User manual YAMAHA AV-50

[. . . ] 8 Do not install near heat sources such as radiators, heat registers, stoves, or other heat-producing apparatus (including amplifiers). 9 Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades, one wider than the other. A grounding type plug has two blades and a third grounding prong. [. . . ] In this case, move the unit away from the turntable. This unit may be damaged if certain sounds are continuously output at high volume level. For example, if 20Hz­50Hz sine waves from a test disc or bass sounds from an electronic instrument, etc. are continuously output, or if a turntable stylus touches the surface of a disc, reduce the volume level to prevent the unit from being damaged. If you hear distorted noise (i. e. , unnatural, intermittent "rapping" or "hammering" sounds) from this unit, reduce the volume level. Extremely loud movie soundtrack low frequency, bass-heavy sounds, or similarly loud popular music passages can damage the speaker system. Vibration generated by super-bass frequencies may distort images on a TV. In this case, move the unit away from the TV set. When disconnecting the power cord from the wall outlet, grasp the plug; do not pull the cord. When you plan not to use this unit for a long period of time (i. e. , vacation, etc. ) disconnect the AC power plug from the wall outlet. Do not place much pressure against the subwoofer net. A B Fastener Peel off the seal. : Subwoofer : Front speaker Big screen Cautions: · Do not place the center speaker on a TV that has a top surface area smaller than the speaker bottom. Otherwise, the speaker may fall and cause injury. · Do not place the center speaker on a TV that has a slanted or inclined top. · Do not touch the adhesive surface of a fastener after you peel off the seal, as this will weaken the adhesive strength of the fastener. · Thoroughly wipe to clean the surface where the fastener is to be applied. Note that adhesive strength will be weakened if the surface is dirty, oily or wet. Weakened adhesive may cause the center speaker to fall. Non-skid pads: Place the included non-skid pads at the four corners of the bottom of the subwoofer to prevent the subwoofer from sliding due to vibration or minor impact. 4 Mounting the front and surround speakers You can place the front and surround speakers (and surround back speaker in an NS-P246 system) on a shelf or rack, set them on the floor, or mount them on a wall or speaker stand. To attach to a bracket: 1. Attach a bracket (part number AAX34790) to the bottom of the speaker using a screw (part number AAX12390) such that the convex part of the bracket fits over the groove in the bottom of the speaker, as shown below. 2. Mount the speaker on the speaker stand by affixing a pair of screws through the outside bracket holes. Mounting bracket (AAX34790) To mount the speakers on a wall: 1. Affix screws to a firm wall or wall support as shown below. (Use tapping screws 3. 5 to 4mm in diameter. ) Wall/ wall support 70 mm Holes 70 mm 10 mm Minimum 20 mm Insert only M4 screws through the outside holes. Screw (AAX12390) 2. [. . . ] Sound level is too low. Cause Speaker cables are not connected securely. Speaker cables are not connected correctly. What to Do Connect the speaker cables securely. Connect the speaker cables correctly: L (left) to L, R (right) to R, "+" to "+" and "­" to "­". For the Subwoofer (SW-P240) only Problem Power is not supplied even though the POWER switch is set to the ON position. No sound. Cause The power plug is not securely connected. [. . . ]