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 clean room environments such as photography laboratories, pharmaceutical industry, or electronics workshops.
DNH BK-560 is a 5 inch, 6 watt, spring clamped ceiling speaker that has been specifically designed for clean room application such as pharmaceutical facilities, micro-electronics workshops, or photographic laboratories. The loudspeaker has frequency response of 70Hz to 12,000Hz, and an SPL of 95dB at 6W/1m. BK-560CRT has a transformer that allows 70/100V line operation, with taps at 6/3/1.5/0.5w.
Material: Aluminium. Colour: White, RAL 9010. Rated power: 6W. Maximum power: 10W. SPL: 88dB, 1W/1m; 95dB, rated power/1m. Dispersion: 150/70 degrees. Frequency range: 70Hz - 12kHz. Ceiling cut-out diameter: 141-147mm. Weight: 0.9kg, with transformer. Dimensions (Diam. x D): 165 x 110mm.
BKF-560CR shares the feature set of BK-560CR, however it comes complete with plastic dust box.
Material: Aluminium. Colour: White, RAL 9010. Rated power: 6W. SPL: 88dB, 1W/1m; 95dB, rated power/1m. Dispersion: 170/60 degrees. Frequency range: 150Hz - 11kHz. Ceiling cut-out diameter: 141-147mm. Weight: 0.74kg, with transformer. Dimensions (Diam. x D): 165 x 115mm.
DNH BP-560CR is a 5 inch, 6 watt, fast fitting, flush mounting, clean-room, ceiling loudspeaker with a maximum sound pressure level of 95dB(A), suitable for installations such as research facilities, pharmaceutical manufacture and food preparation. This loudspeaker is fitted with a non-shedding cone suitable for use in clean room environments. With a frequency response of 70Hz to 12kHz and a dispersion angle of 150 degrees at 1kHz, this loudspeaker features cable termination by spring-loaded fast connect terminals. BP-560CR and BP-560CRT can mount directly into a false/suspended ceiling. A multi-tap transformer is fitted to the line voltage models that allows adjustment of sound output.
Material: PA-6 plastic/ABS plastic. Colour: White, RAL 9010. IP rating: 31. Rated power: 6W. SPL: 88dB, 1W/1m; 95dB, rated power/1m. Dispersion: 150 degrees. Frequency range: 70Hz - 12kHz. Ceiling cut-out diameter: 160-165mm. Weight: 0.73kg, with transformer. Dimensions (Diam. x D): 190 x 120mm.
DNH BPF-560CR shares the features of BP-560CR however it comes complete with a plastic dust box.
Material: PA-6 plastic/ABS plastic. Colour: White, RAL 9010. IP rating: 31. Rated power: 6W. Maximum power: 10W. SPL: 88dB, 1W/1m; 95dB, rated power/1m. Dispersion: 170 degrees. Frequency range: 150Hz - 11kHz. Ceiling cut-out diameter: 160-165mm. Weight: 0.8kg, with transformer. Dimensions (Diam. x D): 190 x 120mm.
DNH CAP-15WCR is a 15 watt, IP55 weatherproof, projector speaker manufactured from aluminium and designed for clean room application. An M20 cable gland allows entry to the cable termination, which is via screw terminal. Mounting is by way of integrated foot bracket with 7mm diameter fixing holes. CAP-15WCRT has the same specifications however has 70/100V line taps of 2W, 4W, 7.5W, and 15W.
Material: Aluminium. Colour: White, RAL 9010. Rated power: 15W. SPL: 85dB, 1W/1m; 96dB, rated power/1m. Frequency range: 125Hz - 12kHz. Dispersion: 115/80-degree.. Weight: 2.4kg, with transformer. Dimensions (HxWxD): 146 x 154 x 200mm.