User manual ELECTRO-VOICE DML-2181A

[. . . ] Safety concerns limit the use of a pole greater than 18 inches in length (under no circumstances should a pole of greater than 18 inches be used with the Eliminator iTM Sub). The DL18BFH woofer will provide average power handling ratings of 400 watts EIA and peak power ratings of 800 to 1000 watts. Vented enclosures offer excellent power handling and low distortion in the lowest octave of rated operation. However, it is always advisable to filter material below enclosure tuning to further improve system output and headroom. [. . . ] The Eliminator iTM should be high-pass filtered to reduce subsonic material below 40 Hz. output of a white-noise generator (white noise is a particular type of random noise with equal energy per bandwidth in Hz) is fed to a shaping filter with 6-dB-per-octave slopes below 40 Hz and above 318 Hz. When measured with the usual constant-percentage bandwidth analyzer (one-third-octave), this shaping filter produces a spectrum whose 3-dB-down points are at 100 Hz and 1, 200 Hz with a 3-dB-per-octave slope above 1, 200 Hz. Architects' and Engineers' Specifications The loudspeaker system shall be a subwoofer system consisting of one 45. 7-cm (18-in. ) low-frequency transducer in a vented quasi band pass design. The system shall be capable of either biamp operation or full-range passive (when used with the Eliminator iTM stage system or other appropriate full-range system). The system shall have a rated frequency response of 40 Hz to 100 Hz (passive mode) and is capable of extended high-level operation within that range. Power handling (long-term average) shall be 400 watts when EIA RS-426-A 1980 is employed as a test method or 500 watts when AES 1984 is used at the test method. The system sensitivity shall be 98 dB (101 dB with 1/2 space load-common orientation) with a 1 watt input at a distance of 1 meter. The nominal impedance shall be 8 ohms and shall produce a combined impedance of 4 ohms when used with the Eliminator i TM , full-range system. The system dimensions shall be 85. 4 cm (33 5/8 in. ) high by 42. 9 cm wide (16. 9 in. ) and 60. 9 cm (24 in. ) deep and have a net weight of 87 lb. Power handling To our knowledge, Electro-Voice was the first U. S. 40-100 Hz, ±3 dB Long-Term Average Power Handling, EIA RS-426A: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 watts AES (1984): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 watts Sound Pressure Level, 1 W/1 m: Full space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 dB Half space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Acoustic/electronic filter output Transducer Complement: . . . . . . . . . . . . . . . . . . . . . . . . . 1 ea DL18BFH Impedance, Nominal: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ohms Minimum: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5. 1 ohms When used with Eliminator iTM in satellite configuration nominal 4 ohms, minimum 3. 2 ohms. USA Canada Germany France Australia Hong Kong Japan Singapore Mexico UK Africa, Mid-East Latin America Enclosure Tuning: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black carpeted MDF Dimensions: Height: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 5. 1 ohms When used with Eliminator iTM in satellite configuration nominal 4 ohms, minimum 3. 2 ohms. USA Canada Germany France Australia Hong Kong Japan Singapore Mexico UK Africa, Mid-East Latin America Enclosure Tuning: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black carpeted MDF Dimensions: Height: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85. 9 cm (33. 8 in) Width: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43. 8 cm (17. 25 in. ) Depth: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]