VLC-100W
STEREO VOLUME CONTROL
Redefining the way
you experience sound.™
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.
WARNING!
NOTICE!
Make sure to set both impedance
match jumpers on the volume
control to the same position.
jumper set to 2X
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.
Figure 1
AMPLIFIER IS STABLE TO 4 OHMS
AMPLIFIER IS STABLE TO 8 OHMS
Number of pairs of 8 Ohm speakers
Number of pairs of
4 Ohm speakers
Number of pairs of
4 Ohm speakers
Number of pairs of 8 Ohm speakers
Figure 2
Figure 3
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.
For assistance, please call 800-543-2205 or visit http://www.rbhsound.com.
STEP 2: MOUNTING THE ENCLOSURE
Every outdoor/exterior mounting situation may differ, and it is impossible to describe every
one. Please use the following few steps as a general guide for mounting this volume control:
1.) If conduit is to be used, run the necessary wiring up through the conduit and into the
opening at the base of the enclosure. RBH recommends labelling the wires for future reference.
2.) Mount the enclosure onto the PVC conduit using the necessary adhesive.
3.) Use the four holes in the back sides of unit to secure the enclosure to a stationary object
or wall.
STEP 3: WIRING
Figure 4
3/
4” PVC conduit connection
3/
16” Mounting hole x 4 holes
1.) Strip 1/4” to 3/8” of the insulation from the end of
each wire and tightly twist the end of each wire until no
frayed ends remain.
2.) Insert each wire from the amplifier into the proper
L+, L-, R+ or R- input terminal and use a small screwdriver
to tighten each screw; see Figure 4. Make sure to
observe proper polarity for each connection.
3.) Insert each wire from the speakers into the proper
L+, L-, R+ or R- output terminal and use a small screwdriver
to tighten each screw; see Figure 4. Make sure to
observe proper polarity for each connection.
4.) Insert both input and output terminals into the
proper locations on the volume control; see Figure 5.
Figure 5
Wiring Diagram
STEP 4: INSTALLING VOLUME CONTROL IN ENCLOSURE
1.) Insert Volume Control into
enclosure.
2.) Use two of the supplied
screws to fasten the Volume
Control to the enclosure.
3.) Place the cover plate over
the enclosure. Make sure the
plastic/rubber gasket is in place
behind the cover plate.
4.) Use four of the supplied
screws to fasten the cover plate
to the enclosure.
5.) Place the control knob onto
the volume control post.
Technical Specifications
Audio Power Handling: 40 Watts continuous (RMS)/100 Watts maximum
Frequency Response: 25Hz — 20kHz
Switch: 12 position rotary (including ‘Off’)
Wiring Requirements: 14-16 gauge wire. Input & Output (separate):
Two separate two-conductor speaker wires, or 1
four-conductor speaker wire.
Mounting: Fits most standard single-gang junction boxes
Impedance Multiplication: 1X, 2X, 4X, 8X & 16X
Unit Dimensions: 37/8”W x 5”H x 4”D (including control knob)
Faceplate Dimensions: 3”W x 43/4”H
Warranty: 25 Years
It is the policy of RBH to continuously incorporate improvements into our products; all specifications are subject to change without notice.
Copyright © 2006, RBH Sound. All Rights Reserved.
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