QSC Audio 1200の取扱説明書

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Summary
  • QSC Audio 1200 - page 1

    1 Owner’ s Manual ® A U D I O Rev. C Model 1 100 Model 1200 Model 1400 Model 1700 ▲ ▲ ▲ ▲ Series One *TD-000027-00* ...

  • QSC Audio 1200 - page 2

    2 EXPLANATION OF GRAPHICAL SYMBOLS The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “ dangerous voltage ” within the product ’ s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans. The exclamation point within an ...

  • QSC Audio 1200 - page 3

    3 I. INTRODUCTION 1.1 WELCOME Thank you for selecting a QSC Series One power amplifier for your audio system. Our goal is to ensure your complete satisfaction with your amplifier purchase. Please do not hesitate to call your QSC Dealer or QSC Audio Products if you have any service problems or questions not answered in this manual. Your QSC Series O ...

  • QSC Audio 1200 - page 4

    4 automatically as soon as safe operation is assured. An equally important muting circuit protects the loudspeakers from unexpected damage, by muting the amp during turn-on and turn-off and by blocking DC faults, whether caused by the amplifier or preceding components. The front panel presents essential user information and is recessed to prevent d ...

  • QSC Audio 1200 - page 5

    5 AMPLIFIER PROTECTION Full Short Circuit, Open Circuit, Over-Temp, Ultrasonic and RF Protection. Stable into reactive or mismatched loads. SPEAKER PROTECTION DC Load Fault Protection 3 Second Turn-on, Instant-off Muting COMPLEMENTARY OUTPUT DEVICES 4 8 16 32 POWER SUPPLY Single Transformer with Independent Isolated Secondary Windings, Fault Fuses, ...

  • QSC Audio 1200 - page 6

    6 2.27 High voltages can be present on the speaker terminals. Always connect speaker terminals with the power off, and use heavy gauge cable with no frayed strands or damaged insulation. 2.28 Please be aware that power amplifiers have high power circuitry inside with potential for fire and shock hazard; never plug in a damaged amplifier until the c ...

  • QSC Audio 1200 - page 7

    7 2.39 Operation and Indicators Note that the Gain controls are calibrated in dB. As you turn the Gain down, it takes more input signal to reach full power, so the Gain should be kept in the upper 12 dB of its range for full power output from normal signal sources. The “ 0 dB ” reference indicates that the amplifier gain is at 26 dB when the kn ...

  • QSC Audio 1200 - page 8

    8 III: OPERA TION 3.1 COOLING 3.11 The Model 1100 uses side-mounted, convection-cooled heat sinks for power transistor cooling. When rack mounted, temperature rise should not be excessive for eight-ohm loads at normal listening levels, but operation into lower impedances at high powers may cause heat build-up unless good access to cool air is provi ...

  • QSC Audio 1200 - page 9

    9 3.12 The Model 1200 uses an internal heat radiator, top ventilation slots, and the faceplate for cooling. The faceplate will get quite warm in severe usage, but this heatsink system will serve adequately when the amp is used in the open air. If the amps are mounted in tightly confined racks, we recommend that a fan be located so that it blows air ...

  • QSC Audio 1200 - page 10

    10 mismatches will result in slight loss of common-mode rejection, but will still have much greater noise rejection than unbalanced inputs. 3.34 Balanced Inputs For proper balanced-line operation, the cable shield should be connected at the power amplifier end only and kept separate from both signal conductors. The cable shield should be connected ...

  • QSC Audio 1200 - page 11

    11 3.36 Unbalanced Inputs and Polarity Unbalanced operation raises an interesting question regarding the trade-offs between maintaining standard system polarity and optimal stability. Normally, an amplifier is expected to reproduce input signals in the same polarity, which is called the non-inverting mode, so that a drum beat, for instance, pushes ...

  • QSC Audio 1200 - page 12

    12 3.38 Good Quality Connections A tight and corrosion-free contact at all connections is essential for good sound and to avoid erratic noises or unstable performance. 1/4-inch connectors are suitable for low-cost portable systems, but must be removed and replaced frequently to avoid corrosion build-up. 1/4-inch plugs are not recommended for long, ...

  • QSC Audio 1200 - page 13

    13 Connect the amplifier input to Ch. 1 only, and use only the Ch. 1 Gain control, which now controls the entire amplifier. Do not feed another input into Channel 2. The Ch. 2 Gain control should be kept off for safety. An 8 or 16 ohm speaker load should be connected across the two red speaker terminals, using the red terminal of Ch. 1 as the “ + ...

  • QSC Audio 1200 - page 14

    14 loss of 10% is barely audible, the resultant low damping factor will prevent the amplifier from fully controlling the peaks and dips in frequency response caused by speaker impedance variations. This will result in greater coloration and muddiness. Cable Wire Cable Power Loss, Power Loss, Damping Damping Length Gauge Resistance 8 Ω Load 4 Ω ...

