Pro Co DB4A
4 Channel Rack Mount Direct Box
The DB4A provides four discrete “direct-box” channels in a convenient single space (1 3/4” 44.45mm) rack-mounting package. Ideal for the multi-keyboardist it is equally well suited to any application requiring the interface of unbalanced high-impedance equipment and balanced low-impedance mixer inputs.
Unlike the traditional “mic on the speaker” approach the direct approach delivers the clarity and punch that a modern sound demands. The full richness and character of the instruments is preserved because the distortion and coloration of speakers and microphones has been eliminated.
The versatile design of the DB4A allows easy integration with any high-quality audio system. Three parallel-connected IN/OUT jacks for unbalanced signals make “patching in” at virtually any stage of the signal path a simple task. Signals may be taken straight from the instruments (and effects devices) themselves or from sub-mixer outputs (if you have to run out of mixer channels). Of course multiple DB4A’s can be used when separate outputs from each instrument or effect are needed.
The DB4A’s rugged 16–gauge steel and aluminum “Uni–box” construction enclosure is finished in a durable black texture powder coat finish with black anodized aluminum side channels. Easy– to–read control graphics are incorporated into the Lexan® front and back panel overlays. Inside DBT-P Install Sound > Install Speakers > Transformers combine superb audio quality with unsurpassed noise rejection. The DB4A can be mounted in any standard 19” (482.6mm) rack.
Floating Transformer-Balanced XLR Output for Maximum Isolation
4 Independent Channels for 4 Keyboards Drum Machine Outputs etc.
3 IN/OUT Jacks per Channel for Convenient Loop-Thru
LINT Mode Handles Signals to +34 dBv
GND/LIFT Switch Eliminates Hum and Buzz
Rack-mounted “Uni-box” Construction for Superior Protection and Shielding
Flush-mounted Switches and Connectors Resist Damage
Passive Design Requires No Batteries or Phantom Power
Specifications Type Passive Input Connections 12 x 1/4" TS phone 1 Please Note: Any of these may be used as an input or as a loop-through output, as long as only one source is connected to each channel close Output Connectors 4 x XLR
As per input Input Level +26dBv (instrument mode)
+46dBv (line mode) @ 50Hz Output Level Not specified by manufacturer Controls Ground lift per channel
Instrument/line selection switch per channel Frequency Response 20Hz to 20kHz, +/-0.5dB @ -15dBv output Noise Not specified by manufacturer Power Passive Dimensions (WxDxH) 19 x 4-3/4 x 1-3/4" (483 x 121 x 45 mm) Weight 4.4 lbs (1.6 kg) Specialties Custom-built impedance-matching transformer optimized for use with high-impedance sources such as electric guitars and basses. It is also very applicable to other unbalanced sources such as keyboard instruments Packaging Info Packaging Info Package Weight 4.6 lb Box Dimensions (LxWxH) 20.0 x 5.2 x 2.1"