Knoll VS105 Installation Instructions Manual

Operation: Knoll Systems volume controls are very easy to use. The

VS105 has a total of 12 different volume settings including fully off.
To increase the volume (in this room only), slide the volume control
knob upwards. To lower the volume, slide the volume control knob
downwards.

To set the correct amplifier or receiver volume setting, we
suggest that you turn the VS105 volume control in one room to
maximum. Adjust the amplifier or receiver volume to the loudest
comfortable setting you will use and no further or louder. This way the
VS105 volume control has the most usable settings. If the amp
volume control was set louder, the VS105 volume control would have
to be turned down to be back at a comfortable level allowing less
overall volume positions available.

Warranty

Knoll Systems warrants the VS105 sold in the USA and Canada by authorized
Knoll dealers to be free of defects in materials and workmanship. This warranty
extends for three full years from the date of purchase by the original consumer.
Any products returned to Knoll Systems and found to be defective by Knoll
Systems within the warranty period will be repaired or replaced at Knoll
Systems option, at no charge. Knoll Systems will not be responsible for the
actual cost of installation or removal of the product, nor for any incidental or
consequential damages. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation may not apply to
you. This warranty gives you specific legal rights. You may have additional
legal rights that vary from state-to-state.

Specifications

Peak RMS Power Rating

105 watts per channel

Continuous RMS Power

55 watts per channel

Frequency Response

0 to 500,000 Hz

Mounting Depth

1.6" (41mm)

Electrical Junction Box

Fits single gang

Speaker Impedance

4-16 ohms (single or multiple
speakers)

Connection

Detachable screw terminals

Knoll Systems

145 Tyee Drive Point Roberts, WA 98281 USA
14-7163 Vantage Way, Delta BC V4G 1N1 Canada
Tel: [phone], fax [phone]
www.knollsystems.com

VS105

Non-Impedance Matching
Volume Control Installation Instructions v1.0

Warning: To be installed and/or used in accordance with appropriate

electrical codes and regulations.

Caution: Do not install these keypads in an electrical junction box
with 110V or higher unless an approved barrier separates the high and
low voltage sections.

Description: The Knoll Systems VS105 is a twelve-position in-wall
mountable stereo speaker volume control. One or two pairs of
speakers can be safely driven from one stereo amplifier (with 4 ohm
capability) using an equal number of VS105’s.

The VS105 is the smallest size volume control ever made by Knoll, so
it fits almost everywhere. A rotary switch version is available, model
VC105pm.

 Smallest size high power

volume control ever
made. Only 1.6” deep.

 105 RMS watts per

channel.

 Full frequency response 0

Hz to 500,000 +/- 1 dB.

 Best sound quality

possible because
autoformers are not used.

 Single gang decorator style.
 Detachable screw terminals for 12-24 gauge wire.
 V-pad design doesn’t burn off excessive heat like

L-pads.

Basic System Layout and Pre-Wiring: First, decide where the
speakers and volume controls will be placed in the various rooms.
When wiring always leave excess wire at both ends so installation of
the speakers and volume controls is quick and easy. A single amplifier
can power one or two VS105 volume controls (if the amplifier has 4
ohm capacity). If more volume controls are to be attached to a single
amplifier use model VS105pm volume controls instead or an
impedance matching device.

Run a fire-rated two-conductor speaker wire (14-18 gauge wire) from
each speaker to the volume control location in each room. Next, run a
four-conductor speaker wire from the volume control to the amplifier
location. Ideally each run back to the amplifier is a home run, but
wires can be daisy chained from room to room. If you plan to daisy
chain the wiring we suggest using larger 14-gauge wire. If 2 pairs of
speakers are being controlled by 1 volume control, wire the 2 pairs in
series if they are 4 or 6-ohms and parallel if they are 8 or 16-ohms.
Find information on how to wire in series and parallel on our website
www.knollsystems.com.

Warning: Never attempt to make the final combined speaker
impedance less than 4-ohms as this may cause safety issues.

To make final trim-out quicker, the detachable connectors with the
VS105 can be added to the wires now. They are available in bulk packs
without the volume controls from Knoll Systems.

Maximum number of VS105 that can be parallel wired to an
amplifier or receiver

Amplifier’s

speaker rating
in ohms

1-8 or
1-16

2-8 or
2-16

4-8 or
4-16

6-8 or
6-16

8 or
8-16

Maximum
number of
VS105’s

8 4 1 2 1

Connection and trim-out: Remove both four position speaker

connectors. Remove about ¼” of insulation from the ends of all wires
connected to the volume control and twist the exposed strands.

Warning: The VS105 is rated for use with
maximum 105 watt per channel amplifiers.
DO NOT use higher-powered amplifiers with

this product for safety reasons.

The stereo amplifier or receiver outputs (left and right) are connected
to the VS105 connector portion labeled “FROM AMP” on the volume
control. Be very careful to observe the correct polarity. The VS105
uses independent floating grounds so bridged amplifiers can be used
safely.

Wire from the amplifier speaker terminals is always wired in parallel to
all VS105 volume controls. To make the installation look neat and tidy,
we suggest using a WT6 connection strip. When connecting to the
amplifier check to make sure its power is switched off. Again strictly
observe wiring polarity.

Connect the wires from the stereo speakers to the connector portion
labeled “TO SPEAKERS” on the volume control. Again, series and
parallel speaker wiring is acceptable so that the impedance the volume
control receives is between 4 and 8 ohms. Checking complicated
speaker wiring with an ohmmeter is a good idea. Some speakers have
blocking capacitors and a dc ohmmeter will not be give correct
readings. Be sure to strictly observe polarity, as incorrect polarity will
result in poor bass performance.

When installing the volume control into the wall, we suggest moving
any inside wall fixtures, such as vapor barriers and insulation away
from the volume control if possible.

To change the color of the plate and knob, start by removing the
plate and knob together. Choose the desired color plate and knob. If
the knob is not in the plate insert it by rotating it into the plate. Make
sure the knob is not upside
down. Put the black slider
on the volume control in
the lowest volume position.
Move the knob in the plate
to the lowest volume
position. Attach the plate to
the volume control with the
bottom alignment tabs
inserted first. Snap the rest
of the plate on and test to
make sure it works
correctly.

Note: This product may
contain trace amounts of
lead that some states have

VS105pm

Metal plate

Plastic
Plate

Control
shaft

Knob

TO AMP
+R- -L+

TO SPEAKERS

+R- -L+