Sherbourn Technologies LDS-16.800 Owners manual
Sherbourn
Te c h n o l o g i e s , I n c .
Owner’s Manual
for
Model LDS16/800
Distribution Amplifier
All of us at Sherbourn Technologies thank you for your decision
to purchase one of our amplifiers. We take enormous pride in the
design and manufacturing quality of our products and are confident that your new LDS16/800 will provide you with many years
of enjoyable and trouble-free service. Should you ever have any
need to call upon our services, please feel free to contact us at the
address shown at the end of this manual or you can contact the
dealership from which you purchased the product.
Sherbourn makes a complete line of amplifiers and a 7.1 Preamp/
Processor/Tuner for all kinds of listening pleasure. Whether your
taste is for two channel stereo, multi channel home theater or multi
channel whole house custom installation, there is a Sherbourn product that will be a perfect fit for your needs.
Once again we thank you for your decision to purchase one of our
fine products.
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Safety Instructions
1. Important Safety Instructions! Please read all
the safety and operating instructions shown in this
manual before operating this equipment.
2. The lightening flash within an equilateral triangle
shown above is intended to alert you to the presence of uninsulated ‘dangerous voltage’ within the
product’s enclosure that may be of sufficient magnitude to constitute an electric shock.
3. The exclamation point within an equilateral triangle shown above is intended to alert you to the
presence of important operating and maintenance
(servicing) instructions in the literature accompanying this appliance.
4. Please retain this manual in a safe place for future reference about safety and operating matters.
5. Adhere to all warnings and follow all operating
instructions.
6. Warning: To reduce the risk of fire or electrical
shock, do not expose this equipment to rain or
moisture.
There are no user serviceable parts inside. Refer
servicing to qualified personnel.
7. Caution: To prevent electrical shock do not use
this (polarized) plug with an extension cord, receptacle or other outlet unless the blades can be
fully inserted to prevent blade exposure.
8. For added protection for this product during a
lightening storm or when it is left unattended and
unused for long periods of time, it is recommended
that you unplug the unit from the wall outlet. This
will prevent damage to the product due to lightening or power line surges.
9. Do not use attachments not recommended in this
owner’s manual as they may cause hazards.
10. Locate the equipment for proper ventilation.
For example, the product should never be allowed
to operate while positioned on a bed, rug, sofa or
any such surface where proper ventilation is not possible. Nor should the unit be placed in a built-in
installation such as a cabinet or armoire, etc. in such
a way as to impede the air flow . Always ensure adequate ventilation openings - please see later comments regarding such an installation.
11. Locate the product away from heat sources such
as stoves, heat registers, radiators or other appliances
including other amplifiers that produce heat.
12. Mount the equipment in a wall or cabinet only
as described in this owner’s manual.
13. Do not use the equipment near water; for example near a bathtub, washbowl, kitchen sink, a
swimming pool, a wet basement, etc.
14. Do not place the product on an unstable cart,
stand tripod, bracket or table. The equipment is
heavy and should it fall, it could cause serious injury to a person and/or serious damage to the equipment.
Caution For Installation
1. Your Sherbourn amplifier can be placed on any
table or shelf. It can also be custom installed in a
rack, and/or in a piece of cabinetry or furniture of
your choice. It is however, important that if the amplifier is going to be housed in an enclosed environment, that you allow for adequate ventilation. Despite the adequately sized heatsinks built into the
amplifier, it is still important that good ventilation
be provided. Do not install the amplifier directly
above another heat generating component such as
another amplifier without adequate ventilation.
2. If your amplifier is going to be placed in an enclosed space such as an armoire, it is essential that
adequate ventilation be provided. W e strongly suggest that the shelf on which the product is being
placed includes a cutout of at least twenty inches by
twelve inches (50 cm by 30 cm) directly under the
ventilation slots on the bottom of the amplifier. A
similarly sized cutout should be made in the upper
or rear wall behind the shelf so that free air can flow
from beneath the unit to the outside atmosphere. Also
allow a minimum of three inches (7.5 cm) free space
above the product and two inches (5 cm) on either
side of the product. This combination of space will
allow for a free flow of circulating air to help keep
the amplifier from overheating. If your cabinet includes a number of products, it may be advisable to
install a quiet fan to assist the cooling process.
3. The dealership from which you purchased the
product is an expert on custom installation procedures and can provide invaluable advice to help you
make an aesthetically pleasing and trouble free installation.
2
Caution For Connections
1. Connect this equipment only to the type of AC
power source as marked on the unit. Always route
AC power cords so they are not likely to be walked
on, or tripped over, or where they may be pinched
by items placed on or against them. Always pay
particular attention to cords at plugs and/or convenience receptacles, and at the point where they exit
from the product.
2. Do not defeat the inherent design features of the
polarized plug. Non polarized line cord adapters
will defeat the safety provided by the polarized AC
plug. If the plug should fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type plug.
If you use this product in a country which only has
two slotted receptacles in the house, you must use a
three-pin adapter plug to earth ground which is the
“E” (earth pin) of the power cord connected to this
product.
Care of the Product
Clean the product by dusting with a dry cloth. Do
not permit objects of any kind to be pushed and/or
fall into the product through the enclosure openings.
