ARCHITECT’S & ENGINEER’S
SPECIFICATION
The mixer amplifier shall incorporate a 250 W per
channel stereo amplifier, a dual 7-band graphic equaliz-
er, digital signal processing and a stereo mixer with 8
microphone-line input channels and two stereo line
input channels. Microphone inputs shall be on XLR-
type connectors and line inputs shall be on balanced
1/4
″
phone connectors. Each channel shall have a trim
control (microphone channels) or pad switch (stereo
line channels), one external and one internal effects
sends, 3-band equalization (microphone channels) or
2-band equalization (stereo line channels), pan, a
peak-level indicator and a level control.
Two stereo effects returns shall be provided on
1/4
″
phone connectors, and each shall have an inde-
pendent level control. The mixer shall provide 256
variations of digital signal processing.
Phantom power of +48 volts shall be provided for
operation of condenser microphones. The amplifier
shall be fan cooled. Amplifier output shall be provided
on two 1/4
″
phone connectors per side. Indicators
shall be provided for output-signal level, power and
+48 volts. The unit shall be a stand alone or rack-
mount type (rack ears included).
The amplifier shall deliver maximum power equal
to or greater than 250 watts per side into 4 ohms, sig-
nal-to-noise equal to or greater than 112 dB, THD less
than 0.02% and frequency response of ±1 dB from 20
Hz to 20 kHz. The mixer shall have residual noise of -
90 dB and THD less than 0.02%. Dimensions shall be
19.35
″
(491 mm) wide, 13.75
″
(349 mm) deep and
5.5
″
(139 mm) high. Weight shall be 36 lb. (16.4 kg).
The mixer amplifier shall carry a three-year warranty.
The mixer amplifier shall be a SAMSON TM500.
Specifications subject to change without notice. © 1999 SAMSON
TM500 SPECIFICATIONS
MIXER/PREAMP SECTION
Frequency Response (± 1 dB)
20 Hz - 20 kHz
Total Harmonic Distortion
(20 Hz to 20 kHz, -16 dB, trim minimum)
0.02%
Maximum Voltage Gain
Mic to Main Insert L,R
+64 dB
Mic to Aux Send 1
+64 dB
Mic to Aux Send 2
+74 dB
Mic to Mono Out
+74 dB
Line to Main Insert L,R
+34 dB
Stereo to Main Insert L,R
+24 dB
Aux Return to Main Insert L,R
0 dB
Tape In to Main Insert L,R
+14 dB
Residual Noise (with DIN audio filter)
All Fader Min / Main Insert L,R
-90 dB
All VR Min / Aux Send 1,2
-90 dB
Ch Fader Min, Master Fader Max
-75 dB
Equivalent Input Noise
(-60 dB, Mic In pins 2,3 150
Ω
,with DIN audio filter.)
-127 dB
Crosstalk (@ 1 kHz, Trim Min.)
Channel to channel
-70 dB
Input to output
-70 dB
EQ Control
High (10 kHz)
±15 dB
Mid (1.8 kHz)
±12 dB
Low (100 Hz)
±15 dB
Graphic Equalizer
(63 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.4 kHz, 15 kHz) ±12 dB
Phantom Power
+48 V
Signal Polarity (Phase)
same as Input
POWER AMP SECTION
Maximum Output Power (0.5% THD @ 1 kHz)
250 W / 4 ohm
Total Harmonic Distortion (20 Hz to 20 kHz, 1/2 rated power)
0.2%
Frequency Response (1 W/4 ohm, ±0.5 dB)
20 Hz - 20 kHz
Dynamic Range
> 100 dB
Channel Separation
75 dB
Output Offset Voltage
± 100 mV
GENERAL
Dimensions (W x D x H)
Table top
19.35 in. x 13.75 x 5.5
491 mm x 349 x 139
Rack-mountable (rack ears included)
19 in. x 13.75 x 5.5
482.6 mm x 349 x 139
Weight
36 lb • 16.4 kg
Power Requirements
115 V ac 60 Hz for UL and CSA Version
230/240 V ac 50/60 Hz for BSI and Central Europe Version
100 V ac 50/60 Hz for Japan Version
Power Consumption
982 W
