1. Honeywell PA/VA Training

2. In one word , loudspeaker is to play sound
What’s Loudspeaker?
A loudspeaker (or "speaker") is an electroacoustic transducer that produces sound in response to an electrical audio signal input.
We need them to:
PA: Play background music and voice in public applications
VA: To clearly convey voice information in emergencies
In one word , loudspeaker is to play sound

3. Important Specs of Loudspeaker
Power/Impedance
SPL/Sensitivity
Directionality
Dispersion Angle

4. Definition Power/Impedance SPL/Sensitivity Directionality
Power rating is the amount of energy that a loudspeaker can handle without distortion. It is directly proportional to the volume. Impedance is the resistance within the enclosure to a flow of power from a
speaker’s amplifier. It is used to limit the desired amount of power transferred to the speaker.
Sound pressure level (SPL) is the loudness of sound. The unit for measuring SPL is Decibel (dB). Sensitivity is a measurement of the amount of sound output derived from a speaker with one watt of power input.
Directionality
Dispersion Angle
Directionality indicates the spatial distribution of the sound intensity. For directional sound source, the SPL in different direction from the sound source will be different, which can be seen from the polar diagram.
Dispersion angle defines the space a loudspeaker can cover. Usually, the bigger dispersion angle, the less loudspeakers can be used in the same space.

5. Some important Charts Polar Diagram
To show the sound distribution in all directions
Circuit Diagram
To show how to connect the line of the transformer to the constant voltage amplifier
Power tapping

6. Signal-to-Noise Ratio
Initial sound signal (in dB) compared to the background (or ambient)sounds
Ideal: 10 – 15 dB above average ambient sound
Each doubling of power to a loudspeaker OR doubling of loudspeakers results in an increase of 3dB
Doubling the distance between the listener and the sound source results in a 6dB loss

7. Frequency Response Frequency Response Curve
Ideal range: 150 – 11KHz
Average Human Listening Range: 200 – 5000 Hz
Frequency response should be as flat as possible for the most intelligible sound
Most Agency Standards require within 10 to15 B windows
Frequency Response Curve
- A visual representation of the dB level over a specific frequency range

8. Harmonic Distortion
The average listener can detect 2% total harmonic distortion (THD)
15% distortion is considered to be non-intelligible
Contributing Factors
Tolerance of the message generator and amplifier
Loading of the audio amplifier (load vs. available power)
Mechanical factors
Wires touching the cone of the speaker
Excessive voltage drop in speaker line
Vibration caused by poor installation
Damaged speakers

9. Reverberation Closely spaced echoes that cannot be distinguished
Minimizing reverberation is key to achieving acceptable intelligibility
Factors influencing reverberation
Room size (volume and surface area)
Reflective properties of room surfaces
Speaker orientation
Decibel output

10. Categories of Loudspeaker
Ceiling loudspeaker
“Hottest” loudspeaker
Indoor application
Types:
Power of loudspeaker: 6/3/1.5W is the most common
Size of speaker:2’’ to 8’’, 5’’&6.5’’ is the most common
Housing material: ABS and iron is the most common
Appendix: Metal dome , ABS dome ,surface installation appendix etc.

11. Categories of Loudspeaker
Projection loudspeaker
Outstanding feature: Strong directionality in sound distribution
Particularly suitable for some narrow and long space, like tunnels and corridors
Type:
Direction: Unidirectional and bidirectional
Power of loudspeaker: 10W, 20W is the most common
Housing materials: ABS and aluminum

12. Categories of Loudspeaker
Cabinet loudspeaker
Good use for playing music with subwoofer and tweeter
Very common use in indoor applications such as meeting rooms, hotels etc.
Type:
Power of loudspeakers: 20 to 80W is very common.
Housing materials: ABS for indoor, aluminum for very little outdoor use

13. Categories of Loudspeaker
Column loudspeaker
Able to play music and voice in big area
Water and dust proof ability are usually required
Usually used in outdoor applications
Type:
Power of loudspeaker: full range from 20W to 80 W, with several speakers.
Housing materials: ABS, Iron & Aluminum

14. Categories of Loudspeaker
Horn loudspeaker
Able to play voice in much bigger volume than other categories, no good music performance as others
Special design in speakers and struture
Best choice in spacious and noisy applications, such as train stations, factories etc.
Type:
Power of loudspeaker: 10 W and above.
Housing material: ABS and aluminum is common

15. Categories of Loudspeaker
Pendant loudspeaker
Less common used loudspeaker
Wider sound distribution directions
In some indoor applications without false ceiling ,it takes the place of ceiling loudspeaker

16. What We Want for Loudspeaker ?
Beautiful appearance
Cost-effective
Excellent acoustic performance
Robust material
Easy for installation

