VMS300
OSD
VMS-300 Slider
A U D I O
Find out the minimum impedance of the amplifier. This
1.
Impedance Matching Slider Stereo Volume Control
information may be found in the manual or on the back of
amplifier, near the speaker terminals. It is measured in
ohms.
2.
Figure out the total number of speaker pairs to be used.
Determine the correct switch setting using the chart
3.
below.
Set the switch. Make sure that each volume control’s
4.
switch setting is consistent throughout the whole system.
No. of 8 ohm pairs
Switch Settings
Output
Input
1-2
2x 4x
To prevent from overloading
and damaging the amplifier,
the switch must be set
correctly to match the
impedance of the speaker
system to a level equal to or
greater than the impedance
of the amplifier.
OUTPUT
3-4
L+ L- R- R +
L+ L- R- R +
INPUT
2x 4x 8x 16x
5-8 9-16
8x
16x
Installation Instruction for the VMS-300
The VMS-300 is simple to install. Pay attention to the following steps:
1.
2.
Make sure to use the integral strain reliefs where appropriate when
routing the cable in the J-box.
Mark the input and output cables accordingly for easy installation.
RECEI VER/AMP LIFIER
SPEAK ER OUTP UTS
L+ L- R- R +
3.
Strip the insulation off the end of each of the eight individual wires
4.
( four from the amplifier and four to the speakers ) at about 1/4”.
Twist exposed ends together.
L+ L- R - R +
INPUT
2x 4x 8x 16x
L+ L- R - R +
OUTPUT
L+ L- R - R +
INPUT
5.
2x 4x 8x 16x
L+ L- R - R +
OUTPUT
Connect the leads from amplifier to the volume control connector
according to the labeled Input L [ + , - ] and R [ + , - ].
6.
Connect the speakers wires to the connector labeled Output
L [ + , - ] and R [ + , - ]. Speaker wires typically use the
following color configuration.
- Red/Black = right speaker Red = positive [ + ] Black = ground [ - ]
- White/Green = left speaker White = positive [ + ] Green = ground [ - ]
Insert the volume control into the J-box. Mount carefully, making
7.
sure that no wires are pinched or shorted.
OSD Audio Limited Warranty
OSD Audio will repair or replace any defect in material or workmanship which occurs during normal use of this product with new or rebuilt parts,
free of charge in the USA, for five years from the date of original purchase. This warranty does not cover damages in shipment, failures caused by
other products not supplied by OSD Audio or failures due to accident, misuse, or alteration of the equipment. This warranty is extended only to the
original purchaser, and a purchase receipt, invoice, or other proof or original purchase date will be required before warranty repairs are provided.
Mail in service can be obtained during the warranty period by emailing RMA@osdaudio.com. A Return Authorization (RMA) number must be
obtained in advance and be marked on the outside of the shipping carton.
This warranty gives you specific legal rights, and may have other rights ( which vary from state to state ). If a problem with this product develops
during or after the warranty period please contact OSD Audio, your dealer, or any factory-authorized service center.
OSD AUDIO • 1405 Pioneer Street • Brea • CA 92821 • www.osdaudio.com
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