Shure 3200, A1200C, A1200MX, 1200 User Manual

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Compact Modular
Sound Reinforcement System
CONTENTS
GENERAL DESCRIPTION
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CONTROLS. INDICATORS
Input Channel Controls Master Controls Headphones Indicators
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Powerswitch
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INPUTS. OUTPUTS. SWITCHES
Audio Inputs
Preamp Outputs External Device Loop
Speakeroutputs
Reverb Defeat Switch
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Phantom Power Switch Power
Fuse SETUPS OPERATION
DO'S AND DON'TS
TROUBLESHOOTING
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SPECIFICATIONS
BLOCKDIAGRAM
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THE SHURE AUDIOMASTERB SYSTEM:
Model 1200 Powermixer
Model 3200 Loudspeaker
Model A1
200MX Expansion Module
Model A1 200C Portable Case
CONGRATULATIONS! You have purchased the Shure Model 1200 Powermixer, the finest compact mixer-amplifier available today.
The Model 1200 Powermixer includes a flexible microphone mixer with six inputs for high- or impedance sources and a 200-watt power amplifier. The 1200 is human engineered for ease of setup and operation. Connection of microphones and other equipment (tape recorder, equalizer, effects device, remote amp) is fast and convenient.
The AUDIOMASTER
System,
1200 Powermixer and Model 3200
consisting of the Model
Loudspeaker(s), works equally well for sound reinforcement or record­ing of music, vocals, or speech.
The Model 1200 Powermixer is rack-mountable or portable; a high-power,
&input mixer-amplifier, ex­pandable to 8 or 10 inputs, with famous Shure versa­tility and ruggedness. Inputs to the Powermixer accept both high- and low-impedance microphones as well as amplified instruments or other high-level sources.
Individual
Input Attenuation controls, with overload indicators, are continuously adjustable to prevent input overload. The Powermixer has bui It-in rever­beration with individual channel and overall level adjustments. Other effects devices or an equalizer are easily connected via a post-Master control pro­gram loop. An integral power amp Limiter prevents overload distortion over a wide input signal range.
Pre-Volume Monitor send controls and a pre-Master
Volume Tape Output provide maximum usefulness
in performance or recording applications. The con­trol panel is human-engineered with color-coded knobs for error-free adjustments while LED readouts give instant visual notice of overload and operating status.
The Model 3200 two-way, time-corrected loudspeaker
is a high-power unit designed to be compatible with the Model 1200 Powermixer. A wide-range frequency
response and excellent sound quality suit it for a great variety of performance and public-address situations.
AUDIOMASTER System gives you outstanding
The sound capability; it's maximally versatile and port­able, and it's backed by Shure's traditional quality and reliability.
low-
Outstanding features of AUDIOMASTER: 1200
POWERMIXER
H
Works equally well for sound reinforcement or
recording of speech, vocals, and music Designed for churches, schools, clubs, civic and
business organizations, and small performing
H
Operates as a mixer-amplifier for a wide variety of
input sources
Supplied with six input channels (A1 200MX Expan­sion Modules are available for increase to a total of eight or ten inputs)
H
HI and LO Z inputs may be used simultaneously
Switchable input attenuators on channels 1 and 2 accommodate high-input-level sources
Phantom power for condenser microphones is avail-
able at any low-impedance input
Built-in spring-type reverb, with independent level
controls for each input
H
Provides external device loop for effects device or equalizer between PROGRAM MIX OUTPUT and
POWER AMPLIFIER INPUT
H
Pre-Volume MONITOR mix and pre-Master Vol-
ume TAPE Outputs
H
Integral switchable power amplifier Limiter pre-
vents overload distortion
H
High speaker-power output-200 watts into a4-ohm
load
H
An accessory speaker cable (A50SC) is available:
15 m (50 ft) with standard phone plugs, for quick
speaker hookup
Rack mountable or portable with accessoryAl200C
Carrying Case
H
Compact and lightweight: only 178 mm (7 in.) high, weighs only 12.3 kg (27
Ib)
Listed by Underwriters Laboratories and by Cana-
dian Standards Association as certified
3200
LOUDSPEAKER
Big-system sound quality in a compact enclosure
H
12-inch high-temperature woofer critically tuned
to a sturdy, vented enclosure
H
Constant-directivity type high-frequency horn with
high-frequency compression driver (tweeter)
H
Special TIME SYNCTM time-corrected crossover
network with tweeter protection circuit
H
Metal grille and resilient corner protectors for max­imum durability
goups
3
FRONT PANEL CONTROLS, INDICATORS..
