Specifications
SPECIFICATIONS
Output Level
[at full galn, 1 kHz, one channel gated On,
Off-Atten at -1 5,
wlth AMS26 probe mtcrophone, output
terrnlnatlons: Llne 6000,
MIC
1500. Aux 50k. Olrect 50k,
Phones 20001
Frequency Response
Aux lnput to Outputs: 30 to 20,000 Hz, *2 dB
Mic
In to Outputs: 70 to 20,000 Hz,
*
2 dB [controll-
ed low-frequency
rolloff below 50 Hz]
INPUT
Mtcrophone
lnput
Senstttv~ty
172 dB
SPL
tn]
--
Aux
Input
Senstttvlty
1-22 dBV ~n]
--
Aux lnput Impedance
70k or greater, unbalanced [designed for use with less
than
10k source impedance]
Outputs
'Depend~ng
on
Aux
control settlng
OUTPUT
Input Clipping
Leva1 at
I
kHz
128 dB
SPL
+7 to
+
20 dBV'
OUTPUT
Mtc
Llne
Aux
atrect
Phones
IMPEDANCE
Phonaa
-4
dBV
-4 dBV
Deaigned for Actual
Uw
With [Internal]
Direct
56 dBV
--
Lina
+
15 8 dBV
[+
18 dBrn]
+
158 dBV
-
150R balanced
ltnes
600fl balanced
lhnes
10k or greater
10-50k unbalanced
rno
clrcutt
200n
Output
Clipping
bval
Mic
34
dBV
34
dBV
Hum and Noise
Equivalent lnput IYoise: 27 dB SPL, A-weighted, with
AMS26 probe microphone
Aux
+
17
dBV
+I7
dBV
Output Noise: -62 dBV [master up], -88 dBV [master
down]
[300-20,000 Hz, input controls down, Off-Atten
at -1
51
Output Hum and Noise: -58 dBV [master up],
-79
dBV
[master down] [20-20,000 Hz, input controls down, Off-
Atten at -1 51
Distortion
THD 0.35% or less, 30 to 20,000 Hz at
+
15 dBm
output; IMD 0.5% or less up to
+
15 darn output
Phase
Positive pressure on AMS microphone diaphragm pro-
duces positive voltage on pin 2 of
LinelMic balanced out-
put with respect to pin 3, tip of Aux output, and tip and
ring of Headphones output, and negative voltage on tip of
Direct output. Aux output is in phase with Aux input.
Gating
Attack Time:
4
rnsec:
Hold Time: 0.5 or 1 .O sec [switchable]
Decay Time: 0.3
sec after Hold interval
Off-Attenuation
F~xed: -1 5 dB
Varlable
-cx,
to -8.5 dB
[Slngle mtxer; attenuation Increases as addltlonal mixers
are l~nked]
Overload and Shorting Protection
Shortlng the lnputs or outputs, even for prolonged
perlods,
will
cause no damage; mc lnputs wlll not be
damaged by
slgnals up to 3V; aux lnputs
will
not be
damaged by
slgnals up to 10V
Logic Terminals
[all specifications referenced to Logic
Ground terminals]
lnputs [Override, Mute]
High [inactive]: Greater than
1.9V [5.OV typical] [no
input current with 5.0 to 20V applied]
Low [active]: Less than
1.9V [OV typical] [sources
80 when grounded]
MinlMax Applied Voltage:
+
20V
Outputs [Gate]
High [inactive]:
5.OV in series with 10k resistance
[sources 0.2
mA with 3.OV output] [minlmax applied
voltage: -0.5 to
+
1
5V]
Low [active]: Less than 0.5V sinking
[I
00
mA max]
LOGIC EQUIVALENT CIRCUIT DIAGRAM
FIGURE
1
Operating Voltage
105-1 32 Vac, 50160 Hz, 20W [fused internally]. Can
be rewired for 210-264
Vac operation [see 240V
Operation]
Temperature Range
Operating: -29" to 57°C [-20" to 135"FI
Storage: -29" to 71 "C [-20" to 1 60°F]
Dimensions
See Figure 2
OVERALL DIMENSIONS
FIGURE
2
Weight
AMS8000: 6.6 kg
[I
4
Ib
8
oz]
AMS4000: 5.8 kg
[I
2 Ib
1
3
oz]
AMSB000 [packaged]:
7.8
kg
[I
7
Ib
4
oz]
AMS4000 [packaged]: 7.1 kg
[I
5 Ib 9 oz]
Certifications
Listed by Underwriters Laboratories, Inc.; listed by
Canadian Standards Association as Certified