Sherbourn 2/100A User manual

1
Model 2/100A
Owner’s Manual
Thank you so much for your decision to pur-
chase one of our superb Sherbourn amplifiers. We
take enormous pride in the design and build qual-
ity of all of our products and we are confident that
our product will provide you with many years of
enjoyable and trouble-free service. Should you
have any need to call upon our services please feel
free to contact us at the address shown at the end
of this booklet or of course you can contact the
dealership from which you purchased the product.
Full details of the warranty coverage provided
by Sherbourn Technologies can be found at the end
of this booklet.
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 tri-
angle shown above is intended to alert you to the
presenceofuninsulated‘dangerousvoltage’within
the product’s enclosure that may be of sufficient
magnitude to constitute an electric shock to per-
sons.
3. The exclamation point within an equilateral tri-
angle shown above is intended to alert you to the
presence of important operating and maintenance
(servicing) instructions in the literature accompa-
nying this appliance.
4. Please retain this manual in a safe place for fu-
ture 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 electri-
cal shock, do not expose this equipment to rain
or moisture.
7.Caution: Topreventelectrical shock do notuse
this (polarized) plug with an extension cord, re-
ceptacle or other outlet unless the blades can be
fully inserted to prevent blade exposure.
Attention: Pour pevenir les chocs electriques pas
utiliser cette fuche polarisee avec un
prolongateur, une prise de courant ou un autre
sortie de courant, sauf si les lames peuvent etre
inserees afond ans en laisser aucune partie a
decouvert.
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 lighten-
ing or power line surges.
9. Do not use attachments not recommended in this
owner’s manual as they may cause hazards.
Caution For Installation
1. Do please locate the equipment for proper ven-
tilation. For example, the product should never
be allowed to operate while positioned on a bed,
rug, sofa or any such surface where proper ventila-
tion is not possible. Nor should the unit be placed
inabuilt-ininstallationsuchas a cabinetorarmoire,
etc. in such a way as to impede the air flow. Al-
ways ensure adequate ventilation openings - please
see later comments regarding such an installation.
2. Locate the product away from heat sources such
as stoves, heat registers, radiators or other appli-
ances including other amplifiers that produce heat.
3. Please mount the equipment in a wall or cabinet
only as described in this owner’s manual.
4. Do not use the equipment near water; for ex-
ample near a bathtub, washbowl, kitchen sink, a
swimming pool or in a wet basement etc.
5. 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 in-
juryto a person and/or serious damage to the equip-
ment.
Sherbourn
Te c h n o l o g i e s , I n c .

2
Connections and Care of the
Product
Connections
1. Connect this equipment only to the type of AC
power source as marked on the unit.
2. Always route AC power cords so that they are
notlikely to be walkedon,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.
3. Do not defeat the inherent design features of the
polarized plug. Non polarized line cord adapters
will defeat the safety provided by the polarizedAC
plug. If the plug should fail to fit please contact
your electrician to replace your obsolete outlet. Do
notdefeat 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
the “E” (earth pin) of the power cord connected to
this product.
4. Do not overload wall outlets, extension or inte-
gral convenience receptacles as this could result in
a risk of fire or shock.
Care of the Product
1. Clean the product by dusting with a dry cloth.
2. Do not permit objects of any kind to be pushed
and/or fall into the product through the enclosure
openings
General Description
The Model 2/100A has been designed to work
as both an ‘Interrupter’ in an existing system and
as regular power amplifier to drive up to two pairs
of 8 ohm speakers or one pair of 4 ohm speakers.
The amplifier can be configured in a ‘bridged/
mono’mode by simply changing the ‘slide’ switch.
The2/100Afeatures auto-turn-on and turn-off func-
tions which can be activated by an audio or video
signal or by a +12VDC trigger. Turn-off time is
adjustable and the function can be defeated should
there be a desire to do so.
Configured as an “Interrupter”
This feature is best described with an example.
Assumethatyou have bought a newTVset or com-
puter and you want to integrate it with your exist-
ing stereo system so as to allow the TV or com-
puter sound to come out of your existing
speakers...well the the 2/100A is designed to do
just that!
