Radial Engineer R8001012 JDI Stereo, Passive Stereo DI w/ Jensen Transformer

The Radial JDI Stereo is a two channel passive direct box that is equipped with two Jensen audio transformers. These amazing devices not only balance the signal, but also lower the impedance to allow long cable runs without noise. Each transformer features a unique nickel core stack, proprietary winding technique, dual faraday shields to eliminate high frequency noise, and a protective outer MuMETAL can to protect against external fields. This results in exceptionally low distortion of all types while being able to handle extreme transients at all frequencies. With its heavy-duty steel shell and internal I-beam construction, the JDI Stereo is designed to work dependably for years in even the harshest of touring environments. The JDI Stereo is quite simply the worlds finest passive stereo direct box.

Applications

Two basses connected to amps and PA
The JDI Stereo is perfect for sending the pure bass signal to the PA system. Use the Thru connectors to feed two channels on your amp.

Stereo laptop with controller keyboard
The Jensen equipped JDI Stereo is able to gracefully handle extreme transients from your digital piano, laptop or DJ mixer without choking.

Two acoustic guitars connected to the PA
The smooth sounding Jensen transformers smooth out the peaks from your acoustic guitar to produce a nice rich, warm tone.

Features

• Jensen transformer equipped passive DI
• Eliminates hum and buzz from ground loops
• Virtually zero phase & harmonic distortion
• Exceptional signal handling and noise rejection
• Compact stereo format for twice the performance

FAQ

How does the JDI Stereo compare to the original JDI?
The audio signal path is identical, except that it is two channels and has a few less features due to limited space.

How does the JDI Stereo compare to the Duplex?
The audio signal path is identical, except that the Duplex has extra features to provide a greater degree of connectivity options.

What is the benefit of using the JDI Stereo over the JDI and Duplex?
The compact size is convenient, particularly given the number of stereo sources being used today. Further, since so many acts fly from one gig to another, smaller is often better!

Why is the output from the JDI Stereo set to mic level?
Since all of the microphones on stage are mic level, matching the output when DIs are in use makes patching things much easier. Matching the levels also helps keep crosstalk in the cable down.

Will 48V DC phantom power harm the JDI Stereo?
No. The transformers will block the DC without any concern.

Does the JDI Stereo have a stereo to mono Merge function?
No. This passive function can be found on the JDI and Duplex.

Can I use the JDI stereo with PCs and other consumer electronic devices?
Yes. You merely need to find the proper adaptor cable to suit the inputs.

Will 48V DC phantom power harm the JDI Stereo?
No. The transformers will block the DC without any concern.

Specs

• Audio circuit type: Passive, transformer based
• Transformer: Jensen JT-DBE
• Number of channels: Two channels (dual mono)
• Frequency response: 20Hz ~ 20KHz ( 0.2dB)
• Dynamic range: 135dB
• Total harmonic distortion: 0.05% from 20Hz ~ 20kHz @-10dB
• Phase Deviation: 0.3 @ 100Hz; 3 @ 20Hz
• Input Impedance: 140k Ohms, unbalanced
• Output Impedance: 150 Ohms, balanced
• Maximum Input: +21dB @ 20Hz ~ 20kHz
• Features
• Input pad, Ground lift
• Input Connectors: Unbalanced 1/4″
• Output Connectors: XLR out, 1/4″ thru
• General
• Construction: 14 gauge steel chassis & outer shell
• Size (L x W x D): 5″ x 3.3″ x 1.8″ (127mm x 84.1mm x 45.5mm)
• Weight: 1.55 lbs (703 grams)
• Shipping size (L x W x D): 6.5″ x 4″ x 3″ (165mm x 102mm x 76mm)
• Shipping weight: 1.92 lbs (870.9 grams)
• Power: Passive, no power required
• Conditions: For use in dry locations only between 5C and 40C
• Warranty: Radial 3-year, transferable