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Overview: The Russound LPTx-2 is an in-wall volume control that fits
into a standard single-gang junction box. It comes with a white wall plate and volume knob.
Ultra-Match Technology: The LPTx-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 system.
Performance: This in-wall volume control is designed to handle up to
25 watts RMS and 75-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 LPTx-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 a single 8-pole screw terminal block,
with 4 terminals for the input and 4 for the output. The terminals allow you to connect up to 14-gauge speaker wire. The
terminal block 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 feet, 14-gauge is recommended.
Jumper Settings: Each LPTx-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 LPTx-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 (item #
543EZB1SC) connecting block. The EZB-1SC can connect up to four volume
controls to the amplifier's output. An EZB-2SC (543EZB2SC)
is needed to expand the EZB1SC to another four volume controls.