17. How to choose speaker wisely?
Per project architecture design for environmental match
Ceiling roof ceiling speaker
The room without ceiling surface mount, pendant speaker, wall mounted, indoor column speaker
Outdoor places outdoor column, horn
Garden/grass land weather proof garden or rock speaker
Hall/conference room stylish/fashion wall mount, indoor column speaker
Fire Alarm request EN54 approved speaker
Per EASE Simulation
SPL test
STI test

18. Comply with international safety laws
Secure and Effective
European standard for VA loudspeaker
European Restriction of Hazardous Substances
Fire resistant - compact and high strength ABS material
Anti-corrosion - pass the 24 hours salt spray test
Higher sensitivity - magnet steel Y30 property, low carbon content in T-iron
European access standard for electronic products
Comply with international safety laws

19. Excellent Acoustic Performance
Clear and intelligible audio performance

20. VA :EN 54-24 Loudspeaker Range

21. Voice Alarm Loudspeakers
Cabinet Loudspeaker
( 1 type,6W)
Ceiling
Loudspeaker
(2 types,6W)
Column Loudspeaker
(2 types, 20W&40W)
Projection Loudspeaker
( 3 types, 10W & 20W)
Horn speaker (1 type, 15W) Coaxial ceiling (1type, 24W)
Ten EN54-24 models

22. Cabinet Loudspeaker L-VWM06A/EN L-VWM06A/EN(C)
6W metal cabinet loudspeaker，4’’speaker
Clear voice message reproduction and good music playing effect
Pretty design with patent
Simple power setting and easy installation
Available with or without capacitor( part number without “(C)”) to work with different system

23. High sensitivity to produce stronger sound output
Specifications
SPECIFICATIONS
L-VWM06A/EN L-VWM06A/EN(C)
Max power
9 W
Rated power
6 W
Power 100V
6 W / 3 W / 1.5 W / 0.75 W
Power 70V
3 W / 1.5 W / 0.75 W / W
SPL at 6W/1W (100Hz-10KHz,1m)
98dB/91dB
SPL at 6W/1W (100Hz-10KHz,4m)
86dB/79dB
Frequency range (-10dB)
300 Hz -15 kHz
Rated input voltage
100 V/70V
Rated impedance
1.7 KΩ /3.3K Ω/6.7K Ω/13K Ω
Connection
Ceramic Terminal
Dimensions (W x H x D)
170 x 170 x 63 mm
Diameter of speaker
4"
Weight
1.56 kg
Color
White (RAL 9003)
Thermal Fuse
150°C
DC Blocking Capacitor
Yes (2.2uF) L-VWM06A/EN(C)
No L-VWM06A/EN
High sensitivity to produce stronger sound output
Small and light design

24. Suitable Applications
Stairway
Control Center
Boarding Gate
Good choice for indoor applications

25. Ceiling Loudspeaker L-VCM6A/EN L-VCM6B/EN
6W Voice alarm ceiling loudspeaker
Two size for choice ,5’’ or 6.5’’ speaker unit
Clear voice message reproduction
Robust metal housing with metal back dome to protect the inside components
Available with or without capacitor( part number without “(C)”) to work with different system

26. Specifications SPECIFICATIONS L-VCM6A/EN L-VCM6A/EN(C)
L-VCM6B/EN L-VCM6B/EN(C)
Max power
9 W
Rated power
6 W
Power 100V
6 W / 3 W / 1.5 W / 0.75 W
Power 70V
3 W / 1.5 W / 0.75 W / W
SPL at 6W/1W (100Hz-10KHz,1m)
99dB/91dB
100dB/91dB
SPL at 6W/1W (100Hz-10KHz,4m)
87dB/79dB
88dB/79dB
Frequency range (-10dB)
170 Hz -20 kHz
180 Hz -20 kHz
Dispersion angle(1KHz/-6dB)
170°
175°
Rated input voltage
100 V/70V
Rated impedance
1.7 k Ω / 3.3 k Ω / 6.7 k Ω / 13 k Ω
Connection
Ceramic Terminal
Dimensions
Φ222 mm x 129 mm
Φ181mm x 129 mm
Hole cut-out size
Φ195 mm
Φ155 mm
Diameter of speaker
6.5"
5"
Weight
1.57 kg
1.29 kg
Front grill color
White (RAL 9003)
Dome color
Red (RAL3000)
Thermal Fuse
150°C
DC Blocking Capacitor
Yes (2.2uF) L-VCM6A/EN(C)
Yes (2.2uF) L-VCM6B/EN(C)
No L-VCM6A/EN
No L-VCM6B/EN
Wide frequency response to convey clearer voice message
Wide dispersion angle to cover more space

