B-640

B-640(T) N-3770 Kragerø NORWAY Phone: ........ (47) 35 98 56 00 Fax: ............ (47) 35 98 56 10 E-mail: .............. dnh@dnh.no Web-site: ........ www.dnh.no DNH WW Ltd. Phone: ......................................................(44) 1908 275 000 England Fax: ..........................................................(44) 1908 275 100 DNH GmbH Germany Phone: .....................................................(49) 040 6569 30-0 Fax: .......................................................(49) 040 6569 30-30 E-mail: .............................................................. dnh@dnh.de E-mail: .......................................................... dnh@dnh.co.uk ISO 9001 CERTIFIED Transformer: Combined 50 / 100 Volt line 5(White) : 6(Green) 50V 5(White) : 8(Red) 100V Secondary nominal tappings: 1:4 6,0W 1:3 3,0W 2:4 2,0W 1:2 1,5W 3:4 0,9 W 2:3 0,5 W Rec. ceiling hole: ø 215 mm 1W/1m Pink Noise 1/3 octave bands Material / Colour................................Aluminium / RAL9010 Mounting ..................................................... 4 metal strips Termination .................................................Spring clamps Weight ................................................................... 1,2 kg IP-rating .......................................................................... Max. / min. amb. temp ...................................90°C / -20°C Standard version ............................. 50 / 100 V transformer Rated / max. power ......................................... 6 W / 20 W SPL 1W/1m..............................................................90 dB SPL rated power.......................................................97 dB Effective freq. range .................................... 60 – 20000 Hz Dispersion (-6dB) 1kHz / 4kHz ............................ 140° / 50° Directivity factor, Q........................................................... Installation, Operation and Maintenance Procedures When mounting the loudspeaker please ensure that it is re-assembled in the same manner in which it was received. Install outer ring into the hole by bending down 4 metal strips. Use nail / screw to prevent the ring from turning. Connect cable to terminal. Screw the loudspeaker grill clockwise into fixed position. For optimum performance, always use the correct voltage / power and operate within the frequency limits as stated. Take care when loudspeaker is energized (100 V). This loudspeaker is supplied with a 2 year warranty against defective workmanship. Most of our products are available in different colours, impedances and power ratings. DNH reserves the right to alter specifications without notice. \\Ntserver2\DataArk_2000\Kabinett\B-6xx\B640T.doc Rev. 26.01.2000