Redefining the way
you experience sound.
™
VLC-100W
STEREO VOLUME CONTROL
Installation Instructions
PLEASE NOTE:
Installation should be performed by qualified service personnel, and must meet all local building codes.
STEP 1:
DETERMINE & SET IMPEDANCE MULTIPLICATION SETTINGS
1.)
Count the total number of pairs of 4 Ohm and 8 Ohm speakers you are connecting. Count pairs of 6 Ohm speakers as 4 Ohm
speakers.
2.)
Determine if the amplifier can support a 4 Ohm or 8 Ohm speaker load. You can typically find this information in the amplifier
owner’s manual.
3.)
Determine the correct impedance match jumper position from the charts shown below. See
Figure 2
if your amplifier can handle
a 4 Ohm speaker load. See
Figure 3
if your amplifier can handle an 8 Ohm speaker load.
4.)
Set the impedance match jumpers on all of the volume controls in the system to the same position (1X, 2X, 4X, 8X or 16X). See
Figure 1
below.
Figure 1
jumper set to 2X
RBH does not recommend installing more than 8 volume controls in parallel. RBH also does not recommend installing more
than two (2) 8 Ohm speakers per channel on each volume control without additional impedance protection.
PLEASE NOTE: High impedance match setting’s affect on volume
Setting the impedance match jumpers higher than 1X will yield less power per pair of speakers. For example: An amplifier rated at 100
Watts per channel RMS into 8 Ohms is to be used for 8 pairs of speakers. In order to accommodate 8 pairs of 8 Ohm speakers, an 8X
impedance match setting must be used. Therefore, this will limit the 100 Watts of power to 12.5 Watts for each speaker pair, or
one-eighth of the amplifier’s power.
Figure 3
Number of pairs of 8 Ohm speakers
Number o
f pair
s o
f
4 Ohm speak
er
s
Figure 2
Number of pairs of 8 Ohm speakers
Number o
f pair
s o
f
4 Ohm speak
er
s
AMPLIFIER IS STABLE TO 4 OHMS
AMPLIFIER IS STABLE TO 8 OHMS
WARNING!
Make sure to set the impedance
match jumpers on all of the volume
controls in the system to the same
position, otherwise serious
amplifier
damage may occur
.
NOTICE!
Make sure to set both impedance
match jumpers on the volume
control to the same position.
For assistance, please call 800-543-2205 or visit http://www.rbhsound.com.
