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The
JPC offers a myriad of input connector options to simplify
interfacing your computer, DVD/CD, MP3 player or other consumer
audio device with the world of AES standard professional
ballanced equipment. As with all Radial products, only the
highest professional standards are used inside and out,
in circuitry and construction.
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Inside
the JPC |
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1. |
Isolated
XLR connectors to eliminate chassis ground potential. |
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2. |
Active
balanced circuit drives long cable runs without
signal loss. |
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3. |
Audio
Transformers on both inputs provide 100% isolation
to eliminate hum and noise causing ground loops. |
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4. |
14-Gauge
steel welded I-beam construction makes it impossible
to torque the PC board. |
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5. |
High
grade switches - long life, high cycle for reliable
performance. |
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6. |
Military
spec PC board with full surface ground plane to
reduce RF noise susceptibility. |
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Input
and Output Panels |
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7. |
–10dB
pad reduces the level going into the JPC from loud
sources that could overload the circuit and cause distortion. |
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8. |
48V
Power on LEDs lets you know that phantom has been
turned on and is powering the two channels. |
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9. |
1/4”
connectors for each channel in parallel with RCA
and 1/8" connectors |
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10. |
1/8”
TRS (stereo) connector designed for PCs and laptops,
makes connection easy with standard 1/8” to 1/8”
cable. |
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11. |
Twin
RCA connectors are great for connecting DVD/CD
players and video machines. RCA thru-puts for flexibility. |
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12. |
Book-end
design creates a protective zone around the switches
& connectors – Indestructable 14-gauge steel construction.
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13 |
Ground Lift switch - recessed to prevent accidental
operation. Disconnects the ground path to the transformer
at the XLR output. This is used when a ground path is made
at the input side such as with a computer or rack module. |
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14. |
Full
no-slip rubber bottom pad provides mechanical isolation,
electrical insulation and ‘stay-put-ability!’ |
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15. |
Twin
balanced XLR male output connectors; AES standard
with Pin-1 ground and Pin-2 hot. |
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Construction
The
JPC is designed to withstand the rigors of high-use professional
environments! Radial's innovative book-end design provides
a protective zone around the switches and connectors that
makes it practically impossible to damage these components.
Stress
on circuit boards causes broken and intermittant solder
joints and is a common cause of failure in lesser DI's.
Radial's 14-gauge welded I-beam inner chassis and 14-guage
outer shell greatly reduce the possibility of torque stress
being applied to the PC board.
A
full-bottom no-slip rubber pad works double duty by (a)
providing protection from electrical shock from (eg:)
guitar amp handles which are often directly coupled to
the amp chassis, and (b)
assuring that the J48 won’t slip and slide around.
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Like
all Radial DI's, the JPC features a mil spec PC
board, high-use switches & connectors, 14-guage
welded internal I-beam chassis wrapped in a 14-gauge
'bookend' outer shell and baked enamel finish. Virtually
Indestructable! |
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JPC
SPECIFICATIONS |
| Frequency
range: |
40Hz
to 20kHz , (+/- 3dB) |
| Circuit
type: |
Active
with isolated inputs |
| Powering:
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48-Volt
phantom powered, 5mA draw |
| Input
connections: |
1/4”
TRS, 1/8” TRS, twin RCA, with switched -10dB
pad |
| Output
connections: |
XLR
balanced, AES standard pin configuration |
| Input
level (max): |
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| Output
level: |
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| Dynamic
range: |
80dB
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| Distortion: |
0.5%
at 1kHz with -10dB input |
| Intermodulation
distortion: |
Less
than 1% |
| Phase
distortion: |
Less
than 5º at 100Hz, 0.1º at 1kHz |
| Linear
response: |
+/-
1dB from 50Hz to 15kHz
+/- 3dB from 20Hz to 20kHz |
| Construction: |
14-gauge
steel chassis & shell, baked enamel finish |
| Size: |
3-5/16"
x 5” x 1-7/8" (84mm x 127mm x 48mm) |
| Weight: |
2.6lb
(1.8kg) |
| Warranty: |
3
years, limited (see owner’s manual for details) |
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