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4
Wall mount:
The rear wall “amplifies” low frequencies and the floor
actually gives a dip in approximately the same range due
to the first floor reflection reaching the ear in opposite
phase with the direct sound from the speaker.
The speaker can be used as full range. In this case the
subwoofer should be adjusted to blend in seamlessly in
order to suit the room and personal preferences. However,
D 400 is intended for crossover at 80 or 100 Hz – again
depending on the room.
The resonance frequency of the tweeter is as low as 600 Hz. The x-over to the mid-woofer
is set at 1.7kHz but due to the excellent low frequency extension we use a low Q 2
nd
order
filter to roll it off downwards. So, actually it plays down to 1 kHz. Thereby, we secured a
seamless integration between the drivers, and avoided potential phase errors caused by
high order filtering.
D 430
D 430 is a 2 way bass reflex system featuring a 6½” woofer and a 1” DCD
tweeter.
This compact bookshelf speaker can be placed on a bookshelf – or on the
designated D 4FS stand – providing a very stable placing at the correct
listening height.
The D 4FS can be placed either by using the adjustable
spikes securing a good mechanical coupling to the floor
independent of floor materials or, if you prefer to
decouple it from the floor, by using the enclosed rubber
absorbers. The design and choice of material for the
rubber absorbers (PUR 80 Shore A) was made to match
exactly the D 4 speakers.
The D 430/D 450/D 4CEN all feature Jamos Convex Tapered Vent. This high
flow bass reflex port design ensures less turbulence and allows 5 dB higher SPL before port
noise occurs – which means that in practical life, port noise is eliminated!
The D 430 features gold plated bi-wiring/amping terminals – giving you all possibilities of
“fine-tuning” the sound by using cables that suit exactly your equipment, your room and
personal preferences.