Dolby Surround, DTS Digital Surround | KEF Audio KIT100 guide

Dolby Surround

1. Dolby Digital

Dolby Digital is the multi-channel digital signal format developed by Dolby Laboratories. Dolby Digital consists of up to “5.1” channels – front left, front right, centre, surround left, surround right and an additional channel exclusively reserved for additional deep bass sound effects. (The Low Frequency Effects (LFE) channel containing bass frequencies of up to 120Hz). Unlike the analogue Dolby Pro Logic format, Dolby Digital’s channels can all contain full range sound information, from the lowest bass, up to the highest frequencies (22kHz).The signals within each channel are distinct from the others, allowing pinpoint sound imaging, and Dolby Digital offers tremendous dynamic range from the most powerful sound effects to the quietest, softest sounds, free from noise and distortion.

2. Dolby Pro Logic II

Dolby Pro Logic II is a new multi-channel playback format developed by Dolby Laboratories using feedback logic steering technology and offering improvements over conventional Dolby Pro Logic circuits. Dolby Pro Logic II can be used to decode not only sources recorded in Dolby Surround but also regular stereo sources into five channels (front left, front right, centre, surround left and surround right) to achieve surround sound.Whereas with conventional Dolby Pro Logic the surround channel playback frequency band was limited, Dolby Pro Logic II offers a wider band range (20Hz to 20kHz or greater). In addition the surround channels were monoaural (the surround left and right channels were the same) with previous Dolby Pro Logic, but with Dolby Pro Logic II they are played as stereo signals.

3. Dolby Surround

These are sources in which three or more channels of surround have been recorded as two channels using Dolby Surround encoding technology. Dolby Surround is used for the sound tracks of movies recorded on DVDs, LDs and video cassettes to be played onVCRs, as well as for the stereo broadcast signals of FM radio,TV, satellite broadcasts and cable TV. Decoding these signals with Dolby Pro Logic makes it possible to achieve multi-channel surround playback.The signals can also be played on ordinary stereo equipment, in which case they provide normal stereo sound.There are two types of DVD Dolby SURROUND recording signals. 1) 2-channel PCM stereo signals 2) 2-channel Dolby Digital signals. The KEF Instant Theatre is manufactured under license from Dolby Laboratories.“Dolby”,“Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories.

DTS Digital Surround

Digital Theatre Surround (also called simply DTS) is a multi-channel digital signal format developed by Digital Theatre Systems. DTS offers the same “5.1” playback channels as Dolby Digital (front left, front right and centre, surround left and surround right) as well as the stereo 2-channel mode.The signals for the different channels are fully independent, eliminating the risk of deterioration of sound quality due to interference between signals and crosstalk etc. DTS features a relatively higher bit rate as compared to Dolby Digital (1234 kbps for CDs and LDs, 1536 kbps for DVDs) so it operates with a relatively low compression rate. Because of this the amount of data is great, and when DTS playback is used in movie theatres, a separate CDROM synchronised with the film is played.With LDs and DVDs, there is of course no need for an extra disc; the pictures and sound can be recorded simultaneously on the same disc, so the discs can be handled in the same way as discs with other formats.There are also music CDs recorded in DTS.These CDs include 5.1-channel surround signals (compared to two channels on current CDs).They do not include picture data, but they offer surround playback on CD players that are equipped with digital outputs (PCM type digital output required). External DTS CD bitstreams coming in on the optical SPDIF audio CBL input of the KEF Instant Theatre will not be decoded by the KEF Instant Theatre system. DTS surround playback offers the same intricate, grand sounds as a movie theatre, right in your own listening room.“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theatre Systems Inc.

Macrovision

The KEF Instant Theatre incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use of this copyright protection technology must be authorised by Macrovision, and is intended for home and other limited viewing uses only unless otherwise authorised by Macrovision. Reverse engineering or disassembly is prohibited.

progressive scan output at 525p and 625p

Consumers should note that not all high definition television sets are fully compatible with this product and may cause artefacts to be displayed in the picture. In case of 525 or 625 progressive scan picture problems, it is recommended that you switch the connection to the ‘standard definition’ output by setting the DVD output to progressive “off”. If there are questions regarding the TV set compatibility with this 525p and 625p DVD player, please contact our customer service centre.

dvd region codes

The KEF Instant Theatre is shipped with a specific DVD region code as marked on the rear panel of the DVD player.This will be region “1” for America, region “2” for Europe and region “3” for Asia.The system will only play DVDs which match this region code.

KIT100 specifications

The KEF Audio KIT100 is a remarkable addition to the world of high-fidelity audio systems, designed to bring exceptional sound quality into the home environment. This innovative speaker system is a perfect blend of advanced engineering and elegant design, ensuring an immersive listening experience for audiophiles and casual listeners alike.

One of the standout features of the KIT100 is its unique Uni-Q driver array technology. This innovation places a 25mm tweeter at the acoustic center of a 130mm mid-bass driver, creating a single point source of sound. The result is a well-defined soundstage with remarkable imaging and clarity. Additionally, this design allows for a wider dispersion of sound, ensuring that listeners in different positions in the room can enjoy a consistent audio experience.

In terms of build quality, the KIT100 showcases KEF's commitment to craftsmanship. The cabinets are constructed from high-quality materials that minimize resonance, allowing the drivers to perform at their best. Available in several finishes, including walnut, black, and white, they seamlessly incorporate into any decor, making them not just audio equipment, but stylish home furnishings.

Another notable aspect of the KIT100 is its versatility. It is designed to pair perfectly with a variety of audio sources, from vinyl players to digital streaming devices. The inclusion of versatile connectivity options ensures compatibility with modern music systems, while the ability to handle both stereo and surround sound setups provides flexibility for different listening preferences.

The KIT100 also comes equipped with cutting-edge amplification technology. Each speaker features a built-in Class D amplifier, which provides a powerful and efficient performance that allows the system to deliver impressive dynamic range and control. This means that listeners can enjoy their favorite music genres, whether it’s classical, rock, or electronic, with fidelity to the artist's original intent.

In conclusion, the KEF Audio KIT100 is a sophisticated audio solution that combines unique technologies with high-quality materials and versatile functionality. With features like Uni-Q driver array technology, premium build quality, and advanced amplification, it stands out as an exceptional choice for anyone looking to enhance their home audio experience. Whether you are an audiophile or simply someone who appreciates great sound, the KIT100 promises to elevate your listening journey.