TM
PG ALTA SERIES
WIRED MICROPHONE
PGA27
USER GUIDE
© 2015 Shure Incorporated
27A27347 (Rev. 3)
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Mixer
When connecting to a mixer, use only balanced, microphone-level inputs with phantom power. Most mixers have a switch
for phantom power, so make sure phantom power is on for that channel.
Phantom Power
All condenser microphones require phantom power to operate. This microphone performs best with a 48 V DC supply (IEC-
61938), but it can operate with lower voltages.
Phantom power is provided by the mixer or audio interface that the microphone is connected to, and requires the use of a
balanced microphone cable: XLR-to-XLR or XLR-to-TRS. In most cases, there is a switch or button to activate the phantom
power. See the user guide for the mixer or interface for additional information.
Operation
Positioning the Microphone
Mounting the Microphone
The front of the microphone is marked by the
Position this side toward the sound source.
logo.
Use the supplied shockmount to mount the microphone. To
secure the microphone, place it in the shockmount and tighten
the ring at the bottom.
Proximity Effect
Directional microphones progressively boost bass frequencies
as the microphone is placed in closer proximity to the source.
This phenomenon, known as proximity effect, can be used to
create a warmer, more powerful sound.
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Setting Attenuation
The attenuation switch lets you reduce the signal level without altering the frequency response. This can prevent extremely loud
sounds from overloading the microphone.
0dB For "quiet" to "normal" sound levels.
-15dB For use with extremely loud sound sources such as drums, horns, or loud guitar cabinets.
Low-Frequency Response Switch
The low-frequency response switch changes the frequency response of the microphone.
Flat response (bypass)
This setting provides natural sound with no low-frequency reduction. Use the flat setting when recording sources that
extend into the low-frequency range (piano, bass, percussion, etc.).
Low frequency cutoff
This setting provides a reduction in low frequencies to reduce noise or shape the tone. Use this setting to:
- Reduce floor rumble and low-frequency room noise from heating and air conditioning systems
- Decrease the volume of low frequencies that cause instruments to sound dull or muffled
- Shape the tone on sources which do not produce much bass (violin, acoustic guitar, flute, etc.)
- Reduce plosives (the pop that is heard when a vocalist says a word starting with the letter P). If possible, use a pop filter
alone or in combination with the low-frequency reduction setting.
Applications
The following table provides a basic starting point for several instruments. Shure offers additional educational publications on
Application
Voice
Distance from source Tips
1-3 inches (2-8 cm)
Use a pop filter (Shure PS-6) to prevent plosives.
Acoustic guitar
6-12 inches (15-30 cm) Place near the sound hole for a full sound, or near the
12th fret for a balanced, natural sound.
Drums
3-6 feet (1-2 m)
Place in front of the drum kit to capture more of the kick
drum, or as an overhead (above the kit, facing down) to
capture more cymbals. Consider using additional Shure
microphones placed on individual drums for more mixing
flexibility and a thicker sound.
Amplifiers
1-6 inches (2-15 cm)
1-6 feet (30 cm - 2 m)
Aim towards the center of the speaker for a clear,
aggressive sound, or towards the edge of the speaker for
a mellow sound.
Strings or horns
Full band
For a single instrument, place the microphone close to
the source. For a horn or string section, arrange players
at an equal distance from the microphone.
Facing towards the
group, centered
Use the -15 db attenuation switch if the band is very loud
to prevent distortion.
between instruments
Tip: Close microphone placement results in a full sound due to the proximity effect. Placing the microphone farther from the
source results in more room ambience.
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Optional Accessories and Replacement Parts
7.6 m (25 ft.) Cable (XLR-XLR)
5/8" to 3/8" Thread Adapter
C25J
31A1856
95A15045
A27SM
PS-6
Microphone Stand Adapter
ShureLock® Rubber Isolated Shock Mount
Popper Stopper® Pop Filter with Metal Gooseneck and
Microphone Stand Clamp
Black Foam Windscreen for BETA 27, KSM27, KSM32,
KSM42, KSM44, KSM44A, PG27, PG42 and SM27
A32WS
Specifications
Type
Electret Condenser
Polarity
Positive pressure on diaphragm produces positive voltage on pin 2
with respect to pin 3
Polar Pattern
Switch
Cardioid
15 dB Pad, High Pass Filter
Frequency Response
Connector
20 to 20,000 Hz
Three-pin professional audio (XLR), male
Output Impedance
Weight
at 1 kHz, open circuit voltage
453 g (1.0 lbs)
115 Ω, actual
Housing
Sensitivity
at 1 kHz, open circuit voltage
Cast Zinc
Power Requirements
-35 dBV/Pa [1] (17.8 mV)
48 V DC phantom power (3.9 mA)
[1] 1 Pa=94 dB SPL
Maximum SPL
1 kHz at 1% THD, 1 kΩ load
130 dB SPL Pad Off (145 dB SPL Pad On)
20
15
0,61 m (2 ft.) from sound source
10
5
0
-5
-10
-15
-20
-25
-30
20
100
1k
10k
20k
Hz
Typical Frequency Response
1,000 Hz
Typical Polar Pattern
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Certifications
This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking.
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
Jakob-Dieffenbacher-Str. 12
75031 Eppingen, Germany
Phone: 49-7262-92 49 0
Fax: 49-7262-92 49 11 4
Email: [email protected]
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55.9 mm diameter (2.2 in.)
152.8 mm (6.02 in.)
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Europe, Middle East, Africa:
PT. GOSHEN SWARA INDONESIA
Kompleks Harco Mangga Dua Blok L No. 35 Jakarta Pusat
I.16.GSI31.00501.0211
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