DB-2RM-WP Wall-mounted stereo direct box

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The DB-2RM-WP is a stereo direct box made to fit in a standard single-gang electrical wall plate. This provides the AV integrator with a simple, yet effective means of connecting an unbalanced analog audio source such as the headphone output from a laptop computer, iPhone, tablet or line level source such as a CD player to a balanced audio system via a permanently mounted interface.

  • Easy to use control panel
  • Passive design, no power needed
  • Contractor friendly screw terminals
  • Transformer isolated eliminates noise

The design begins with all-steel construction for maximum durability and a fully shielded back box to help eliminate pollution from electromagnetic fields caused by dimmers, ballasts, power cables and transformers. Front panel 3.5mm TRS and RCA connectors provide a standard interface for any stereo source and a fully variable level control makes volume adjustments easy. Inside, the DB-2RM-WP employs two great sounding transformers to convert the high impedance signal to a balanced low impedance capable of driving cables upwards to 100 meters (300′) without noise. Transformers further benefit by eliminating hum and buzz caused by so-called ground loops and stray DC voltages that are common when interfacing consumer grade audio devices with professional audio systems. This is augmented with a set & forget ground lift switch. Should channel count be a problem, a recessed mono switch passively sums the stereo signal to a single output. The outputs feature screw terminals with tie-down points for tie-wraps to make installation fast, efficient and permanent.

Finished in a durable black powder coat and sized to fit a standard Decora wall plate, the DB-2RM-WP looks sharp with any color faceplate while providing clear labeling for easy manipulation for the pros and novices alike.

Applications

DB-2RM-WP with a CD player

Connect the line level output from your CD player or hi-fi using the convenient RCA jacks to feed the PA system at the far end of the room. Adjust the volume level from the source, the DB-2RM-WP or the mixer channel.

DB-2RM-WP with a tablet

No need to convert from digital to analog! Simply connect the headphone out from your tablet or cell phone to the DB-2RM-WP and let it do the work. Adjust the volume using the convenient front panel level control and sum to mono if need be.

DB-2RM-WP with a laptop

Connect the mini TRS audio jack from your laptop directly to the 3.5mm input on the DB-2RM-WP and it automatically converts the unbalanced signal to a lo-Z balanced line to feed the PA system up to 100 meters away.

Specifications

Specifications  
Audio circuit type: Passive transformer isolated
Frequency response: 20Hz – 20kHz
Dynamic range: >120dB
Noise floor: -101dBu
Equivalent input noise: -98dBu
Maximum input: +20dBu
Phase deviation: 0° @ 100Hz; -3° @ 50Hz
Total harmonic distortion: 0.002%
Input impedance: Approx 10K with 100K Load
Output impedance: 5k Ohms
Gain: -3dB
Clip level – output: +17dBu
Stereo Separation: >77dB
   
Features    
Controls: Level control adjustable passive trim
Mono: Mixes left and right inputs
Ground lift: Disconnects audio ground at both terminals
Inputs: RCA and 3.5mm TRS stereo inputs
Outputs: Screw down terminals (- G +)
   
General    
Construction: 14 gauge steel chassis & outer shell
Finish: Durable powder coat
Size: (L x W x H) 2.42″ x 1,62″ x 4.24″ (61.4mm x 41.1mm x 107.7mm)
Weight: 0.5 lbs (227 grams)
Shipping Size: (L x W x D): 6.25″ x 4.25″ x 3″ (159mm x 108mm x 76mm)
Shipping Weight: 0.65 lbs (295 grams)
Power: Passive, no power required
Conditions: For use in dry locations only between 5°C and 40°C
Installation: Only use in low voltage systems and enclosures
Warranty: Jensen 3-year, transferable
Specifications are subject to change without notice.

Graphs

Phase Shift
Frequency Response
Distortion vs Frequency
Distortion vs Output

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