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Block Diagram
¼"
RCA
CH-1
INPUT
-15dB
MERGE
PAD
CH-1
RCA
THRU
CH-1 XLR
Line In
¼"
3.5mm MINI
CH-2 XLR
Line In
¼"
RCA
CH-2
INPUT
-15dB
MERGE
PAD
RCA
CH-2
THRU
¼"
Radial Engineering Ltd.
POLARITY
180º
CH-1 XLR
OUTPUT
XLR-IN
XFORMER
Switch
-20dB
PAD
GND
LIFT
-20dB
PAD
XLR-IN
XFORMER
Switch
CH-2 XLR
POLARITY
OUTPUT
180º
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
9
True to the Music
JDI • Duplex User Guide
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