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Accessories > Tool Box > Direct Boxes > Radial JDI Radial JDI Jensen Transformer Equipped Passive DI »CLICK TO ENLARGE   ItemID: JDI   Retail Price: $220.00 SAVE $20.01 WHEN YOU BUY TODAY! SALE PRICE: $199.99 Add the JDI to Your Wishlist Yes, It's In Stock! This item is available for immediate delivery. Our centrally-located warehouse ensures you the fastest delivery time in the industry. Order now by adding to your cart or call your Sales Engineer.   Payments as low as $10/ mo. Customers also looked at...   Radial JD6 6-Ch Passive DI Box w/Jensen $899.99     Radial ProDI Passive Mono DI Box $99.99     Radial ProD2 Passive Stereo DI Box $149.99   » View all Radial » View all Direct Boxes

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JDI DESCRIPTION

JDI Details: - JDI Description - JDI Specs JDI Reviews: - Sweetwater Expert Advice - (1) Customer Review - Write your own review Have More Questions? Call toll-free (800) 222-4700 or click here to email a Sweetwater Sales Engineer about the Radial JDI.

One of the Finest Passive DI's Available Anywhere! The Radial JDI is considered by many to be the world's finest direct box. It is a passive DI that employs a Jensen isolation transformer for optimum audio performance offering outstanding linearity at all frequencies, combined with extraordinary level handling without introducing distortion. Being completely passive, the plug & play JDI does not require any powering and has the unique advantage of eliminating 60-cycle ground loops. This makes the JDI a definite favorite with informed audio engineers. The JDI is great for guitars, bass, and keyboards and is particularly adept with high-output, broadband instruments such as active instruments and digital keyboards. Radial JDI at a Glance: Jensen Transformer equipped passive DI. 100% isolation eliminates ground loops. Virtually zero phase & harmonic distortion. Exceptional signal handling. High common mode noise rejection. Welded I-beam construction. Jensen Transformer Equipped The Radial JDI is a passive direct box that employs the world's finest Jensen JT-DBE transformer as its main drive engine. The Jensen DBE transformer employs a laminated nickel core that has the distinct advantage of low-permeability. Permeability is a term that describes the metals ability to become magnetized and demagnetized without retaining any magnetic memory. When one considers that full bandwidth audio is made up of a series of fundamentals and harmonics that range from 20Hz to 20kHz all of which 'move' in tandem, disrupting their relationship is not a desired effect! This underscores the importance of a very high quality transformer and Radial's decision to use a Jensen. The input panel features a 1½4" instrument input and traditional thru-put. An innovative 'merge' function allows the thru-put to be converted to a second input to allow stereo to mono summing. This is often used to interface stereo sources such as keyboards or CD players in live shows where audio channels may be not always be plentiful. The JDI also sports a -15dB pad to interface with higher output levels. The output panel features balanced 600 Ohm XLR connector with pin-2 hot following the AES specification. A polarity reverse switch toggles pin-2 and pin-3 to allow the JDI to interface with older non-AES equipment and for creative tinkering. The ground lift switch disconnects the XLR pin-1 ground from the JDI for 100% input-to-output isolation. Finally, a second -30dB pad may be engaged that, when used in tandem with the -15dB input pad, allows the JDI to be connected in parallel with a speaker. This, for instance, allows the engineer to 'tap' the sound coming from a guitar amplifier speaker 'post distortion' thus adding another creative dimension. This unique function incorporates a speaker emulation filter circuit that rolls off highs and lows to more closely approximate the sound of a 12" driver. Construction As with all Radial direct box, the Radial J48 is designed for use in abusive environments such as on fast-paced stages of concert touring. An innovative book-end design provides a protective zone around the switches and connectors that makes it practically impossible to damage these components. The inner skeletal frame features a unique 14-gauge welded I-beam construction that makes it impossible to torque the PC board. Stress on the printed circuit board can introduce intermittent solder joints, which