Accessories » Essential Audio Tools » Direct Boxes» Radial JPC 2-channel Active Instrument Direct Box

Radial JPC 2-channel Active Instrument Direct Box

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Why We Love This Product!

DI for Your Sound Card and Gear!

The Radial JPC is a two-channel hybrid direct box designed to address the demand for interfacing computer sound cards, consumer electronics and other gear to pro sound systems. The JPC features two active 48V phantom powered channels in a small, rugged enclosure. The JPC combines an active drive circuit, for long cable runs, with transformer isolated ins to eliminate hum and buzz caused by ground loops.


Radial JPC at a Glance:
    • Stereo DI for computer sound cards & A/V.
    • Transformer isolation eliminates ground loops.
    • Active drive circuit for long cable runs.
    • Small design - may be J-Rak mounted.
    • 48V phantom power eliminates batteries.
    • Converts -10db to balanced XLR microphone level.
    • Ultra rugged 14-gauge steel construction.


Stereo PC/AV DI
The Radial JPC is a stereo direct box that has been specifically designed for use with computer sound cards and other consumer electronic products to allow these to be connected to a pro sound system. It is one-of-a-kind in that it combines the advantages of transformer-isolated ins with an active drive circuit, giving you the 'best of both worlds' in a small and extremely flexible package.

Isolation Eliminates Ground Loops
Transformer coupled ins have the one-of-a-kind advantage of isolating the 'source' from the 'destination'. This proven approach eliminates 60-cycle hum and buzz caused by so-called ground loops when two pieces of electrically powered devices are connected together. Because the active circuit does all of the impedance conversion and balancing, a dedicated 1:1 transformer can be used. This results in a hybrid design that is at once killer sounding, small and more value-packed.

48V Phantom Power
As with all killer designs, simplicity is a fundamental trait and the Radial JPC certainly fits the bill. A choice of stereo 1/4", 1/8" and RCA in AND thru-put connectors make interfacing a snap with all types of gear. One switch inserts a -10dB pad, two power LEDs confirm 48V phantom is turned on, and a pair of XLR out connectors round out the feature set.

Ultra Rugged Construction
Naturally like all Radial products, the JPC is made to handle any environment. The book-cover wrap-around sleeve design protects switches and connectors from damage while the 14 gauge steel I-beam construction eliminates stress that could torque the PC board and cause solder joint failure. A full-bottom no-slip pad has electrical insulation and mechanical isolation with plenty of 'stay-put' for use on hectic stages. And with its baked enamel finish, the Radial JPC will continue looking sweet for years!


Radial JPC Features:
    • Isolated XLR connectors to eliminate chassis ground potential.
    • Active balanced circuit drives long cable runs without signal loss.
    • Audio Transformers on both inputs provide 100% isolation to eliminate hum and noise causing ground loops.
    • 14-Gauge steel welded I-beam construction makes it impossible to torque the PC board.
    • High grade switches - long life, high cycle for reliable performance.
    • Military spec PC board with full surface ground plane to reduce RF noise susceptibility.
    • A -10dB pad reduces the level going into the JPC from loud sources that could overload the circuit and cause distortion.
    • 48V Power on LEDs lets you know that phantom has been turned on and is powering the two channels.
    • 1/4" Tip-ring-sleeve connector that will also work with 1/4" mono instrument signals!
    • 1/8" Tip-ring-sleeve connector designed for PCs and laptops, makes connection simple with standard 1/8" to 1/8" cable.
    • Twin RCA connectors are killer for connecting DVD/CD players and video machines. RCA thru-puts for flexibility.
    • Book-end design creates a protective zone around the switches & connectors - Indestructable 14-gauge steel construction.
    • Twin balanced XLR male output connectors; AES standard with Pin-1 ground and Pin-2 hot.
    • Full no-slip rubber bottom pad offers mechanical isolation, electrical insulation and 'stay-put-ability!'
    • Heavy-duty baked enamel finish for excellent durability and awesome looks for years!
    • Side mounted ground-lift disconnects the ground path to the transformer at the XLR out. This is used when a ground path is made at the in side such as with a computer or rack module.

Radial JPC 2-channel Active Instrument Direct Box Specs:
Type Active DI
Channels 2
Inputs 2 x 1/4", 1 x 1/8" stereo, 2 x RCA
Outputs 2 x XLR, 2 x RCA thru
Height 1.9"
Depth 5"
Width 3.3"
Weight 2.6 lbs.

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See Also: DI Boxes , Radial , Radial Direct Boxes

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