Jamo D 7 SUB Owner/User Manual - Page 15

calculated compensation

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All seven main speakers in the D 7 System are designed for wall mounting. But as a new option, the D 7LCR is also designed for free standing - on an extremely sturdy dedicated floor stand. When wall mounted more parameters are "controlled" than with a free standing position: As there is no distance from the speaker to the rear wall, we know the room amplifies low frequencies and how much. We recommend placing the speaker 1 metre above the floor. The most common listening distance is 2 - 4 metres, so we can quite accurately predict the contribution from floor reflections too. Wall mount: The rear wall "amplifies" low frequencies and the floor actually gives a dip in approximately the same range. With a carefully calculated compensation in the crossover we end up with a linear frequency response, down to 80 Hz (-3dB). 5

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5
All seven main speakers in the
D 7
System
are
designed for wall mounting. But as a new option, the
D
7LCR
is also designed for free standing – on an
extremely sturdy dedicated floor stand.
When wall mounted more parameters are “controlled”
than with a free standing position: As there is no
distance from the speaker to the rear wall, we know the
room amplifies low frequencies and how much. We
recommend placing the speaker 1 metre above the
floor. The most common listening distance is 2 – 4
metres,
so
we
can
quite
accurately
predict
the
contribution from floor reflections too.
Wall mount:
The rear wall “amplifies”
low frequencies and the
floor actually gives a dip
in
approximately
the
same range.
With
a
carefully
calculated compensation
in the crossover we end
up
with
a
linear
frequency
response,
down to 80 Hz (-3dB).