Product Overview
With 480 watts of TOA power, the A-848D offers maximum flexibility with 8 inputs and the ability to monitor status from anywhere. The A-848D provides one MOH (Music On Hold) output and open slots for two 900 series modules (sold separately), allowing you to customize the amp for your specific needs. The A-848D is designed to handle background or foreground music, paging, noise masking applications, and has an integrated music ducking function. It features onboard DSP (Digital Signal Processing) and TOA's legendary audio quality and reliability.
Includes
- 800D Series mixer amplifier
- Power cord
- Audio input removable terminal plug
- Volume control cover
- Rack mounting bracket
- Binding head screws
- Flat washers
Features
- TOA class D amplifiers for maximum efficiency
- Auto gain control for microphone inputs
- Onboard DSP
- Dynamic feedback filters
- Speaker EQ (3 bands of parametric EQ) Input tone controls accessible via the unit's web browser when connected to a network
- Assignable input priorities
- Builtin defeatable pre-announce chime
- Log Data
- IP protocol available
Specifications
- Power Source: 120 V AC, 60 Hz
- Rated Output: 480 W
- Power/Current Consumption: 621 W (rated output), 103 W (based on UL62368), 200 mA or less (when power switch is OFF)
- Frequency Response: 50 Hz - 20 kHz ±3 dB (1/8 rated output)
- Distortion: 1 % or less at 1 kHz, rated power (20 kHz LPF (AUX-0025))
- Tone Control:
- Bass: ±10 dB at 100 Hz
- Treble: ±10 dB at 10 kHz
- Signal to Noise Ratio:
- 88 dB or more (Master volume: min)
- 76 dB or more (Master volume: max)
- 55 dB or more (INPUT 1 - 6)
- (A-weighted)
- Audio Input
- INPUT 1, 2: -60 dB (*1) (MIC)/-20 dB (*1) (LINE) selectable, 600 Ω, electronically-balanced, removable terminal block (3 pins)
- Note: MIC inputs are equipped with phantom power (24 V DC, ON/OFF switchable).
- INPUT 3, 4: -60 dB (*1), 600 Ω, electronically-balanced, removable terminal block (3 pins)
- Note: Equipped with phantom power (24 V DC, ON/OFF switchable).
- INPUT 5, 6: MIC/LINE selectable
- MIC: -60 dB (*1), 600 Ω, electronically-balanced, removable terminal block (3 pins)
- LINE: -20 dB (*1), 10 kΩ, unbalanced, RCA pin jack × 2
- MODULE 1, 2: -20 dB (*1), 10 kΩ
- PWR AMP IN: 0 dB (*1), 600 Ω, unbalanced, RCA pin jack
- (An equalizer or other signal processor connectable between PRE AMP OUT and PWR AMP IN terminals)
- Input Bus
- INPUT 1 - 4: AUDIO
- INPUT 5, 6: AUDIO/DUCK selectable
- MODULE 1, 2: AUDIO/DUCK selectable
- Audio Output
- SPEAKER OUT: High impedance (70 V line/10 Ω)/Low impedance (4 - 16 Ω) selectable, removable terminal block (3 pins)
- REC OUT: 0 dB (*1), 600 Ω, unbalanced, RCA pin jack × 2
- PRE AMP OUT: 0 dB (*1), 600 Ω, unbalanced, RCA pin jack
- Control Input
- 4 channels, no-voltage make contact input, open voltage: 35 V DC or less, short-circuit current: 10 mA or less, removable terminal block (4 pins)
- REMOTE VOLUME: Removable terminal block (4 pins)
- Control Output
- POWER REMOTE: Open collector output, withstand voltage: 30 V DC or less, control current: 25 mA or less, removable terminal block (4 pins)
- EMERGENCY OUT: Open collector output, withstand voltage: 30 V DC or less, control current: 25 mA or less, removable terminal block (4 pins)
- Chime: 1-note, 2-note, or ascending 4-note chime, or None selectable with switch setting
- Indicators
- 5-point LED output level meter, Power indicator LED, LAN Connect indicator LED, Priority indicator LED, Emergency indicator LED, Thermal protection indicator LED, Over current protection indicator LED, CPU RUN indicator LED, Error indicator LED
- Operating Temperature: 14 ゜F to 104 ゜F (-10 ℃ to +40 ℃)
- Operating Humidity: 85 %RH or less (no condensation)
- Finish
- Panel: ABS resin, black
- Case: Surface-treated steel plate, black, paint
- Dimensions (WxHxD): 16.54" × 3.78" × 12.33" (420 × 96.1 × 313.1 mm)
- Weight: 11.9 lb (5.4 kg)
- Option
- Input transformer: IT-450
- Perforated panel: PF-013B
