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True to the Music
JD7
Guitar Signal Distribution & Routing System
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Radial Engineering Ltd.
1165-1845 Kingsway Ave, Port Coquitlam BC V3C 0H3
Tel: 604-942-1001 • Email: info@radialeng.com
JD7 owner's manual v3.0 06/2025 Part #: R870 1015 00
www.radialeng.com
Specifications and appearance are subject to change without notice.
Copyright © 2025 Radial Engineering Ltd.
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Summary of Contents for Radial Engineering JD7
- Page 1 Radial Engineering Ltd. 1165-1845 Kingsway Ave, Port Coquitlam BC V3C 0H3 Tel: 604-942-1001 • Email: info@radialeng.com JD7 owner’s manual v3.0 06/2025 Part #: R870 1015 00 www.radialeng.com Specifications and appearance are subject to change without notice. Copyright © 2025 Radial Engineering Ltd.
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Page 2: Table Of Contents
120V present between the amp chassis and ground. Radial Engineering takes no responsibility for this or how the JD7 is connected or used. It is the users full responsibility to ensure that proper electrical polarity is maintained on all equipment connected to the JD7 and that proper building and electrical codes have been followed wherever the JD7 is being used. -
Page 3: Introduction
The Radial JD7 is a guitar signal distribution amplifier that has been optimized to retain the original sound of the instrument so that the connection is the same as if the guitar was plugged directly into the amp. The JD7 is also a unity gain device. -
Page 4: Features
INPUT 2: High impedance 1/4" jack used for a second guitar, equipped with priority switching jack. OUTPUT 1: Primary output, used to ground the guitar to the JD7 via the first amp. Equipped with an on/off switch. OUTPUTS 2-4: Transformer isolated outputs used to drive multiple amps. Equipped with on/off switch, ground lift to reduce noise and a 180°... -
Page 5: Rear Panel Features
REAMP INPUT: Accepts a balanced line-level signal and converts it to an instrument-level signal that can drive pedals and amplifiers via the JD7 outputs. Equipped with a ground lift switch to eliminate noise and a variable input level attenuator. Activated when Input-2 is selected and no cable is connected to the front panel Input-2 1/4"... -
Page 6: Getting Started
The JD7 has no power on/off switch: once it is connected to a power source, the unit will be ready for use and the front panel LED indicators for any active outputs will illuminate. -
Page 7: The Output Section: Output 1
The rear panel Effects Loop connections The SEND output feeds the JD7 input signal out to your pedals, while the RETURN jack connects to the output of your pedal effects. These rear panel connections are normalling jacks, so if nothing is connected to them the front panel LOOP switches will have no effect. -
Page 8: The Aux Output
To use this input, connect a balanced output from your recording interface to the XLR Reamp input on the JD7, then press the front panel “INPUT-2” switch to activate the Reamp input and ensure that you don’t have a 1/4"... -
Page 9: Specifications
Shipping size (L x W x D): ..............22” x 10.375” x 4.5” (55.cm x 26.4cm x 11.4cm) Shipping weight: ...................8lb (3.63kg) Power: ....................15VDC / 400mA center-pin positive adaptor included Conditions:....................For use in dry locations only between 5°C and 40°C Warranty: ....................Radial 3-year, transferable *Specifications are subject to change without notice. Radial Engineering Ltd. JD7 Owner’s Manual... - Page 10 Radial Engineering Ltd. JD7 Owner’s Manual...
- Page 11 Radial Engineering Ltd. JD7 Owner’s Manual...
- Page 12 RADIAL ENGINEERING LTD. 3 YEAR TRANSFERABLE WARRANTY RADIAL ENGINEERING LTD. (“Radial”) warrants this product to be free from defects in material and work- manship and will remedy any such defects free of charge according to the terms of this warranty. Radial will repair or replace (at its option) any defective component(s) of this product (excluding finish and wear and tear on components under normal use) for a period of three (3) years from the original date of purchase.
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