UMA 752 SS-1
Specifications
UMA™ 752 MIXER/AMPLIFIER
Pre out:
Specifications
Rated output power: 75 Watts
Output regulation:
Direct out:
Transformer out:
<0.5 dB
<1.0 dB
Frequency response:
Power Amplifier: ±0.5 dB, 20 Hz to 20 kHz,
direct out
±1.0 dB, 50 Hz to 20 kHz,
transformer out
Preamplifier:
±1.0 dB, 20 Hz to 20 kHz
THD:
Power Amplifier:
Preamplifier:
Inputs:
Channel 1:
0.05% (1 kHz)
0.10% with nominal gain
settings
Channel 2:
Channel 3:
Channel 4:
Power bandwidth (±3 dB):
Direct out:
<10 Hz to 70 kHz
Transformer out: 30 Hz to 40 kHz
Signal/noise:
(22 Hz — 22 kHz) typical
All controls CCW:
-100 dB
All controls nominal (5):
-90 dB
Level controls CCW and master level CW:
-80 dB
Outputs:
Direct out:
XFMR:
Ch. 4 out:
4 Ohms
Balanced 8 Ohms (25 V),
70 V, 100 V
1 V nom., +21 dBu max.
at 100 Ohms
Power in:
Tone controls:
Bass:
Treble:
1 V nom.; +21 dBu max.,
at 100 Ohms
Mic 1 mV at 1.8 k Ohms
(XLR or screw terminals)
Tel 100 mV at 20 k Ohms
(Screw terminals)
Mic 1 mV at 1.8 k Ohms
(Screw terminals)
Line 100 mV
at 20 k Ohms
(Screw terminals)
Line 100 mV
at 20 k Ohms
(Screw terminals)
Line 100 mV
at 20 k Ohms
(Screw terminals)
Stereo 316 mV
(-10 dBV) at
4.0 k Ohms
(RCA jacks)
1 Volt at 20 k Ohms
±10 dB at 100 Hz
±10 dB at 10 kHz
Front panel controls and indicators:
Channel 1 level control
Channel 2 level control
Channel 3 level control
Channel 4 level control
Bass control
Treble control
Specifications
UMA™ 752 MIXER/AMPLIFIER
Master level control
Input channel signal level indicators:
(signal presence = green; signal peak
= red)
Input channel mute status
Power amplifier signal presence
indicator
SPS™ indicator
Power on indicator
Rear panel controls:
Module input level control use with
MMA input modules only
Channel 1 sensitivity switch
Channel 1 mute bus assign switch
Mute 2 threshold control
Channel 2 sensitivity switch
Channel 2 mute bus assign switch
Channel 4 output level control
Loop switch
Power switch
Muting:
Mute 1: MMA input module overrides
Ch 1 through 4
Mute 2: Ch 1 overrides Ch 2 through 4
with adjustable threshold control range
from OFF to 100 mV (TEL) or 1 mV (MIC)
Other features:
Remote volume control (RVC) via screw
terminals
• 10 k Ohms approximately 30 dB
attenuation
• 100 k Ohms approximately 60 dB
attenuation
Mute 1 and mute 2 bus activation with
switch contact closure via screw
terminals
24 V DC phantom power on MIC inputs
Power requirements:
180 Watts, 120 V AC, 60 Hz
Dimensions:
19" x 13.25" x 3.45" with rack ears
(483 mm x 337 mm x 88 mm)
17" x 13.25" x 3.45" without rack ears
(432 mm x 337 mm x 88 mm)
Weight:
23.8 lbs. (11 kg)
Color:
Black
Features
• Up to five input channels
• One electronically balanced Mic/Tel
input – telephone input with 600 Ohm
transformer balanced for paging
• One electronically balanced Mic/Line
input
• Two electronically balanced Line inputs
• One plug-in module port allows for any
single-space MMA™ module
• Rear-panel input level control for
optional MMA input module
• Priority/Muting system with internal
signal override, external switch closure
capability, threshold control, and front
panel indicators
• Mute Bus Active/Defeat switches on
two channels
• Remote volume control capability
• Bass and treble equalization controls
• Preamp output and power amp input
loop for external processing equipment or
auxiliary output
• Channel 4 electronically balanced
output provides non-mutable output for
MOH
• Front panel channel input signal level
indicators
• Amplifier signal indicator
• SPS™ (Speaker Protection System)
circuitry with indicator
• Power indicator
• 4 Ohm direct output
• 8 Ohm, 70 Volt, and 100 Volt
transformer-balanced power outputs
• AC convenience outlet (120 V units
only)
• Optional rack mounting with included
rack ears
Applications
•
•
•
•
•
•
•
•
•
•
•
Presentation rooms
Board rooms
Courtrooms
Auditoriums
Lecture halls
Meeting rooms
Convention centers
Paging systems
Background music
Retail spaces
Restaurants
Description
The UMA 752 is a high quality,
commercial grade analog audio
mixer/amplifier. Designed for flexibility in
application, this mixer/amp represent the
latest, state-of-the-art technology in
analog circuit design.
