Samson MDR1248 is a professional 12-channel stereo mixer suitable for live performances and installations. With four mic/line inputs, four stereo channels, on-board digital effects, and flexible routing options, it's ideal for musicians, engineers, and content creators. The mixer features high-quality mic preamps with phantom power, 60mm faders, and a 3-band EQ with sweepable mids on the mic/line channels. Explore a wide range of sonic possibilities with 256 digital studio-quality effects, including delays, chorus, flanging, and lush reverbs.
Samson MDR1248 is a professional 12-channel stereo mixer suitable for live performances and installations. With four mic/line inputs, four stereo channels, on-board digital effects, and flexible routing options, it's ideal for musicians, engineers, and content creators. The mixer features high-quality mic preamps with phantom power, 60mm faders, and a 3-band EQ with sweepable mids on the mic/line channels. Explore a wide range of sonic possibilities with 256 digital studio-quality effects, including delays, chorus, flanging, and lush reverbs.
PRO
PRODUCT SPECIFICATION SHEET
MIXERS
TYPE:
MDR
MIXERS
PRODUCT DESCRIPTION
MDR1248
12-CHANNEL MIXER WITH DSP
SERIES
CATEGORY
MDR MIXERS MIXERS
A 12-segment LED meter with VU ballistics also displays
the main mix output. And to make the MDR1248 even
more versatile, we include a standard 19-inch rackmount kit.
As like all of Samson’s MDR mixers, the MDR1248
features advanced circuit design using carefully selected
components at each stage of the signal path, giving you
maximum dynamic range and a transparent audio signal.
Finally, durable construction ensures reliable performance
from venue to venue and session to session. Optimized
for recording, live sound reinforcement and commercial
installations, the MDR1248 is an ideal mixer solution,
offering big sound in a compact package.
FEATURES
>
12 Inputs: 4 mic/line plus 4 stereo line
>
24-bit Digital Effects Processor with 256 presets
>
3-band EQ with sweepable mids on mic/line inputs
>
4-band EQ on stereo channels
>
60mm faders
>
Standard 19-inch rackmount kit included
ARCHITECT’S & ENGINEER’S SPECIFICATIONS
The Samson MDR1248 shall be an audio mixer that is
rack mountable using the included rack mount kit or it can
be used as a tabletop audio mixer. It shall be a 12-channel
design with 4 channels having XLR mic inputs and 4
channels being stereo channels. The XLR Mic channels
are equipped with 3 band EQ with sweepable mids, line
input, insert point, mic/line trim control, 75Hz low cut
filter, 1 aux send with pre/post switch, 1 aux send to the
internal 24 bit DSP effects unit with 256 presets, pan,
solo, 60mm fader and alt bus 3⁄4 routing switch. The
stereo channels shall have 1⁄4 inch inputs with left mono
capability, +4/-10 gain switch, 4 band fixed frequency
EQ, 1 aux send with pre/post switch, 1 aux send to the
internal 24 bit DSP effects unit with 256 presets, pan,
solo, 60mm fader and alt bus 3⁄4 routing switch. The
main section shall have 1⁄4 inch alt 3⁄4 outputs, 1⁄4 inch
control room outputs, 1⁄4 inch main mix outputs, balanced
XLR outputs, 60mm mix left, mix right and control room
faders. The control room shall get its signal from the main
mix, alt 3⁄4 mix, and the 2TK input via 3 switches. The
main mix shall get its signal from the main mix bus, alt
3⁄4 bus and the 2TK input via the main mix bus and 2
switches. 12 segment metering shall be provided with
switchable AFL/PFL modes. There shall also be LED
indication for power and phantom power. There shall be a
2 TK inputs on RCA jacks with level control and outputs
on RCA jacks. There shall be an aux 1 master send level
and aux 1 stereo return on 1⁄4 inch jacks with level
©2008 Samson v1.0 6/08
GENERAL DESCRIPTION
Ideal for live performance installations, the MDR1248
delivers superior audio quality and excellent value, along
with an impressive feature set.
