User manual YAMAHA QX1

[. . . ] You may need to limit the number of people around the placed stand, in order to avoid toppling the device or causing damage to the internal components. · If you use the TS-80 and TS-90 speaker stands manufactured by Ultimate Systems (sold separately) to support the C112V/C115V/CM10V/CM12V/CM15V speaker models, be sure to keep the following cautions. ­ Use the speaker stands with their legs fully opened. ­ Mount only one speaker on each speaker stand. [. . . ] Connecting an impedance load outside the amplifier's rated range can damage the amplifier. Handling caution · Always turn AC power to the power amplifier on last in any audio system to avoid speaker damage. When turning power off, the power amplifier should be turned off first for the same reason. · Do not use the device for a long period of time at a high or uncomfortable volume level, since this can cause permanent hearing loss. If you experience any hearing loss or ringing in the ears, consult a physician. · Do not operate the device if the sound is distorting. Prolonged use in this condition could cause overheating and result in fire. 2 This product, when used in combination with amplification and/or additional loudspeakers, may be capable of producing sound levels that could cause permanent hearing loss. DO NOT operate at high volume levels or at a level that is uncomfortable. If you experience any discomfort or ringing in the ears, or suspect an hearing loss, you should consult an audiologist. All full-range loudspeakers are fitted with a self-resetting poly switch that protects the high-frequency driver from damage caused by excessive power. If a loudspeaker cabinet loses high-frequency output, immediately remove power from the unit and wait for two to three minutes. They should allow the poly switch to reset. Reapply power and check the performance of the high-frequency driver before continuing with the power reduced to a level that does not cause the poly switch to interrupt the signal. Check your speaker impedance on page 7. 4 Subwoofers and the P-Series Power Amplifiers ENGLISH Adding subwoofers to speaker systems like the one shown in the diagram can provide superior dynamic range and overall sound quality. After inputting the line-level audio from the preamplifier or mixing console into the Yamaha P-series power amplifiers (P7000S/P5000S/P3500S/P2500S), the separate frequency bands are outputted from the amplifiers. MIXING CONSOLE TWO-CHANNEL GRAPHIC EQUALIZER P-SERIES POWER AMPLIFIERS A A LOW CUT FREQUENCY=90Hz B B SUBWOOFER SPEAKER SYSTEM PARALLEL SUBWOOFER A PARALLEL A LOW CUT FREQUENCY=90Hz SPEAKER SYSTEM B B SUBWOOFER P-SERIES POWER AMPLIFIERS SUBWOOFER 5 Suspended and Bracket Installation · Consult an installation expert to arrange for installation or construction work. · Choose suspension wire, an installation location, and mounting hardware that are strong enough to support the weight of the speaker. · Some fittings may deteriorate over extended periods of time due to wear or corrosion. For safety the installation should be checked thoroughly at regular intervals. Yamaha cannot be held responsible for damage or injury caused by insufficient strength of the support structure or improper installation. I Suspended Installation The C112VA and C115VA can be used in suspended "flying" rigs by using an appropriate suspension wire. Replace the bolts with the supplied eyebolts (3/8") as shown in the diagram, and then suspend the speaker using an appropriate wire. I Bracket Installation The C112VA has bracket-mounting screws on the top, bottom, and sides of the speaker enclosure. The C112VA can be mounted on a wall or ceiling using the optional brackets listed below. Bracket Wall bracket Ceiling bracket Baton bracket Model BWS251-300, BWS251-400 BCS251 BBS251 Screws (W5/16") Bolts Bolts Eyebolts Eyebolts · Use only the supplied eyebolts. · Use two or more eyebolts for suspended installation. · Do not suspend a speaker from another suspended speaker. 2. The speaker angle can be adjusted for optimum coverage by adjusting the lengths of the suspension wires, but the downward tilt angle must be less than 45 degrees, as shown in the diagram. · Use only the specified screws (W5/16") to attach the bracket to the speaker. The mounting screws are installed on the speaker when it leaves the factory. [. . . ] Combo Division Viale Italia 88, 20020 Lainate (Milano), Italy Tel: 02-935-771 MALAYSIA Yamaha Music Malaysia, Sdn. , Bhd. Lot 8, Jalan Perbandaran, 47301 Kelana Jaya, Petaling Jaya, Selangor, Malaysia Tel: 3-78030900 BRAZIL Yamaha Musical do Brasil Ltda. Rua Joaquim Floriano, 913 - 4' andar, Itaim Bibi, CEP 04534-013 Sao Paulo, SP. BRAZIL Tel: 011-3704-1377 SPAIN/PORTUGAL Yamaha Música Ibérica, S. A. [. . . ]