GSZ67
GSZ67
12 Channel Eco-System™
Controller-Amplifier
Installation Instructions v1.3
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Important Safety Instructions:
1) Read these instructions.
2) Keep these instructions.
3) Read all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has
two blades with one wider than the other. A grounding type plug has two blades and a third
grounding prong. The wide blade or the third prongs are provided for your safety. If the provided
plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10) Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
11) Only use attachments/accessories specified by the manufacturer.
12) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13) Unplug this apparatus during lightning storms or when unused for long periods of time.
14) Refer all servicing to qualified service personnel. Servicing is required when the apparatus
has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.
15).Under no circumstances should the output terminals of the amplifier be short-circuited.
16).Be sure that the loudspeakers connected can handle the output power of the amplifier at the
loudspeakers rated impedance. The warranty on the amplifier does not cover damage to
loudspeakers that have inadequate power handling capabilities.
17) A push button is used to turn the power off and on.
18) When the front panel push button switch is in the in position the apparatus is powered on.
CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce
the risk of electric shock do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so.
Note: The apparatus shall be connected a mains socket outlet with a protective earthing
connection.
Note: Where the mains plug or an appliance cover is used as the disconnect devise, the
disconnect devise shall remain readily operable.
WARNING: This product contains chemicals, including lead, known to the State of California to
cause birth defects or other reproductive harm. Wash hands after handling.
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FCC Warning
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Canada
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
Caution: To reduce the risk of electrical shock, do not remove the cover (or back).
No user serviceable parts inside. Refer to qualified service personnel.
Warning: To reduce the risk of fire or electric shock, do not expose this appliance to
rain or moisture.
The lightning flash with arrowhead, within an equilateral triangle, is
intended to alert the user to the presence of uninsulated “dangerous
voltage” within the products that may be of sufficient magnitude to
constitute a risk of electrical shock to persons.
The exclamation point within an equilateral triangle is intended to alert
the user to the presence of important operation maintenance (servicing)
instructions in the literature accompanying the appliance.
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Note: It is very important to use a top quality
RJ45 8/8 crimper tool. We strongly suggest
using a cat 5 / RJ45 electronic tester to verify
the wire conductors.
Introduction:
controller amplifier and congratulations on your choice. The GSZ67 features
six deluxe digital volume controlled stereo amplifiers with individual seven
source selection. This is Knoll's third generation of multi-channel, high-quality
power amplifiers. The GSZ67 is designed to meet the amplifier needs of
custom installed multi-zone systems where high quality sound is a specific
requirement.
Each of the six zones or rooms can select any of the seven inputs, with
individual volume control, bass, treble and balance. Extras such as an
external voltage trigger that can turn source equipment on and off, individual
zone infrared outputs, a fully balanced paging override, RS232 control, fully
buffered line level outputs and many more features give the GSZ67
exceptional value when installed in homes and large complex systems. Except
for the power button all controls are rear mounted. A data port is provided for
ganging multiple GSZ67's. Infrared signals can be relayed from the keypads
to the source equipment.
The GSZ67 is normally controlled by MR164 LCD keypads with or without
Knoll remote controls or RS232 commands from whole house controllers. The
paging override is normally used for whole house announcements or doorbell
chimes.
Seven input source selection. Each of the six stereo amplifiers is provided
with seven input source selection. Selection, volume level, bass, treble and
balance is made on MR164 keypads, Knoll remote control (or a programmed
remote control) or via an external controller. Rooms can have different
source selections, volumes, etc.
Thank you for your purchase of a Knoll GSZ67 12 channel
Six internal 80 position stereo volume controls. The six zones can each
require a MR164 keypad, RB12 remote control or external controller via
RS232. The keypads are typically mounted in the room with the speakers and
they control amplifier power on/off, volume up/down and mute as well as
source selection.
Cost and size efficiency. The GSZ67 consists of a total of 12 power
amplifiers in one 3-1/2" high enclosure (two rack spaces). Each power
amplifier channel can deliver 50 watts RMS with peaks of 100 watts. Because
of its unique design the GSZ67 delivers exceptional value.
Automatic protection circuitry. Each GSZ67 amplifier channel is
individually and fully protected against low impedance, overheating,
overloading, over voltage and under voltage. The protection circuitry
automatically restores the amplifier channel as soon as its parameter returns
to the safe operating area.
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Individual bass, treble and balance adjustment. Each channel features
adjustments so installers can preset the room for speaker differences and
listener preferences.
External trigger. The GSZ67 can turn on and off source components with
its 12vdc trigger output.
All zone control. The MR164 keypad features all zone control of all off, all
zones to any one source (then set volume at 1/3) and all zones volume up or
down.
GSZ67 includes a quiet thermostat controlled internal fan to increase its
long-term power output capability.
Infrared controller ports. Each zone or room has its own infrared output
jack. An all zone jack is also provided.
Zones 5 and 6 have controlled line level outputs so larger power
amplifiers can be connected to these outputs.
Optional rack mount version. Occupies two rack spaces.
Unpacking:
were specially designed to protect it from the shock and vibration of shipping. We
suggest that you save the carton and packing materials to use if you move, or if the
unit ever needs to be shipped back to us for any reason. Should you discover that
your amplifier has been damaged during shipping, please contact your dealer or
Knoll immediately and request the name of the carrier so a written claim can be
made.
The right to a claim against a public carrier can be forfeited if the
carrier is not notified immediately in writing and if the shipping
carton and packing materials are not available for inspection by the
carrier. Save all packing materials until the claim is settled.
The carton and packing materials used in shipping your new amplifier
GSZ67 placement
During normal home operation the amplifier will become warm. However, there are
instances during high-level playback into low impedance speakers when the amplifier
will become much warmer than normal. To ensure the amplifier’s trouble-free
operation, it is necessary to provide adequate ventilation. Your amplifier should be
kept away from external sources of heat such as radiators and hot-air ducts. The
amplifier should never be placed with other heat-producing components in a cabinet
or enclosure lacking free airflow. Do not stack other components on top of your
amplifier.
Connecting your amplifier
When making connections between any source components and the amplifier, or
when making connections to any speaker, be certain that both the input devices and
the amplifier are turned off. Unplug all equipment before making any connections so
that there will be no unwanted signal transients that can damage equipment or
speakers.
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