Sherbourn
Technologies, Inc.
Owner’s Manual for Power Amplifier Models 7/2100A and 5/5210A
The 7/2100A amplifier has seven 300/200 watt channels (4 ohms/8 ohms) and the 5/5210A amplifier has five 300/200 watt channels. The instructions, specifications and connections described in
this manual apply to both models.
Thank you so much for your decision to purchase one of our superb Sherbourn amplifiers. We take enormous pride in the design and build quality 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 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 to persons.
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.
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.
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 lightening 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 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.
2.Locate the product away from heat sources such as stoves, heat registers, radiators or other appliances 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 example 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 injury to a person and/or serious damage to the equipment.
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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 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.
3.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 please contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the groundingtype 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 integral 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
Custom 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. We 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.
Front Panel Indicators
With your amplifier connected to its preamp and receiving an input signal at its first POWER ON the blue LED will turn on with a full brightness. Should you not hear music through the speakers it could be that there is no signal to the input of your amplifier and you should check the preamp/control center for proper settings and connections.
Your amplifier front panel includes multiple blue LED’s (one per channel). Adjacent to these LED’s is a switch to allow you to turn them off should you wish to do so.
Rear Panel Connections
It is strongly recommended that you make all of your connections and check them thoroughly before powering up your amplifier from the front panel switch. This will ensure that you do not accidentally short the output of the amplifier or encounter any electric shock or sparks or cause any initial and surprisingly loud signals to be played through your loudspeakers.
1.The connection between your Preamp/Control Center will be made discretely via a cable from the output of your Preamp to the input of your amplifier.
2.The amplifier gives the option (depending on your preamp) of making the connection with either an XLR Balanced Input or an RCA Unbalanced Input.
3.If your system has a noisy ground connection or if you need to run a distant input cable to the
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Rear panel view of model 7/2100A
Rear panel view of model 5/5210A showing nonfunctional channels in shaded areas
amplifier, it is recommended that wherever possible you use the XLR Input for your connection.
4. Your amplifier includes a 12V DC trigger input connector to allow for remote integration with your preamp/control center. If your preamp includes provision to output 12V DC to remotely turn on other equipment, you can use a control cable to connect the preamp to the trigger input of your amplifier to allow it to automatically turn on whenever you turn on your preamp. We recommend that a shielded coaxial cable be used for this purpose. A removeable plug at the 12V trigger input
(comes with the amplifier) shall be unplugged and wired with the 12V in the correct polarity. The input impedance of the 12V input is 2.2k ohms; it will accept an input voltage from 9V to 12V.
5. It is strongly advised that you only use the power cords supplied with the amplifier. Never use any other power cords with a smaller gauge than the one provided. Do not use an extension cord to install your amplifier since it could effectively reduce the current capacity supplied to the amplifier.
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