Powerful, yet easy to use, the new UMA
752 delivers amazing sonic performance.
Low-noise design and features applicable
to “real-world” situations makes this unit
ideal for audio applications where a
compact, powered mixer with multiple
input and output capabilities are
required.
Architectural and Engineering
Specifications
The mixer/amplifier shall have 4-inputs and
an accessory module port for use with
present and future Peavey MMA modules.
The front panel shall include four input
level controls, bass and treble controls, and
a master output control. Front panel
indicators shall include power, signal
presence at the amplifier, channel signal
and mute condition, and SPS™. The mixer
amplifier shall have a hierarchical muting
function where the input module has the
highest priority followed by Channel 1.
Outputs shall include one direct and three
transformer-balanced. The power switch
shall be on the rear panel along with the
detachable IEC cord, fuse holder, and
accessory power outlet (120 V only).
There shall be four inputs with Euro-type
connectors on the rear panel and level
controls on the front panel. Channel 1 shall
also include an XLR connector and have a
bridging transformer input with switchable
input sensitivity between telephone paging
and microphone. When in the microphone
mode, 24 Volt phantom power shall be
applied to the Input 1. Channel 2 shall be
electronically balanced with a switchable
input sensitivity between mic and line
levels. When in the microphone mode, 24
Volt phantom power shall be applied to the
Input 2. Channels 3 and 4 shall be
electronically balanced line-level inputs
with Channel 4 including stereo RCA jacks.
Additionally, the output from Channel 4
input shall be made available via an
electronically balanced output with a Eurotype connector and a separate level
control. The module port shall be capable
of controlling both mute buses. Depending
upon the module chosen, it can be set up
for master configuration. When the input
signal to an input module commands a
mute function, Channels 1-4 shall be
muted.
Only Channel 1 shall have a continuously
variable mute threshold control on the rear
panel. Setting this control fully clockwise
shall defeat the Channel 1 mute function.
The mute level threshold for Channel 1
shall be increased as the control is turned
clockwise. When the signal level in Channel
1 exceeds the mute threshold, Channels 2-4
shall be muted. Channels 1 and 2 shall
include a switch to defeat its muting
function. When the switch is out, the
channel shall be muted. When the switch is
in, the channel cannot be muted.
UMA™ 752 MIXER/AMPLIFIER
Specifications
The mixer amplifier shall have a direct
4 Ohm output, and 3 transformer-balanced
outputs – 100 Volt, 70 Volt, and 8 Ohm. The
amplifier shall include clipping protection
via SPS™. The unit shall be called the
Peavey Architectural Acoustics Division
model UMA 752.
Warranty
Three + two limited warranty
Note: For details, refer to the warranty
statement. Copies of this statement may be
obtained by contacting Peavey Electronics
Corporation, P.O. Box 2898, Meridian,
Mississippi 39302-2898.
+Vfan
+Vmod
-Vlo
+Vlo
AC RECEPTACLE
(120V UNIT ONLY)
+V
HI
HIGH
MASTER
LEVEL
+
-
DEFEA T
CH 4
LEVEL
PREAMP
SIGNAL
SIGNAL
PREAMP
MUTE
MUTE
PREAMP
LINE
SENS
MIC
+
R
STEREO IN
L
+
-
CH 4 NI
+
-
CH 3 NI
+
-
+24V
CH 2 NI
CH 1
MIC
TEL
-
CH 1 NI
-
MIC
+
MUTE 2
MUTE 1
IN
GND
OUT
24V
24V
MOD ULE
PO RT
CH 3
LEVEL
CH 2
LEVEL
MU TE2
ACTIVE
SIGNAL
TEL
MIC
SENS
SIGNAL
PREAMP
MUTE
MUTE
CH 1
LEVEL
INPUT
LEVEL
MU TE1
ACTIVE
DEFEA T
MU TE2
THRESH
CH 4 OUT
LEVEL
MU TE2
MU TE1
CH 4 OUT
LOW
LO
Fuse
AC Input
2
C SHD
MASTER
LEVEL
CONTROL
1
EXT
MUTE
RV C
V
ENAB LE
BYPASS
LOOP
PA
SPS
Power
Switch
SIGNAL
POWER SUPPLY
POWER
-Vhi
+Vhi
COM XFMR
100V 70V 8
PWR
IN
L
PRE
OUT
N
G
OUTP UTS
4
GND
The master section shall include front panel
bass and treble EQ controls, each with a
±10 dB range of operation. A front panel
master level control shall control the output
signal level of the preamp/mixer. The
capability to insert an external device shall
be included via two RCA jacks. A loop
switch shall bypass the loop point. Remote
master level control capability shall be
included along with remote control for each
mute bus.
Specifications
UMA™ 752 MIXER/AMPLIFIER
UMA™ 752 MIXER/AMPLIFIER FRONT
UMA™ 752 MIXER/AMPLIFIER BACK
FUSE
Peavey Electronics Corporation • 711 A Street • Meridian, MS 39301
601-483-5376 • Fax 601-486-1678 • http://aa.peavey.com
©2002
Printed in the U.S.A. 3/02
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