Based in Norway, DNH have been designing and manufacturing loudspeakers for industrial and commercial application since 1946. Below is a selection of loudspeakers suitable for application where explosion protection is of benefit.
BA-56EExeNT Ceiling, 6W, IP54, Explosion protected
This IP54 rated Ex ceiling speaker has extensive certification, including IECEx, ATEX, INMETRO, US/CAN, CC Ex, KOSHA, Bureau Veritas, ECAS, and EQM - qualifying it for use in nearly all corners of the world. The product is made from aluminium and has multiple options for transformers and tappings including 0.3W/0.5W/1W/1.5W/3W/6W so that the sound pressure level can be adjusted to an appropriate level. Termination is by way of E-chamber and push terminal. Three holes allow for screw fixing.
Material: Anodized aluminium. Minimum/maximum ambient temperature: -20/+50-degrees Celsius. Rated power: 6W. SPL: 88dB, 1W/1m; 95dB, rated power. Frequency range: 160-15,000Hz. Dispersion: 113 degrees, 1kHz; 25 degrees 4kHz, -6dB. IP rating: IP54. Weight: 3.0kg.
CAREEX-6, CAREEX-6T Projector, 6W, IP54, Explosion proof
An extensively certified, IP54 rated, bi-directional speaker manufactured from aluminium and designed for use in cabins and hallways, etc. within hazardous areas. This variation is delivered with a wall mounting base. CAREEX-6 is available in 8ohm or 20ohm version, whilst CAREEX-6T offers 100V tappings of 0.3W/0.5W/1W/1.5W/3W/6W. Note: DNH recommend fastening the lid screws with a torque of 2-2.2Nm to assure the IP54 rating.
Material: Aluminium. Rated power: 6W. SPL: 90dB, 1W/1m; 97dB, rated power. Frequency range: 160Hz – 16kHz. Weight: 3.6kg. Dimensions (HxWxD): 178 x 171 x 145mm.
DSP-15EExmN, DSP-15EExmNT Horn, 8W/25W, IP66/IP67, Zone 1 explosion protected
DNH DSP-15EExmN is manufactured from anti-static polyamide and has been designed to be explosion proof. The horn has a rated power output of 25W and a maximum sound pressure level of 106dB at 1W/1m. A U shape bracket with three 7mm diameter fixing holes is provided. DSP-15EExmNT offers 100V line input and is available in 25W or 8W version.
Material: Anti-static polyamide. Colour: Black. IP rating: 66/67. Rated power: 25W. Maximum power: 30W. SPL: 106dB, 1W/1m; 118dB, rated power/1m. Frequency range: 100Hz – 11kHz. Dispersion: 120/37-degree. Weight: 2.2kg. Dimensions (HxWxD): 144 x 170 x 207mm.
DSP-15EExmNL, DSP-15EExmNLT Horn, 25W, IP66/IP67, Zone 1 explosion protected
DSP-15EExmNL has the same explosion proof attributes as DSP-15EExmN, however it has a longer flare (denoted by the ‘L’). DSP-15EExmNLT has a transformer and therefore is able to operate at 100V.
Material: Anti-static polyamide. Colour: Black. IP rating: 66/67. Rated power: 25W. Maximum power: 30W. SPL: 109dB, 1W/1m; 122dB, rated power/1m. Frequency range: 380Hz – 7kHz. Dispersion: 100/30-degree. Weight: 2.8kg. Dimensions (HxWxD): 200 x 275 x 348mm.
DSP-25EExmN, DSP-25EExmNT Horn, 25W, IP66/IP67, Zone 1 explosion protected
Like DSP-15EExmN, DNH DSP-25EExmN is manufactured from anti-static polyamide and has been designed to be explosion proof. The horn has a rated power output of 25W and a maximum sound pressure level of 108dB at 1W/1m. A U shape bracket with two 7mm diameter fixing holes and a single 10mm diameter fixing hole are provided. DSP-25EExmNT offers 100V line input.
Material: Anti-static polyamide. Colour: Black. IP rating: 66/67. Rated power: 25W. Maximum power: 25W. SPL: 108dB, 1W/1m; 120dB, rated power/1m. Frequency range: 370Hz – 7.5kHz. Dispersion: 98/29-degree. Weight: 4kg. Dimensions (HxWxD): 200 x 275 x 348mm.
DNH HP-20EExIIN is manufactured from anti-static polyamide and has been designed to be explosion proof for zone 2 application. The horn has a rated power output of 20W and a maximum sound pressure level of 110dB at 1W/1m. A U shape bracket with 7mm and 10.5mm diameter fixing hole. HP-20EExIINT offers 100V line input.
Material: Anti-static polyamide. Colour: Black. IP rating: 67. Rated power: 20W. Maximum power: 20W. SPL: 110dB, 1W/1m; 122dB, rated power/1m. Frequency range: 310Hz – 8kHz. Dispersion: 115/25-degree. Weight: 2kg. Dimensions (HxWxD): 237 x 237 x 286mm, excluding bracket.
This Ex aluminium horn loudspeaker is certified for use in Zone 2 areas. The product is anodized and powder coated for excellent corrosion resistance. HS-15EExIIN is available in 8ohm and 20ohm options, whilst HS-15EExIINT 100V line version has tappings of 1W/1.5W/3W/4W/7.5W/15W. All versions include a U-style bracket for fixing to wall or ceiling surface.
Material: Aluminium alloy. Colour: Grey, RAL 7035. Rated power: 15W. SPL: 107dB, 1W/1m; 118dB, rated power/1m. Frequency range: 350Hz – 7.5kHz. Dispersion: 140/30-degree, 1kHz/4kHz. Weight: 2.7kg. Dimensions (Diam. x D): 163 x 247mm, excluding bracket.
HS-15EExmNMF, HS-15EExnNMFT Horn, 15W, IP67, Zone 2 explosion protected
A 15W, IP67 rated, maintenance free Ex aluminium horn loudspeaker. The product is anodized and powder coated, for corrosion resistance. The unit is supplied with a permanently encapsulated cable. HS-15EExmNMF is available in 8ohm or 20ohm version, whilst the HS-15EExnNMFT 100V line version offers taps of 0.3W/0.5W/1W/1.5W/3W/6W.
Material: Aluminium. Colour: Grey, RAL 7035. Rated power: 15W. SPL: 105dB, 1W/1m; 116dB, rated power/1m. Frequency range: 410Hz – 7kHz. Dispersion: 140/40-degree, 1kHz/4kHz. Weight: 3.1kg. Dimensions (Diam. x D): 163 x 247mm.