Peavey Automix 4 User manual

DESCRIPTION:
The Automix 4 is a
professional automatic microphone
audio mixer intended for fixed
installation applications. This
single rack-mount package is
designed to provide high quality
audio performance and easy-to-
use controls. Engineered from the
ground up, with the commercial
sound systems contractor in mind,
the Automix 4 includes remova le
screw connectors for easy
installation and cost-effective
servicing, as well as limited front
panel user control.
The Automix 4 provides
high quality audio operation, a
simple interface and an easy-to-
install package. For hands-free
operation in new and existing
sound systems, the Automix 4
makes sound system operation
easy and relia le.
When using multiple
microphones, gain control
ecomes essential. As additional
mics are turned on, the levels of
other active mics must e reduced
to prevent feed ack. The Automix
4 gain computer continuously
senses the signal from each mic
and quickly distri utes the
availa le gain among the channels
in use so that you won't miss a
single word. Using Peavey's
patented (US Patent num er
5,652,800) Priority Circuitry, the
Automix 4 eliminates the irritating
com filtering that often occurs
when a person speaking into a
wireless lapel mic moves close to
an active podium mic. With the
addition of the Automix 4's a ility
to link multiple units, this unit
provides even more flexi ility for a
wide range of applications.
FEATURES:
• Patented Priority Control circuitry
• Single rack space package
• Four microphone inputs
• LED clip status indicator on each
channel
• 48 Volt phantom power on each
input (switcha le on channels 1 & 2)
• Recessed gain control for each
Channel
• Channels 1 & 2 each have
priority assign control
• Channels 1 & 2 each have front
panel mute utton
• Front panel master level meter
(three-segment LED)
• Line level inserts on each channel
• Insert ena le/ ypass switch on
each channel
• Gain management computer
logic for seamless automatic
operation
• Audio and control us linking
• Rear panel master/slave linking
mode switch
• Master alanced output
• Mic or line level master output
with switch
• Un alanced aux out
• Remova le “euro” connectors for
all audio connections
• Rear panel power switch
• Remova le IEC power ca le
ARCHITECTURAL AND
ENGINEERING
SPECIFICATIONS:
The automatic microphone
mixer shall have four electronically
alanced, low noise
microphone/line inputs. Each input
shall have its own gain control.
Input 1 and 2 shall each have the
patented* priority Circuit with a
priority assign and individual front
panel mute controls. Each channel
shall have individual line level
inserts with ena le/ ypass switch.
fourty-eight Volt phantom power
SPECIFICATIONS
Automix™4
Automatic Microphone
Audio Mixer

shall e availa le on all channels
and e switched on inputs 1 and
2. There shall e included a
security cover protecting the main
controls on the front panel with
marking zones for each input. The
master section shall e equipped
with gain management computer
logic for seamless operation.
There shall e a alanced mic or
line master output with switch. In
addition, there is a master,
un alanced auxilliary output.
There is a master/slave
linking connection and switch on
the ack panel for connection to
additional Automix 4 units, and
also the Automix 2, as well as the
SMR™821 mixer. All audio
connections shall e made with
remova le “euro” type connectors.
The mixer shall have a
frequency response of 75 Hz to 20
kHz +/- 1 dB. It shall have an EIN
of -128 dBu and the total harmonic
distortion shall e less than 0.1%
at +4 dBu (22 Hz to 22 kHz BPF).
The maximum line output level
shall e +21 dBu (hi-Z load),
+18 dBu (600 load).
The unit shall e packaged in
a rugged metal chassis 19” wide
y 1.75” high y 9.38” deep. The
unit shall operate from 120 VAC,
60 Hx domestic and from 230
VAC, 50/60 Hz, export. The unit
shall e a Peavey Architectural
Acoustic Division model Automix 4.
THREE + TWO YEAR LIMITED
WARRANTY
NOTE: For details, refer to the
warranty statement. Copies of
this statement may e o tained y
contacting
Peavey Electronics Corporation,
P.O. Box 2898, Meridian,
Mississippi 39301-2898.
*US Patent no. 5,652,800
SPECIFICATIONS
Test Conditions:
120 Vrms, 60 Hz line voltage
maintained throughout testing.
Reference: 0 dBu = 0.775 Vrms.
INPUT SPECIFICATIONS
EIN:
-128 dBu (Rs= 150 Ohms), typical
Prea p Gain Range:
10 dB - 65 dB (MIC inputs)
-13 dB - 44 dB (LINE inputs)
Input I pedance:
2K Ohms (MIC inputs)
>10K Ohms (LINE inputs)
>10K Ohms (INSERT inputs)
Priority (channels 1 and 2):
0 dB to 9 dB
Phanto Power:
+48 Volts
Input sensitivity:
MIC inputs -61 dBu
LINE inputs -40 dBu
INSERT inputs +4 dBu
Maxi u Input Level:
MIC inputs +12 dBu
LINE inputs +30 dBu
INSERT inputs +21 dBu
Co on Mode Rejection:
>70 dB 20 Hz – 20 kHz
OUTPUT SPECIFICATIONS
Frequency Response:
75 Hz (–3 dB) to 20 kHz (–1 dB)
(at +4 dBu; ref: 1 kHz; 75 Hz HPF)
THD:
<0.1% at +4 dBu
(22 Hz - 30 kHz BPF)
Signal/Noise:
(Rs= 150 Ohms; 30 kHz LPF)
>85 dB (all controls fully CCW)
Output I pedance:
<200 Ohms
No inal Output Level:
LINE level output +4 dBu
MIC level output –26 dBu
INSERT outputs +4 dBu
Maxi u Output Level:
LINE level output +21 dBu (hi-Z load)
+18 dBu (600 load)
MIC level output –9 dBu (hi-Z load)
–12 dBu (600 load)
INSERT outputs +21 dBu (hi-Z load)
GENERAL SPECIFICATIONS
Channel Clip LED:
Red LED lights 2 dB efore clipping
Also lights to indicate mute on
channel 1 and 2 inputs
Output Level Indicators:
Red LED lights 2 dB efore clipping
Yellow LED lights at +4 dBu
Green LED lights at –16 dBu
Power Require ents:
120 Vrms, 60 Hz Domestic
230 Vrms, 50/60 Hz Export
15 Watts nominal
Di ensions:
1.75" x 19" x 9.38"
(45 mm x 483 mm x 238 mm)
Weight:
7.5 l s
3.4 kg
Features and specifications subject to change without notice.
Peavey Electronics Corporation • 711 A Street • Meridian • MS • 39301
[phone] • FAX [phone] • http://aa.peavey.com
©2000 Printed in the U.S.A. 6/00
80304715