TradeTools CB1 Direct Box
CONTROLS
INPUT:
1/4” (6.3mm) phone jack accepts unbalanced signals from instrument or other source. Input impedance-greater than 180 kohm. Handles signals of up to +20 dBv at 20 Hz.
NOT RECOMMENDED FOR SPEAKER LEVEL USE.
LO-Z OUTPUT:
Male 3-pin XLR-type connector provides balanced floating low-impedance output (pin 2 hot). Connect to mixing board microphone channel input. Recommended load impedance: 1.0 kohm.
OUTPUT:
1/4” (6.3mm) phone jack provides “loop-through” (parallel) connection from input jack. Used when inserting CB-1 between instrument and amplifier.
GND/LIFT:
GND position connects INPUT and LO-Z OUTPUT grounds together. LIFT position “floats” LO-Z OUTPUT. Used to reduce hum and buzz by eliminating ground loops and providing proper grounding for various conditions.
TYPICAL CONTROL SETTINGS
| TYPE OF INPUT SOURCE | SWITCH SETTINGS | STAGE/STUDIO AMP CONNECTED TO OUTPUT (1) |
| Electric Guitar/Bass, Some Older Keyboards, Some Effects Pedals | GND(2) | NO |
| LIFT | YES | |
| Keyboards, Drum Machines, Drum Synths, Preamp/Line Outputs of Mixers or Amplifiers, Effects Units | LIFT | NO |
| LIFT | YES |
NOTES ON CONTROL SETTINGS
- LO-Z OUTPUT is connected to microphone input of house P.A. mixer or recording console.
- GND/LIFT switch settings assume the mixer is also the central ground reference point for the system.
For safety reasons all equipment should be equipped with 3-wire AC power cords and plugged into properly grounded receptacles.
Use of the GND/LIFT switch should minimize hum and buzz.
If GND/LIFT switch seems non-functional, check wiring of cable plugged into the LO-Z OUTPUT. A cable with a jumper between pin 1 and the connector shell will defeat the GND/LIFT switch.
CIRCUIT DIAGRAM
Other TradeTools™ Products from Pro Co
| AV1A | Audio/Video Interface Unit |
| AVP1 | Wall plate Format Audio/Video Interface Unit |
| AVP1V | Wall plate Format Audio/Video Interface Unit with Input Level Control |
| DB1 | Professional Direct Box |
| DB2 | Professional Stereo Direct Box |
| DB4A | Rackmount Quad Direct Box |
| DBA1 | Professional Active Direct Box |
| HJ4P | Professional Stereo headphone Junction Box |
| HJ6 | Headphone Junction Box |
| iFace | Portable Audio Player Interface |
| iGate | Universal Audio Gateway |
| iPlate | Wall plate Format Portable Audio Player Interface |
| iRack | Rackmount Portable Audio Player Interface |
| IT1 | Isolation Transformer Unit |
| IT4A | Rackmount Quad Isolation Transformer Unit |
| IT8A | Rackmount 8-ch. Isolation Transformer Unit |
| LS82 | Rackmount 8-ch. 1:2 Line Level Splitter |
| MC2 | Microphone Combiner |
| MS2 | 1:2 Microphone Splitter |
| MS3 | 1:3 Microphone Splitter |
| MS42A | Rackmount Quad 1:2 Microphone Splitter |
| MS43A | Rackmount Quad 1:3 Microphone Splitter |
| MS82 | Rackmount 8-ch. 1:2 Microphone Splitter |
| MS82P | Rackmount 8-ch. 1:2 Phantom Power Microphone Splitter |
| MS83 | Rackmount 8-ch. 1:3 Microphone Splitter |
| MS83P | Rackmount 8-ch. 1:3 Phantom Power Microphone Splitter |
| RA1 | Reamping Box |
| . . . plus our full line of audio cabling, snakes! | |
CUSTOMER SUPPORT
Pro Co Sound
225 Parsons Street | Kalamazoo, MI 49007
800-253-7360
www.procosound.com
CB1-02 Rev. 02/10
Documents / Resources
 |
TradeTools CB1 Direct Box [pdf] Installation Guide CB1 Direct Box, CB1, Direct Box, Box |
