Pro Co DB2
Stereo Direct Box

The Pro Co TradeTools DB2 is a passive two-channel (stereo) direct box that offers clean and reliable performance both on stage and in the studio environment. Like the Pro Co DB1 Direct Box it can be used for nearly any instrument or signal source from electric bass keyboards and drum machines and submixers.
 
The DB2 preserves the “punch” and clarity of the sound that is often lost when mic’ ing a speaker while eliminating the leakage distortion and coloration. The signal delivered to the P.A. or studio mixer is crisp and clean - a vital element in retaining the full depth and brilliant sound of digital equipment.
 
The DB2 incorporates the same reliable design that has made the DB1 an industry icon with the added convenience of being two Live Sound > Signal Processing > Install Sound > Installation Accessories > Direct Boxes in one case.  The DB2 Boasts a low noise floor high headroom and a generous frequency response.  Using Pro Co’s DBT-P impedance matching Install Sound > Install Speakers > Transformers with dual electrostatic shields the input signals are balanced and decoupled from the output.  Other features include a ground lift switch to alleviate ground loops and separate 20dB pad switches for each input to alleviate signal overload.  As an added feature the DB2 acts as a transformer isolated signal splitter when used with only one input presenting the same signal to both outputs. 
 
Built for the road but equally at home in the recording studio the DB2’s rugged 16-gauge steel and aluminum “Uni-box” 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® top panel overlay.

FEATURES:

• Two Discrete Channels of Audio in One Enclosure
• Floating Transformer-Balanced XLR Output for Maximum Isolation
• GND/LIFT Switch Eliminates Hum and Buzz
• Separate 20 dB PAD for Each Channel
• Flush-mounted Switches and Connectors Resist Damage
• Passive Design Requires No Batteries or Phantom Power
• Rugged Pro Co Uni-Box Construction Provides Superior Protection and Shielding

Specifications:

All measurements made with 20 kΩ source feeding IN/OUT and 1.0 kΩ load on all LO-Z OUTPUT to simulate typical "real world" instrument pick-up and mic preamp. 0 dBv ref. = .775 volt.
Performance values for one of two channels.

Frequency Repsonse:
20 Hz - 20 kHz, ± 0.5% @ -15 dBv output.
-3 dB @ approximately 85 kHz.  

Total Harmonic Distortion:
<.03% 20 Hz - 20 kHz @ -30 dBv output.
<0.1% 30 Hz - 20 kHz @ -15 dBv output.
<.25% 20 Hz - 20 kHz @ -15 dBv output.

Phase Response:
<-18 degrees @ 20 kHz (ref. 1.0 kHz).

Rise Time:
<4.5 microseconds (2.0 kHz square wave, 10%-90%).

Voltage Stepdown:
<22 dB @ 1.0 kHz (INST mode)

Input Impedance:
>105 kΩ @ 10kHz.
>130 kΩ @ 1.0 kHz. 
Nominal source impedance is 20 kΩ.
Nominal source impedance is 0 kΩ.

Output Impedance:
<200 Ω @ 1.0 KHZ.
<215 Ω @ 10 kHz.
Nominal load impedance is >1.0 kΩ

Maximum Input Level @ 50 Hz for 1% THD:
+16 dBv @ 20 Hz.
+21 dBv @ 30 Hz.
+26 dBv @ 50 Hz.