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
Radial Engineering is a division of C•TEC (JP CableTek Electronics Ltd.)
www.radialeng.com
JPC
User Guide
JPC USER GUIDE
Consumer To Pro Stereo Direct Box
TABLE OF CONTENTS PAGE
Introduction ............................................................................. 1
Input & output panel feature set .............................................. 2
Inside view & features ............................................................. 3
Design concept ....................................................................... 4
Development ........................................................................... 5
Block diagram and specifications............................................ 8
Frequently asked questions .................................................... 9
Warranty.................................................................................. Back cover
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
Radial Engineering Ltd. is a division of
Features and specifications are subject to change without notice.
JPC - Manual V1.0 part#: R800-9631-00
C•TEC
(JP CableTek Electronics Ltd.)
True to the Music
INTRODUCTION
Congratulations on your purchase of the Radial JPC Stereo
Direct Box
The Radial JPC™ is an active ‘consumer to pro’
stereo direct box specifically developed for
computer sound cards and electronic media. It
features 1/4” TRS, 1/8” TRS and dual stereo
RCA input connectors. All of which may be
used as inputs, or thru-puts. The XLR
outputs are transformer isolated to
eradicate hum and buzz caused by ground
loops. The JPC is 48V phantom powered,
eliminating the need for batteries while
allowing long cable runs. The compact
yet ultra-rugged bookend design allows
the Radial JPC to be used in the most
demanding rental and touring
environments.
We invite you to read through this manual
before using your Radial J48 so that you can
maximize it’s potential. Please log onto
www.radialeng.com for further details and
updates. We also invite you to forward any
comments, questions or suggestions to
info@radialeng.com. We love to hear from you!
True to the Music
Enjoy.
Radial Engineering JPC User Guide
1
True to the Music
INPUT PANEL FEATURES
1. –10dB pad reduces the level going into the JPC from
loud sources that could overload the circuit and cause
distortion.
2. 48V Power on LEDs lets you know that phantom has
been turned on and is powering the two channels.
3. 1/4” TRS connecter that will also work with ¼” mono
instrument signals!
4. 1/8” TRS stereo connector designed for PCs, laptops,
and personal music players makes connection easy with
1/8” to 1/8” cable.
5. Stereo RCA connectors are great for connecting CD
players and video machines. RCA thru-puts for flexibility.
OUTPUT PANEL FEATURES
6. Stereo ground lift toggle switch (on side).
7. Twin XLR male output connectors follow AES standard
with Pin-1 ground and Pin-2 hot.
8. No-slip full rubber bottom provides mechanical isolation,
electrical insulation and ‘stay-put-ability’!
9. Bookend design with baked enamel finish. 14 gauge
steel outer shell creates protected zone around
connectors and switches. Finished in tough baked
enamel for years of great ‘looking’ performance.
Radial Engineering JPC User Guide
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INSIDE VIEW
10. Isolated XLR connectors to eliminate chassis ground potential.
11. Active balanced drive circuit for long cable runs without signal loss.
12. Transformers on both inputs provide 100% isolation to eliminate hum and noise causing ground loops.
13. Military grade PC board with full surface ground plane to reduce RF noise susceptibility.
True to the Music
14. Long life, high cycle rated push switches for reduced maintenance.
15. Welded I-beam construction makes it impossible to torque the PC board and provides maximum resistance
against cold solder joints.
Radial Engineering JPC User Guide
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