Honeywell PA/VA Training

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

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

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.

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

Excellent Acoustic Performance Clear and intelligible audio performance

VA :EN 54-24 Loudspeaker Range

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

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

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 taps @ 100V 6 W / 3 W / 1.5 W / 0.75 W Power taps @ 70V 3 W / 1.5 W / 0.75 W / 0.375 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

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

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

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 taps @ 100V 6 W / 3 W / 1.5 W / 0.75 W Power taps @ 70V 3 W / 1.5 W / 0.75 W / 0.375 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

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

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 taps @ 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

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

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

Specifications SPECIFICATIONS L-VJM20A/EN L-VJM20A/EN(C) Max power 30 W 20 W Rated power 10 W Power taps @ 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

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

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 taps @ 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

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