1. Įvadas
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. Svarbios saugos instrukcijos
- Maitinimo šaltinis: Connect the unit only to a 120 V AC, 60 Hz power supply. Ensure the power cord is securely plugged in.
- Vėdinimas: Neužblokuokite ventiliacijos angų. Užtikrinkite pakankamą oro cirkuliaciją aplink įrenginį, kad jis neperkaistų.
- Drėgmė: Do not expose the unit to rain or moisture. Avoid placing objects filled with liquids, such as vases, on the apparatus.
- Užsienio objektai: Do not insert any objects into the unit's openings.
- Aptarnavimas: Visus techninės priežiūros darbus patikėkite kvalifikuotiems techninės priežiūros darbuotojams. Nebandykite patys atlikti šio gaminio techninės priežiūros.
- Įžeminimas: Užtikrinkite tinkamą įžeminimą, kad išvengtumėte elektros smūgio.
3. Pakuotės turinys
Patikrinkite, ar pakuotėje yra visi reikalingi daiktai:
- TOA A-848D maišytuvas / skaitmeninis Ampgyvybingesnis
- Maitinimo laidas
- Removable Terminal Blocks (various sizes for inputs/outputs)
- Vartotojo vadovas (šis dokumentas)
4. Produktas baigtasview
4.1 Priekinis skydelis
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.
- MASTER garsumo valdymas: Sureguliuokite bendrą išvesties garsumą.
- Maitinimo mygtukas: Įjungia arba išjungia įrenginį.
- LED lygio matuoklis: Displays the output signal level.
- Būklės rodikliai: LEDs for Error, Over Current, Thermal Protect, LAN Connect, Emergency, Priority, and CPU Run.
4.2 Galinis skydelis
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.
- Kintamosios srovės maitinimo įvadas: Čia prijunkite pateiktą maitinimo laidą.
- Garsiakalbių išvestys: 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 prievadas: For network connection and IP control.
- REC OUT: RCA output for recording.
- PRE AMP IŠĖJIMAS: RCA output for connecting to an external power ampgyvesnis.
- MODULE 1-2 Slots: Bays for installing optional 900 Series modules.
- DIP jungikliai: Various switches for configuring module functions, phantom power, and input types.
5. Sąranka ir diegimas
- Vieta: Padėkite amplifier on a stable, level surface with adequate ventilation. Avoid direct sunlight, heat sources, and excessive dust or moisture.
- Garsiakalbio jungtis: 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.
- Įvesties įrenginio jungtis:
- 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.
- Tinklo ryšys (neprivaloma): For IP control and monitoring, connect an Ethernet cable from your network router/switch to the LAN port.
- Maitinimo jungtis: 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. Naudojimo instrukcijos
- Maitinimas: Press the Power button on the front panel. The unit's indicators will illuminate.
- Pradiniai garsumo nustatymai: Before playing audio, set all INPUT level controls and the MASTER volume control to their minimum positions.
- Įvesties lygių reguliavimas:
- Pradėkite leisti garsą iš savo šaltinio įrenginio.
- 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.
- Tono valdymas: 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): Prisijunkite prie ampgelbėtojas web interface via its IP address (refer to network setup instructions for details) to configure advanced settings, monitoring, and remote control.
- Išjungti: To turn off the unit, press the Power button.
7. Priežiūra
- Valymas: 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.
- Vėdinimas: Reguliariai tikrinkite, ar ventiliacijos angos nėra dulkių ir šiukšlių.
- Saugykla: Jei įrenginį ilgesnį laiką sandėliuosite, atjunkite jį nuo elektros tinklo ir laikykite vėsioje, sausoje vietoje.
8. Problemų sprendimas
| Problema | Galima priežastis | Sprendimas |
|---|---|---|
| Nėra galios | Power cord not connected; Power outlet faulty; Unit fuse blown. | Check power cord connection; Try a different outlet; Contact service personnel for fuse replacement. |
| Nėra garso išvesties | 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. |
| Iškraipytas garsas | Input level too high (clipping); Speaker impedance mismatch; Faulty cable. | Reduce input level; Ensure speaker impedance matches amplifier; Replace audio cables. |
| Dumbo ar triukšmo | 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. |
Jei problema išlieka ir išbandžius šiuos sprendimus, kreipkitės į kvalifikuotus techninės priežiūros darbuotojus.
9. Specifikacijos
| Funkcija | Detalė |
|---|---|
| Modelis | A-848D |
| Maitinimo šaltinis | 120 V kintama srovė, 60 Hz |
| Vardinė galia | 480 W |
| Energijos suvartojimas | 621 W (rated output), 103 W (UL62368), 200 mA or less (power OFF) |
| Dažnio atsakas | 50 Hz to 20 kHz ±3 dB (1/8 rated output) |
| Iškraipymas | 1 % or less at 1 kHz, rated power |
| Tono valdymas | Žemieji dažniai: ±10 dB esant 100 Hz, aukšti dažniai: ±10 dB esant 10 kHz |
| Signalo ir triukšmo santykis | 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. |
| Darbinė drėgmė | 85 % RH arba mažiau (be kondensato) |
| Baigti | Skydas: ABS derva, juoda |
| Prekės svoris | 11.9 svaro |
| Kanalų skaičius | 8 |
| Ryšio technologija | Pagalbinis |
10. Garantija ir palaikymas
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official TOA webNebandykite patys taisyti įrenginio, nes tai gali panaikinti garantiją.
