Audio Press Box APB-448-SB Active APB, 4 MIC/LINE In, 48 LINE/MIC Out, builtin battery

The AudioPressBox APB-448 SB is a portable active press box for both indoor and outdoor operation. It features 4 MIC/Line Inputs and 48 Line/MIC Outputs. Each Output is an independent transformer balanced and isolated. Each input can be routed to channel A or channel B or both at the same time. There is a bus A with 24 Line/MIC outputs and bus B with 24 Line/MIC outputs. The APB-448 SB includes a rechargeable AccuPack allowing it to operate for up to 8 hours. It also is a functional drive unit with 4 buffered expander outputs and is able to power an additional 96 line/MIC Outputs. You can connect any of the AudioPressBox expander units.

Audio Press Box APB-448-SB Features:

• 4 MIC (phantom power) / LINE Inputs – balanced with gain control and 26dB PAD
• Each Input is routable to A/(A+B)/B Outputs Group
• 48 High quality independent transformer balanced and isolated outputs
• Each Output is switchable between MIC or LINE level
• 2 internal Output Groups: 24x Output A and 24x Output B
• 2 separate buffered A and B Outputs for driving up to 48 channels of passive
• Switchable High-Pass filter for each Input channel
• Switchable Compressor and Limiter for each Input channel
• PFL/AFL for each Input/Output channel
• Constant level Test signal oscillator with no mistake switch operation
• Headphones control Output for PFL/AFL
• Li-Ion AccuPack with microprocessor controlled battery management
• 8 hour full load capacity. Note: AccuPack is placed inside the unit

Audio Press Box APB-448-SB Specifications:

• Type: 4 in 48 out
• Groups: 2
• Inputs: 4
• Input connectors: Balanced, XLR
• Input Gain: MIC +22/+62 dB LINE -4/+36 dB
• Max. input level:
• Phantom Voltage: 48V
• Input Impedance: Mic: 2,4 kOhm Line: 3,5 kOhm
• Outputs: 48 Line/MIC level (24x Output A, 24x Output B)
• Output connectors: Balanced, XLR
• Nominal Output Level: +6dBu
• Maximum Output Level: +20dBu (no load)
• +14dBu (600kOhm)
• Output impedance:
• Transformer isolated outputs: Yes (each output)
• SNR: 86dB
• Frequency Response: 30/160Hz (filter) to 30kHz/-1dB
• Controls:
• Indicators:
• Power Supply: 24V DC, 1A external adaptor
• Battery: Li-Ion, 14,4 V 2200mAh (optional)
• Battery operation time: min.6 hrs
• Dimensions (WxHxD): 440x285x140mm
• Weight: 8210 g