57Radio Operation Speaker setupSurround Sound Audio ComponentsSpeaker Setup for enjoying the surround sound effectDTS Digital Surround, Dolby Digital and Dolby Pro Logic technologies can be used to enjoy 3-dimensional sound effects withvideo image. We recommend you use the following devices.• Hi-Fi Stereo VCR to play the program sources.• Large screen TV monitor for a high-quality video image.• Use the program sources (e.g. LD, DVD, VIDEO TAPE etc.) labeled with DTS Digital Surround (or) Dolby Digital Surround( or ) Dolby Pro Logic Surround.Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic”, and the double-D symbol are trademarks ofDolby Laboratories. Confidential Unpublished works. Copyright 1992- 1997 Dolby Laboratories. All rights reserved.Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other worldwide patents issuedand pending. “DTS” and “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc. Copyright 1996 DigitalTheater Systems, Inc. All rights reserved.Room features affecting soundIf the room is made of concrete and hard materials like wood walls, you will not hear the ultimate surround effects. The wallsof the room must have the appropriate absorption factor and be able to "reflect" the sound for the proper effect. If the roomhas too much sound reflection, try repositioning the furniture. You may also need to hang curtains etc. to absorb more of thesound - experiment with the room’s acoustics.