Sonance Stereo Amplifier VC30RIM User Manual

I N S T R U C T I O N M A N U A L  
V C 3 0 R I M I M P E D A N C E - M U L T I P L Y I N G  
V O L U M E  
C O N T R O L  
IMPORTANT: Do not reverse the “Input” and “Output” connectors or the  
volume control will not operate properly.  
INTRODUCTION  
The VC30RIM is an impedance-multiplying stereo volume control that  
features 12 control positions, soft-touch action and silent switching  
capability. The VC30RIM incorporates a rotary control and can be safely used  
with amplifiers that deliver up to 30 watts RMS per channel.  
5. Connect only 1 pair of speakers to each volume control. Connect multiple  
volume controls to the amplifier’s speaker terminals in parallel  
(see illustration, below).  
When properly implemented, the Sonance VC30RIM allows the safe use of  
multiple pairs of speakers with amplifiers not specifically-designed to run the  
low-impedance loads presented by multiple speakers. Adjustable impedance  
jumpers allow as many as 8 pairs of 8-ohm speakers (or 4 pairs of 4-ohm  
speakers) to be driven by a single 8-ohm capable amplifier.  
Amplifier/Receiver  
SPEAKER OUTPUT  
L
R
+
+
APPLICATIONS  
The VC30RIM is designed to have a single pair of speakers connected to a  
single volume control. Its impedance-multiplying feature allows multiple  
volume control/speaker sets to be safely used with a single amplifier. The  
included adjustable impedance jumpers can be set to accommodate different  
total numbers of speaker/volume control sets.  
L + L – R – R +  
I N P U T  
L + L – R –  
I N R P + U T  
VC30RIM  
I M P E D A N C E  
M U L T I P L Y I N G  
VOLUME CONTROL  
A M P L I F I E R  
A M P L I F I E R  
®
®
VC30RIM  
30W rms MAX Input/Ch  
Two-8Ω Speakers  
VC30RIM  
30W rms MAX Input/Ch  
Two-8Ω Speakers  
Important Note: This volume control is intended for use primarily in  
background music systems. The impedance jumpers increase the  
impedance seen by the amplifier, which reduces the amount of power  
reaching each pair of speakers, reducing the speaker’s overall output  
capability. The more speakers being driven by a single amplifier  
through VC30RIM controls, the higher the impedance jumpers must  
be set and the lower the amount of power that will reach each speaker.  
Operating multiple sets of speakers through VC30RIM controls with  
jumpers set lower than recommended in order to increase the system’s  
output capability can severely damage the amplifier.  
SPEAKERS  
SPEAKERS  
O
U
T
P
U
T
O
U
T
P
U
T
R+ R– L– L+  
R+ R– L– L+  
If the system will include a pair of speakers intended for dedicated  
higher-volume music listening, we strongly recommend that those  
speakers be powered directly by a dedicated amplifier through a VC30R  
or VC60R standard volume control.  
Left  
Right  
Left  
Speaker  
Right  
Sonance • 212 Avenida Fabricante • San Clemente, CA 92672-7531, USA  
(800) 582-7777 or (949) 492-7777 • FAX: (949) 361-5151  
Technical Support: (800) 582-0772  
Speaker  
Speaker  
Speaker  
INSTRUCTION  
M A N U A L  
MOUNTING  
w w w . s o n a n c e . c o m  
IMPORTANT: Do NOT install the volume control in the same electrical box as  
AC house wiring, a light switch or any other high-voltage device or control. The  
volume control can share gang boxes with other low-voltage controls such as  
A/B speaker switches, infrared receivers, and line-level audio or video devices if  
these other devices are rated as Class 2 devices according to the National  
Electrical Code.  
CONNECTIONS  
©2005 Dana Innovations. All rights reserved.  
Sonance is a trademark of Dana Innovations.  
Decora is a registered trademark of Leviton Manufacturing Co., Inc.  
WARNING: Turn the amplifier’s power OFF until you have completed all of the  
connections and have determined that they are correct. (If the amp’s AC plug is  
accessible we recommend that you unplug it from the wall outlet to avoid acci-  
dental turn-on and possible damage to the amplifier or speakers.)  
33-1541 11/05  
The VC30RIM has removable 4-pin screw connectors that simplify  
connecting the speakers and amplifier.  
Use the included hardware to mount the volume control in a single or double  
J-box as shown below. (Do not over-tighten the screws.) Attach your choice of  
the included Decora® or standard hardware.  
1. Bring the wires from the speakers and amp through a backless J-box.  
Note: If you are installing the volume control into a typical plastic J-box you will  
have to remove the J-box’s back panel to accommodate the control.  
2. Insert the speaker wires as shown into the holes in the 4-pin screw connec-  
tors. Make sure to insert the ‘+’ and ‘–’ leads into the correct holes  
(see illustration, below).  
Volume  
Control  
Decora  
Standard  
Hardware  
Important: Make sure there are no  
FROM AMPLIFIER T O S P E A K E R S  
Hardware  
stray wires that can touch each  
other. Touching wires can cause a  
short-circuit that can damage the  
amplifier.  
O U T P U T  
L+ L– R– R+  
I N P U T  
R+ R– L– L+  
Note: The connectors can accommo-  
date wire as large as 14 gauge.  
Backless  
J-Box  
3. Using a small flat-blade screw-  
driver, tighten the screws to  
secure the wires in the connector.  
4. Press the 4-pin screw connectors  
into the corresponding speaker  
terminals on the volume control  
until they lock into place.  
4
1
 

Sharp Projector XV Z10000 User Manual
Shindaiwa Edger M254 User Manual
Snapper Lawn Aerator 4547 User Manual
Sony Clock Radio ICF CD873 User Manual
Sony Marine Lighting DK32 User Manual
Sony MP3 Player DPF D75 User Manual
Sprint Nextel Telephone 900MHz Digital Cordless Phone with Call Waiting User Manual
SPX Cooling Technologies Humidifier MCR3100 User Manual
SunBriteTV Car Satellite TV System SB 5517HD User Manual
Sylvania TV VCR Combo SSC091 User Manual