The DSP 25EEx was the first plastic loudspeaker to be certified for hazardous areas by DNH A/S in the 1980s and has enjoyed nearly 30 years of excellent service in both offshore and onshore environments.

Manufactured from carbon-loaded black anti-static polyamide, this UV stable enclosure is non-corroding and lighter than similar materials such as glass fibre reinforced polyester (GRP).

This loudspeaker has a maximum power consumption of 25 watts, which will produce a peak sound pressure level of 117dB/1m for the gas group IIB+H2 version. A gas group IIC version is also available if required.

The loudspeaker is available with a multi-tapping line voltage transformer (typically 100V) or in a low impedance (typically 8 ohm) version.

Termination is within an Ex ‘e’ termination chamber, via M20 gland entries, which can accept any certified Ex ‘e ‘or Ex ‘d’ cable glands according to local requirements.

This loudspeaker is certified to the latest EN 60079 standards and is also IECEX approved, as well holding CNEX (Chinese) and GOST (Russian) certificates.

ID stainless steel plate attached to the DSP-25EExmNT loudspeaker

Spec Sheet
IEC Compliance     

Mining and Industrial Sectors

Morrison's PA is a leading supplier of professional audio equipment for industrial control and communication system. We understand that mining and industrial settings are high risk zones where clear and reliable communication is imperative. We have spent years in research and development of good quality, safe and reliable sound equipment for mining and industrial scenarios. Our robust sound equipment can be used in all such industrial settings that call for rugged and reliable communications system. We cater to the mining industry, onshore and offshore oil and natural gas complexes, power generation plants, chemical plants, tankers, steel mills, paper mills, cargo carriers, and supply boats. Our sound equipment and PA systems can operate in the harshest environments and are not just long lasting but also flexible to allow a variety of expansion settings and applications.

The basics on explosion proof protection

As one of the world’s leading manufacturers of loudspeakers for hazardous areas (IEC, EEx, ATEX, NAMKO, GOST, UL, FM), DNH possess a vast knowledge of explosion-proof technology and gas protection.   Click to view the basic information on explosion proof protection

For more options on D.I.Y. PA instalations

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Suitable for:  • Schools • Conferences • Function Hire • Sporting Events • Outdoor Use • Places of Worship • Wedding Celebrants

This ia a powerful portable wireless PA system with CD/MP3 player with thumb drive options. The Challenger PA speaker system consists of a 10” full range speaker with a high frequency tweeter, power supply is made up of a switch mode 100-240V AC power supply and two heavy duty rechargeable batteries.

Features & accessories:

• CD / MP3 player option with USB drive
• Slots for 4 wireless microphone receiver modules.
• 120 watt RMS 10” full range with high frequency driver speaker
• Neutrik combo XLR/Jack Mic In, Line In (RCA), Line Out (RCA)
• Phantom power on microphone one input
  
• 2 x 12v, 4.5AH rechargeable batteries
• Dimensions (H x D x W) 500 x 350 x 300mm Weight 21kg
• Retractable handle and trolley wheels

CD/MP3/USB information

You can download your audio presentations onto a USB storage drive device and plug it directly into the Challenger Portable PA system and use the remote controllable.

Wireless mic options to choose from:

Hand-held Wireless Mic: The hand-held wireless microphone is basically the industry standard all-rounder. It sounds great when used properly and is quite convenient to pass around from one person to another.  However, do not position it under the chin or away from the mouth – that will diminish the clarity of the audio output.

Head-Set Wireless Mic: You can bank upon your headset microphone for speech continuity. No matter where you turn your head, the mic will follow, keeping the volume constant. However, the only downside to this is it will not be easy to pass the headset microphone around in a gathering.

Lapel Wireless mic: It is not advisable to use a lapel mic if you’re after good intelligibility and amplification. The lapel can cause fluctuations in audio output – loud sound when you look down, soft when you look up and sound drop-offs if you look away! However, lapel mics are best if you are after sound reinforcement. They are not for sound amplification and can be responsible for lots of feedback problems in portable pa systems.