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In-Wall Volume Control: The Russound ALTx-2 is an in-wall volume
control that fits into a standard single-gang junction box. It comes with wall
plates and volume knobs in white, almond, and light almond.
Ultra-Match Technology: The ALTx-2's Ultra-Match technology
allows you to easily match the load of multiple speakers to the amplifier
impedance without the need for a speaker selector or other impedance-matching
equipment. It provides impedance matching for up to 16 pairs of speakers per
Performance: This in-wall volume control is designed to
handle up to 42 watts RMS and 126-watts peak power. The built-in precision
autoformers produce high-fidelity sound with excellent frequency response (20Hz
- 20kHz, +1.0/-0.5 dB at rated power). It provides maximum power transfer from
the amplifier to the speakers without heat buildup.
Volume Knob: The ALTx-2 has a simple clean design with a
simple knob and standard wall plate. The knob has 11 steps of volume, plus an
off position. The volume control provides a total of 48 dB attenuation.
Connections: The volume control has two 4-pole screw
terminal blocks, one for the input from the amplifier, and one for the output to
a pair of speakers. The terminals allow you to connect up to 12-gauge speaker
wire. The terminals can be unplugged from the volume control for easier wiring.
Speaker Wire Recommendations: For most applications,
stranded 16-gauge speaker wire is recommended. For runs of over 100', 14-gauge
is recommended, while 12-gauge is recommended for runs of up to 200'.
Jumper Settings: Each ALTx-2 has two sets of five jumper
pins (five for the left channel, and five for the right) on the back of the
volume control. The jumpers can be set to 1x, 2x, 4x, or 8x, depending upon the
number of speaker pairs being connected in the system. The jumper sleeves should
be configured the same for all speaker pairs in the system before connecting the
Amplifier Power Ratings: The amplifier should provide a
minimum of 20 watts per channel RMS for each pair of speakers connected.
Speaker Impedance: The ALTx-2 is designed for speakers with
impedances of 4, 6, or 8 ohms.
EZB Connecting Blocks: When connecting multiple pairs of
speakers to the system, you will need a Russound EZB-1SC (543EZB1SC,
sold separately) connecting block. The EZB-1SC can connect up to four volume
controls to the amplifier's output. An EZB-2SC (543EZB2SC,
sold separately) is needed to expand the EZB1SC to another four volume controls.