Radial Engineering JDV MK3 Owner's Manual

>>>>>>>> CAUTION <<<<<<<<
PLEASE READ BEFORE CONNECTING ELECTRONIC DEVICES TO YOUR JDV!
Caution must be used when connecting electronic equipment to the
JDV Mk3. The JDV Mk3 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 JDV
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 JDV is connected or used. It is the users full responsibility to
ensure that proper electrical polarity is maintained on all equipment
connected to the JDV and that proper building electrical codes have
been followed wherever the JDV is being used.
To reduce opportunity for shock hazard or damage to the JDV or
connected equipment, plug the ¼" connectors into the amplifiers
first and then to the JDV. 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:
Before connecting the JDV to an 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: Test for voltage potential by connecting a voltmeter
between the amplifier chassis and the JDV 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 JDV or other
connected equipment caused by improper A/C polarity is not
covered under warranty.
e e n n g g i i n n e e e e r r i i n n g g
Radial Engineering - 1638 Kebet Way, Port Coquitlam BC V3C 5W9
tel: 604-942-1001 · fax: 604-942-1010
Radial Engineering is a division of JP Cabletek Electronics Ltd.
email: info@radialeng.com
e n g i n e e r i n g
Radial JDV Mk3 Direct Box
Owner's manual
Radial Engineering
1638 Kebet Way, Port Coquitlam BC V3C 5W9
tel: 604-942-1001 · fax: 604-942-1010
email: info@radialeng.com web: www.radialeng.com