Induction Dynamics SW1 - Manual (Page 9)

8 Audio Perfection Realized
™
Installing the SW1
With A3 Amplifier
The A3 amplifier has a built-in adjustable low-pass crossover with a bypass switch on the
back panel. This allows the subwoofer to be used with audio/video pre-amplifiers and
receivers that have their own built-in low-frequency crossover circuits.
Connecting the A3 to Your Amplifier/Receiver
The SW1 has several connection options. Read through steps 1 - 4 and choose the applicable
method for your setup, then proceed to step 5.
1. Standard Subwoofer Connection - preamp or receiver with sub output
Using high-quality interconnect cables with RCA type terminations, connect the
SUBWOOFER OUT on the audio/video preamplifier or receiver to either the L or R LOW
LEVEL inputs on the back of the A3 amplifier. In this configuration you will use the built-in
crossover circuits in the audio/video preamplifier or receiver so the low-pass switch on the
A3 amp should be in the “out” position. This bypasses the crossover. Proceed to step 5.
2. Connecting Multiple Subwoofers - preamp or receiver with sub output
Using high-quality interconnect cables with RCA type terminations, connect the
SUBWOOFER OUT on the audio/video preamplifier or receiver through a Y-connector to
either the L or R LOW LEVEL inputs on the backs of both A3 amplifiers. In this configuration
you will use the built-in crossover circuits in the audio/video preamplifier or receiver so the
low-pass switch on the A3 amp should be in the “out” position. This bypasses the crossover.
Proceed to step 5.
3. Special Low-Level Stereo Connection - preamp or receiver without sub output
Using high-quality interconnect cables with RCA type terminations, connect the RIGHT and
LEFT PREAMP OUT on the audio/video preamplifier or receiver through two Y-connectors
to the corresponding L IN or R IN on the A3. Then, connect the free leg of the Y-connectors
to the L and R inputs on the audio/video receiver or amplifier used to power the higher
frequency range speakers. In this configuration you will use the low-pass crossover in the
A3 amplifier, so the low-pass switch on the A3 amp should be in the “in” position. Proceed
to step 5.