Yamaha SRT-1000 Owners Manual - Page 23

When surround effect is not enough The unit achieves its surround sound effects by projecting sound beams which reflect off walls. The sound beams are not reflected toward to the listening position caused by furniture, etc., in the path of sound beams, or the room shape. In this case, the sound may become unbalanced. How to install YRB-100 The unit outputs sound beams according to the "SRT position" settings (p.9) as shown in the following illustrations. Install the YRB-100 in the path of the sound beam. shows the recommended install position. FL: Front left FR: Front right SL: Surround left SR: Surround right Figure 1. Ideal condition Sound beams are reflected correctly and surround sound effects are balanced. Figure 2. Surround (right) beam is not being reflected because there is no wall. Surround (right) is quieter than surround (left), or surround (right) is in front of its proper location. If the sound beams are not reflected toward to the listening position (figure 2), you can adjust for this by installing the optional sound reflection board (YRB-100). SRT position: Center YRB-100 Figure 3. With a sound reflection board installed The sound beam for surround (right) is reflected correctly, and correct surround sound effect is achieved. NOTE • YRB-100 may not be available depending on the country or region. SRT position: Left SRT position: Right • After installing the sound reflection board, refer to the YRB-100 owner's manual to adjust the height and angle. It is recommended to use the test-tone (by holding down the CH LEVEL key) when adjusting the board (p.11). • By installing the board close to your listening position, you can achieve clear surround sound positioning. NOTE This unit does not have the function to automatically adjust sound beam angles. It is not necessary to adjust the sound beam angles, although the procedure is described in the owner's manual. En 21