The MDR1248 is a true professional 12-channel stereo
mixer. Connecting all your microphones and instruments
to this mixer is simple, with four mic/line inputs plus
four additional stereo channels.
There are also dedicated stereo effects returns for the
on-board digital effects, which are both numerous and
impressive. The MDR1248 features 256 digital studio-
quality effects including delays, chorus, flanging and lush
reverbs, which can be added to your vocals or instruments
using the built-in 24-bit multi-effects processor.
The mic/line inputs feature a 3-band equalizer with
sweepable midrange control and there is a four-band fixed
equalizer on each of the stereo input channels. Each of
the stereo and mono input channels have two aux sends
for an onstage monitor mix, built-in or external effects, or
headphone mixing. Plus, aux one can be configured as
a pre or post fader send.
The MDR1248’s master section includes two stereo aux
returns and a two-track input and output for playing back
stereo devices and for recording your mix. Clean, clear
sound reproduction with sweet equalization and signal-
flexible routing ensure dependable and remarkable sound
for every performance.
High-quality, discreet, low-noise mic preamps with
48-volt phantom power and 60mm faders give users the
best possible sound with the best possible feel.
continued
MDR1248
control. There shall be an aux 2 master send level and aux 2
stereo return on 1⁄4 inch jacks with level control and switch
to apply the aux 2 signal to the aux 1 mix. There shall be a
stereo headphone output on 1⁄4 inch TRS jack. There shall
be a 24 bit internal effects unit with 256 presets, peak LED,
and DSP mute. The mixer shall have a power on/off switch
and a phantom power switch on the rear panel. The mixer
shall have an external power supply.
PRODUCT SPECIFICATION SHEET
SERIES DESCRIPTION CATEGORY
MDR MIXERS 12-CHANNEL MIXER WITH DSP MIXERS
2
1
3
N I C I M
V 8 4 +
( Q E R F + Q E D N A B - 3 ) K 8 ~ 0 0 1
K 2 1 0 0 1 0 8
S S A P I H
2
1
3
T U C O L
K A E P
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
S U B - T H G I R
S U B - T F E L
1 - X U A
2 - X U A
N I O E R E T S - 5 ( S L E N N A H C T U P 8 4 2 1 R D M R O F ) 2 1
Q E
K 2 1 0 0 5 0 8
S U B - T F E L
S U B - T H G I R
1 - X U A
2 - X U A
S U B - T F E L
S U B - T H G I R
2 N R U T E R X U A O E R E T S
2
1
3
1 - X U A O T X F E
2
1
3
S U B - T H G I R
S U B - T F E L
1 - X U A
1 - X U A
1 - X U A
D N E S X U A
2 - X U A
T U O N I A M
S U B - T F E L
S U B - T H G I R
X I M O T K T 2
S U B - T H G I R
S U B - T F E L
N I E P A T
T H G I R
K T 2
K T 2
T U P T U O S E N O H P
R E T E M T F E L
R E T E M T H G I R
z H 5 7
b d 5 1 - / +
c 3
e 5
a 1
d 4
b 2
T F E L
c 3
e 5
a 1
d 4
b 2
T H G I R
L E V E L X I M N I A M
1 D N E S X U A
T
R
S
2 D N E S X U A
T
R
S
T F E L X I M N I A M
T
R
S
T H G I R X I M N I A M
T
R
S
T U P T U O M O O R L O R T N O C
T F E L
T
R
S
T H G I R
T
R
S
S E N O H P
T
R
S
S E N O H P &
M O O R L O R T N O C
T F E L
T U O E P A T
2
1
3
2
1
3
P S D / 2 X U A
1 N R U T E R X U A O E R E T S
c 3
e 5
a 1
d 4
b 2
) O N O M ( T F E L
c 3
e 5
a 1
d 4
b 2
T H G I R
N R U T E R 1 X U A
T
R
S
N R
N T
T
R
S
N R
N T
T
R
S
N R
N T
T
R
S
N R
N T
N A P
