Niles Audio Stereo System HDL 4 User Manual

INSTALLATION & OPERATION GUIDE  
WMVC100  
WMVC100E  
Weatherproof Muting Stereo Volume Controls  
Niles Audio Corporation  
©2003 Niles Audio Corporation. All rights reserved. Niles, the Niles logo, and Blending High Fidelity and Architecture are reg-  
istered trademarks of Niles Audio Corporation. Decora is a registered trademark of Leviton Manufacturing. All other trademarks  
are the property of their respective owners. Some of Niles products (or components thereof) are manufactured under one or more  
U.S. Patents, foreign equivalents and/or pending patents (see product for details). Because we constantly strive to improve our  
products, Niles reserves the right to change product specifications, descriptions, and prices without notice. The technical and  
other specifications of information contained herein is not intended to set forth all technical and other specifications of Niles  
China 7/03 DS00318ACN  
12331 S.W. 130 Street  
Miami, Florida 33186  
Tel: (305) 238-4373  
Fax: (305) 238-0185  
®
B L E N D I N G H I G H F I D E L I T Y A N D A R C H I T E C T U R E  
Download from Www.Somanuals.com. All Manuals Search And Download.  
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
• Isolated left- and right-channel grounds ensure safety with  
any amplifier.  
CAUTION! Every speaker pair in  
the system must be connected  
to an impedance-magnifying  
volume control and set to the  
same magnification.  
In a typical application of  
IM volume controls,  
reduce your maximum volume substantially. To solve this prob-  
lem, specify a speaker selector with a defeatable protection  
circuit (Niles models HDL-4, HDL-6, SPS-4, or SPS-6). Then  
keep the protection circuit off at all times.  
TOOLS REQUIRED  
a
12 AWG  
14 AWG  
system has eight pairs of  
8-ohm speakers through-  
out the house. Each pair of  
speakers is connected to  
an IM volume control with  
its switches set for 8x.  
• May be used with 4-, 6-, or 8-ohm speaker systems.  
• Ideal for home and commercial sound installations.  
• 1/8" Standard  
Slotted Screwdriver  
JUNCTION BOXES  
TECH TIP  
1. Count the number of pairs of  
4-ohm speakers and the number  
of pairs of 8-ohm speakers you  
are connecting. Count pairs of  
6-ohm speakers as 4-ohm pairs.  
• 1/4" Standard  
Slotted Screwdriver  
Wire size is expressed by its  
AWG (American Wire Gauge)  
number. The lower the AWG  
number, the larger the wire.  
Thus, 12 AWG wire is physically  
larger than 14 AWG.  
• UL-rated to comply with all local building codes.  
• Installation requires only a screwdriver and wire stripper.  
• Power handling: 100W/channel RMS.  
WMVC 100: The mounting depth of the MVC 100 is 2-9/16".  
When installed, the unit extends 2-1/16" behind the sheetrock  
wall (assuming 1/2" sheetrock). For installation, use a standard  
18-cubic-inch (or larger) junction box. Suitable junction  
boxes are available from your Niles dealer or local electrical-  
supply company.  
With eight pairs of speak-  
ers, one-eighth of the  
amplifier’s power is avail-  
able to any pair. Therefore, an amplifier rated at 100W per  
channel RMS into 8 ohms will deliver up to 12.5W to each of  
the eight pairs – whether you play all eight pairs or just one pair.  
This translates into a drop in the maximum volume capability  
of about 9dB at the 8x setting.  
• Wire Stripper  
2. Determine whether the amplifier should see a 4-ohm load or  
an 8-ohm load. You should find this information in the  
owner’s manual of the amplifier.  
• Frequency response: 20Hz to 20kHz 1.5dB.  
WMVC 100: Available colors: Bone and White.  
• 10 years parts and labor warranty.  
WMVC 100E: Use the PVC junction box (supplied), mounted  
atop a PVC conduit through which the wires will run.  
3. Read the correct switch position from the charts on the next  
page. See Figure 3 if your amplifier can drive a 4-ohm  
load. See Figure 4 if your amplifier must have an 8-ohm  
speaker load.  
TYPE OF SPEAKER WIRE  
INSTALLATION CONSIDERATIONS  
USING SPEAKER SELECTORS WITH IM VOLUME  
CONTROLS  
We recommend 16-gauge stranded copper speaker wire for  
most connections, and 14-gauge wire for runs longer than 80  
feet. Don’t use speaker wire larger than 14 gauge, because larg-  
er wire may not fit into the connectors. Never use solid-core,  
aluminum, or Romex wire with an IM volume control. For  
speaker-wire runs within walls, most U.S. states and munici-  
palities require a special type of speaker wire with a specific CL  
fire rating, such as CL-2 or CL-3. Consult your Niles dealer,  
building contractor, or local building-inspection department if  
you aren’t sure what kind of wire is best for your application.  
