User manual ROLAND RSM-90 MANUAL 2

[. . . ] to damage or caused with and all its to domestic The symbol alerts the user to important instructions or warnings. The specific meaning of the symbol is determined by the design contained within the triangle. In the case of the symbol at left, it is used for general cautions, warnings, or alerts to danger. The symbol alerts the user to items that must never be carried out (are forbidden). The specific thing that must not be done is indicated by the design contained within the circle. [. . . ] Before connecting the speakers, confirm that the power is off on all connected devices. Also check to make sure that the power amp and mixer volume levels are turned down completely. Cautions · Make sure to match the polarity (+, -) of the connectors. · Avoid causing shorts when connecting the speaker cables. Also take care not to connect the cables incorrectly. Failure to follow these precautions may result in damage to your equipment. · The screws and short bar on the input connectors are made to be removable. When you do remove these, be sure to store them in a secure place out of the reach of small children. Consult a physician or get other appropriate medical help immediately if any of these pieces is swallowed accidentally. · With high-output power amps (100 W or above), touching the amp's input connectors may cause electric shock. Take care not to come into contact with the input connectors. · These speakers have a rated impedance of 4 ohms. Confirm that the recommended load impedance of the power amp you are using is compatible. · Do not connect any power amp with output higher than the maximum allowable input for these speakers. Failure to follow this precaution may result in damage to the equipment. · Don't touch the diaphragm of the HF driver or the cone of the LF driver. Connections on the Speakers Use the short bar on each speaker to bridge the speaker's high- and low-frequency "+" connectors (or "-" connectors), then connect the speakers to the power amp with speaker cable. fig. 1 HF­ HF+ Short Bar LF­ ­ + LF+ HF: HIGH FREQUENCY LF : LOW FREQUENCY Power Amplifier 4 Making the Connections Bi-Wiring Connections Remove the short bar horizontally, then connect the power amp to each speaker using two sets of cables. fig. 2 HF­ HF+ LF­ ­ + LF+ HF:HIGH FREQUENCY LF :LOW FREQUENCY Power Amplifier Bi-wiring is a method of connecting the power amp to the speakers using separate sets of speaker cables for the low- and high-frequency portions. Using separate cables for the low- and high-frequencies reduces intermodulation distortion, thus improving the high-end sonic quality. fig. 3 High Frequency Power Amplifier Network HF + ­ Network Low Frequency LF Tips for High Quality Playback - Think carefully beforehand to determine the optimum location for the speakers. To fully realize the speakers' excellent low-end reproduction capabilities, place the speakers on stands that will provide firm, stable support. - Use bi-wiring connections to bring out the speakers' superior high-end response. - To help ensure great sound, use high-quality, heavy-gauge speaker cables. 5 Appendices Specification System 2 Way Monitor Speaker Nominal Impedance 4 ohms Enclosure Bass-reflex type Sensitivity(1W/1m) 88 dB Cabinet 3/4"MDF, Baffle:1"MDF Crossover Frequency 2. 6 kHz LF Driver 160 mm(6-1/2") Foamed polypropylene cone type, magnetically shielded Crossover Network Advanced second order filter Connectors Binding posts x 4 (LF input, HF input) HF Driver 25 mm(1") Soft dome type, magnetically shielded Dimensions 228. 6(W) x 322. 3(D) x 371. 5(H) mm 9(W) x 12-11/16(D) x 14-5/8(H) inches Power Handling rated: 90 W *1 max: 270 W *1 EIA RS426A Weight 11 kg/24 lbs. , Ltd. 330 Verng NakornKasem, Soi 2, Bangkok 10100, THAILAND TEL: (02) 2248821 REUNION Maison FO - YAM Marcel 25 Rue Jules Merman, ZL Chaudron - BP79 97491 Ste Clotilde REUNION TEL: 28 29 16 LEBANON A. Chahine Building, Achrafieh Beirut, LEBANON TEL: (01) 335799 VIETNAM Saigon Music 138 Tran Quang Khai St. , District 1 Ho Chi Minh City VIETNAM TEL: (08) 844-4068 PERU VIDEO Broadcast S. A. Portinari 199 (ESQ. PL-03664 Warszawa POLAND TEL: (022) 679 44 19 SOUTH AFRICA That Other Music Shop (PTY) Ltd. 11 Melle Street (Cnr Melle and Juta Street) Braamfontein, 2001, Republic of SOUTH AFRICA TEL: (011) 403 4105 PORTUGAL Tecnologias Musica e Audio, Roland Portugal, S. A. RUA DE SANTA CARARINA 131/133, 4000-450 PORTO PORTUGAL TEL: (022) 208 4456 QATAR Badie Studio & Stores P. O. [. . . ] Box 20077 State of BAHRAIN TEL: 211 005 GREECE STOLLAS S. A. Music Sound Light 155, New National Road 26422 Patras, GREECE TEL: 061-435400 PHILIPPINES G. A. Puyat Avenue Makati, Metro Manila 1200, PHILIPPINES TEL: (02) 899 9801 MEXICO Casa Veerkamp, s. a. MEXICO TEL: (525) 668 04 80 HUNGARY Intermusica Ltd. Warehouse Area `DEPO' Pf. 83 H-2046 Torokbalint, HUNGARY TEL: (23) 511011 CYPRUS Radex Sound Equipment Ltd. 17 Diagorou St. , P. O. [. . . ]