DISC Proel DB2A Active DI Box

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Key Features

  • Active direct injection box
  • 2 channel single RCA and jack input with 2 balanced XLR output
  • PAD switch with -20 dB and -30 dB capacity
  • 19 inch rack mountable and able to couple to other Proel DI boxes

DISC Proel DB2A Active DI Box Overview

View this description in Danish

The Proel DB2A Active DI Box is an essential device for any application where the audio devices feature differing levels, impedance, and connections. The Proel DB2A is designed to balance your audio signals and diminish electrical interference, preventing feedback and distortion to the main mixing console and master audio.


The DB2A is an active two-channel version of the Proel DB range. Proel has put enormous effort into ensuring the circuitry is comprised of precision electronics such as isolation transformers and low distortion ICs. The Proel DB2A has two Jack input and a single RCA input on both Channels. On each channel is a ground lift button and a PAD switch that reduces the volume of signals at either 20 dB or 30 dB. The PAD switch is useful for running synthesizers, keyboards, and guitars which may produce an overly loud signal. The outputs from channel one and channel two are balanced XLR male.


The Proel DB2A Active DI Box has three methods of power supply: 48 V phantom power from the mixing console, a 9 V battery, or a 9 V power adapter; which when using multiple Proel DI boxes can be daisy chained to power multiple DB units using the double 9 V connector on the back. Rubber covers protect the corners of the Proel DB2A which can be removed. Removing the rubber edge protectors reveals interlocking rails that can be used to couple Proel DB units. Two Proel DB units coupled together can be mounted in a 19 inch standard rack, with rack fittings included.

Product Ref: 227920

Full Description

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Features

  • Engineered to balance audio with precision interference reducing electronics
  • 2 channels with both RCA and jack inputs
  • -20dB and -30dB PAD switch allowing you to reduce loud signals fed into the DI box
  • 3 power supply options: 48V phantom power, 9V battery or 9V power adapter.
  • 9V power supply can be linked to multiple units through the double 9V connector on the back of the DI box.
  • Protective rubber edges increase damage resistance
  • Rubber features can be removed and the DI Box coupled to the same model to be mounted on a 19 inch rack

Specifications

Input Section

  • Input Impedance:
    • 200K Ohm (pad at 0 dB)
    • 47k Ohm (pad at -20 dB)
    • 47k Ohm (pad at -40 dB)
  • Max Input Level:
    • +5 dBu (pad at 0 dB)
    • +25 dBu (pad at -20 dB)
    • +35 dBu (pad at -30 dB)
  • Connectors: 2 x 1/4" jack + 1 x RCA (unbalanced)

Output Section

  • Output: Active discrete devices (transformer less)
  • Max. Output Level (into 600 Ohms or greater):
    • +5 dBu (for 0.1 THD at 50 Hz)
    • +5 dBu (for 0.1 THD at 1k Hz)
  • Connector: XLR-M

System Performance

  • Insertion loss: < 1 dB
  • CMR: > 50 dB
  • Phase distortion: +20° at 20 Hz, -30° at 20k Hz
  • Distortion (THD 20-20k Hz 0dBu): < 0.007
  • Noise: < -105 dBu unweighted
  • Frequency Response: 10 Hz to 40 kHz, +0dB/-1 dB
  • General:
  • Controls: n/off, Pad -20, Pad -30, Gnd Lift.
  • Indicators: On
  • Phantom Power: +24 volts DC to +48 volts DC
  • AC/DC adaptor: +9 volts DC
  • Standalone/Standby: 9 volt PP3 type battery
  • Current consumption: less than 8 mA
  • Dimensions (WxHxD): 215 x 50 x 125 mm
  • Weight: 1.06 kg (2.34 lb)