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Table of Contents:
Concept & introduction.........................................................
Power connections, connecting guitars and amps ..................
Input section, 'Drag' control...................................................
Output section, effects loops.................................................
Rear panel, balanced low Z input & output, labeling ...............
Remixing description and diagram.........................................
JD•7 questions and answers ................................................
JD•7 specifications & dimensions ..........................................
JD•7 Setup Saver.................................................Back Cover
Caution must be used when connecting electronic equipment to the JD7. The JD7 bridges all electronic
equipment connected to it so faulty wiring or incorrect grounding of any of the equipment may cause a
shock hazard to be present and/or damage to the JD7 or other connected equipment. Because grounding
schemes differ between manufacturers, it is important to check for correct polarity, in particular with older
amplifiers using 2-prong ungrounded A/C cords. If the polarity is reversed on an ungrounded amplifier
there may be a potential of 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
electrical codes have been followed wherever the JD7 is being used.
To reduce opportunity for shock hazard or damage to the JD7 or connected equipment, plug the ¼"
connectors into the amplifiers first and then to the JD7. This is especially important when using old
amplifiers that do not have 3-prong plugs as the possibility exists to touch the chassis ground with the
connector plug tip when the plug is inserted into the jack.
Cautions for amplifiers with ungrounded 2-prong A/C cords:
ungrounded amplifier, power the amp up and listen to the residual hum. If the amp has a two-position
ground polarity reverse switch, set the switch in the position that produces the least residual hum from the
speakers. If there is no polarity switch, reverse the A/C plug at the outlet to find the least residual hum.
To ensure an ungrounded amplifier does not present a shock hazard:
connecting a voltmeter between the amplifier chassis and the JD7 chassis. If voltage is present, reverse
the amplifier's A/C supply polarity and test again.
Note that due to this potential problem, damage to the JD7 or other connected equipment caused by
improper A/C polarity is not covered under warranty.
RADIAL LIMITED THREE YEAR WARRANTY
Radial Engineering - a division of JP Cabletek Electronics Ltd. ("Radial") warrants this product to be free from defects in material and
workmanship to the original owner 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. In the event that a particular product is no longer available, Radial reserves
the right to replace the product with a similar product of equal or greater value. To make a request or claim under this limited warranty, the
productmustbereturned prepaid in the original shipping container (or equivalent) to Radial or to an authorized Radial repair centre and you
must assume the risk of loss or damage. A copy of the original invoice showing date of purchase and the dealer name must accompany any
request for work to be performed under this limited warranty. This limited warranty shall not apply if the product has been damaged due to
abuse, misuse,misapplication, accident or as a result of service ofmodification by any other than an authorized Radial repair centre.
THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE FACE HEREOF AND DESCRIBED ABOVE. NO
WARRANTIES WHETHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL EXTEND BEYOND THE RESPECTIVE WARRANTY
PERIOD DESCRIBED ABOVE OF THREE YEARS.
RADIAL SHALL NOT BE RESPONSIBLE OR LIABLE FOR ANY SPECIAL OR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF
LOSS ARISING FROM THE USE OF THIS PRODUCT. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY
ALSO HAVE OTHER RIGHTS,WHICH MAY VARY, FROM STATE/PROVINCE TO STATE/PROVINCE.
Radial Engineering 1638 Kebet Way, Port Coquitlam
email: info@radialeng.com web: www.radialeng.com
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Before connecting any input to an
Test for voltage potential by
BC Canada V3C 5W9
Radial Engineering is a division of JP Cabletek Electronics Ltd.
JD•7 Owner's manual
tel: 604-942-1001 · fax: 604-942-1010
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