To install the 2/100Awith your existing system,
disconnect the speaker cables from your left and
right speakers and reconnect them... red to “+”,
black to “-”, right to ‘R’ channel and left to ‘L’
channel to the connector marked “From Ext.Amp”
on the panel of 2/100A. Now connect your TV or
computer ‘Line Output’ to the ‘Line Input’ of the
2/100A. If your TV does not have a ‘Line Output’
use the T/V’s ‘Speaker Output’ and connect it to
the terminal marked ‘Speaker Level Input’ on the
panel of the 2/100A.
You will then need to prepare two ‘New’sets of
speaker cables. Connect one end of the cable to
either set of the speaker output terminals which
are marked ‘To Speakers A’ or ‘To Speakers B’.
Finally, connect the other end of the cables to your
speakers taking care to connect them correctly.
Connect the power cord to the 2/100A and turn on
the power switch and you are ready to play. Now,
when the TVor computer is turned on the audio or
video signal that is fed to the 2/100A will auto-
matically switch off the speakers from the existing
power amplifier and allow the 2/100A to power
them instead. Conversely, when you switch off
the TV/ or computer the 2/100Awill lose its signal
and will enter a ‘Standby’or ‘Sleep’mode and au-
tomatically reconnect the speakers to your exist-
ing amplifier. You can see, therefore, that the 2/
100A is in fact functioning as an INTERRUPTER
in your system.
Configured as a Regular Stereo
Amplifier
Volume Control
Two separate control knobs are provided for left
and right volume control. When functioning under
bridge-mono mode, only the right volume control
is used for volume adjustment.
Stereo / Bridged Mode
A switch allows you to set 2/100A in either stereo
(ST) or Bridge (BRGD) mode function. Under
bridged mode, both L and R inputs are summed

3
togetherandfed to both amplifiers. Please note that
the volume setting can only be controlled by the
‘R’ channel volume control.
12VDC Trigger In and Out
TheTrigger outputis 12Vat a maximumof 100mA.
This can be used to drive a relay operatedAC out-
let or other 12V triggered devices. The 12V volt
trigger input is used to activate the amplifier inde-
pendently from the auto turn on sensing circuit, in
which case the delay, video and audio sensing are
bypassed.
Music and Video Trigger
Apart from the 12V Trigger you can also use the
Audio and Video signal (fed through the ‘Line In’
connectors or the ‘Speaker Level Input’ connec-
tors) to ‘Wake-up’your 2/100Afrom its ‘Standby’
mode. By receiving any one of these three signals
the 2/100A will ‘Wake-up’ automatically and the
LEDwill immediately turn to full brightness.When
the2/100Aisbeing ‘Triggered’by a music or video
source you will notice that once the music stops
playing OR whenever the 2/100A has received no
music signal for its ‘Pre-set’ period (see note be-
low) it will enter its ‘Standby’mode..meaning that
the amplifier is effectively ‘Put to sleep’ to con-
serve power and the LED will dim to half bright-
ness.The ‘Video’trigger is paralleled with the ‘Mu-
sic’ trigger so they both have the same level of pri-
ority.
Auto Time Off
The 2/100Acan be ‘Pre-set’for automatic time off
for any period between 30 seconds to ten minutes
by setting the control between ‘1’ and ‘4’. There-
after,iftheamplifier has received no musicor video
signal for its predetermined time it will automati-
cally go into its standby mode. This feature can be
‘defeated’by turning the knob to between positions
#`4 and # 5. Under this setting the 2/100A can
only be turned off from the Power Switch and it
will not enter into either its ‘Standby’or ‘wake-up’
mode.
It is important to note that the 2/100Ais designed
to work with a maximum of two pairs of 8 ohm
speakers or one pair of 4 ohm speakers. Please
consult your dealer about the impedance of any
speakers that you intend to use with your 2/100A
because the warranty will be invalidated if the 2/
100A is used outside of the parameters outlined
in this paragraph.
Five Year Limited Warranty
Subject to the terms and conditions stated be-
low, Sherbourn Technologies, Inc. (Sherbourn)
warrantsto the originalowner that thisProductshall
be free from defects in workmanship or materials
for a term of five (5) years from its date of pur-
chasefrom anAuthorized Sherbourn Dealer.Trans-
fer of this product by its original owner (the
‘Owner’) will automatically terminate this War-
ranty regardless of when occurring.