INDIVIDUAL INPUT CHANNEL CONTROLS
MONITOR
Controls channel monitor send
independently of channel volume control. Adjust for desired level when using a monitor system, or for
auxiliaryortape recording mix.
REVERB
Controls amount of reverberation on channel (use low settings for vocals, high settings for instru­ments.)
EQUALIZATION
TREBLE
Inner concentric control sets channel treble boost or cut for desired tone shaping.
.
Additional information MONITOR
Control precedes VOLUME ("pre­fader") and other channel controls allowing independent monitor mix affected only by INPUT ATTEN­UATION.
REVERB
Control follows INPUT ATTENUA­TION, EQ and VOLUME controls.
TREBLE
Adjusts channel k1O dB at does not affect MONITOR output.
10
kHz;
BASS
Outer concentric control sets channel bass boost or cut for
desired tone shaping.
INPUT OVERLOAD INDICATOR
Lights when the input signal is
too high. Adjust ATlON control until only
flashes are noted on signal
sional
peaks.
INPUT ATTENUATION
Adjusts input attenuation for each channel. Suggested initial set­tings: condenser microphones or amplified instruments -1 normal vocals or speech loud vocals ing
0.
VOLUME
Allows individual setting of chan­nel input for desired signal mix. If setting is consistently low (1 or 2) or high ATTENUATION adjustment.
IMPORTANT: Set this Control fully counterclockwise (off) when channel is unused.
(8
INPUTATTENU-
-1
2 to
-24;
distant mik-
to
lo),
check INPUT
occa-
2
to -30;
-6
to
-1
2;
BASS
Adjusts channel -+I0 dB at 100
Hz;
does not affect MONITOR
output.
INPUT OVERLOAD INDICATOR
Lights approximately 3 dB prior to clipping of preamp or input channel equalizer.
signal-to-noise ratio, adjust INPUT ATTENUATION for occasional flashes
operation; constant light means distortion.)
INPUT ATTENUATION
Attenuates input preamplifier gain up to 30 dB to permit channel to accept any signal level from mi­crophones to direct instrument pickups, or high level (aux) sig­nals from amplified instruments or tape recorders; almost any input device can be accommodated. (See rear panel Channel AUX/MIC switches.)
VOLUME
Follows INPUT ATTENUATION and EQUALIZATION controls; does not affect channel MONI­TOR level.
(no light may mean noisy
For optimum
1
&
2
MASTER CONTROLS
Additional information
MONITOR MASTER
Controls overall monitor mix level to MONITOR OUTPUT jack.
REVERB RETURN
Controls reverb mix level to pro­gram mix.
MONITOR EQ
TREBLE
Inner concentric control sets MON­ITOR mix signal treble boost or cut
for desired tone shaping.
BASS
Outer concentric control sets
MONITOR mix signal bass boost or cut for desired tone shaping.
POWER AMPLIFIER LIMITER
With switch "IN", prevents overload
distortion at speaker and head­phone outputs by not allowing the power amplifier to be overdriven (with switch "OUT", Limiter is dis­abled.)
MASTER VOLUME
Adjusts overall level of mixed sig­nals at Program Mix Output, Speak­er Output, and Headphones Out-
put.
MONITOR MASTER
Independent of other master con-
trols except for MONITOR
EQ.
REVERB RETURN
Not affected by MONITOR con­trols. (To defeat REVERB, see rear panel REVERB DEFEAT SWITCH.)
TREBLE
Adjusts mixed MONITOR signal *I0 dB at 10 kHz.
BASS
Adjusts mixed MONITOR signal
210 dB at 100 Hz.
POWER AMPLIFIER LIMITER
Threshold: 1.5 dB below the onset of clipping at speaker output. Pre­vents overload distortion up to 15 dB beyond onset of Limiter action.
MASTER VOLUME
Control does not affect level at Tape Output or Monitor Output.
HEADPHONES CONTROL
Adjusts level of mixed signal at
Headphones Output.
HEADPHONES JACK
Standard quarter-inch stereo phone jack accepts
mono or stereo headphones.
4-
to 4000-ohm
HEADPHONES CONTROL
Follows MASTER VOLUME and LIMITER.
HEADPHONES JACK
Output is mono only; two pairs of mono headphones can be wired to this jack. (Connect the conductor of one set of headphones to the tip of a stereo phone plug; connect the conductor of the second set to the ring of the plug; connect both shields to the sleeve.) Stereo
phones will also function in mono
when plugged into this jack.
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