Radial Engineering Ltd.
JDI • Duplex User Guide
True to the Music
®
9
Block Diagram
CH-1 XLR
Line In
¼"
¼"
RCA
RCA
XFORMER
POLARITY
180º
-15dB
PAD
GND
LIFT
CH-1 XLR
OUTPUT
CH-2 XLR
OUTPUT
MERGE
-20dB
PAD
XLR-IN
Switch
CH-2
INPUT
CH-2 XLR
Line In
¼"
¼"
RCA
RCA
XFORMER
POLARITY
180º
-15dB
PAD
MERGE
-20dB
PAD
XLR-IN
Switch
CH-2
THRU
CH-1
INPUT
CH-1
THRU
3.5mm MINI
Specifications
audio circuit type:
.........................................
Passive, transformer based
number of channels:
...............................................
Dual channel (stereo)
Frequency response:
...........................................
20Hz ~ 20KHz (± 2dB)
Dynamic range:
..............................................................................
135dB
Maximum input:
................................................................
+20dB @ 1kHz
Total harmonic distortion:
...............
0.001%; 1kHz/+4dBu; 600 ohm load
Phase deviation:
...................
-1° @ 20Hz; 0.5° @ 150Hz; 600 ohm load
Input impedance - unbalanced:
.....
140k ohm PaD off; 10k ohm PaD on
Input impedance - balanced FXLR:
............................................
10k ohm
output impedance - balanced MXLR:
......................................
600 ohms
Transformer:
...................................................
Jensen JT-DB-E, 12:1 ratio
shield:
..........................................................
Dual Faraday, mu-metal can
Input pad:
..............................................
-15dB (¼" and RCa inputs only)
sum mono:
.......................................................
Resistive summing mixer
180° polarity reverse:
...............
Toggles pins 2 and 3 at the XLR outputs
ground lift:
............................................
Disconnects pin-1 at XLR output
XLR input:
....................................................
+4dB balanced female XLR
XLR configuration:
............................................
aEs standard (pin-2 hot)
Connectors:
...................
1/4", RCa, 3.5mm TRs in, XLR-F in, XLR-M out
Construction:
...................................
14 gauge steel chassis & outer shell
Finish:
.................................................................................
Power coated
size: (W x H x D)
......................
160mm x 48 x 127mm (6.3" x 1.9" x 5")
Weight:
..................................................................................
1kg (2.2lbs)
shipping size: W x H x D:
........
210 x 159 x 83mm (8.25" x 6.25" x 3.25")
shipping Weight:
...........................................................
1.43 kg (3.15 lbs)
Power:
...........................................................
Passive, no power required
Conditions:
..............
For use in dry locations only between 5°C and 40°C
Warranty:
........................................................
Radial 3-year, transferable
