Samson S83 User manual

• 8 balanced mic/line-input channels.
• Independent CD/tape input; signal is routed via channel EQ.
• Power: 300 W into 4 ohms.
• Built-in 3-spring reverb.
• 4-band equalization on all channels.
• 10-band graphic master EQ.
• Peak LEDs for each channel.
• Input trim control on each channel.
• 2 Aux sends per channel.
• 4 Aux returns with front-panel level controls.
• 48 V phantom power selectable for mic input connectors.
• Protection relay circuitry to prevent noise when powering on.
• Extremely portable format with carry handle and
protective corners.
• Rackmountable with rack ears included.
• Rear-panel amp in and preamp output.
• 2 speaker outputs.
• Master monitor and reverb level controls.
• Built-in headphone amp with 1/4″stereo connector and
independent level control.
•Front-panel output signal level meter.
S83
AMPLIFIER
MIXER
The S83 Mixer Amplifier combines a monophonic
8-input mic/line mixer with a dedicated power amp
producing 300 watts into 4 ohms. Portable or easily
installed into a rack, the S83 takes up only 4 spaces
with the optional rack ears included. Equipped with 4-
band equalization on each channel and a 10-band
graphic EQ on the main output, the S83 is an ideal all-
in-one device for recording, live concert and contract-
ing applications. It also features 8 electronically bal-
anced mic/line inputs (XLR-type and 1/4″connectors),
a CD/tape input (phono connectors), switchable 48
volts phantom power, internal reverb, 2 Aux sends
and 4 Aux returns, along with amp in and preamp and
monitor out patch points.
S83 MIXER AMPLIFIER 8 CHANNEL 300 WATT 4 ΩSAMSON TECHNOLOGIES CORP., HICKSVILLE, NEW YORK
EFFECT RETURNS EFFECT SENDS
MON OUT
1
2
2
4
1
3
AMP IN PRE AMP OUT
SPEAKER OUTPUT
+4dB
10KΩ
+4dB
600Ω
+4dB
600Ω
+4dB
47KΩ
LEFT RIGHT
CD/TAPE
IN
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN !
o
F
U
S
E
120 VOLT 6 AMP
220 VOLT 3.5 AMP
TO PREVENT SHOCK,
DO NOT OPEN. NO USER
SERVICABLE PARTS
INSIDE. REFER SERVIC-
ING TO QUALIFIED SERVICE
PERSONNEL. TO PREVENT
FIRE OR SHOCK HAZARD
DO NOT EXPOSE TO RAIN
OR MOISTURE
CAUTION
HEATSINK MAY BE HOT!
DO NOT BLOCK AIRFLOW
OR OVERHEATING MAY
OCCUR
SERIAL NUMBER
POWER RATING
120V/60Hz 450 W
POWER
FUSE
ON
OFF
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
LOW
0
+15
LEVEL
0
+10
EFF1 MON
0
+4 -40
TRIM
0
10
+10
EFF2 REV
0
LINE
MIC
CHANNEL 1
PEAK
LOW
+15
LEVEL
0
+10
EFF1 MON
0
+4 -40
TRIM
0
10
+10
EFF2 REV
0
LINE
MIC
CHANNEL 2
PEAK
LOW
+15
LEVEL
0
+10
EFF1 MON
0
+4 -40
TRIM
0
10
+10
EFF2 REV
0
LINE
MIC
CHANNEL 3
PEAK
LOW
+15
LEVEL
0
+10
EFF1 MON
0
+4 -40
TRIM
0
10
+10
EFF2 REV
0
LINE
MIC
CHANNEL 4
PEAK
LOW
+15
LEVEL
0
+10
EFF1 MON
0
+4 -40
TRIM
0
10
+10
EFF2 REV
0
LINE
MIC
CHANNEL 5
PEAK
LOW
+15
LEVEL
0
+10
EFF1 MON
0
+4 -40
TRIM
0
10
+10
EFF2 REV
0
LINE
MIC
CHANNEL 6
PEAK
LOW
+15
LEVEL
0
+10
EFF1 MON
0
+4 -40
TRIM
0
10
+10
EFF2 REV
0
LINE
MIC
CHANNEL 7
PEAK
LOW
−∞ +15
LEVEL
0
−∞ +10
EFF1 MON
0
+4 -40
TRIM
0
10
−∞ +10
EFF2 REV
0
LINE
MIC
CHANNEL 8
PEAK
8 CHANNEL MIXER 300 WATT AMPLIFIER
-18 -12 -8 -5 -3 0+2
PHANTOM PROTECTION POWER
30Hz 64Hz 125Hz 250Hz 500Hz 1K 2K 3K 5K 10K
+15dB
0dB
-15dB
30Hz 64Hz 125Hz 250Hz 500Hz 1K 2K 3K 5K 10K
PHANTOM
+10
RETURN 1-2
0
MAIN LEVEL
+10
RETURN 3-4
0
010
HEADPHONES
010
REVERB −∞ +10
MONITOR
0
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞
−∞ −∞
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
0
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
0
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
0
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
0
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
0
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
0
-12 +12
2.5K
0
-15 +15
HIGH
0
-12 +12
500Hz
0
-15 +15
0
+10
0
−∞
SAMSON
S83 MIXER AMPLIFIER
Contact:
Samson Technologies Corp., P.O. Box 9031, Syosset, NY 11791-9031 •Phone: [phone] •Fax: [phone] •www.samsontech.com

ARCHITECT’S & ENGINEER’S
SPECIFICATION
The mixer amplifier shall incorporate a 300 watts mono-
phonic amplifier, a 10-band graphic equalizer and a mono-
phonic mixer with 8 microphone/line- input channels.
