1. はじめに
This manual provides essential information for the safe and efficient operation of your TOA A-9120SM2 Digital Matrix Mixer and Single Amplifier. Please read this manual thoroughly before using the product and retain it for future reference. The TOA 9000M2 Series redefines conventional mixer/amplifier categories by combining a modular matrix mixer, digital signal processor (DSP), and amplifiers into a compact, two-rack-space package. It is designed for multi-zone paging, music distribution, and room-combining applications.
2. 安全情報
Always observe the following safety precautions to prevent personal injury and property damage.
- 電源: Connect the unit only to the specified power supply (120VAC, 60Hz). Ensure the power cord is securely plugged in and not damaged.
- 換気： 通気口を塞がないでください。過熱を防ぐため、ユニット周囲に十分な空気の流れを確保してください。
- 水分： 本体を雨や湿気にさらさないでください。花瓶など、液体の入った物を本体の上に置かないでください。
- 異物: 通気口に金属物や可燃物を入れないでください。
- サービス: この製品を自分で修理しようとしないでください。 すべてのサービスを資格のあるサービス担当者に依頼してください。
- 接地: 感電を防ぐために適切な接地を確保してください。
3.製品オーバーview
The TOA A-9120SM2 is a versatile unit combining a mixer, DSP, and amplifier. It features:
- Modular Mixer: Up to 8 mic/line inputs and 8 outputs.
- Dual Channel Digital Signal Processor (DSP): Includes 10-Band Parametric EQ, High and Low Pass Filters, Compressor, Loudness Contour, Bass and Treble Delay (MIXER mode), and 34 TOA Speaker EQ Presets.
- Single Channel Power Amplifier: Rated output of 120W.
- Telephone Zone Paging: Access up to eight zones with an optional ZP-001T module.
- Rack-mount Kit Included (2RU).
Figure 3.1: Front Panel of a Representative TOA Power Amplifier (Model BA-260 shown for illustration). This image displays the main controls including the master volume knob, signal, peak, and power indicators, as well as bass and treble adjustment sliders and the power switch.
Figure 3.2: Rear Panel of a Representative TOA Power Amplifier (Model BA-260 shown for illustration). This image illustrates the connectivity options, including terminals for MOH (Music On Hold) output, speaker outputs for different zones, line outputs, and various microphone/line inputs. It also shows the power input and a unit breaker reset button.
4. セットアップ
Follow these steps for proper installation and setup of your A-9120SM2 unit.
- 開梱: Carefully remove the unit from its packaging. Verify all components are present, including the rack-mount kit.
- ラックマウント： The A-9120SM2 is designed for 2RU rack mounting. Securely install the unit into a standard equipment rack using the provided rack-mount kit. Ensure adequate ventilation space above and below the unit.
- 電源接続: Connect the power cord to the unit's power inlet and then to a grounded 120VAC, 60Hz power outlet.
- 入力接続: Connect your audio sources (microphones, line-level devices) to the appropriate modular input slots. The unit supports up to 8 mic/line inputs. Refer to the specific module manuals for detailed connection instructions.
- 出力接続： Connect your speakers or other audio destinations to the speaker output terminals (120W, 4Ω, unbalanced) or preamp必要に応じて lifier を出力します。
- オプションモジュール： If using optional modules like the ZP-001T for telephone zone paging, install them according to their respective instructions.
5. 操作手順
The A-9120SM2 offers flexible operation modes for various applications.
- 電源オン/オフ: Use the power switch on the front panel to turn the unit on or off. The power indicator will illuminate when the unit is on.
- フロントパネルのコントロール：
- マスターボリューム： 全体の出力レベルを調整します。
- Signal/Peak Indicators: Monitor audio signal presence and clipping. Adjust input levels to prevent the peak indicator from consistently lighting up.
- 低音/高音コントロール: Fine-tune the low and high frequency response of the audio output.
- DSP Configuration: The unit features a Dual Channel DSP. Configuration can be done via the front panel or, for advanced settings, using the convenient GUI programming interface (Windows). This interface allows for fast configuration and upload/download of all settings, including:
- 10バンドパラメトリックEQ
- High and Low Pass Filters
- コンプレッサー
- Loudness Contour
- Bass and Treble Delay (MIXER mode)
- 34 TOA Speaker EQ Presets
- Integrated Operating Modes: The A-9120SM2 supports powerful functionalities for both simple mixing and complex multi-zone paging applications. This includes:
- Telephone Zone Paging
- Automatic Microphone Mixing
- 周囲騒音制御
6. メンテナンス
Proper maintenance ensures the longevity and optimal performance of your A-9120SM2.
- クリーニング： 本体の外装は、柔らかく乾いた布で拭いてください。液体クリーナーやエアゾールスプレーは、表面仕上げや内部部品を損傷する恐れがあるため、使用しないでください。
- 換気： 通気口に埃やゴミが詰まっていないか定期的に確認してください。柔らかいブラシや圧縮空気を使って、優しく清掃してください。
- 接続: すべてのケーブル接続が安全で腐食がないことを定期的に確認してください。
- ストレージ： ユニットを長期間保管する場合は、電源を外し、直射日光や極端な温度を避けて、涼しく乾燥した場所に保管してください。
7。 トラブルシューティング
This section addresses common issues you might encounter. If the problem persists, contact qualified service personnel.
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| 電源なし | Power cord disconnected; Power outlet faulty; Unit breaker tripped. | Check power cord connection; Test power outlet; Reset unit breaker (if applicable). |
| 音が出ない | Master volume too low; Input source not connected or faulty; Speaker connections loose; DSP settings incorrect. | Increase master volume; Verify input source and connections; Check speaker wiring; Review DSP settings via GUI. |
| 歪んだ音 | Input level too high (clipping); Speaker impedance mismatch; Faulty cables. | Reduce input level (monitor peak indicator); Ensure speaker impedance matches unit specifications; Replace faulty cables. |
| ユニットの過熱 | Blocked ventilation; Insufficient airflow in rack. | Clear all ventilation openings; Ensure proper rack ventilation. |
8. 仕様
Detailed technical specifications for the TOA A-9120SM2.
- 電源: 120VAC、60Hz
- 消費電力: 150W
- 定格出力： 120W
- オーディオ入力: 最大。 8チャンネル、モジュラー構造（モジュールはオプション）
- 力 Ampリファイア入力: 0dB, 10kΩ, RCA pin jack
- オーディオ出力:
- 前amplifier output 1: 0dB, 300Ω, unbalanced, RCA pin jack
- 前amplifier output 2: 0dB, 600Ω, balanced, removable terminal block (3-pin)
- Speaker output: Removable terminal block (7 pins), (Direct) 120W, 4Ω, unbalanced
- Digital Audio Signal Reference Level: -20dBFS
- 仕上げる： Panel: Aluminum, hair-line, black. Case: Surface-treated steel plate, black, paint
- 寸法 (W × H × D): 420mm × 107.6mm × 355mm (16.54インチ × 4.24インチ × 13.98インチ)
- 重さ： 28.66ポンド（13kg）
- チャンネル数: 8
- 取り付けタイプ: Rackmount (2RU)
9. 保証情報
TOA products are manufactured to the highest quality standards. For specific warranty terms and conditions applicable to your A-9120SM2, please refer to the warranty card included with your purchase or visit the official TOA webサイトでご確認ください。保証請求に備えて購入証明書を保管してください。
10. サポートとお問い合わせ
For technical assistance, troubleshooting beyond this manual, or service inquiries, please contact TOA customer support or your authorized TOA dealer. You can find contact information on the official TOA webサイト：
When contacting support, please have your product model number (A 9120SM2) and serial number ready.
