Related Manuals for Radial Engineering JDI STEREO
Summary of Contents for Radial Engineering JDI STEREO
- Page 1 JDI STEREO USER GUIDE JENSEN TRANSFORMER EQUIPPED PASSIVE DIRECT BOX Radial Engineering Ltd. 1845 Kingsway Ave., Port Coquitlam, BC V3C 1S9, Canada Tel: 604-942-1001 • Fax: 604-942-1010 • Email: info@radialeng.com...
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Page 3: Table Of Contents
D.I. box for all types of instruments. The JDI Stereo is in fact a very easy to use direct box that is purposely made to be compact and quick to deploy. You simply plug in and it works. No power required. There are however some great features that are built in that should be understood in order to get the most out of your JDI. -
Page 4: Jdi Stereo Features
GROUND LIFT: Disconnects pin-1 at both XLR outputs to reduce hum and buzz caused by ground loops. FULL BOTTOM PAD: Isolates the D.I. from the amp chassis and keeps it from sliding around on busy stages. Radial Engineering Ltd. JDI Stereo™ Direct Box User Guide... -
Page 5: Making Connections
8 meters (25') in length is good practice while balanced cables can easily extend 100 meters (300'). The balanced output of the JDI Stereo is mic level, meaning that it should be connected to the mic input of a mixing console or mic preamp. -
Page 6: Using The Pad
The Jensen transformers will block DC current while passing audio. To further assist, the JDI Stereo is equipped with a ground lift switch that lifts pin-1 on both XLR connectors at the same time. When the electrical ground and the audio ground conflict, you can encounter noise and simply lifting the audio ground will usually solve the problem. -
Page 7: Passive Vs. Active
As a direct box, the JDI Stereo will work with almost any instrument. It is however important to understand a few fundamentals. The JDI Stereo is passive. This means that it does not require any power to make it work. This also means that it employs the signal from the source instrument as the ‘drive’... -
Page 8: Understanding Loading
The JDI’s input impedance is 130,000Ω – quite different from the old 600Ω days. This means that the JDI will not load down the pickup, which in turn means that the THRU output going to the stage amp will sound just fine. 600Ω 130kΩ 600Ω Mixing Console Mixing Console Radial Engineering Ltd. JDI Stereo™ Direct Box User Guide... -
Page 9: Optional Mounting Accessories
OPTIONAL RACK MOUNTING KITS The J-Rak 8 and J-Rak 4 are an innovative rack mount chassis. The J-Rak 8 has eight vertical slots for Radial JDI Stereo direct boxes or the other Radial J-Class products. The J-Rak 4 has four horizontal slots. -
Page 10: Specifications
Shipping size (LxWxD): ..................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 5°C and 40°C Warranty: ............................ Radial 3-year, transferable Radial Engineering Ltd. JDI Stereo™ Direct Box User Guide... -
Page 11: Block Diagram
BLOCK DIAGRAM TRANSFORMER GROUND LIFT SWITCH 1/4” PHONE JACKS TRANSFORMER SWITCH 1/4” PHONE GROUND LIFT JACKS Radial Engineering Ltd. JDI Stereo™ Direct Box User Guide... - Page 12 1845 Kingsway Ave., Port Coquitlam, BC V3C 1S9, Canada Tel: 604-942-1001 • Fax: 604-942-1010 • Email: info@radialeng.com Radial JDI Stereo™ User Guide - Part #: R870 1007 00 Copyright © 2015, all rights reserved. / 03-2022 Appearance and specifications subject to change without notice.