1. Ifihan
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. Awọn Ilana Aabo pataki
- Orisun Agbara: Connect the unit only to a 120 V AC, 60 Hz power supply. Ensure the power cord is securely plugged in.
- Afẹfẹ: Ma ṣe dina awọn ṣiṣi atẹgun. Rii daju pe sisan afẹfẹ to peye ni ayika ẹyọ lati ṣe idiwọ igbona.
- Ọrinrin: Do not expose the unit to rain or moisture. Avoid placing objects filled with liquids, such as vases, on the apparatus.
- Awọn nkan ajeji: Má ṣe fi ohunkóhun sínú àwọn ihò ẹ̀rọ náà.
- Ṣiṣẹ: Tọkasi gbogbo iṣẹ si awọn oṣiṣẹ iṣẹ ti o peye. Maṣe gbiyanju lati ṣe iṣẹ ọja yii funrararẹ.
- Ilẹ: Rii daju didasilẹ to dara lati ṣe idiwọ mọnamọna.
3. Package Awọn akoonu
Jẹrisi pe gbogbo awọn ohun kan wa ninu package:
- Adàpọ̀ TOA A-848D/Digital Ampitanna
- Okun agbara
- Removable Terminal Blocks (various sizes for inputs/outputs)
- Afowoyi Olumulo (iwe-ipamọ yii)
4. Ọja Ipariview
4.1 Igbimọ iwaju
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.
- TITUNTO Iṣakoso didun: Ṣatunṣe iwọn didun igbejade gbogbogbo.
- Bọtini agbara: Yipada ẹyọ naa tan tabi pa.
- Mita Ipele LED: Ṣe afihan ipele ifihan agbara ti o wu jade.
- Awọn Atọka Ipo LEDs for Error, Over Current, Thermal Protect, LAN Connect, Emergency, Priority, and CPU Run.
4.2 ru Panel
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.
- Wiwọle Agbara AC: So okun agbara ti a pese nibi.
- Awọn igbejade Agbọrọsọ: 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.
- Ibudo LAN: For network connection and IP control.
- JADE: RCA output for recording.
- PRE AMP Jade: RCA output for connecting to an external power amplifier.
- MODULE 1-2 Slots: Bays for installing optional 900 Series modules.
- Awọn Yipada DIP: Various switches for configuring module functions, phantom power, and input types.
5. Eto ati fifi sori
- Ibi: Gbe awọn amplifier on a stable, level surface with adequate ventilation. Avoid direct sunlight, heat sources, and excessive dust or moisture.
- Asopọ̀ Agbọrọsọ: 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.
- Asopọmọra ẹrọ:
- 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.
- Asopọ Nẹtiwọọki (Aṣayan): For IP control and monitoring, connect an Ethernet cable from your network router/switch to the LAN port.
- Asopọ agbara: 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. Awọn ilana Iṣiṣẹ
- Agbara Tan: Press the Power button on the front panel. The unit's indicators will illuminate.
- Eto Iwọn didun Ibẹrẹ: Before playing audio, set all INPUT level controls and the MASTER volume control to their minimum positions.
- Ṣíṣe àtúnṣe Àwọn Ìpele Ìwọlé:
- Start playing audio from your source device.
- 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.
- Iṣakoso ohun orin: 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): Wọle si amplifier ká web interface via its IP address (refer to network setup instructions for details) to configure advanced settings, monitoring, and remote control.
- Agbara Pa: To turn off the unit, press the Power button.
7. Itọju
- Ninu: 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.
- Afẹfẹ: Máa ṣàyẹ̀wò lẹ́ẹ̀kọ̀ọ̀kan pé àwọn ihò afẹ́fẹ́ kò ní eruku àti ìdọ̀tí nínú.
- Ibi ipamọ: Ti o ba tọju ẹyọ naa fun akoko ti o gbooro sii, ge asopọ kuro ni agbara ki o tọju rẹ si ibi ti o tutu, ti o gbẹ.
8. Laasigbotitusita
| Isoro | Owun to le Fa | Ojutu |
|---|---|---|
| Ko si agbara | Power cord not connected; Power outlet faulty; Unit fuse blown. | Check power cord connection; Try a different outlet; Contact service personnel for fuse replacement. |
| Ko si ohun jade | 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. |
| Ohun ti o daru | Input level too high (clipping); Speaker impedance mismatch; Faulty cable. | Reduce input level; Ensure speaker impedance matches amplifier; Replace audio cables. |
| Hum tabi ariwo | Ground loop; Poor cable shielding; Nearby electrical interference. | 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. |
Ti iṣoro naa ba wa lẹhin igbiyanju awọn ojutu wọnyi, jọwọ kan si awọn oṣiṣẹ iṣẹ ti o peye.
9. Awọn pato
| Ẹya ara ẹrọ | Ẹ̀kúnrẹ́rẹ́ |
|---|---|
| Awoṣe | A-848D |
| Orisun agbara | 120 V AC, 60 Hz |
| Ti won won Jade | 480 W |
| Agbara agbara | 621 W (rated output), 103 W (UL62368), 200 mA or less (power OFF) |
| Idahun Igbohunsafẹfẹ | 50 Hz to 20 kHz ±3 dB (1/8 rated output) |
| Idarudapọ | 1 % or less at 1 kHz, rated power |
| Iṣakoso ohun orin | Bass: ± 10 dB ni 100 Hz, Treble: ± 10 dB ni 10 kHz |
| Ifihan agbara si Noise Ratio | 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. |
| Ọriniinitutu ti nṣiṣẹ | 85 % RH tabi kere si (ko si condensation) |
| Pari | Panel: ABS resini, dudu |
| Iwọn Nkan | 11.9 iwon |
| Nọmba ti awọn ikanni | 8 |
| Asopọmọra Technology | Iranlọwọ |
10. Atilẹyin ọja ati Support
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official TOA webAaye naa. Maṣe gbiyanju lati tun ẹrọ naa ṣe funrararẹ, nitori eyi le fa idaniloju rẹ.