  • QSC Audio 1200 - page 15

    15 3.7 25 AND 70 VOLT SYSTEMS 3.71 Introduction Commercial sound systems commonly use dozens or even hundreds of speakers for sound distribution. Special methods for connecting and controlling many separate speakers have been worked out by commercial sound contractors. 3.72 25 Volt lines 25 volt distribution systems are popular in small to medium s ...

  • QSC Audio 1200 - page 16

    16 3.83 Thermal Protection In case of blocked ventilation, improper loading or prolonged short-circuit operation, the temperature of the power transistors can rise to excessive levels. If the temperature of the heat sink rises to 85C, a thermostat will remove power to that channel. Power will be automatically restored when the channel has been allo ...

  • QSC Audio 1200 - page 17

    17 then the fault is somewhere in the bad channel. Check the input program switches, octal accessory (if any) or jacks. See Section 3.5 for correct switch settings. Inspect the binding posts for damage, and try a different input jack or the parallel channel switches before giving up on the channel. 3.93 Weak But Clear Sound This usually indicates l ...

  • QSC Audio 1200 - page 18

    18 that stage. Assuming that the hiss has not always been there, this indicates defective electronics. Certain special- effects units are rather noisy, so compare with other users. Crackles — defined as a “ popcorn ” noise. If the crackle persists during pauses in the program material, this indicates defective electronics and must be traced d ...

  • QSC Audio 1200 - page 19

    19 You may have some problems finding the larger value capacitors in the preferred film-type construction. If necessary, several can be paralleled; simply add the individual capacitances together to get the total rating. You will probably have to locate non-polar electrolytics for values greater than 10-20uf. 4.4 POWER CAPACITY All speakers have a ...

  • QSC Audio 1200 - page 20

    20 V : MAINTENANCE AND SER VICE 5.1 CLEANING The faceplate and chassis can be cleaned with a soft cloth and mild non-abrasive cleaning solution, such as Windex. Avoid cleaning powders or scrubbing pads, as these will scratch and dull the paint. Be sure to unplug the unit prior to cleaning. Do not apply liquid directly to the surface. Dampen the clo ...

  • QSC Audio 1200 - page 21

    21 ...

  • QSC Audio 1200 - page 22

    22 ® A U D I O “ QSC ” is a registered trademark of QSC Audio Products, Inc. 1675 MacArthur Blvd. Costa Mesa, CA 92626 (714) 754-6175 FAX (714) 754-6174 ...

メーカー QSC Audio カテゴリー Stereo Amplifier

QSC Audio 1200のメーカーから受け取ることができるドキュメントは、いくつかのグループに分けられます。その一部は次の通りです:
- #BRANDの図面#
- 1200の取扱説明書
- QSC Audioの製品カード
- パンフレット
- またはQSC Audio 1200の消費電力シール
それらは全部重要ですが、デバイス使用の観点から最も重要な情報は、QSC Audio 1200の取扱説明書に含まれています。

取扱説明書と呼ばれる文書のグループは、QSC Audio 1200の取り付け説明書、サービスマニュアル、簡易説明書、またはQSC Audio 1200のユーザーマニュアル等、より具体的なカテゴリーに分類されます。ご必要に応じてドキュメントを検索しましょう。私たちのウェブサイトでは、QSC Audio 1200の製品を使用するにあたって最も人気のある説明書を閲覧できます。

関連する取扱説明書

QSC Audio 1200デバイスの取扱説明書はどのようなものですか?
取扱説明書は、ユーザーマニュアル又は単に「マニュアル」とも呼ばれ、ユーザーがQSC Audio 1200を使用するのを助ける技術的文書のことです。説明書は通常、全てのQSC Audio 1200ユーザーが容易に理解できる文章にて書かれており、その作成者はその分野の専門家です。

QSC Audioの取扱説明書には、基本的な要素が記載されているはずです。その一部は、カバー/タイトルページ、著作権ページ等、比較的重要度の低いものです。ですが、その他の部分には、ユーザーにとって重要な情報が記載されているはずです。

1. QSC Audio 1200の説明書の概要と使用方法。説明書にはまず、その閲覧方法に関する手引きが書かれているはずです。そこにははQSC Audio 1200の目次に関する情報やよくある質問、最も一般的な問題に関する情報を見つけられるはずです。つまり、それらはユーザーが取扱説明書に最も期待する情報なのです。
2. 目次。QSC Audio 1200に関してこのドキュメントで見つけることができる全てのヒントの目次
3. QSC Audio 1200デバイスの基本機能を使うにあたってのヒント。 QSC Audio 1200のユーザーが使い始めるのを助けてくれるはずです。
4. トラブルシューティング。QSC Audio 1200に関する最も重要な問題を診断し、解決するために役立つ体系化された手続き
5. FAQ。よくある質問
6. 連絡先。一人では問題を解決できない場合に、その国におけるQSC Audio 1200のメーカー/サービスへの連絡先に関する情報。

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