Calculating the Impedance Magnification Setting  
4. Set the switches on all of the controls to the same position  
(1x, 2x, 4x, or 8x).  
Although IM controls provide volume and on/off at the volume-  
control location, they do not give you central control of speak-  
ers playing throughout the house.  
Use the following instructions and the accompanying charts to  
select the correct switch setting for the number and type of  
speakers in your system.  
Limitations in Volume with High Magnification Settings  
Speaker-selection systems give you central control, but some  
speaker selectors have non-defeatable impedance-protection  
circuits. Combining IM controls with such a selector will  
Using an 8x setting limits the power to each speaker pair to  
one-eighth of the amplifier’s output.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
3
4
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
Receiver  
power to operate the muting function of the volume control.  
Therefore, two conductor power wire must be run to each vol-  
ume control location along with four conductor speaker wire.  
3. Use a small flathead screw-  
driver or your thumbnail to  
raise the locking tabs,  
exposing the holes on the  
removable connector plug.  
6. Set the Impedance Magnification Switch (See Figure 6) as  
MOUNTING LOCATION  
12VDC  
determined by the IM charts (Figures 3 and 4).  
WMVC 100: Convenient mounting locations include:  
7. Plug the connectors into the volume control as shown in  
Figure 5. The inputs of the IM volume control are the con-  
nector pins labeled AMPLIFIER. The outputs are the connec-  
tor pins labeled SPEAKERS.  
MVC HUB4  
• On a porch or patio wall.  
• Near doorways.  
• Close to a telephone.  
WMVC 100: Before you install the WMVC 100 into an exist-  
ing wall, consider the possibility of hidden obstructions inside  
the wall, such as wood and metal studs; electrical, telephone,  
or other wiring; plumbing; and conduit.  
4. Insert each wire into the  
appropriate hole on the  
removable connector plug,  
and snap the locking  
tab down.  
WMVC 100E: Convenient mounting locations include:  
NOTE: If you reverse these connections, the volume control  
won’t function properly .  
1. Install the junction box in the usual manner.  
• At poolside.  
• Near a hot tub.  
• Near a barbecue.  
2. Run all necessary wiring to the volume control. Label the  
wires for future reference.  
8. Connect the power-supply wiring between the volume  
control and the Niles MVC HUB4 Speaker/ Power Hub.  
NOTE: Maintain proper phas-  
ing. Connect the positive  
terminals on the volume con-  
trol to the positive terminals  
on the amplifier and speakers,  
WMVC 100E:  
Some states or municipalities allow installation of devices such  
as the MVC 100 in the same junction box as 110V devices, with  
a low-voltage partition between the devices. We do not rec-  
ommend this, because speaker wires can act as an antenna for  
electrical noise. Locating speaker wires too close to a light  
switch or dimmer may cause the speakers to emit a popping or  
buzzing sound. If you must locate the IM volume control near  
electrical devices, install it in a separate metal junction box,  
ground the box to the electrical-system ground, and route the  
speaker wires several feet away from the electrical wiring.  
Speakers  
9. Secure the volume control to the  
junction box. Insert the 1-1/4"  
device screws into the oblong  
screw holes on the top and bottom  
of the volume control. The oblong  
shape of the screw holes helps you  
Figure 1  
1. Run the necessary wiring up through the conduit and the  
opening at the base of the enclosure. Label the wires for  
future reference.  
Wiring Diagram  
and connect the negative terminals on the volume control to  
the negative terminals on the amplifier and speakers. To help  
you avoid improper phasing, the connector plug is keyed.  
Insert the smooth side of the connector plug into the smooth  
side of the socket. Don’t force the scalloped side of the con-  
nector plug into the smooth side of the socket. See Figure 5.  
2. Mount the entire enclosure atop the PVC conduit.  
place the volume control in  
a
vertical position. Align the screws  
with the threaded holes in the  
junction box. Tighten the screws  
using a Phillips screwdriver. DO  
NOT OVERTIGHTEN. If necessary,  
INSTALLATION  
Figure 2  
Loosening the  
Screws for a Flush Fit  
1. Locate the 4 pin speaker wire connector plugs (and remove them  
if they are plugged in). See Figure 5.  
5. Locate the 2 pin voltage connector (see Figure 7). Strip 1/4"  
of insulation from the end of each wire. Tightly twist the end  
of each wire until no frayed ends remain and insert each  
wire into the appropriate hole on the connector. Use a small  
flathead screwdriver to tighten the screws in place.  
PREPARING FOR INSTALLATION  
2. Strip 1/4" of insulation from the end of each wire. Tightly  
twist the end of each wire until no frayed ends remain.  
loosen these screws several turns so the volume control fits  
flush with the faceplate.  
NOTE: The WMVC 100 and WMV 100E require 12VDC  
Download from Www.Somanuals.com. All Manuals Search And Download.  
