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PA and Sound
Reinforcement System
August, 2019
By : Engr. Alo Oluwagbenga MNSE, MNIEEE
(Assistant Chief Engineer, NTA Headquarters, Abuja)
Phone: 08054463767
E-Mail : alooluwagbenga@gmail.com
OVERVIEW OF PRESENTATION
Definition of Terms
Considerations For PA
Components of PA system
The Signal Flow
The Set up
PUBLIC ADDRESS SYSTEM
Public Address Systen is an sound
processor and distribution system with a
microphone,, amplifier and a
transducer(loudspeakers), used to allow
a person to address a large public.
Basically for speeches.
PUBLIC ADDRESS SYSTEM
PUBLIC ADDRESS SYSTEM
Public Address Systen is an electronic
sound amplification and distribution
system with a microphone, amplifier and
a transducer(loudspeakers), used to
allow a person to address a large public.
SOUND REINFORCEMENT SYSTEM
This is the combination of microphones,
signal processors, amplifiers, and
loudspeakers in enclosures all controlled
by a mixing console that makes live
sound(Vocals and musical equipments)
or pre-recorded audio materials
sounds louder and may also distribute
those sounds to a larger or more distant
audience via loud speakers in the form
of sound.
SOUND REINFORCEMENT SYSTEM
It is a functional arrangement of electronic
components designed to amplify sound(speech,
music, from other musical equipment)
To reinforce a sound is to enhance or to give
sound more power.
The difference between PA system and Sound
reinforcement is that PA is simple and it is only
for speeeches, but Sound Reinforcement more
elaborate(i.e has more components ) used for
singing, music , speeches and reinforcement of
sound sources.
PA SYSTEM BASIC COMPONETS
BLOCK DIAGRAM
SOUND REINFORCEMENT SYSTEM
Room Size & Acoustics
Number of People & Location
Speaker Placements
Inputs
Mixing Console needs to sound realistic
Equaliser
Amplifiers
Speakers
Headphone
CONSIDERATIONS &
REQUIREMENT
ROOM SIZE & ACOUSTICS
Before you set up any audio system, you need
to consider the environment it will be in. Does
the room have hard surfaces that can reflect the
sound? (i.e. sheetrock walls, glass windows,
tiled floors, wooden pews, vaulted hardwood
ceilings or a metal roof with beams and
columns) Perhaps it’s filled with stuff that
absorbs sound like heavy drapes, carpeting, and
padded chairs. It’s not that one environment is
better than another, but what type of room most
suitable.
POSITION OF SPEAKERS
STEREO SPEAKER PAIR COVERAGE
STEREO SPEAKER PAIR COVERAGE
NUMBER OF PEOPLE & LOCATION
For a 50-100 seats hall, the required
skill to set-up a the sound system will be
less than it would be for 2,000 seat
mega-hall. The equipment needed to
cover a small space is typically less
difficult to connect and operate. The
same applies for an enclosed space or
an open air space.
MIXER AMPLIFIER
COMPONENTS OF PA SYSTEM
The Microphones(wired/wireless)
The Instruments/Equipment
The Audio Mixer/ Console
The Cables
 The Snake
The Sound processors
The Amplifiers
The Loud Speaker
AUDIO MONITORING
Headphones-These are used to
monitor audio more closely.
Without it you can’t hear the
problems you need to prevent. It
can be really helpful to check
your audio on multiple sources.
A quality set of headphones will
help you hear details.
HEADPHONES
EQUIPMENT RACK UNIT-SOUND
PROCESSORS
SNAKE CABLE
SPEAKON CABLE
AMPLIFIER
SPEAKERS-SUBWOOFER
SPEAKERS-MID RANGE
SPEAKERS
SOUND SETUP-AMPLIFIERS ETC

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PA and sound system

  • 1. PA and Sound Reinforcement System August, 2019 By : Engr. Alo Oluwagbenga MNSE, MNIEEE (Assistant Chief Engineer, NTA Headquarters, Abuja) Phone: 08054463767 E-Mail : alooluwagbenga@gmail.com
  • 2. OVERVIEW OF PRESENTATION Definition of Terms Considerations For PA Components of PA system The Signal Flow The Set up
  • 3. PUBLIC ADDRESS SYSTEM Public Address Systen is an sound processor and distribution system with a microphone,, amplifier and a transducer(loudspeakers), used to allow a person to address a large public. Basically for speeches.
  • 5. PUBLIC ADDRESS SYSTEM Public Address Systen is an electronic sound amplification and distribution system with a microphone, amplifier and a transducer(loudspeakers), used to allow a person to address a large public.
  • 6. SOUND REINFORCEMENT SYSTEM This is the combination of microphones, signal processors, amplifiers, and loudspeakers in enclosures all controlled by a mixing console that makes live sound(Vocals and musical equipments) or pre-recorded audio materials sounds louder and may also distribute those sounds to a larger or more distant audience via loud speakers in the form of sound.
  • 7. SOUND REINFORCEMENT SYSTEM It is a functional arrangement of electronic components designed to amplify sound(speech, music, from other musical equipment) To reinforce a sound is to enhance or to give sound more power. The difference between PA system and Sound reinforcement is that PA is simple and it is only for speeeches, but Sound Reinforcement more elaborate(i.e has more components ) used for singing, music , speeches and reinforcement of sound sources.
  • 8. PA SYSTEM BASIC COMPONETS
  • 11. Room Size & Acoustics Number of People & Location Speaker Placements Inputs Mixing Console needs to sound realistic Equaliser Amplifiers Speakers Headphone CONSIDERATIONS & REQUIREMENT
  • 12. ROOM SIZE & ACOUSTICS Before you set up any audio system, you need to consider the environment it will be in. Does the room have hard surfaces that can reflect the sound? (i.e. sheetrock walls, glass windows, tiled floors, wooden pews, vaulted hardwood ceilings or a metal roof with beams and columns) Perhaps it’s filled with stuff that absorbs sound like heavy drapes, carpeting, and padded chairs. It’s not that one environment is better than another, but what type of room most suitable.
  • 16. NUMBER OF PEOPLE & LOCATION For a 50-100 seats hall, the required skill to set-up a the sound system will be less than it would be for 2,000 seat mega-hall. The equipment needed to cover a small space is typically less difficult to connect and operate. The same applies for an enclosed space or an open air space.
  • 18. COMPONENTS OF PA SYSTEM The Microphones(wired/wireless) The Instruments/Equipment The Audio Mixer/ Console The Cables  The Snake The Sound processors The Amplifiers The Loud Speaker
  • 19. AUDIO MONITORING Headphones-These are used to monitor audio more closely. Without it you can’t hear the problems you need to prevent. It can be really helpful to check your audio on multiple sources. A quality set of headphones will help you hear details.