Thank you for choosing the NXG NX-VMS100 slide style impedance matching volume control.
The NX-VMS100 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.)
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
left choose the proper position for the impedance matching
jumpers (see Fig. 1) and put jumpers in correct position.
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
Model NX-VMS100
100 Watt Slide Style Impedance Matching Volume Control
BACK VIEW
Fig. 1