5
6
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
10. Set the rubber gasket inside the faceplate and be sure it is  
seated properly.  
volume capability. Reduce the volume at once to avoid  
damaging your speakers.  
AMPLIFIER’S MINIMUM SPEAKER LOAD IS 4 OHMS  
8 OHM Speaker Pairs  
AMPLIFIER S MINIMUM SPEAKER  
LOAD IS 8 OHMS  
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16  
11. Use the shorter plate screws to fasten the gasketed faceplate  
to the volume control. DON’T OVERTIGHTEN THE PLATE  
SCREWS, WHICH COULD DAMAGE THE FACEPLATE.  
Align all the screws in the same direction for a clean,  
finished look.  
6. Use the volume control to adjust the volume of the speakers  
to the desired listening level. If all the speaker pairs in your  
system are equipped with Niles volume controls, you can  
leave the amplifier or receiver volume set at one position  
and use the Niles controls exclusively.  
2
3
4
4x  
5
6
7
8
0
1
2
3
4
5
6
7
8
0
1
2
3
4
1x  
2x  
4 OHM  
Speaker  
Pairs  
4x  
4x  
4x  
8x  
4 OHM  
Speaker  
Pairs  
7. To mute the speakers without adjusting the volume control,  
press the mute button.  
OPERATION  
1. Make sure the amplifier or receiver power is OFF and set the  
volume to minimum.  
Figure 4  
Figure 3  
8. To unmute speakers that have been muted, press the mute  
button again.  
2. Set the volume on the volume control to maximum (fully  
clockwise).  
PROGRAMMING CAPABILITY  
3. If you are using a Niles speaker-selection system, locate the  
ON/OFF button that corresponds to the speaker pair you  
wish to play. Set it to the ON position. Make sure the defeat-  
able protection circuit is not enabled. See Using Speaker  
Selectors with IM Volume Controls, on page 4.  
You can program individual WMVC 100 and WMVC 100E  
Muting Volume Controls attached to an MVC HUB4, allowing  
certain locations (such as the guest bedroom and porch) to  
remain muted when system activation turns on other locations  
(such as the kitchen and family room).  
4. Turn ON the amplifier or receiver and select a source, such  
as the tuner or CD player.  
To program a WMVC 100 or WMVC 100E for automatic  
muting or unmuting, press and hold the mute button for  
10 seconds. An LED blinks to indicate that programming  
has occurred.  
5. Slowly turn up the amplifier or receiver volume and set it to  
a comfortable – not maximum – listening level. Don’t over-  
drive or "clip" your amplifier. If the sound becomes muddy  
or distorted, you have reached the limit of your amplifier’s  
The WMVC 100 and WMVC 100E come from the factory pre-  
programmed in the automatic mute mode.  
Figure 7  
Figure 5  
Figure 6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
7
8
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
W
E
A T  
H
E
R
P
R
O
O
F
M
U
T
I
N
G
S
T
E
R
E
O
V
O
L
U
M
E
C
O
N
T
R
O
L
S
d
CONTENTS  
SPECIFICATIONS  
Audio Power Handling  
100W/channel RMS  
200W/channel peak music power  
WMVC 100  
c
e
• WMVC100 volume control  
• Standard wallplate  
• Knob  
• Device mounting screws X2  
• Faceplate screws X2  
Mounting  
b
WMVC 100: In-wall, fits into most 18-cubic-inch single-gang  
junction boxes at least 2-3/4" deep  
• Removable speaker connector X2  
• Gasket  
WMVC 100  
d
WMVC 100E: Enclosed in a PVC junction box (supplied)  
Wiring Requirements  
14-18 gauge, two individual runs of two-conductor speaker  
wire, or one run of four-conductor speaker wire.  
WMVC 100E  
c
a
• WMVC100E Volume Control  
• Knob  
• Device mounting screws X2  
• Removable speaker connector X2  
• Standard Faceplate screws X4  
• Enclosure X1  
Unit Dimensions  
1-5/8" wide x 2-5/8" high  
b
Faceplate Dimensions  
WMVC 100: Faceplate: 2-3/4" wide x 4-1/2" high  
WMVC 100E  
• Gasket  
(a) Knob  
(b) Faceplate  
(c) Gasket  
(d) Volume Control  
(e) Enclosure  
Depth Behind Faceplate  
2-9/16"  
a
Figure 8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
9
10  

MSi Computer Hardware MS 6590 User Manual
Murphy Automobile Parts A88 User Manual
Murray Snow Blower 629108x84B User Manual
Nady Systems Portable Speaker WA120 User Manual
Nexus 21 Boating Equipment Depth TH 52 User Manual
Nikon Camera Accessories EN EL4a User Manual
Oki Printer ML591 User Manual
Omega Thermometer DP26 RTD User Manual
Omnimount TV Mount NC125C User Manual
Panasonic Network Card 2SC3938G User Manual