Microphone inputs shall be on XLR-type connectors and line
inputs shall be on balanced 1/4″Tip-Ring-Sleeve phone con-
nectors. An independent line-level CD/tape input (routed to
channel 8) shall be on phono connectors. Each channel shall
have a trim control, an effects send, a monitor send, 4-band
equalization, a peak-level indicator (5 dB before clipping) and
a level control.
The mixer shall provide main, monitor and effects outputs
on 1/4″phone connectors, as well as a preamp out and power
amp in for submix applications on 1/4″phone connectors.
Four effects returns shall be provided on 1/4″phone connec-
tors, and each shall have an independent level control.
Phantom power of +48 volts shall be provided for operation of
condenser microphones. The amplifier shall be passively
cooled. Amplifier output shall be provided on two 1/4″phone
connectors. Indicators shall be provided for output-signal level,
power, +48 volts and amplifier protection. The unit shall be of
a rack-mount type.
The amplifier shall deliver maximum power equal to or
greater than 300 watts into 4 ohm, signal-to-noise equal to or
greater than 105 dB, THD less than 0.0045% and frequency
response of ±1 dB from 10 Hz to 28 kHz. The mixer shall have
residual noise of -110 dB, signal-to-noise equal to or greater
than 78 dB and THD less than 0.045%. Total power consumed at
full audio power shall be 544 W (115 Vac) and 594 watts
(230/240 VAC). Dimensions shall be 17.75″(451 mm) wide,
4.92″(125 mm) deep and 11.02″(280 mm; 4 rack spaces)
high. Weight shall be 31 lb. (14.1 kg). The mixer amplifier
shall carry a three-year warranty.
The mixer amplifier shall be a SAMSON S83.
+
--
+
--
-
-
-
-
-
-
-
-
-
-
-
-
LOW 2.5K HIGH
3
2
3
2
30Hz 125Hz 500Hz 2K 5K
64Hz 250Hz 1K 3K 10K
AMP 1W
POWER AMP
SPEAKER OUT
MINIMUM 2 Ohm
POWER SW
POWER AMP
PHANTOM SW
POWER LEDPHANTOM LED
7818
7919
1
500Hz
1
LOW 2.5K HIGH
500Hz
COAP
13
2
13
2
PEAK
EFF 1/ MON
EFF 2 / REV
LEVEL
EFF 1/ MON
EFF 2 / REV
LEVEL
LINE
BALANCED
-40 +0 +4dB
TRIM
MIC
LINE
MA
MIC
TAPE
-10dB 10K Ohm
RETURN 1-2
RETURN 1
RETURN 2
+4 dB 47 Kdm
SUM
SUM
SUM LA
PHONE
PHONE
REVERB REVERB UNIT
EFF SEND 2
+ 4dB 600 Ohm
+ 4dB 600 Ohm
+ 4dB 600 Ohm
+ 4dB 600 Ohm
PREAMP OUTLEVEL
EFF SEND 1
MON OUT
MON
RES
RETURN 3-4
RETURN 3
RETURN 4
700F LED BAR GRAPH
DRIVER
L
R
MA
TRIM
PEAK
4 BAND EQ
CH 1-7
CH 8
M
A
I
N
E
F
F
1
/
M
O
N
E
F
F
2
/
R
E
V
P
H
A
N
T
O
M
10 BAND GRAPHIC EQ
4 BAND EQ
Specifications subject to change without notice. © 1998 SAMSON
S83 SPECIFICATIONS
MIXER/PREAMP SECTION
THD (with 30 kHz LPF, trim center): < 0.045%
Signal-to-noise ratio (with 30 kHz LPF, trim center): 78 dB
Maximum voltage gain
Mic in to preamp out: effects send 1, 2, mon out: 62 dB
Line in to preamp out: effects send 1, 2, mon out: 52 dB
Tape in to preamp out: effects send 10 dB
Tape return to preamp out: 5 dB
Residual noise (with 30 kHz LPF, VR min)
Preamp out: -110 dB
Mon out: -100 dB
Trim gain: 40 dB
Tone controls
High (10 kHz): ± 15 dB
2.5 kHz: ± 12 dB
500 Hz ± 12 dB
Low (80 Hz): ± 15 dB
Graphic equalizer (30, 64, 125, 250, 500 Hz, 1, 2, 3, 5, 10 kHz): ± 15 dB
Peak LED: 5 dB before clipping
Tape input sensitivity (-10 dB): 300 mV
Headphone: 20 mW (8 Ω)
POWER AMP SECTION
Rated output power (1 kHz): 300 W into 4 Ω
220 W into 8 Ω
THD (with 30 kHz LPF): < 0.0045%
Signal-to-noise ratio (with 30 kHz LPF): 105 dB
Frequency response (±1 dB): 10 Hz to 28 kHz
Input sensitivity/impedance: 1.2 V/10 kΩ
Residual noise (VR min): 74 dB typical
Idle current (across the 0.47 Ωemitter resistor): < 7 mA
DC offset voltage: 0 ± 50 mV
GENERAL
Dimensions: 451 mm (w) x 125 mm (d) x 280 mm (h)
19″(w) x 4.92″(d) x 11.02″(h)
Weight: 31 lb. •14.1 kg
Power requirements: 115 VAC •50/60 Hz
544 W (115 VAC)
Power consumption (at full power): 395 W (230/240 VAC)