by all accounts is the primary cause of direct box failure. An innovative full-bottom no-slip rubberized pad works double duty by assuring the J48 won't slip and slide around when placed on an amplifier. The protective pad also ads an element of electrical shock resistance by providing a mechanical shield from guitar amp handles that are often directly coupled to the amp chassis. If you want the legendary Radial quality, but would prefer more channels, check out the Radial JD6. Radial JDI Features: Welded I-beam construction makes it impossible to torque the PC board. This virtually eliminates cold solder joints - the No.1 cause of system failure in the field. An innovative 'slide-in-place' XLR trace makes it possible to use I-Beam girder construction. The JDI uses a Jensen transformer for distortion-free performance. The Jensen features a nickel core for best signal transfer and minimal loading. A military-grade PC board is employed for maximum wear and tear in abusive environments. Welded steel standoffs ensure the PC board will not shift.        A -15dB pad allows super hot inputs such as that from a CD player to be connected and balanced for long runs. The Merge function turns the input and thru into a passive mixer to sum stereo feeds to mono at the XLR output. This saves valuable inputs on the mixer! The input connects to the instrument. The thru-put is connected to the instrument amplifier. The JDI has a high input impedance to reduce loading. Our book-end design creates a protective zone around the switches & connectors for best protection! A heavy-duty baked enamel finish for excellent durability and great looks for years! 100% 14-gauge steel construction. The XLR balanced mic level output provides 100% isolation for runs to 1000 feet without appreciable noise. A polarity reverse switch flips the polarity from the AES standard Pin-2 to Pin-3 on the XLR and is used when combining sounds that may be out of phase. The ground-lift disconnects the ground path to the transformer at the XLR output. This is used when a ground path is made at the input side such as with a keyboard. The parallel speaker interface option introduces a second -30dB pad with band-pass filter to emulate a 12" guitar speaker. A no-slip full bottom pad reduces mechanical vibration, improves electrical isolation and keeps the JDI from moving around on busy stages! Virtually zero-phase distortion, exceptional signal handling and the advantage of true isolation to eliminate hum makes the Radial JDI the choice for live sound reinforcement. Customer Reviews  Great Passive DI   by Jordan Wolf from Huntington, IN, October 02, 2007 Music Background:  Audio Technician/Student “I had been mulling over which DI to get and I chose to get this one. I know of Jensen transformers' reputation so I figured that a DI with one would be a great investment. As a passive DI, this thing rocks! The merge function is fantastic and I'm so glad that it can handle practically any level thrown at it with ease and without distortion. My next investment will be a good active DI for...” Read More • Write Your Own Review Sweetwater Expert Advice     "I use the JDI in my recording studio for a variety of instruments. The big features for me are the Jensen transformer and the extremely low phase artifacts. Excellent for ultra-clean guitar or bass tones. This is THE best passive DI I have ever used." Craig Wilson   "This JDI is an answered prayer to sound guys. Even though it's passive, the Jensen transformer allows for completely transparent level transformation. If you need the best passive DI, get the JDI, or JDIduplex. You'll be glad you did. Also it doesn't hurt that they are built like a tank, literally (but no turret). Another cool uniqueness about the JDI/duplex is that it can be put in parallel with a speaker allowing for capturing the guitar sound after it's been distorted by amp AND speaker! ANOTHER cool function is the JDI's "merge" that allows a stereo device to be merged correctly into mono and sent out the JDI's output. Another cool thing is... ok, I'll stop. Just get one, you'll see! (or hear!) " Kenny Bergle More Direct Boxes from Radial: · Radial ProDI · Radial ProD2 · Radial ProAV2 · Radial J48 · Radial ProRMP · Radial X-Amp · Radial SGI Studio Guitar Interface · Radial JDI Duplex · Radial JPC · Radial ProAV1 View All Products from Radial  Tell a Friend About the JDI!  Print This Page See Also:  DI Units

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