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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: [email protected]

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Summary of Contents for JDI

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: ...This makes the JDI Stereo a very effective 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 So please take a few minutes to go...

Page 4: ...hannel to prevent overload 5 I BEAM REINFORCED 14 gauge steel enclosure with rigid I beam construction makes it impossible to torque the PC board and cause solder joints to go cold 6 BOOKEND DESIGN The bookend design creates a protective zone around the switches and connectors 7 XLR OUTPUTS Left and right balanced low Z mic level output Wired to AES standard pin 1 ground pin 2 hot and pin 3 cold 8...

Page 5: ...are two channels on the JDI Stereo These are identical and feature a INPUT a THRU put and a balanced XLR out Connect your source instrument to the input and the balanced XLR out to the PA system or recorder The THRU connector provides the means for connecting the instrument to a stage amp or personal monitor system Simply connect the THRU to your amp or monitor Unbalanced cables are much more susc...

Page 6: ...o called ground loops But ground loops manifest themselves in many different ways including induced DC noise into the cable from nearby power supplies or transformers DC offset currents from less than ideal electronic designs or simply a bad electrical supply that is causing havoc The Jensen transformers will block DC current while passing audio To further assist the JDI Stereo is equipped with a ...

Page 7: ...erful signal than passive sources Radial makes a number of direct boxes to handle just about any situation These differ by being active or passive and will have a different input impedance depending on the desired use As a rule the higher the input impedance the brighter or glassier the tone The lower the input impedance the warmer and smoother the tone You will note that some of this information ...

Page 8: ...half of the signal from the instrument would be sent to the mixing desk leaving very little left for the musician s amp on stage Pas sive basses would sound listless and have no punch Active D I boxes solved the problem by increasing the input impedance and buffering amplifying the signal to drive it The JDI s input impedance is 130 000Ω quite different from the old 600Ω days This means that the J...

Page 9: ... The J Rak 4 has four horizontal slots Each direct box can be front or rear mounted allowing the system designer to have the XLR s on the front of the rack or rear depending on the application The J Clamp is a mounting adapter that allows any of the Radial J Class products to be permanently mounted in loca tions such as in podiums under board room tables and inside amplifIer and effect racks Featu...

Page 10: ...ced Transformer Jensen JT DB E 12 1 ratio Shield Dual Faraday mu metal can Input pad 15dB XLR configuration AES standard pin 2 hot Construction 14 gauge steel chassis outer shell Finish Durable powder coat Size LxWxD 5 x 3 3 x 1 8 127mm x 84 1mm x 45 5mm Weight 1 55 lbs 703 grams 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 requir...

Page 11: ...Radial Engineering Ltd JDI Stereo Direct Box User Guide 9 BLOCK DIAGRAM 1 4 PHONE JACKS 1 4 PHONE JACKS GROUND LIFT GROUND LIFT PAD SWITCH PAD SWITCH TRANSFORMER TRANSFORMER ...

Page 12: ...med under this limited and transferable warranty This warranty shall not apply if the product has been damaged due to abuse misuse misapplication accident or as a result of service or modification by any other than an authorized Radial repair center THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE FACE HEREOF AND DESCRIBED ABOVE NO WARRANTIES WHETHER EXPRESSED OR IMPLIED INCLUDING BUT NOT...

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