[. . . ] ENGLISH · Thank you for purchasing the YAMAHA EQ-1100/U graphic equalizer. To ensure proper operation for the best possible performance, please read this manual carefully. Also avoid locations subject to vibration and excessive dust, heat, cold or moisture. Do not install the unit on other component and do not place the television set or color monitor on the unit. [. . . ] To record the equalized sound, press the EQ button then, the EQ REC button so that the EQ REC indicator lights. 11. Input select buttons Press one of these buttons to select the source to be listened to. SOURCE: To play the source connected to the amplifier, or to record onto cassette deck 1 or 2. TAPE1: To play cassette deck 1 connected to the equalizer, or to dub the sound to cassette deck 2. TAPE2: To play cassette deck 2 connected to the equalizer, or to dub the sound to cassette deck 1. SUBSONIC FILTER button and control Used to cut off unnecessary low frequency. If the program source to be played contains such super low sound, press the SUBSONIC FILTER button to turn the subsonic filter ON. Channel buttons These are used to select the channel(s) subject to the equalizer level control or spectrum display. LEFT: To display the equalizer levels or spectrum of the left channel only. RIGHT: To display the equalizer levels or spectrum of the right channel only. L + R: To display the equalizer levels or spectrum of both the left and right channels. With the equalizer level display, the left channel levels are displayed more brightly than the right channel levels. With the spectrum display, the sum of the left and right spectra is displayed. This button functions only when the supplied microphone is connected to the MIC jack. 16. PINK NOISE button Pink noise, which is emitted by a built-in generator, is a random noise signal which is distributed at an even level at all frequencies, and when monitored through the supplied microphone, allows you to measure the acoustic response characteristics of the listening environment. To emit pink noise, set this button to ON and press the channel button to select the channel to which pink noise is applied. SUB (subsonic filter) indicator Lights when the SUBSONIC FILTER button is ON. The indicator flashes when the AUTO ROOM EQ button is ON, to indicate the auto equalization operation. EQ/EQ REC indicators Light respectively when the EQ and EQ REC buttons are ON. However, when the EQ button is pressed OFF while the EQ and EQ REC buttons have been ON, the EQ REC indicator also goes off. MIC jack Connect the supplied microphone to this jack to measure acoustic characteristics of the listening room or to perform auto equalization. REMOTE CONTROL sensor The signal from the provided remote control transmitter is received through this window. REMOTE CONTROL TRANSMITTER (See Fig. [. . . ] If the last memory and preset memories have been cleared after the power has been off for more than 2 weeks, it is necessary to store preset memories again. HOW TO SUPERIMPOSE EQUALIZER CURVES The curve stored in the ROOM EQ memory button, which was obtained by auto equalization, can be superimposed with another curve which has been stored in one of preset memory buttons 1 to 7. While "P" is flashing, press one of preset memory buttons 1 to 7 that is to be superimposed. HOW TO DUB TAPE 1. When dubbing equalized sound, press the EQ and EQ REC buttons, and set the equalizer levels as desired. According to the dubbing mode selected, set one of the cassette decks to play mode and the other to record mode. HOW TO STORE EQUALIZER CURVES IN MEMORY 1. [. . . ]