HTP-1 Installation and User Guide Release 1.8.1
If you have only two upper speakers it is a good idea to choose the top middle pair. Many Dolby tracks
are authored to favor this upper pair. The “5.1.2” Atmos configuration uses the top-middle pair. DTS-X
streams are likely authored using four high speakers. The HTP-1 “remaps” any source arrangement to
match the speaker setup you choose using algorithms provided by the decoder. This is why you should
describe/configure your speaker setup as accurately as possible, though few people will be able to tell
the difference if a pair of speakers labeled “top front” are actually high on the wall in front.
Dolby® Enabled Speakers
Dolby® Enabled Speakers have two independent drivers with two independent inputs. One of them
points up so that the sound will reflect off the ceiling and appear to be a speaker on top. A Dolby
Enabled speaker must also include a filter to enhance the illusion of the sound coming from above.
Dolby Enabled speakers otherwise behave like two small speakers. When you specify a speaker as Dolby
Enabled, the Dirac calibration respects this to preserve the psychoacoustic filter included in the up firing
speaker.
HTP-1 User Manual
Page 35
V1.8.1