JDI Duplex
DI Box
From Radial Engineering:
The JDI Duplex is a high performance 2-channel passive direct box designed for enhanced connectivity for any application, with numerous input connector types and premium Jensen transformers for exceptional audio performance.
The JDI Duplex takes the exceptional transparency and wide bandwidth of the JDI Stereo passive direct box, and adds numerous connector types and line-level inputs to provide the audio technician with the ability to interface with any stereo sound source. Designed to handle extreme signal levels without distortion, it utilizes two world-class Jensen JT-DB-EPC audio transformers to deliver a smooth, warm sounding Bessel curve - reminiscent of the finest vintage gear. Ruler flat from 10Hz to 40kHz and with virtually zero phase deviation, the JDI Duplex delivers the natural, pure sound of the instrument without artifact. The inputs can be accessed via 1/4", RCA, 3.5mm TRS, or XLR line-level connectors, making it easy to plug in any sound source, from stereo instruments to consumer playback equipment, or professional +4dB line-level audio equipment.
Whether you have a CD player, iPod, computer or professional +4dB balanced source, the Duplex can handle any situation.
Specs
- Audio circuit type
- Passive, transformer based
- Transformer
- Jensen JT-DBE
- Number of channels
- 2
- Frequency response
- 20Hz ~ 20kHz at +/- 0.2dB
- Dynamic range
- 135dB
- Total harmonic distortion
- 0.001%; 1kHz/+4dBu; 600 Ohm load
- Phase deviation
- -1° @ 20Hz; 0.5° @ 150Hz; 600 Ohm load
- Input impedance
- 140k Ohm PAD off; 10k Ohm PAD on
- Output impedance
- 600 Ohms
- Maximum input
- +20dB @ 1kHz
- Features
- Input pad, Mono Sum, 180° polarity reverse, Ground lift
- Input connectors
- 1/4", RCA, 3.5mm, XLR
- Output connectors
- XLR, 1/4" thru
- Extras
- Line Level or hi-Z input
- Construction
- 14 gauge steel chassis & outer shell
- Size (L x W x D)
- 160mm x 48 x 127mm (6.3" x 1.9" x 5")
- Weight
- 1kg (2.2lbs)
- Power
- Passive, no power required
- Conditions
- For use in dry locations only between 5°C and 40°C
Source: Radial JDI Duplex specifications page