All THX Ultra Front Speakers in a system must have a virtually identical sonic signature. Listeners hear the exact position of front images and pans. THX Select Front Speakers have a simplified and refined directivity pattern. THX Select Speakers may be smaller and easier to place, yet have superb tonal balance and clarity, and encompass a much wider range of speaker design philosophies and sound types. All THX Select Front Speakers in a system must have a virtually identical sonic signature.
Listeners hear the exact position of front images and pans.
THX Select Front Speakers can have bass extension beyond that of THX Ultra Speakers. Select and Ultra usually come in the form of home theater systems - definitely not in the computer world. However, these standards of Ultra and Select show how THX brings products down to the grindstone in terms of requirements. Not anybody can get a Select or Ultra brand - it must be earned. Quality of materials - For high fidelity in sound, a company must use a good design and construction.