Loud Speaker

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The emergency signal consists of a light signal (blue and red flashing) and an audible signal. Accordingly, the audible signals are an integral part of the signal. The loudspeaker enables the car to detect the siren as soon as possible, thus helping it to move, and requires an appropriate volume, i.e. sound pressure.
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11 products in total, page 1: 1 - 11 / 111

• 20W, 16Ω speaker
• Speaker with magneto-dynamic neodymium unit and universal mounting bracket
• Maximum 123dB sound pressure level (SPL)
• Dimensions: 132mm width, 154mm length, 120mm height
• Confirms with IP55 standard
• The picture and the price refers to 17868 article number
• The product operates only with siren controller!

Gross price (including 27% VAT): 106.76€ (Net price: 84.06€)

• 58W (2 pcs together), 16Ω speaker
• Speaker with magneto-dynamic neodymium unit (without universal mounting bracket)
• Maximum 124dB sound pressure level (SPL)
• Dimensions: 150mm width, 157mm length, 150mm height (each piece)
• Confirms with IP55 standard
• The picture and the price refers to 17868 article number which consists of 2 pcs speaker
• The product operates only with siren controller!

Gross price (including 27% VAT): 667.00€ (Net price: 525.19€)

• 4500mAh NiMH battery
• For SE 1NDM AA siren and GDO R LED AA, GDO X LED AA magnetic beacon
• This item is essential for product operation
• Dimensions: 164mm length, 23mm height, 700g weight

Gross price (including 27% VAT): 264.80€ (Net price: 208.50€)

• Charger and docking base for RCM AA remote controller

Gross price (including 27% VAT): 95.15€ (Net price: 74.92€)

• Vehicle battery charger
• Resistant metal plate container with cigarette lighter plug (CRB SAC AA)
• Recharge socket with magnetic contacts (integrated in the container) for PBR battery kit
• For SE 1NDMAA siren and GDO R LED AA, GDO X LED AA magnetic beacon which use PBR battery

Gross price (including 27% VAT): 211.90€ (Net price: 166.85€)

• For SE 1NDMAA siren and GDO R LED AA, GDO X LED AA magnetic beacon
• Provides power supply when the battery is depleted
• The PBR battery is essential for product operation

Gross price (including 27% VAT): 42.25€ (Net price: 33.27€)

Introducing Aftershock, SoundOff Signal’s first low frequency siren system for emergency vehicles. Aftershock’s low frequency sound waves produce deep warning tones, proven highly effective intraffic clearing. Ideal for high traffic areas and busy intersections, Aftershock is available withone or two speakers to meet your specific needs. Universal brackets included.
The picture and the price refers to the ETSKLF100 article number


• Input voltage range: 10-16 Vdc
• Current Draw: 8 Amps - 100 Watts
• Output voltage: 58-64 Vpk - pk
• Dimension: 6 cm x 11,9 cm x 12,7 cm

Gross price (including 27% VAT): 899.22€ (Net price: 708.05€)

• 12V, 100W
• Dimensions: 151mm x 151mm x 40mm
• Ultra compact, low profile design
• High efficiency
• Easy to install
• Aluminium housing
• Accessory: CZ0170 Universal U bracket

Gross price (including 27% VAT): 430.77€ (Net price: 339.19€)

• Speaker power: 50W
• Sound pressure level: 112±3dB
• Dimensions: 113.5mm (diameter) x 71mm (depth)
• The ETSS050M speaker, with ABS horn and steel bracket, is specially designed for extreme weather conditions and outdoor installations
• Long life, high acoustic quality and wide coverage

Gross price (including 27% VAT): 164.49€ (Net price: 129.52€)

• High efficiency speaker capable of producing low frequency sounds
• Power: 100W
• Dimensions: 160 cm (height) x 160 cm (width) x 83 cm (depth)
• Compact, low profile design
• Neodymium magnetic drive for high efficiency
• Features a glass-lined nylon housing for a sturdy look and reduced overall weight
• Robust design and weatherproof
• Perfectly suited for many types of installations thanks to the bole mounting bracket

Gross price (including 27% VAT): 416.84€ (Net price: 328.22€)

• Power: 150W
• Dimensions: 19 cm (height) x 19 cm (width) x 8 cm (thickness)
• Impedance: 11 Ohm
• Aluminium speaker housing and strong plastic funnel for exceptional durability
• IP 56 dust and water resistance
• The VS-150W speaker is designed for use with the HSP-1 and HSP-2 sirens, however it also works with other sirens from other manufacturers

Gross price (including 27% VAT): 136.43€ (Net price: 107.43€)
11 products in total, page 1: 1 - 11 / 111

Emergency signal loudspeakers ensure a long service life for the user, as they are subjected to numerous tests by the manufacturers. These include, for example, dust and water resistance, low and high temperature resistance, salt resistance and vibration tolerance.

Minimum sound pressure required for emergency acoustic signals

A vehicle entitled to use an mergency light and audible warning device shall also be fitted with an audible warning device for the purpose of giving a distinctive audible warning, which shall give an audible warning at a variable pitch, measured at a distance of 7 m in front of the vehicle, with a sound pressure level of between 103 dB(A) and 120 dB(A) per audible tone. The detailed phonetic requirements and the conditions for testing and qualification of the audible warning device fitted to a motor vehicle shall be laid down in a standard.


Hungarian Standard 07-4009:1982 provides for the required sound pressure level of the audible warning device, in this case the blue police flashing light. According to the standard, the maximum sound pressure level to be measured should be 0,5-1,5 m from the ground. In the area opposite and at an angle of 45 degrees to the vehicle, the sound pressure level should be 103dB(A), and at 90 degrees from the vehicle, from the side, a minimum of 98dB(A) should be measured within a radius of seven metres. The maximum sound pressure level shall not exceed 120 dB(A). If these are not met, the vehicle shall not pass the sound pressure measurement.

Fixing of the loudspeaker

The siren loudspeaker may be mounted in the light-bridge or in the engine compartment driven by the siren control. Nowadays, LED light bridges are so narrow that a loudspeaker can no longer fit in them, and therefore the placement in the engine compartment of the vehicle has become the preferred option. From the user's point of view, there is a significant difference between placing the loudspeaker in the light bridge or in the engine compartment, as the driver is not so sure whether the siren is directly above him or in the soundproofed engine compartment. Self-contained speakers are available in different sizes and mountings to facilitate installation in the engine compartment. If required, it is also possible to install speakers with a power of 100W or 200W, which requires the use of an amplifier with the corresponding power.


IRM Decree 12/2007 (III.13) is responsible for the rules on the installation and use of warning and warning signal transmitters.