covered in a dark grey rubber textured laminate. The cabinet shall have a large folded vent port tuned to extend the response of the low-frequency driver, using Thiele-Small parameter calculations adjusted for the effects of turbulence in the port during high-power operation. The cabinet shall measure 15" wide, 9.25" high, and 8.5" deep, and weigh 15 pounds (Metric specification: 38.1 cm x 23.5 cm x 21.6 cm, 6.8 kilograms).

Each assembly shall exhibit a frequency response from 45 Hz to 18 kHz, plus or minus 3 dB. Its impedance shall be 4 ohms, and be capable of handling 120 watts program material or 200 watts peak input using the EIA-426A testing method. It shall generate an 88 dB sound pressure level, measured at 1 meter with a 1 watt power input.

The loudspeakers shall be the Monitor One Studio Reference Monitors from Alesis Corporation.

3.1MAINTENANCE/REPAIR INFORMATION

3.1A Cleaning

The cabinet surfaces of the Monitor One are covered with a textured rubber laminate. Clean these surfaces when necessary with a lint-free cloth dampened in warm soapy water. To preserve the textured finish, don't rub hard on the surface. Do not attempt to clean the cabinet with a brush (which may damage the surface) or a sponge (which may leave small crumbs in the texture).

Do not attempt to clean either of the drivers.

The Monitor Ones require no periodic maintenance.

3.1B Service

Before sending the Monitor Ones in for repair, make sure they are faulty and that the problem isn't being caused by something else in the system. Distortion or noise may be caused by a defective amplifier, preamp, cable, equalizer etc., or a loose connection in the system. Connect the Monitor Ones to a system that is known to be working properly to check whether the monitors have malfunctioned.

Should service become necessary, YOU MUST FIRST CONTACT ALESIS TO OBTAIN A RETURN AUTHORIZATION NUMBER BEFORE RETURNING THE UNIT TO ALESIS OR AN AUTHORIZED ALESIS SERVICE FACILITY. If the unit is to be

11

Page 13
Image 13
Alesis Monitor One manual MAINTENANCE/REPAIR Information, 1A Cleaning