NXG Technology NX-VMS1003C - Slide Style Impedance Matching Volume Control - Manual

Thank you for choosing the NXG NX-VMS1003C slide style impedance matching volume control.
The NX-VMS1003C has a unique adjustable design which allows it to be used as an impedance matching stereo volume control when 2x, 4x,
8x or 16x switch positions are selected, or as a standard stereo non-impedance matching volume control when 1x switch positions are
selected (Note: 1x positions are for use with impedance matching speaker selector or other impedance matching device). When the impedance
matching switch positions are selected, this design enables you to connect up to 16 pairs of 8-ohm speakers or 8 pairs of 4-ohm speakers to
an 8-ohm stable amplifier and operate them simultaneously without the fear of amplifier overload, eliminating the need for a speaker selector
or other impedance matching device.
(Note that when using a 4-ohm stable amplifier, you can connect up to 32 pairs of 8-ohm speakers or up to 16 pairs of 4-ohm speakers.)
Recommended Switch Position 8 ohm Stable Amplifier.
Connecting 1 Pair of 8 ohm Speakers
Connecting 2 Pairs of 8 ohm Speakers
Connecting 3-4 Pairs of 8 ohm Speakers
Connecting 5-8 Pairs of 8 ohm Speakers
Connecting 9-16 Pairs of 8 ohm Speakers
1X Position
2X Position
4X Position
8X Position
16X Position
Recommended Switch Position 4 ohm Stable Amplifier.
Connecting 2 Pairs of 8 ohm Speakers
Connecting 3-4 Pairs of 8 ohm Speakers
Connecting 5-8 Pairs of 8 ohm Speakers
Connecting 9-16 Pairs of 8 ohm Speakers
Connecting 17-32 Pairs of 8 ohm Speakers
1X Position
2X Position
4X Position
8X Position
16X Position
8 ohm Speaker Chart
Recommended Switch Position 8 ohm Stable Amplifier.
Connecting 2 Pairs of 4 ohm Speakers
Connecting 3-4 Pairs of 4 ohm Speakers
Connecting 5-8 Pairs of 4 ohm Speakers
4X Position
8X Position
16X Position
4 ohm Speaker Chart
Recommended Switch Position 4 ohm Stable Amplifier.
Connecting 1 Pair of 4 ohm Speakers
Connecting 2 Pairs of 4 ohm Speakers
Connecting 3-4 Pairs of 4 ohm Speakers
Connecting 5-8 Pairs of 4 ohm Speakers
Connecting 9-16 Pairs of 4 ohm Speakers
1X Position
2X Position
4X Position
8X Position
16X Position
BACK VIEW
Fig. 2
Model NX-VMS1003C
100 Watt Slide Style Impedance Matching Volume Control
Wiring and Installation
First determine the minimum operating impedance of the
amplifier to be used in your installation. This information
should be in your amplifier owner’s manual. Using the
speaker chart at right choose the proper position for the
impedance matching jumpers (see Fig. 1) and put jumpers
in correct position.
Fig. 1