Definitive Technology DI55R owner manual Hooking Up With Speaker Wire Only

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If the Mythos STs are your main set of speakers, you will hook up the left main/front channel red(+) terminal of your receiver or amplifier to the red(+) terminal of your left loudspeaker and the left main/front channel black(-) terminal of your receiver or amplifier to the black(-) terminal of your left loudspeaker. Connect the right channel main/front channel red(+) terminal of your amplifier or receiver to the red(+) terminal of your right loudspeaker and the black(-) terminal of the right main/front channel of your receiver or amplifier to the black(-) terminal of your right loudspeaker. It is essential that both speakers be connected in the same way (in phase) to its own channel of the amplifier. If you experience a great lack of bass, it is likely that one speaker is out of phase with the other.

If you are using the Mythos ST as side/rear surround speakers, hook up the left surround red(+) terminal of your receiver or amplifier to the red(+) terminal of your left surround speaker and the left surround black(-) terminal of your receiver or amplifier to the black(-) terminal of your left surround speaker. Connect the right surround red(+) terminal of your amplifier or receiver to the red(+) terminal of your right surround loudspeaker and the black(-) terminal of the right surround channel of your receiver or amplifier to the black(-) terminal of your right surround loudspeaker.

Hooking Up With Speaker Wire Only

The simplest implementation of use with DTS or Dolby Digital is to simply hook-up your Mythos ST with speaker wire as described above and set your receiver or processor’s menu to “Large” left and right main speakers and “no” subwoofer. The bass management system will then send the LFE .1 channel into the left and right channels and it will be reproduced by the subwoofers in your Mythos STs giving you all the benefits of the discrete LFE signal. The speakers have a special circuit that takes an infinitesimally small signal from the speaker level input and converts it to a low-level signal which then drives the subwoofer power amp.

Using the LFE Input on Your Mythos STs

With Dolby Digital or DTS, you have the option to use the low level LFE input in addition to the speaker wires. To do this, simply use a “Y” connector (available from your dealer) out of the LFE output on your receiver or processor to feed two line level cables, connecting one to the LFE input on your left Mythos ST and the other to the LFE input on your right speaker. “Tell” your bass management system that you have “large” left and right front speakers and “Yes” subwoofer.

Using Multi-Channel SACD or DVD-Audio with your Mythos STs

Because of the nature of their bass management systems, a multi-channel SACD player or DVD-Audio player (or any other format that requires using 6- channel interconnects) requires the use of an LFE connection between your receiver or processor and your Mythos ST. If you are using one of these players, please use the connection method outlined in the “Using the LFE Input” section.

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Contents Mythos ST Safety Precautions Unpacking Your Mythos STs Safety Precautions Specific to Mythos STBase Installation Instructions Please Inspect For Shipping DamageInstalling Cable Clip for AC Cord Positioning the Mythos Speakers in Your RoomPositioning Mythos ST as Left/Right Main Speakers Speaker Break-In Connecting Your LoudspeakersSpiking Your Loudspeakers Positioning Mythos ST as Rear/Side SurroundsHooking Up With Speaker Wire Only Using the LFE Input on Your Mythos STsUsing Multi-Channel Sacd or DVD-Audio with your Mythos STs Powering Up the Active Subwoofer Section Setting Your Speakers’ Low-Frequency Level Control Setting Low-Frequency Balance When Using Separate LFE InputTroubleshooting Complete Home Theater SystemsService Technical AssistanceSpecifications DUAT012609

DI55R specifications

The Definitive Technology DI55R is an innovative architectural speaker that combines high-performance audio quality with sleek design, making it an excellent choice for home theater systems and multi-room audio setups. This in-wall model is engineered to deliver superior sound reproduction, ensuring that users experience their favorite music, movies, and shows in a way that is both immersive and engaging.

One of the standout features of the DI55R is its advanced driver technology. The speaker is equipped with a 5.25-inch bass driver and a 1-inch aluminum dome tweeter. This combination allows the DI55R to deliver a full range of frequencies, from deep bass to crisp highs, creating a balanced sound that is both rich and detailed. The bass driver utilizes a poly graphite cone for enhanced rigidity and minimal distortion, allowing for accurate sound reproduction even at higher volume levels.

To further enhance the listening experience, the DI55R employs Definitive Technology's patented BDSS (Balanced Double Surround System) technology. This unique design offers improved midrange response and wider dispersion of sound, ensuring that every listener in the room can enjoy consistent audio performance, no matter where they are seated. The result is a speaker that can fill a room with sound, making it ideal for larger spaces.

Installation of the DI55R is designed to be as straightforward as possible. The speaker features a convenient, paintable grille that can be customized to match the décor of any room. Additionally, its low-profile design ensures that it blends seamlessly into walls, providing an unobtrusive audio solution without sacrificing performance. The speaker's rear enclosure is engineered to minimize sound leakage, further enhancing the clarity and integrity of the audio.

In terms of connectivity, the DI55R is compatible with a variety of audio systems, enabling effortless integration into existing setups. Its robust construction and quality components make it a dependable choice for both casual listeners and audiophiles alike.

Overall, the Definitive Technology DI55R stands out as a premium architectural speaker that brings together advanced technology, exceptional sound quality, and aesthetic appeal. Its combination of features makes it a versatile addition to any audio system, allowing users to transform their spaces into immersive sound environments.