaker-Level A-B Switch
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Our take on the Niles ABS-1 FG00271
Here's the scenario: You've already wired your house with remote speakers in different rooms, all being driven by your main receiver. There's a separate audio system in your bedroom, and you'd like to use its amplifier to play the audio through the same speakers you've got wired to your multi-room system. But how do you wire two amplifiers to the same set of speakers without damaging your equipment?
The Niles ABS-1 solves that problem. It provides safe switching between two amplifiers — like the one in your main system and the one in your bedroom — and a single pair of speakers. Operation is automatic: when the ABS-1 senses a signal from your secondary amp, it passes it on to the speakers. The speakers in the rest of the house are unaffected, so your main system continues to play elsewhere.
Now, back to our scenario: Install the ABS-1, and when you want to listen to your smaller system through your bedroom speakers, just turn it on and the ABS-1 does the rest.
- speaker-level inputs and outputs
- requires unswitched AC power
- sensitivity and delay controls
- 6-1/4"W x 2-7/8";H x 3-13/16"D
- warranty: 2 years
What's in the box?
Download owner's manual
- Signal-Activated amplifier A-B switch
- AC adapter (16VAC/800mA) with an attached 6.5' cord with a male mini-jack connector on other end
- Installation Guide
- "Important" tag on AC adapter
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Product Overview: The ABS-1 is designed
specifically to enable two audio sources to use one set of stereo speakers. The
speakers are connected to the device using spring-loaded push terminals. The
ABS-1 will automatically switch back and forth between the "A" and "B"
on signal level sensed by the unit at the "B" input.
Product Features: The ABS-1 offers the
- Integrates a local, independent audio source
into an existing speaker installation
- Signal-activated switch requires no user
- Will not interrupt other speakers in the
- Adjustable delay for switching back to the
- Adjustable switching-trigger level
- Compact design remains out of sight
- Power handling of 600 watts RMS
- Powered by wall-mounted AC transformer
Sensitivity Controls: Adjust the
sensitivity control clockwise until the switch activates and you can hear the
audio through the connected speakers. You will hear the relays in the ABS-1
"click" when triggered. By turning the sensitivity knob clockwise you can
increase the sensitivity up to 5 watts and by turning it counter-clockwise you
can decrease the sensitivity down to .2 watts. Once the "B" input senses the set
amount of input level it will activate the "B" speaker turn off the "A" speaker.
Once the input level goes below that input level it will switch back to speaker
"A" after a set amount of time.
Delay Controls: Adjust the delay control
clockwise to increase or counter-clockwise to decrease the delay time. This
control sets the amount of time the ABS-1 will switch from "B" speaker back to
"A" once the "B" input is removed. This delay time may be set between 1/4 of a
second and 30 seconds. The delay time takes into account certain events that
occur during the playback of sources such as the time a CD player takes to
change discs or tracks.
- Speaker-Level Power Handling:
600 watts/channel continuous (RMS)
- Minimum Trigger Level: .2 watts
- Delay-Control Range: adjustable from
0.25 to 30 seconds
- Frequency Response: Flat from 20 to
- Connectors: Spring-loaded push
- Power Requirements: 18 volts/300mA, use wall-mounted AC transformer (included)
- Weight: 1.25 lbs
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Niles ABS-1 FG00271
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