27. Column Loudspeaker L-VOM20A/EN L-VOM20A/EN(C)
20W & 40W full range outdoor column ，4’’speakers
Pretty design with patents
Fire resistant aluminum housing to protect inside components
Intelligible voice and superior sound reproduction
Superior dust and water proof ability, complying with IP66 standard
Available with or without capacitor( part number without “(C)”) to work with different system

28. Specifications Multiple power tapping for choice
Part Number
L-VOM20A/EN L-VOM20A/EN(C)
L-VOM40A/EN L-VOM40A/EN( C)
Max power
30 W
60 W
Rated power
20 W
40 W
Power 100V
20W/10W/5W/2.5W
40W/20W/10W/5W
SPL at 20W/1W (100Hz-10KHz,1m)
103dB/92dB
108dB/94dB
SPL at 20W/1W (100Hz-10KHz,4m)
91dB/80dB
96dB/82dB
Frequency response(-10 dB)
300Hz ~15K Hz
Rated input voltage
100 V / 70 V
Rated impedance
500Ω/1kΩ/2kΩ/4kΩ
250Ω/500Ω/1kΩ/2kΩ
Connection
fire-resistant cable
Dimensions (W×H×D)
165 mm x 150 mm x 344 mm
165 mm x 150 mm x 568mm
Weight
3.75 kg
5.75 kg
Color
White(RAL9003)
Speaker size
4"×2
4"×4
Material
Aluminum
DC Blocking Capacitor
Yes (2.2uF) L-VOM20A/EN(C)
Yes (2.2uF) L-VOM40A/EN(C)
No L-VOM20A/EN
No L-VOM40A/EN
Multiple power tapping for choice
High sensitivity to produce stronger sound output

29. Suitable Applications
Garden
Square
Factory
Stadium
Superior choice for spacious indoor/outdoor environment

30. Unidirectional Projection Loudspeaker
L-VJM10A/EN L-VJM10A/EN(C)
L-VJM20A/EN L-VJM20A/EN(C)
10W& 20W unidirectional projection loudspeaker，5’’speaker
Wide frequency response range，low distortion
Outstanding design with patent
Fire resistant aluminum housing to protect inside components
Excellent dust and water proof ability, complying with IP65 standard
Available with or without capacitor( part number without “(C)”) to work with different system

31. Specifications SPECIFICATIONS L-VJM20A/EN L-VJM20A/EN(C)
Max power
30 W
20 W
Rated power
10 W
Power 100V
20W / 10W/5W/2.5W
10W /5W/2.5W/1.25W
SPL at rated power/1W
(100Hz-10KHz,1m)
101dB/90dB
98dB/90dB
(100Hz-10KHz,4m)
89dB/78dB
86dB/78dB
Frequency response ( - 10dB )
150 Hz - 20 KHz
Rated input voltage
100 V/70 V
Rated impedance
500 Ω/1K Ω/2KΩ/4KΩ
1K Ω/2KΩ/4KΩ/8KΩ
Connection
Fire-resistant Cable
Dimensions(D x L)
Φ140 mm x195 mm
Weight
2.65 kg
2.62 kg
Color
White (RAL 9003)
Material
Aluminum
DC Blocking Capacitor
Yes (2.7uF) L-VJM20A/EN(C)
Yes (2.7uF) L-VJM10A/EN(C)
No L-VJM20A/EN
No L-VJM10A/EN
Multiple power tapping for choice
Wide frequency response to convey clearer voice message

32. Bidirectional Projection Loudspeaker
L-VBM20A/EN L-VBM20A/EN(C)
20W bidirectional projection loudspeaker，5’’speaker
Elegant design with patents
Robust fire resistant aluminum housing to protect inside components
Excellent dust and water proof ability, complying with IP65 standard
Available with or without capacitor( part number without “(C)”) to work with different system

33. Multiple power tapping for choice
Specifications
SPECIFICATIONS
L-VBM20A/EN L-VBM20A/EN(C)
Max power
30 W
Rated power
20 W(10W×2)
Power 100V
20W / 10W / 5W / 2.5W
SPL at 20W/1W (100Hz-10KHz,1m)
99dB/87dB
SPL at 20W/1W (100Hz-10KHz,4m)
87dB/75dB
Frequency response ( - 10dB )
150 Hz - 15 KHz
Rated input voltage
100 V/70 V
Rated impedance
500 Ω/1K Ω/2KΩ/4KΩ
Connection
Fire-resistant Cable
Dimensions(D x L)
Φ140 mm x195 mm
Weight
3.23 kg
Color
White (RAL 9003)
Material
Aluminum
DC Blocking Capacitor
Yes (2.7uF) L-VBM20A/EN(C)
No L-VBM20A/EN
Multiple power tapping for choice

34. Thank You!