JD6™ Specifications

The Radial JD6 is a multi-channel passive direct box that has been specifically designed to address the needs of concert touring, while being equally at home in the studio. The JD6 houses six completely independent transformer isolated channels for minimal cross-talk and maximum protection against noise, 60 cycle hum and buzz or hum caused by ground loops. The JD6 employs the finest Jensen® audio transformers for absolute performance while delivering the warmth and character that has made Radial the world's most revered direct box producer. The JD6 employs the same audio circuit as the renowned Radial JDI for explosive signal handling, virtually zero phase distortion and a truly linear response.

Radial JD6 Block Diagram
Click to view larger image.
Radial Green Report
The Radial Green Report
In effort to provide the more discerning audio engineer with all of the technical support materials to make a proper and informed decision, we have produced the Radial Green Report. This provides in-depth distortion tests and analysis of four popular direct boxes.
Click here to view pdf
Specifications    RADIAL JD6
Audio Circuit Type:  Passive, transformer based
Number of Channels: Six channels
Frequency Response:  20Hz ~ 20KHz (± 0.2dB)  
Dynamic Range:  135dB 
Maximum Input:  +21dB @ 20Hz 
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 
Transformer: Jensen JT-DBE, 12:1 ratio
Shield: MuMETAL® can with internal Faraday shield
Input Pad:  -15dB  
Merge:  Sums left & right sources to mono (Ch. 1 & 2 only)
180° Polarity Reverse:  Inverts absolute phase
Ground Lift:  Disconnects pin-1 at XLR output 
XLR Configuration:  AES standard (pin-2 hot) 
Connectors (Ch. 1 & 2): RCA L/R in, 1/4" in & thru, XLR-M out
Connectors (Ch. 3 ~ 6): 1/4" in & thru, XLR-M out
Construction:  14-gauge steel chassis & outer shell
Finish: Durable powder coat
Size (L x W x H): 19" x 6.25" x 1.75" (48.3cm x 15.875cm x 4.45cm)
Weight:  3.6 kg (8 lbs)
Shipping Size (L x W x H): 22" x 10.375" x 4.5" (55.9cm x 26.4cm x 11.4cm)
Shipping Weight: 3.7 kg (8.15 lbs)
Power:  Passive, no power required 
Conditions: For use in dry locations only between 5°C and 40°C
Warranty:  Radial 3-year, transferable
Specifications are subject to change without notice.
Click Here for Graph Guide
Click graph to view larger