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ELITE - UTOPIA BE ULTIMA
U s e r m a n u a l
13
Installing the subwoofers
Choosing the right location
Ultima subwoofers have been designed for very compact enclosures to facilitate integration. Bringing the bass
towards the front of the vehicle with the other speaker drivers improves timbre and staging. This also enables the
critical frequency range of between 20Hz and 100Hz to be allocated to speaker drivers set up to provide the best
results in terms of performance, neutrality and dynamics in this frequency range.
Mounting advice
The enclosure is dissociable from the subwoofer: it is what determines how the speaker driver sounds and performs.
Each subwoofer has specific characteristics which require a particular type of loading (closed or bass-reflex for
example) and an optimum internal volume. This principle must be respected to take advantage of the extremely high
performances the Ultima subwoofers are capable of.
Bass-reflex loading
The bass-reflex enclosure is ideal for Ultima's 8W subwoofer under certain conditions. It significantly increases
energy, providing very dynamic bass, and it is characterised by very high efficiency of the bass and sub-bass. It
is proscribed to alter the enclosure volume or the dimensions of the vent: bass-reflex enclosure volume: 22.5L
(0.79 cu.ft) per subwoofer with a vent measuring 23/8" (7cm) wide and 611/16" (16cm) long (refer to frequency
response curve and impedance curve page 14).
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