Operation: Knoll volume controls are very easy to use. The VS150im 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 Knoll room 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 Knoll volume control has the most usable settings. If the amp volume control was set louder, the Knoll volume control would have to be turned down to be back at a comfortable level with less overall volume positions available.

Warranty

Knoll Systems warrants the VS150im 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

150-watts per channel

Continuous RMS Power

75-watts per channel

Frequency Response

20 to 20,000 Hz

Mounting Depth

2.25" (5.7cm)

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: (604) 940-1689, fax (855) 734-3363 www.knollsystems.com

VS150im

Impedance Matching Volume Control

Installation Instructions v1.3

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 VS150im is a twelve-position in-wall mountable stereo speaker volume control with impedance matching capability. From one to sixteen pairs of speakers can be safely driven from one stereo amplifier using an equal number of VS150im’s. Separate impedance matching components are not required. The Knoll WT6 one stereo input to six stereo output connection strip is available to neaten the wiring of larger systems.

A rotary switch version is available, model VC150im.

Basic System Layout and Pre-Wiring: A stereo amplifier controls multiple pairs of speakers. Decide where the speakers and volume controls will be placed in the various rooms. When wiring always leave an extra couple of feet of wire at both ends so installation of the speakers and volume controls is quick and easy. Up to 16 pairs of 8- ohm speakers can be safely connected to one amplifier. (8 pairs of 4- ohm speakers).

Run a fire-ratedtwo-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. Our web site has information on how to wire in series and parallel.

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 VS150im can be added to the wires now. They are available in bulk packs without the volume controls from Knoll.

To tidy up the installation, use Knoll’s WT6 seven position wire connection strip at the amplifier. Two or more may be required for some installations.

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Knoll Systems VS150IM warranty VS150im