M O T N A H P
N I E N I L
N I A G
-
+
R E W O P
Q E R F D I M I H
1 X U A
2 X U A
L E V E L
T S O P
E R P
E C N A L A B
1 X U A
2 X U A
L E V E L
K A E P
c 3
e 5
a 1
d 4
b 2
) O N O M ( T F E L
c 3
e 5
a 1
d 4
b 2
T H G I R
T
R
S
N R
N T
T
R
S
N R
N T
-
+
-
+
B d 0 4 ~ 0 : N I A G C I M
B d 5 2 - ~ B d 5 1 + : M I R T N I E N I L
AFL-L
AFL-R
SOLO(PFL)
O L O S
N O
) (
L - L F A
R - L F A
) L F P ( O L O S
O L O S
N O
) (
L - L F A
R - L F A
) L F P ( O L O S
EFX SEND
LEFT-BUS
RIGHT-BUS
AUX-1
AUX-2
AFL L
AFL R
SOLO(PFL)
EFX SEND
L L F A
R L F A
) L F P ( O L O S
D E L L F P
LOGIC
L R T C O L O S
E V I T C A O L O S
) T E S L E V E L (
N R U T E R
E D O M O L O S
L F P
) (
L F A
) (
c 3
e 5
a 1
d 4
b 2
T R E S N I
T
R
S
N R
N T
ALT-3(L)
ALT-4(R)
ALT-3(L)
ALT-4(R)
4 - T L A
3 - T L A
4 - T L A
3 - T L A
1 X U A
L E V E L
2 X U A
L E V E L
) L ( 3 - T L A
) R ( 4 - T L A
4 - 3 T L A
L E V E L
T U O 4 - 3 T L A
) L ( 3 - T L A
T
R
S
) R ( 4 - T L A
T
R
S
X I M O T 4 - 3 T L A
S U B - T H G I R
S U B - T F E L
4 - 3 T L A
X I M N I A M
E C R U O S M O O R L O R T N O C
T L A / N I A M
T L A / N I A M
1
2
1
2
T S O P
E R P
1 2
1 2
T S O P
E R P
T S O P
E R P
K T 2
T H G I R
T F E L
LOGIC
O L
K 8
I
Q E D N A B - 4
K 2 1 0 0 5 0 8
b d 5 1 - / +
O L - D I M D I M - I H
I H
O L
K 3
K 3
) v B d 0 1 - / u B d 4 + L E V E L (
D E L 4 - 3 T L A / E T U M
D E L 4 - 3 T L A / E T U M
L E V E L K T 2
L E V E L X I M N I A M
) T F E L (
) T H G I R (
D R A O B P S D
S T E S E R P
S N O I T A I R A V
E T U M
H C T I W S T O O F P S D
L - N T R X F E
R - N T R X F E
-
+
-
+
-
+
-
+
N I O E R E T S - 9 ( S L E N N A H C T U P 8 8 6 1 R D M R O F ) 6 1
MDR1248-12 CHANNEL MIXER SPECIFICATIONS
Frequency Response ......................... 10 Hz to 45 kHz, +/-0.4 dB
Distortion (THD&N) ........................... 0.05% at +4 dBu, 1 kHz
Gain Range ...................................... 0 dB to +40 dB (MIC)
Signal to Noise Ratio (SNR) ............... 105 dB
Line Input ........................................ Electronically balanced
Sensitivity Range ............................. -10 dBu to +30 dBu
Stereo Input Channels ....................... Balanced Line Input
Distortion (THD&N) ........................... 0.005% at +4 dBu, 1 kHz
Max Output ...................................... +22 dBu balanced XLR
Dimensions (W × D × H) ................... 16˝ × 12.3˝ × 2.6˝
405mm × 313mm × 65mm
Weight ............................................ 9.79 lbs • 4.45kg
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v
v
v
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1
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Samson MDR1248 is a professional 12-channel stereo mixer suitable for live performances and installations. With four mic/line inputs, four stereo channels, on-board digital effects, and flexible routing options, it's ideal for musicians, engineers, and content creators. The mixer features high-quality mic preamps with phantom power, 60mm faders, and a 3-band EQ with sweepable mids on the mic/line channels. Explore a wide range of sonic possibilities with 256 digital studio-quality effects, including delays, chorus, flanging, and lush reverbs.
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