AUDIO VISION
Electrical Component in Vredenburg

Within the power limitations of your amplifier, the safe volume level depends on the length of lime that the speakers play at a given level. You also will notice that some records or CD's are recorded at a higher level than others. Your speakers are intended to deliver clean, accurate reproduction at normal listening levels. To listen to the speakers while you are outside, the system would have to be very loud and would likely be left that way for a long time. Rather get a pair of speakers that can play music outside when you are there. If the system is distorted you are way past its limit and should immediately reduce the volume level. The better an amplifier's control over a loudspeaker, the more precise the speaker will play the signal, just as it is supposed to be. Therefore an amplifier that has high levels of dynamic headroom (short term power) ensures that even when driven to deliver high volume levels, it still has the capacity to deliver clean peaks. The more capable an amplifier is to drive such difficult loads, the better. Home theatre, or surround sound (home cinema) as it is also known, has its origin in systems developed for public cinemas, many years ago. At first all films were recorded in mono, with one speaker placed directly behind the silver screen. As technology improved and music was starting be recorded in stereo (two channels) rather than one (mono), so were soundtracks. This was a vast improvement to Dolby Surround and was called Dolby Pro Logic, which is a four-channel system, which consists of Left, Centre, Right and Surround with the centre and surround signals processed out of the left and right stereo signals. The back two channels were mono (they played the same information) and the centre as well as the back speakers were limited in dynamic range and frequency response. As time progressed and audio entered the digital era, it quickly became evident that since sound was now being stored and transmitted digitally, sound could now be processed digitally as well, resulting in a huge step forward for surround sound and effects. The main difference between the previous analogue surround formats and new digital surround formats was the fact that with analogue systems, the maximum number of recordable channels were two. With their vast experience in sound manipulation, the Dolby-company were the first to have an acceptable digital system for delivering this new, discreet, digital surround sound. The Dolby Digital-EX system adds two extra surround speakers, which results in two back surround speakers and two side surround speakers. Sound can now be sent across, over, through or between only the surrounds! This new format is produced digitally and makes use of the complex digital processor, to afford the user a more realistic and natural sounding surround experience from stereo signals. There is also a new version of DTS that works with any stereo signal. Sound can now be sent across, over, through or between only the surround speakers. Luckily, if a customer invested in 6- or 7.1 surround systems, almost any modern surround sound processor will create sound to go to those channels. This format is produced digitally and makes use of the complex digital processor, to afford the user a more realistic and natural sounding surround experience from stereo signals.