JK Audio RMx4 Datasheet
RMx4™ / RemoteMix x4™
4 Channel Field Mixer
FEATURES
» Low Noise, High Headroom, XLR mic inputs
(Two Mic/Line Switchable)
» Individually Switchable
48v Phantom Power
» L-C-R Channel Select for Each
Mic Input.
» 3.5 mm Stereo Line Input
» 120 Hz Low Cut Filter
» Soft Limiter
» Master XLR Output 20 Hz – 20 kHz
» ¼” Headphone Jacks with
Individual Source Selector and Level Controls
» ¼” Stereo Headphone Cue Input
» XLR Mono Line Level Headphone Cue Input
» Wired Phone Headset Interface with 3.5 mm
TRRS Plug
» 3.5 mm Stereo Line out
» 1 kHz Tone Generator
» LED VU Meter (Send/Receive Selector on x5)
» 24 bit USB codec for record and playback
through computer
» 24 bit AES digital output
» Hot Swappable Dual 9V Batteries and 120-240
VAC External Power Supply
x4 x5
4 4
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4 4
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Mix It Up. RMx4 combines a four-channel eld mixer
with a four-channel headphone amplier. After all,
what good is a eld mixer if you don’t have a exible
monitoring capability for the whole crew?
Great Sound. A soft limiter prevents overdriving the
full-duplex headset interface, while the master XLR and
3.5 mm outputs are pre-limiter (full range). Line level
cue input to the headphones make RMx4 a perfect
companion to your codec or recorder.
Convenient. 3.5 mm send and receive jacks for recording
or playing back recorded material. Separate headphone
level and source selection controls for each headphone
output. Monitor just the clean mixer output, or the Cue
input plus the mix.
Power Smart Design. Switchable 48V Phantom Power
on each mic input. Powered by 1 or 2 hot-swappable
9V batteries that automatically kick in if AC power goes
down. Low noise, low power ICs are used throughout
to preserve battery life. The 100-240 VAC desktop style
power supply (included) overrides the battery power only
when the supply is actually providing power.
Radio. RMx4 is designed for news and sports remotes.
Use it as a front-end mixer for your POTS, ISDN, IP or
smart phone codec. XLR out, ¼” return to headphones.
TV. RMx4 is designed for ENG, Sports, and interviews,
with four ¼” headphone outputs. 3.5 mm TRRS provides
2-way IFB audio from your cell phone or notebook.
RMx5 shown for comparison x4 =RMx4, x5 =RMx5
© 2015, JK Audio, Inc.
1311 E. 6th St. Sandwich, IL. 60548
800.552.8346 • 815.786.2929
Se Habla Español
jkaudio.com
info@jkaudio.com
JK Audio
XLR
Input
1
Phantom
XLR
Input
2
Phantom
XLR
Input
3
Phantom
Mic / Line
XLR
Input
4
Phantom
Mic / Line
3.5 mm line input
Master
Output
Master
3.5 mm
stereo
output
Headphone
1
Headphone
2
Headphone
3
Headphone
4
Wireless Phone/
Cue Input
Headset
Emulator
Headphone Cue
Return
Limiter
LED
Meter
High
Pass
RMx4™ / RemoteMix x4™
CUE
OR
CODEC
OR
00:00:00
L
R
MENU
PLAY/REC
MIC
A
S
D
F
G
H
J
K
L
A
L
T
Z
X
C
V
B
N
M
$
Q
W
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R
T
Y
U
I
O
P
#
1
2
3
(
)
_
-
+
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4
5
6
/
:
;
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D
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7
8
9
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,
.
CODEC
4 Channel Field Mixer
REAR VIEW
BLOCK DIAGRAM
SPECIFICATIONS
Input
Female XLR Mics (4):
Phantom Power:
1/8” (3.5mm) Stereo Line:
Headphone Cue:
2k ohms / -25 dBu nom
Channel 3 & 4 have -40 dB Mic/Line pad switch
Line = 50k ohms / +20 dBu max
48 VDC with 6.8k ohm supply resistance
20k ohms / -10 dBu nom
¼”: 20k ohms / -10 dBu nom
Female XLR: 50k ohms / +4 dBu nom.
Misc
Power:
Weight:
© 2015, JK Audio, Inc.
1311 E. 6th St. Sandwich, IL. 60548
100-240 VAC, 50-60Hz external power supply
or Two 9 VDC batteries
9.5” x 8” x 3”
Size:
3.6 lbs (1.6kg)
800.552.8346 • 815.786.2929
Se Habla Español
Output
Headphone 1/4” Stereo:
Balanced Male XLR:
1/8” (3.5mm) Stereo:
jkaudio.com
info@jkaudio.com
50 ohms / +16 dBu max
20 Hz - 20 kHz +/- 1dB
0.04% THD @ +16 dBu
100 ohms / -10 dBu nom
8 ohms / 1/3 watt per channel
JK Audio
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