Tech Talk

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DVI and HDMI Cable Quandry
Cable Quandary: Composite, S-Video, Component Video, DVI, and HDMI Connectors At Axiom we take a rational, scientific and no-nonsense approach to cables in general, speaker cables in particular. If it's good-quality copper and it's thick enough for a given length (we like 12-gauge for speaker cable runs longer than 15 feet), then the cable's resistance is low enough to prevent any audible or sonic degradation.
By Alan Lofft
Tight or Flabby Bass?
Regular readers of loudspeaker and subwoofer reviews both online and in hi-fi/video magazines are used to seeing references to the sound quality of deep bass reproduction. Adjectives such as “tight” and “flabby” or “loose” are tossed around by reviewers in quite casual fashion, as if it’s a given that subwoofers or large loudspeakers have inherent traits of “tightness” or “flabbiness” based on their design.
By Alan Lofft
Treated vs Untreated: A Comparison of Two Identical Listening Rooms
At the Home Entertainment Show 2007, held in May in New York City’s Grand Hyatt Hotel, and sponsored by Stereophile and Home Theater magazines, one of the more interesting demonstrations let show attendees and the press hear and compare the combined effects of special room treatment and digital parametric equalization in one hotel room while across the hall was a virtually identical room with no treatments applied.
By Alan Lofft
Rear Projection - A Home Theater Alternative
If you are contemplating creating a dedicated basement home theater in your currently unfinished basement, or planning a new home with a home theater, here's an alternative projection arrangement that will let you move a DLP or LCD front projector into a neighboring utility room along with the associated amplifiers, satellite or cable-TV box tuners and related gear.
By Alan Lofft
Down to Earth: An Explanation of Grounding, Hum, and Conflicting Standards
To get a better understanding of this subject, take a look at the AC plugs on some of your audio-video gear, new and old, and on some appliances in your home. You’ll notice that some may have a 3-prong plug, others a 2-prong plug with one prong larger (polarized) than the other, and still others with two prongs the same size.
By Alan Lofft
Spotting Video Flaws: Motion Artifacts
Read this at your own risk! If you already own one of the High-Definition or Enhanced-Definition video display technologies in question, you may learn to see video defects that previously never bothered you, which, once isolated, may annoy you over time.
By Alan Lofft
What exactly is "Impedance"?
In a word, it’s resistance—opposition to the flow of electrical current (representing the audio signals) through your copper cables to the speaker drivers. It’s a kind of electrical "friction" to the movement of electrons through the copper.
By Alan Lofft
Dolby Digital
Dolby Digital is the trademarked name for Dolby Laboratories' system of discrete, digital 6-channel surround sound used in professional movie theaters and consumer home theater surround sound systems.
By Alan Lofft
Connection Essentials: The ABC's of A/V Plugs and Jacks
Got the Home Theater system connection blues? It's always a bit frustrating to newcomers and seasoned audio-video enthusiasts alike when you're faced with that array of input and output connectors. But it helps to understand which connectors to use and what kind of signals each carries.
By Alan Lofft
Some Surround Theory
Newcomers to Axiom's web site, the message boards or this newsletter may have noticed the emphasis I place on locating the two main left and right surround speakers in a standard 5.1-channel home theater setup to each side of the listening area (and a bit behind) rather than at the “rear” or “back.
By Alan Lofft
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