Shure Microphone PGA27 User Manual

TM  
PG ALTA SERIES  
WIRED MICROPHONE  
PGA27  
USER GUIDE  
© 2015 Shure Incorporated  
27A27347 (Rev. 3)  
 
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.  
4
 
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.  
5
 
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  
6
 
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  
7
 
55.9 mm diameter (2.2 in.)  
152.8 mm (6.02 in.)  
 
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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