Front Panel Description
The front panel houses the main Power ON/OFF
switch. A blue LED will illuminate when the
LDS16/800 is ON and will remain illuminated regardless of the ‘Standby’ mode of any of the six individual stereo amplifiers; the LED will only extinguish once the Power ON/OFF switch is in the OFF
position or when the LDS16/800 is disconnected
from its electrical outlet.
Rear Panel Connections
The LDS16/800 has been designed to provide multiple stereo zones with identical performance and
features. The following descriptions apply to all
zones.
3. Do not overload wall outlets, extension or integral convenience receptacles, as this could result in
a risk of fire or shock.
Operating Voltage
The LDS16/800 amplifier is factory-set for 110V,
120V or 230V AC operation at either 50 or 60 Hz,
according to the country for which the unit was
manufactured (230V in European Union countries,
in compliance with CE regulations). The operating
voltage cannot be changed by the user and any attempt to do so will void the warranty .
The connections of the audio signal between your
preamp/control center and your LDS16/800 will be
made discretely via cables from the outputs of your
preamp to the gold plated inputs of your LDS16/
800. Please ensure that the cables are installed for
each channel as described on the following pages.
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Important note for using the
LDS Switches
For every first installation of a Sherbourn LDS
16/800 amplifier, do not set the LDS switches to
the OFF position until both switches are used to
sequentially check through each speaker connection, or the amplifier will not output the signal.
Operating the LDS switches
After physically installing a LDS16/800 amplifier
in a location according to the safety instructions
on page two of this manual, carefully complete the
signal cable wiring and speaker lead connections.
Refer to the drawings on pages 5 to 9 of this manual
to set the rear panel switches to your desired operating configuration.
Check and make sure both LDS switches are set to
the full clockwise position (ie., at position 4-R for
the left switch under group A amplifiers, and at
position 8-R for the right switch under group B
amplifiers. Connect the power cord and turn on the
power switch. The front panel blue light will come
on and both LDS LEDs under group A and B amplifiers will show the status of the speaker connections at the speaker output terminal of Zone 4-R
channel and at Zone 8-R channel. If the LED is
green it indicates a good speaker connection has
been made; orange indicates an open connection
somewhere; and red indicates either a short circuit
connection or a load impedance that is too low for
the amplifier.
Start with the LDS switch under group B amplifiers, then repeat the same process in this paragraph
for group A amplifiers. Sequentially rotate the LDS
switch to check through the positions 8-R, 8-L, 7R, 7-L, 6-R, 6-L, 5-R and 5-L for group B amplifiers, then 4-R, 4-L, 3-R, 3-L, 2-R, 2-L, 1-R and 1-L
for group A amplifiers. Observe the LED color
above the switch when checking each position. If a
red or orange color is detected, check and rewire
the connection of that channel until the LED turns
green.
You must never turn the LDS switch to the OFF
position whenever a LDS LED is RED during
above checking. To do so may connect a deadshort to the amplifier which may cause damage.
Activating the LDS16/800
After checking through every speaker connection
with the LDS switches, and having confirmed the
LDS LEDs are all green, then remove the tiny locking screw between the OFF and 5-L positions for
group B amplifiers (and between OFF and 1-L positions for group A amplifiers). Turn the switches to
the “OFF” position which will fully activate the
LDS16/800. The power on/standby control is then
handed over to either the external 12V DC Trigger,
or the Music Trigger, or the always power ON position (but controlled by the front panel power switch)
depending on how the trigger mode setting is made.
Make sure to r e-install the locking scr ew so the LDS
switches can not be turned which would disable the
power on setting of the switch.
Input Selection Switches
The 16-channel amplifiers of the LDS16/800 are split
into two groups, A and B, with zone 1, 2, 3 and 4
being the A group and 5, 6, 7 and 8 the B group.
Except for zone 1, each zone contains an input selection switch allowing it to receive either a “Global” main signal or “Local” zone signal. The group
A amplifiers can thus receive a Global-A signal (fed
to the zone 1 RCA input) and the group-B amplifiers
can receive either the same group-A signal by setting zone 5’s input selector to “Zone 1”, or receive
its own global-B signal (fed to the Zone 5 RCA input). W ith the input selection switch of a zone set to
its own zone, the zone amplifiers receive the signal
via the RCA jacks of that zone.
Trigger Mode Switch
On
Setting the trigger mode switch to the ON position
allows the LDS16/800 to stay “on” all the time. None
of the amplifiers will enter the standby mode. The
power to the amplifiers can only be turned off by
turning off the front panel power switch or disconnecting the power cord.
Music
Setting the trigger mode switch to MUSIC position
sets the LDS16/800 into auto-on-standby power control mode. The amplifier can sense a very low level
music signal fed to any of the signal inputs which
will turn the amplifier into an active state and will
play the music. When the music stops and no further
signal is received for more than 5 to 7 minutes (typically), the amplifier will turn into a standby mode,
which cuts off the power consumption substantially
and turns off all the green zone LEDs (on the rear
panel). The amplifier will wake up from the standby
mode, or sleep mode, whenever it receives a music
signal again.
12V
Setting the trigger mode switch to 12V allows the
power-on-standby function of LDS16/800 to be controlled by a 12V DC voltage connected to the 12V
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