Fyne Audio VINTAGE FIFTEEN, Information Manual

Page: 6 / 20

6
CROSSOVER
Although simple in topology, the design is
computer optimised, fine tuned subjectively
by critical auditioning.
The crossover makes use of high quality
precision components, including low loss LF
laminated iron core inductors, non-inductive
thick film resistors and extremely high grade
HF polypropylene capacitors. High quality
gold plated WBT Nextgen™ bi-wire terminals
are used, together with Van den Hul Matched
Crystal OFC wiring with high purity silver
coating, for transparent signal transfer. The
components are hard wired on fibre board
panels to minimise vibration, using a special
mastic.
A specially designed autotransformer using
the highest grade silicon steel laminations
impedance matches the HF compression
driver to the amplifier, with varnish vacuum
impregnation to eliminate distortion caused
by winding vibration.
Cryogenic treatment of the complete
crossover relaxes stresses in materials and
solder joints to maximise signal transparency.
A grounding terminal is fitted to minimise the
effect of radio frequency interference masking
fine detail.
BASSTRAX™ TRACTRIX DIFFUSER SYSTEM
The Vintage Series employs a downwards firing
port arrangement using a twin cavity reflex
loading system. This loading system broadens
the tuning frequency to reduce cone excursion,
and acts as a muffler, blocking standing waves
produced by the main internal port.
Below the vent in the base of the loudspeaker,
the BassTrax™ Tractrix profile diffuser is
used to convert the plain wave energy to an
expanding spherical 360-degree wavefront,
dispersing energy uniformly into the room.
This Tractrix profile has been previously
applied to horn loudspeakers by Voight in the
1920’s, but the application to a diffuser of this
type is novel and has been granted a patent.
The BassTrax™ Tractrix profile is known to
maintain a 90 degree angle at each
intersection of the expanding wavefront, thus
avoiding reflections. This clever arrangement
also makes the loudspeaker less critical of
room positioning.
ENCLOSURE
The high density birch ply construction is
pressed to ensure an extremely rigid and
low colouration structure. The drive unit is
coupled to internal bracing panels through
damping material to absorb energy. Each
cabinet is uniquely crafted from individually
selected Walnut and Burr Walnut real wood
and accented with gold anodised metalwork.
Heavy duty support spikes enable precise
levelling, with the provision of machined
aluminium cups for protection on wooden
floors.