Russound WALTX-2 User Manual
WALTx-2
Instruction Manual
Weatherproof Volume Control
Product Overview
The WALTx-2 Weather Proof
Volume Control is designed to
provide volume control for outdoor
or wet locations and can be
mounted on an exterior wall or
hard, flat surface, as well as directly
on a section of 3/4" PVC conduit.
The WALTx-2 provides superior
WEATHERPROOF
WEATHERPROOF
VOLUME CONTROL
VOLUME CONTROL
protection against moisture from
rain, splash or sauna.
The WALTx-2 connects between the speaker outputs of an amplifier or receiver and a
pair of speakers. The 1X setting allows the volume control to be used as a standard
control. The 2X, 4X, and 8X settings allow it to be used as an UltraMatch™ control
when more than one pair of speakers is connected to the same amplifier. The
UltraMatch™ volume control provides a method of matching the minimum output
impedance of the amplifier or receiver, in addition to adjusting volume. It eliminates
the need for a speaker selector or impedance matching equipment. The WALTx-2
adjusts volume level by attenuating the amplifier signal output of the WALTx-2 to the
speakers. All Russound Volume Controls are manufactured using a high-quality
autoformer design which provides long life, excellent frequency response, no heat
build-up, and maximum power transfer from the amplifier to the speakers. All
Russound WALTx-2 volume controls conform to UL Standard 1492 First Edition, and
for Canada Certified to CSA Standard 22.2 No. 1-M94. This certification assures that
your ALTx volume control has been designed and tested for safety.
Determining the Proper Jumper Setting for Impedance Matching
The jumpers must be set in a position that correctly multiplies the impedance of the
system to a level that is equal to or greater than the impedance of the amplifier. The
jumper setting can be determined using the following simple steps
1.Determine the amplifier's minimum impedance. The amplifier's minimum impedance is usually found following Wattage and Frequency Response in the amplifier's
specification page of the manual. It may also be listed on the back panel of the
amplifier near the speaker terminals. AC impedance is measured in ohms.
2.From Fig 1 identify the correct impedance-matching chart according to the amplifier's minimum impedance. There are two impedance matching charts, one for 8
ohm amplifiers and one for 4 ohm amplifiers. Choose the chart that describes your
amplifier. If your amplifier is 6 ohm stable, use the 8 ohm chart.
3.Determine the impedance for each pair of speakers connected to the amplifier by
referring to its manual.
4.Determine the total number of 4 ohm pairs of speakers. (rows on charts)
5.Determine the total number of 8 ohm pairs of speakers. (columns on charts)
6.Follow the appropriate row and column to determine jumper settings.
Once the jumper setting has been determined, set the jumpers to the appropriate
positions, either 2X, 4X, or 8X, as shown in Fig 2.
Considerations
1.Make sure that your amplifier has adequate wattage for the number of speakers.
Watts per channel divided by the number of pairs should equal or exceed the individual speaker’s minimum wattage requirements.
2
2.You must use an UltraMatch™ volume control for each pair of speakers.
8X
4X
1X-2X
2X-4X-8X
1X
8X
4X
1X-2X
2X-4X-8X
1X
8X
4X
1X-2X
2X-4X-8X
1X
8X
4X
1X-2X
2X-4X-8X
1X
8X
4X
1X-2X
2X-4X-8X
1X
8X
4X
1X-2X
2X-4X-8X
1X
8X
4X
1X-2X
2X-4X-8X
1X
8X
4X
1X-2X
2X-4X-8X
1X
3.Every jumper setting must be set on the same setting throughout the system.
4.A minimum speaker load of 4 ohms can be connected to the output of each
UltraMatch™ volume control.
Fig 1 Impedance Matching Charts For UltraMatch™
Impedance Matching For 4 Ohm
8 Ohm Pairs
012345678910111213141516
0 - 1X 1X 2X 2X 4X 4X 4X 4X 8X 8X 8X 8X 8X 8X 8X 8X
1 1X2X2X4X4X4X4X8X8X8X8X8X8X8X8X
2 2X4X4X4X4X8X8X8X8X8X8X8X8X
3 4X4X4X8X8X8X8X8X8X8X8X
4 4X8X8X8X8X8X8X8X8X
5 8X8X8X8X8X8X8X
4 Ohm Pairs
6 8X8X8X8X8X
7 8X8X8X
8 8X
Example: The table to the right shows an 8 ohm
minimum impedance amplifier with 1 pair of 4 ohm
speakers and 3 pair of 8 ohm speakers. The chart
indicates the jumper setting should be set at 8X
Amplifiers
Impedance Matching For 8 Ohm Amplifiers
8 Ohm Pairs
012345678
0 - 1X 2X 4X 4X 8X 8X 8X 8X
1 2X4X4X8X 8X 8X 8X
2 4X8X8X8X8X
3 8X8X8X
4 Ohm Pairs
48X
Fig 2 Jumper Settings On Circuit Boards
1X
2X
4X
8X
3
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