1. تعارف
This manual provides essential information for the safe and efficient operation of your TOA A-848D Mixer/Digital Amplifier. Please read this manual thoroughly before use and retain it for future reference. The A-848D is a versatile mixer amplifier designed for various audio applications, offering up to eight inputs and 480W of power, with features like IP control and onboard DSP.
2. اھم حفاظتي ھدايتون
- طاقت جو ذريعو: Connect the unit only to a 120 V AC, 60 Hz power supply. Ensure the power cord is securely plugged in.
- وينٽيليشن: وينٽيليشن جي سوراخن کي نه روڪيو. يونٽ جي چوڌاري مناسب هوا جي وهڪري کي يقيني بڻايو وڃي ته جيئن وڌيڪ گرم ٿيڻ کان بچي سگهجي.
- نمي: Do not expose the unit to rain or moisture. Avoid placing objects filled with liquids, such as vases, on the apparatus.
- پرڏيهي شيون: يونٽ جي کليل خانن ۾ ڪا به شيءِ داخل نه ڪريو.
- خدمت ڪرڻ: سڀني خدمتن کي قابل سروس اهلڪارن جي حوالي ڪريو. هن پراڊڪٽ کي پاڻ سروس ڪرڻ جي ڪوشش نه ڪريو.
- گرائونڊنگ: برقي جھٽڪو کي روڪڻ لاءِ مناسب گرائونڊنگ کي يقيني بڻايو وڃي.
3. پيڪيج مواد
پڪ ڪريو ته سڀئي شيون پيڪيج ۾ موجود آهن:
- TOA A-848D Mixer/Digital Ampزندگي گذاريندڙ
- پاور ڪنڊ
- Removable Terminal Blocks (various sizes for inputs/outputs)
- استعمال ڪندڙ جو دستياب (ھي دستاويز)
4. پراڊڪٽ ختمview
4.1 فرنٽ پينل
Figure 4.1: Front Panel of the TOA A-848D. This image displays the front of the amplifier, featuring six input level controls, two module level controls, Bass and Treble tone controls, a Master volume knob, and a power button. An LED display shows output levels, and status indicators for Error, Over Current, Thermal Protect, LAN Connect, Emergency, Priority, and CPU Run are visible.
- INPUT 1-6 Level Controls: Adjust the input level for each of the six audio inputs.
- MODULE 1-2 Level Controls: Adjust the input level for optional 900 Series modules.
- BASS/TREBLE Tone Controls: Adjust the low and high frequency response of the output.
- ماسٽر حجم ڪنٽرول: مجموعي آئوٽ حجم کي ترتيب ڏيو.
- پاور بٽڻ: يونٽ کي آن يا بند ڪري ٿو.
- LED Level Meter: Displays the output signal level.
- حيثيت جا اشارو: LEDs for Error, Over Current, Thermal Protect, LAN Connect, Emergency, Priority, and CPU Run.
4.2 ريئر پينل
Figure 4.2: Rear Panel of the TOA A-848D. This image shows the rear connections, including the AC power inlet, speaker outputs, remote control terminals, various input terminals (MIC/LINE, phantom power switches), LAN port, pre-amp out, and slots for two 900 Series modules. Dip switches for module settings are also visible.
- اي سي پاور انليٽ: هتي فراهم ڪيل پاور ڪنڊ کي ڳنڍيو.
- اسپيڪر جا نتيجا: Terminals for connecting loudspeakers.
- POWER REMOTE OUT: For remote power control.
- EMERGENCY OUT: For emergency system integration.
- INPUT 1-4 (MIC/LINE): Electronically-balanced removable terminal blocks. Phantom power (24V DC) is switchable for INPUT 1-4.
- INPUT 5-6 (MIC/LINE/RCA): Electronically-balanced removable terminal blocks for MIC, or unbalanced RCA pin jacks for LINE.
- LAN پورٽ: For network connection and IP control.
- REC اهر: RCA output for recording.
- PRE AMP ٻاهر: RCA output for connecting to an external power ampوierيڪ زنده
- MODULE 1-2 Slots: Bays for installing optional 900 Series modules.
- DIP سوئچ: Various switches for configuring module functions, phantom power, and input types.
5. سيٽ اپ ۽ تنصيب
- لڳائڻ: جاءِ amplifier on a stable, level surface with adequate ventilation. Avoid direct sunlight, heat sources, and excessive dust or moisture.
- اسپيڪر ڪنيڪشن: Connect your loudspeakers to the appropriate speaker output terminals on the rear panel. Ensure correct polarity (+ to + and - to -). Refer to the speaker impedance and power handling specifications.
- ان پٽ ڊوائيس ڪنيڪشن:
- For microphones or line-level devices, connect to INPUT 1-6 using the removable terminal blocks.
- If using condenser microphones, activate the phantom power switch for the corresponding input on the rear panel.
- For line-level devices with RCA outputs, use INPUT 5 or 6 RCA jacks.
- Module Installation (Optional): If using 900 Series modules, carefully insert them into MODULE 1 or 2 slots on the rear panel. Configure the associated DIP switches as required by the module's instructions.
- نيٽ ورڪ ڪنيڪشن (اختياري): For IP control and monitoring, connect an Ethernet cable from your network router/switch to the LAN port.
