Radial Engineering JPC MK3 User Manual page 9

®
True to the Music
Dual mono 1/4" TRS input
These two unbalanced 1/4" input jacks are used with
stereo devices like electronic musical instruments and
PC audio recording interfaces that output left and right
signals on separate jacks.
A 1/4" headphone output from a stereo device may also
be connected to the JPC 1/4" inputs with a stereo-to-dual
mono adaptor cable as show to the right. Engage the PAD
Stereo 1/4" TRS connector wired to dual mono connectors
when using a headphone outputs as a source.
Using the JPC as an instrument DI
Although the Radial JPC is designed to work with
computer sound cards and other consumer level hi-
impedance devices, it can also be used with instruments
that feature active electronics such as acoustic guitars that
have a built-in pick-up and pre-amplifi er, bass guitars with
active pickups and electonic keyboards.
We do not, however, recommend using the JPC with
instruments that have passive pickups, like a standard
bass guitar or contact pezio pickups. The JPCs input
transformers will introduce impedance loading when used
with passive pickups due to the impedance mismatch.
Impedance loading will cause high frequency loss that
may be unacceptable. The Radial JDI, ProD1, J48 and
Pro48 are DIs better suited because the input impedance
is designed to match instrument with passive pickups.
An instrument with active pickups connects to the 1/4"
input. If a thru-put to an amp is required an adaptor must
be applied to the like RCA output.
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Radial Engineering JPC User Guide