Samson Mixpad 12 User manual

• 12-channel stereo ultra-compact mixer.
• 6 balanced monophonic mic/line channels and 3
additional stereo channels.
• Independent CD/tape input; signal is routed via
channel EQ.
• Trim controls on mic input channels.
• 48 volt phantom power for mic input connectors.
• 2-band equalization on all channels.
• Constant level stereo panpot on each monophonic
channel.
• Left/right balance control on each stereo channel.
• 2 Aux sends (one pre-fade and one post-fade) on
each channel.
• 2 stereo Aux returns with front panel level controls.
• Front-panel stereo headphone output.
• Master peak and power LEDs.
• 2 balanced main outs.
• Optional battery power for convenience in ENG,
field broadcast and recording applications.
MIXPAD 12
COMPACT
MIXER
The ultra-compact MIXPAD 12 Mixer provides a 12-
input stereo mic/line mixer in a very small package.
Equipped with 2-band equalization and pan/balance and
level controls on each channel, the MIXPAD 12 is an
ideal device for ENG, field recording, broadcast and con-
tracting applications. It also features optional battery
power, a front-panel stereo headphone jack, 6 electroni-
cally balanced mic/line inputs (XLR and 1/4″connec-
tors), 3 stereo line inputs (1/4″connectors), a CD/tape
input (phono connectors), 48 volt phantom power, 2
Aux sends and 2 stereo Aux returns (which have inde-
pendent level controls, allowing for use as 4 mono Aux
returns), as well as a main level control and power and
peak LEDs.
Contact:
Samson Technologies Corp., P.O. Box 9031, Syosset, NY 11791-9031 •Phone: [phone] •Fax: [phone] •www.samsontech.com
SAMSON
LOW
HIGH+15-15
O
+15-15
O
+10
O
LR
PAN
LEVEL
AUX 2
AUX1 PRE
LINE
TRIM -50
-10
0
+4
MIC 5
PAN
LOW
HIGH+15-15
O
+15-15
O
+10
O
LR
LEVEL
AUX 2
AUX1 PRE
LINE
TRIM -50
-10
0
+4
MIC 6
LOW
HIGH+15-15
O
+15-15
O
+10
O
LR
LEVEL
AUX 2
AUX1 PRE
LOW
HIGH+15-15
O
+15-15
O
+10
O
LR
LEVEL
AUX 2
AUX1 PRE
4L
5R
6L
7R
AUX SEND 1
<75Ω+4dBU RIGHT
AUX
RETURN
1/2
AUX
RETURN
3/4
AUX RET. 3/4
AUX RET.1/2
POWER
LEFT PEAK RIGHT
TAPE/CD
MAIN LEVEL
O
+10
BALANCE BALANCE
8L 9R
+10
MIXPADPAD12
LOW
HIGH+15-15
O
+15-15
O
+10
O
LR
LEVEL
AUX 2
AUX1 PRE
8L
9R
LEFT
BALANCE
MONOMONO MONO
+10
O
+10
O
+10
O
+10
O
+10
O
+10
O
+10
O
56 789101112
+10
O
+10
O
+10
O
+10
O
+10
O
AUX SEND 1
<75Ω+4dBU
MAIN OUTPUT
BALANCED +4dBU
LEVEL
4+10
O
LOW
HIGH+15-15
O
+15-15
O
LR
PAN
AUX 2
AUX1 PRE
LINE
TRIM -50
-10
0
+4
MIC 4
+10
O
+10
O
LEVEL
3+10
O
LOW
HIGH+15-15
O
+15-15
O
LR
PAN
AUX 2
AUX1 PRE
LINE
TRIM -50
-10
0
+4
MIC 3
+10
O
+10
O
LEVEL
2+10
O
LOW
HIGH+15-15
O
+15-15
O
LR
PAN
AUX 2
AUX1 PRE
LINE
TRIM -50
-10
0
+4
MIC 2
+10
O
+10
O
LEVEL
1+10
O
LOW
HIGH+15-15
O
+15-15
O
LR
PAN
AUX 2
AUX1 PRE
LINE
TRIM -50
-10
0
+4
MIC 1
+10
O
+10
O

ARCHITECT’S & ENGINEER’S
SPECIFICATION
The mixer shall be 12 in/2 out and shall incorporate 6
monophonic and 3 stereo line input channels, including 6
microphone channels. Microphone inputs shall be on XLR-
type connectors, monophonic line inputs shall be on bal-
anced 1/4″Tip-Ring-Sleeve phone connectors, and stereo
line inputs shall be on 1/4″phone connectors. An inde-
pendent stereo line-level CD/tape input (routed to chan-
nels 11-12) shall be on phono connectors. Each channel
shall have 2 Aux sends, 2-band equalization and a level
control. In addition, monophonic channels shall have a
stereo panpot and stereo channels shall have a left/right
balance control. Microphone inputs (on channels 1-6)
shall have an input trim control.
