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    Radial J48 mk2 Active DI Box

    Welded I-beam construction, military-grade PC board, -15dB pad
    Product Rated 9.3 Out of 10 (1 rating)
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    Web Item #RADJ48

    Radial J48 mk2 Active Direct Box

    More Resources

    Manuals and Documents: Smart Sheet User Manual
    Radial Warranty: If you have additional warranty questions, please call the manufacturer at 604-942-1001
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    This product ships to: Can ship to United States

    60-Day Return Policy Applies on This Item - Get it shipped today and if it isn't perfect, send it back!

    Payment Options We DO NOT COLLECT TAX except on orders shipped to New Jersey.

    Radial J48 MK2 Active 48-Volt Phantom Power Direct Box Product Description

    The Radial J48 is a great sounding active direct box that has been optimized to produce maximum headroom while working within the limited current available from standard 48V phantom power. By employing a unique switching power supply, the J48 is capable of peak transients to 9 volts without choking. The result is lower harmonic distortion, half the inter-modulation distortion and significantly improved dynamics over other DIs.

    Features include a -15dB pad, 180 degree polarity reverse, a unique merge function to mix two signals to mono, an 80Hz high-pass rumble filter, and ground lift. Like all Radial products, the J48 is built to handle the abuse on the road and features a unique welded I-beam construction for years of trouble free performance.

    The single most important development goal of the Radial J48 was increasing the headroom without compromising sound quality. To this end, every possible effort was made to deploy the limited energy resources of phantom power to the audio signal path.

    To begin, phantom power is converted using a super-efficient digital switch-mode power supply that steps up the internal rail voltage to an impressive 10 volts. This allows one to hit the J48 with as much as 9-Volts without choking! To further increase available horsepower, all non-essential devices such a power-hungry LEDs are turned off when the J48 is in use. A typical LED requires almost as much current as does the complete audio circuit!

    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

    Same Day Music is an authorized dealer of Radial products.

    Radial J48 MK2 Technical Description

    Dynamic range: 130dB

    Signal to noise: 119dB@100Hz

    Maximum input: 10V

    Frequency range: 10Hz to 40kHz

    Linearity 20Hz to 20kHz: 0.1dB

    Phase coherence:
    10 degrees at 20 Hz
    0 degrees at 1kHz

    Distortion at 20Hz: < 0.5%

    Input impedance: 220k ohms

    Output impedance: 600 ohms

    Construction: Welded steel

    Finish: Baked enamel

    Input connectors: Two 1/4 in. phone

    Output connectors: XLR male

    Same Day Music is an authorized dealer of Radial products.
    Shipping Weights and Dimensions
    Shipping Weight: 2 lbs
    Shipping Dimensions: 7 x 4 x 3 in

    User Reviews for Radial J48 MK2 Active 48-Volt Phantom Power Direct Box

    Product Rated 9.3 Out of 10 (1 rating)
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