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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Art SLA-2, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Art SLA-2 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Art SLA-2. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Art SLA-2 should contain:
- informations concerning technical data of Art SLA-2
- name of the manufacturer and a year of construction of the Art SLA-2 item
- rules of operation, control and maintenance of the Art SLA-2 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Art SLA-2 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Art SLA-2, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Art service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Art SLA-2.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Art SLA-2 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
The ART SLA-2 Studio Linear Amplifier TABLE OF CONTENTS Safety Precau tions ....................................................................................... 2-3 Introduction .................................................................................................... 4 Installati on ....................................................[...]
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2 IMPORTANT SAFETY INSTRUCTION – READ FIRST This symbol, whenever it appears, This symbol, wherever it appears, alerts alerts you to the presence of uninsulated you to important operating and maintenance dangerous voltage inside the encl osure-voltage instructions in the accompan ying literature. that may be sufficient to constitute a risk of sho[...]
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Page 3
3 SAFETY PRECAUTIONS Warning: For optimum performance and reliability, do not operate the amplifier with a speaker load of less than 4 Ohms per channel, or any combination of speakers that together are less than 4 Ohms. Using one speaker per channel, it must be rated at 4 or more Ohms. Using two speakers per channel, they must each be rated at 8 Oh[...]
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4 INTRODUCTION Thank you for purchasing an ART SLA- 2 Studio Linear Amplifier - and congratulations, you now own one of the most versatile amplifiers available. Offering a superb level of sound qua lity, the SLA-2’s clean and powerful circuitry combined with a straightforw ard user interface quickly and easily delivers the power you need for prof[...]
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5 INSTALLATION The SLA-2 may be used in a wide variety of project and professional studio environments. Self-contained in a steel and aluminum enclosure, the unit is designed for many years of use. For greater reliability, we recommend that you not place the unit directly under or on top of other sources of heat. It is important that any rack-mount[...]
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6 SECURITY COVER For commercial installations it may be desirabl e to set the gain controls on the power amp, and then make them in accessible t o non-qualified operators. This can be acco mplished by using the Security Co ver Plate which is included with the SLA-2. Simply set the cha nnel attenuators to th e desired gain settings, then press the k[...]
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7 CONTROLS & INDICATORS – FRONT PANEL FRONT PANEL DIAGRAM POWER SWITCH The Power Switch is located on the front of the unit, directly in the center. During initial installation, make sure the attenuators for channels one and two are set to a low volume level before applying power. CHANNEL ATTENUATORS The dials for channel one and channel two?[...]
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8 PROTECT INDICATOR LED The LED will glow when the channel goes into protect mode. In protect mode, the output signal to the speakers will be muted (channel specific). If there is a fault condit ion at the speaker outputs (due to a severe load or short) the LED will light until the fault is removed. The protect lights will also light dur ing power [...]
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9 REAR PANEL CONNECTIONS REAR PANEL DIAGRAM It is easy to interface the SLA-2 with a wide variety of equipment. All inputs and outputs are loca ted on the rear panel. Standard EuroBlock, ¼” and XLR inputs and bind ing post outputs make patching simple. INPUTS The SLA-2 has three styles of input connections: EuroBlock, XLR and ¼”. Use these co[...]
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10 XLR INPUT JACKS The XLR Input jacks are Pin Two posit ive, Pin Three negative, and Pin One is ground. This connection is for balanced connections. EUROBLOCK BARRIER STRIP Insert the wires, then snug down with the set screw. The entire barrier strip can be removed fo r quick service without disconnecting the individual wires. EURO BLOCK DIAGRAM A[...]
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11 Spade Connector – Loosen the red and black caps on the binding posts (don’t completely remove). Insert the spade connector into the binding post and tighten the caps down on the spade connector. Be sure that the wire c onnected to one post does NOT come in contact with that of another post. Banana Plug – Insert the banana plugs into the ca[...]
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12 GROUND LIFT SWITCH This switch is used to disconnect t he internal ground signal from the chassis (case) ground. This ma y be used to reduce 50/60Hz noise (hum or buzz). Normally you would ground the chassis, for best shielding. When the SLA-2 is mounted in a grounded rack of equipment, the ground to the case may be lifted to prevent multiple gr[...]
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13 MONO BRIDGE OPERATION Be sure the amp is shut off. Press the Stereo/Mono switch (on the back) to the “in” position. Conn ect an input signal to channel one. Connect your speaker across the tw o red output binding posts on the rear of your amplifier. Turn your equipment on – your amplifier should be the last piece you turn on (be sure its v[...]
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- 14 - WARRANTY INFORMATION Limited Warranty Applied Research and Technology will pr ovide warranty and service for this unit in accordance with the following warrants: Applied Research and Technology, (A R T) warrants to the original purchaser that this product and the components thereof will be free from defects in workmanship and materials for a[...]
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- 15 - SERVICE The following information is provided in the unlikely event that your unit requires service. 1) Be sure that the unit is the cause of the problem. Check to make sure the unit has the proper power supplied, all cables are connected correctly, and the cables themselves ar e in working condition. 2) If you find the unit to be at fault, [...]
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- 16 - SLA-2 SPECIFICATIONS Dimensions 1.75”H x 19.0” W x 13.5”D Weight 19.8 lbs., 9.0kg. Input Connections XLR,EUROBLOCK (balanced), ¼”TRS(balanced/unbalanced) Output Connections Multi-Way Binding Post Input Impedance 44k ohms (balanced) 22k ohms (unbalanced) Input Sensitivity 1V for Full Power Output into 8 ohms Stereo Output Power, 8 oh[...]