- پاور ڪنيڪشن: Ensure all audio connections are made before connecting the power cord. Plug the supplied power cord into the AC Power Inlet on the rear panel, then into a suitable 120 V AC, 60 Hz wall outlet.
6. آپريٽنگ هدايتون
- پاور آن: Press the Power button on the front panel. The unit's indicators will illuminate.
- شروعاتي حجم سيٽنگون: Before playing audio, set all INPUT level controls and the MASTER volume control to their minimum positions.
- ان پٽ ليولز کي ترتيب ڏيڻ:
- پنهنجي سورس ڊيوائس تان آڊيو هلائڻ شروع ڪريو.
- Slowly increase the corresponding INPUT level control until the LED level meter shows a healthy signal without clipping (avoiding the red segment).
- Adjusting Master Volume: Once individual input levels are set, slowly increase the MASTER volume control to achieve the desired overall output level.
- ٽون ڪنٽرول: Use the BASS and TREBLE controls to fine-tune the audio's low and high frequencies to suit your preference or room acoustics.
- IP Control (if connected): تائين رسائي ampجاندار web interface via its IP address (refer to network setup instructions for details) to configure advanced settings, monitoring, and remote control.
- بجلي بند: To turn off the unit, press the Power button.
7. سار سنڀال
- صفائي: Disconnect the power cord before cleaning. Use a soft, dry cloth to wipe the exterior of the unit. Do not use liquid cleaners or aerosols.
- وينٽيليشن: وقتاً فوقتاً چيڪ ڪريو ته وينٽيليشن جا سوراخ مٽي ۽ ملبي کان صاف آهن.
- اسٽوريج: جيڪڏهن يونٽ کي گهڻي عرصي تائين ذخيرو ڪري رهيا آهيو، ته ان کي بجلي کان ڌار ڪريو ۽ ان کي ٿڌي، سڪل جاءِ تي ذخيرو ڪريو.
8. مسئلا حل ڪرڻ
| مسئلو | ممڪن سبب | حل |
|---|---|---|
| طاقت نه آهي | Power cord not connected; Power outlet faulty; Unit fuse blown. | Check power cord connection; Try a different outlet; Contact service personnel for fuse replacement. |
| ڪوبه آواز ٻاھر نه | Master volume too low; Input level too low; Speaker connections incorrect; Mute function active; Source device not playing. | Increase Master volume; Increase input level; Check speaker wiring and polarity; Check for mute settings (if applicable); Verify source device operation. |
| بگڙيل آواز | Input level too high (clipping); Speaker impedance mismatch; Faulty cable. | Reduce input level; Ensure speaker impedance matches amplifier; Replace audio cables. |
| گوڙ يا شور | گرائونڊ لوپ؛ ڪيبل جي خراب شيلڊنگ؛ ويجهو بجلي جي مداخلت. | Ensure proper grounding; Use shielded cables; Move unit away from interference sources. |
| Thermal Protect LED active | Unit overheating due to blocked ventilation or excessive load. | Turn off unit, allow to cool; Ensure ventilation is clear; Reduce output load if possible. |
جيڪڏهن انهن حلن جي ڪوشش ڪرڻ کان پوءِ به مسئلو برقرار رهي، ته مهرباني ڪري قابل سروس اهلڪارن سان رابطو ڪريو.
9. وضاحتون
| خاصيت | تفصيل |
|---|---|
| ماڊل | اي 848D |
| طاقت جو ذريعو | 120 وي AC ، 60 هز |
| درجه بندي آئوٽ | 480 ڊبليو |
| بجلي جو استعمال | 621 W (rated output), 103 W (UL62368), 200 mA or less (power OFF) |
| تعدد جواب | 50 Hz to 20 kHz ±3 dB (1/8 rated output) |
| تحريف | 1 % or less at 1 kHz, rated power |
| ٽون ڪنٽرول | باس: ±10 dB 100 Hz تي، ٽربل: ±10 dB 10 kHz تي |
| سگنل کان شور جي نسبت | 88 dB or more (Master min), 76 dB or more (Master max), 55 dB or more (INPUT 1 to 6) (A-weighted) |
| Inputs 1, 2 | -60 dB (MIC)/-20 dB (LINE) selectable, 600 Ω, electronically-balanced, removable terminal block (3.81 mm, 3 pins). Phantom power (24 V DC, ON/OFF switchable). |
| Inputs 3, 4 | -60 dB, 600 Ω, electronically-balanced, removable terminal block (3.81 mm, 3 pins). Phantom power (24 V DC, ON/OFF switchable). |
| Inputs 5, 6 | MIC: -60 dB, 600 Ω, electronically-balanced, removable terminal block (3.81 mm, 3 pins). LINE: -20 dB, 10 kΩ, unbalanced, RCA pin jack x 2. |
| آپريٽنگ نمي | 85٪ RH يا گهٽ |
| ختم ڪر | پينل: ABS resin، ڪارو |
| شيءِ جو وزن | 11.9 پائونڊ |
| چينلن جو تعداد | 8 |
| رابطي ٽيڪنالاجي | معاون |
10. وارنٽي ۽ سپورٽ
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official TOA webسائيٽ. يونٽ کي پاڻ مرمت ڪرڻ جي ڪوشش نه ڪريو، ڇاڪاڻ ته اهو توهان جي وارنٽي کي رد ڪري سگهي ٿو.
