![]() I needed to find a way to jury-rig a similar effect for a fraction of the cost. Unfortunately, the asking price for that Trinnov processor is absurdly beyond my budget. The better solution is to install additional speakers in the center between the other height channels (Top Middle position). Those speakers are now fixed in place with wiring through the walls and ceiling, and I can’t move them without remodeling the room. This issue is compounded by the fact that the locations where I had installed speakers when I built the home theater (before immersive audio was a concern I gave any thought to) were less than ideal for Atmos. That, combined with a low ceiling, makes it difficult for just four speakers (two in the front of the room and two in the back) to image a sound above my head convincingly. My own home theater is a long room with a lot of space behind my seats. Nonetheless, for some of us, a limit of four height channels isn’t enough to fill the top of the room with sound. 48 747-8Is were produced as well as 107 747-8F freighters with the final aircraft, a 747-8F which was also the 1574th and last 747 to be produced, delivered to Atlas Air on. The 747-8 was the worlds longest airliner until the 777X flew in 2020 and is the heaviest aircraft, commercial or military, manufactured in the U.S. The first test flight was on with the first 747-8I being delivered to Lufthansa in May 2021 and the first commercial flight taking place on. The 747-8I has the additional benefit of having similar training to the 747-400 and many interchangeable parts. ![]() The passenger version of the 747-8, the 747-8 Intercontinental (747-8I) is designed to carry up to 467 passengers in a 3-class configuration and fly more than 8,000 nautical miles (15,000 km) at Mach 0.855. It was the first stretched version of the 747 being 5.6m (18.3ft) longer than the 747-400 as well as having a wingspan that was 4m (13.5ft) wider with raked wingtips. It was designed to be quieter, more economical and more environmentally friendly than the 747-400 and was eventually renamed the 747-8. On Boeing announced a new 747 variant, the 747 Advanced, which used very similar General Electric GEnx engines and cockpit technology to the 787. Special variants include Air Force One, the Shuttle Carrier Aircraft and National Airborne Operations Center.ġ574 aircraft have been built over its 53-year lifespan and it remains one of the most iconic aircraft flying in the skies today. It has continued to be developed over its lifespan with 21 different passenger and cargo variants and the latest version, the 747-8, launched on. The 747 was the first aircraft dubbed 'Jumbo Jet' and later earned the moniker 'Queen of the Skies' as for many decades it was the favourite choice of airlines for long-haul routes. The 747’s first commercial flight was Pan Am’s ‘Clipper Young America’ which flew from New York JFK airport to London Heathrow on. The 747 was rolled out on with the first flight taking place and the aircraft certified in December of that year. ![]() In April 1966 Pan Am ordered 25 Boeing 747 at $20m each and in late 1966 Pratt & Whitney agreed to develop the JT9D, a high-bypass turbofan, for the aircraft.
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