The mixer shall provide main outputs on balanced
1/4″Tip-Ring-Sleeve phone connectors, effects outputs on
1/4″phone connectors, and a headphone output on a
1/4″Tip-Ring-Sleeve phone connector. 2 stereo effects
returns shall be provided on 1/4″phone connectors, and
each shall have an independent level control. The mixer
shall be powered either from provided mains adapter or
from optional battery pack. The unit shall be of an ultra-
compact type.
The mixer shall have residual noise of 95 dB, THD
less than 0.01%, and frequency response of ±3 dB from 10
Hz to 50 kHz. Dimensions shall be 12.8″(324 mm) wide,
9″(228 mm) deep and 2.3″(58 mm) high. Weight shall be
6.5 lb. (2.9 kg). The mixer shall carry a three-year warran-
ty. The mixer shall be a SAMSON MIXPAD 12.
PEAK
DETECTOR
PEAK
DETECTOR
R
T
S
R
T
S
R
T
S
R
T
S
R
T
S
AUX 1
UNBALANCED
Zout = .1k
+4dbu
AUX 2
UNBALANCED
Zout = .1k
+4dbu
MAIN L
BALANCED
Zout = .1k
+4dbu
MAIN R
BALANCED
Zout = .1k
+4dbu
PHONES
UNBALANCED
Zout = .15k
150mW
+10dB
-10db
+10db
HEADPHONE
+4db
+4db
-10dbu
-10dbu
-10db
-10db
0dbu
0dbu
0db
0db
+14db
+14db
AUX 1
AUX 2
LEFT
RIGHT
R
I
G
H
T
L
E
F
T
A
U
X
2
A
U
X
1
R
I
G
H
T
L
E
F
T
A
U
X
1
A
U
X
1
-10dbu
-10dbu
-10dbu
-10dbu
0dbu
0dbu
0dbu
0dbu
AUX 1
-10db
AUX 2
-10db
PAN
-3db
mid
PRE/POST
+10db
0dbu
-10dbu
-10db
Level
LOW HIGH
0dbu 2 BAND EQ
+/-15db
(NON-INV)
0dbu
PAD
-20db
+30db
MIC PRE
(LINE)
+42VDC
MIC INPUT
BALANCED
XLR
Zin = 1k5
LINE INPUT
BALANCED
TRS
Zin = 10k
2
3
1
R
RN
TN
T
S
CHANNELS 1-6
MONO TYPES
MAIN
PRE/POST AUX 1
AUX 2
BAL
-10db
-10db
0db
mid
0dbu
+10db
-10dbu
-10db
-10dbu
-10db
Level
0dbu
+10db
2 BAND EQ
+/-15db
(NON-INV)
2 BAND EQ
+/-15db
(NON-INV)
0dbu
0dbu
0dbu
LOW HIGH
LOW HIGH
0dbu
AUX 3
AUX 4
TN
T
S
LINE INPUT
UNBALANCED
TS
Zin = 10k
(ODD)
TN
T
S
LINE INPUT
UNBALANCED
TS
Zin = 10k
(EVEN)
CHANNELS 7-12
STEREO TYPES
TAPE IN
AUX RETURNS 1-4
STEREO TYPES
AUX RTN 1/2
UNBALANCED
TRS
Zin = 10k
R
RN
TN
T
S
AUX RTN 1/2
-10db
-10db
(PARALLEL TO 8-9)
L
R
MIXPAD 12 SPECIFICATIONS
CHANNEL SECTION
Total harmonic distortion (with 30 kHz LPF): < 0.01%
Residual noise (with 30 kHz LPF, VR min):
L/R main: 95 dB
Aux send 1/2 85 dB
Frequency response (±3 dB): 10 Hz to 50 kHz
Maximum voltage gain:
Mic to main: 74 dB
Line to main (mono ch): 54 dB
Line/Tape to main (stereo ch): 34 dB
Aux return to main: 20 dB
Crosstalk (1 kHz):
Channel vs. channel: 70 dB
Input vs. output: 75 dB
EIN (“A”filter on, input shorted):
Mic: -128 dB
Line: -111 dB
Maximum input level (1 kHz, ± 3dB):
Mic input (mono ch): +22 dBu
Line input (stereo ch): +7 dBu
Headphone output level (600 Ωloaded): 100 mW
Peak LED sensitivity (before clipping): 3 dB± 2 dB
EQUALIZATION
10 kHz High (shelving): ±15 dB
100 Hz Low (shelving): ±15 dB
GENERAL
Dimensions: 324 mm (w) x 228 mm (d) x 58 mm (h)
12.8″(w) x 9″(d) x 2.3″(h)
Weight: 6.5 lb. / 2.9 kg.
Specifications subject to change without notice. © 1998 SAMSON