In the event of any defect covered by this war-
ranty, Sherbourn shall provide all parts, materials,
and labor necessary to restore the Product to its
original specifications, and shall return the Prod-
uct to its owner at Sherbourn’s expense. In the al-
ternative, Sherbourn may at its sole option either
replacethe Product without charge,orif its replace-
ment is not commercially practicable or repair or
replacement cannot be accomplished within a rea-
sonable time, Sherbourn may refund the purchase
price of the Product, subject where appropriate to
reasonable depreciation for actual use in accor-
dance with applicable laws, in full satisfaction of
its warranty obligations.
Sherbourn’s sole obligation under this warranty
shall be to repair or replace the product, or at its
option refund the purchase price, as provided for
hereinabove. Sherbourn does not warrant
against, nor shall it be liable for, any of the fol-
lowing:removalorinstallation charges, shipping
expenses to its authorized service facility, loss of
use, property damage of any kind, or other inci-
dental or consequential damage or losses of any
kind.
Note: Some states do not allow exclusion or limi-

4
tation of consequential damages, so the foregoing
exclusions may not apply to you.
This warranty does not cover any of the follow-
ing: (a) cabinetry, trim, or other appearance items
(exceptwhere they aredefectiveat the timeoforigi-
nal sale and the Product is delivered for repair
within the first thirty days (30) thereafter): (b) fail-
ures arising from accident, catastrophe, misuse,
neglect, or failure to properly connect and operate
the product in accordance with the accompanying
instruction: (c) failures arising from improper in-
stallation of the Product or incompatibility of other
components in the system of which the Product is
a part: (d) failures of any kind in products (i) which
have been purchased from other than Authorized
Sherbourn dealers, or (ii) which evidence any tam-
pering, alteration, or attempted servicing by any-
one other than Sherbourn or an Authorized
Sherbourn Service Facility; and Sherbourn shall
have no liability or obligation of any kind with re-
spect to any of the foregoing losses types of fail-
ures.
Toobtain service under thisWarranty, theOwner
must first obtain form Sherbourn a Return Autho-
rization Number, and must then, at the owner’s ex-
pense (i) arrange for any necessary de-installation
of the Product, and (ii) deliver or ship the Product,
properly packaged and clearly identified with the
Return Authorization Number, prepaid, and in-
sured, to Sherbourn at the address shown below,
or to anAuthorized Sherbourn Service Facility. In
addition, the Owner must provide evidence that the
Product is at the time of delivery within the scope
of this Warranty, by either having completed and
submitted to Sherbourn on a timely basis a War-
rantyRegistrationCardorbyincludingtheORIGI-
NAL dated sales receipt with the Product when
submitted for repair.
Safeguard your original sales receipt, as it may
be required to validate Warranty coverage
The owner is solely responsible for payment of
all expenses for removing the Product from its in-
stallation, delivering it to Sherbourn or an Autho-
rized Sherbourn Service Facility, and reinstalling
it following repair, as well as for any repairs made
to Products which are subject to the exclusions
noted above.
In order to learn the name and address of the
nearestAuthorized Sherbourn Service Facility, ob-
tain a Return Authorization Number and shipping
instructions, or obtain answers to any other ques-
tions you may have concerning this Warranty, you
may telephone Sherbourn between the hours of
9:00 a.m. and 5:00 p.m. Eastern Time Monday
through Friday at 978-663-7385 (Fax 978-663-
7389) or write to the Service Department,
Sherbourn Technologies, Inc., 19-3A Sterling
Road, North Billerica, MA 01862.
This warranty gives you specific legal rights,
andyou may also haveotherrights which vary from
state to state.
If this product has been purchased outside of
the United States of America you should contact
your local dealer or distributor to determine the
warranty coverage provided in your country.
Thank you for taking the time to read this
manual...now sit back, relax and enjoy your
Sherbourn2/100Aamplifierwhichhas been de-
signed and manufactured with care and atten-
tion to give you many years of trouble free ser-
vice.
Sherbourn Technologies, Inc.
19-3A Sterling Road,
North Billerica, MA 01862
Tel [phone]
Fax [phone]