The
audio equipment has a separate
240VAC mains spur, run straight
from the
fuse box to behind the equipment
rack (a distance of about
12m). Conductors in the spur
cable are 6mm2(~9AWG).
Two Furutech FP-15A-Cu AC duplex
outlets are mounted into a fire
and
acoustic rated wall-box. At the
wall socket an
Audience
aR2p-TO, Teflon capped
line power conditioner (240V
version) is used. Two
VH
Audio Hotbox's
with Furutech FI-11Cu male wall plug and
FP-15Cu outlets are plugged
into the aR2p-TO.
Power cords are
all
DIY. Bob
Crump's
'Asylum' recipe for the
turntable/SDS, Chris
VH's DIY
Flavor 2 design on
the pre/power amps and VH Audio Flavor
3 on the digital sources. The
DIY F2/F3s can be used with many
different connectors
available from Chris' parts list. I
chose the Furutech FI-11Ag IECs and
the FI-11Cu male plugs.
All power cords have been made a similar
length to help maintain a star
earthing scheme.
The room size
had to fit basic design
constraints - odd shapes would be
difficult to analyse and expensive
to build,
so basic rectangular construction
was chosen.
Dimensions are: 6m length, 4.3m
width and 2.7m height. The
dimensions
of the room started by following
Sepmeyer's 1 : 1.6 : 2.33
ratios and was slightly adjusted
using basic (calculated) spectrum
analysis of room modes.
The corners behind the speakers
previously had DIY bass traps
(shown in the front photo) - these
have been removed as they were
found to be absorbing too much low
bass energy and are not required
with the ATC SCM100's. Two 1200mm
DIY acoustic panels are stacked in
each of the front corners. Some
100mm foam panels are mounted to
the front wall each side
of the window with some Vicoustic
DC2 diffuser panels above them. Vicoustic
Wavewood 1.2m panels are mounted
vertically at the first
reflection points of the speakers
with some more 1.2m Wavewood
panels
mounted horizontally along the
side walls. DC2 diffusers are
mounted above the Wavewood panels
and more of the DC2 panels on the
rear wall above the record
shelving. Two groups of four DC2
diffusers
are attached to the ceiling at the
first reflection points between
the
speakers and the listening
position.
Speakers
are positioned with the front
baffles postioned about 1.9m from
the
front wall and the centre of the
front baffles about 900mm from the
side walls. Speakers are placed as
symmetrically as possible
(measured
and matched from walls). The
listening position is 2m from the
rear
wall. This forms a nearfield 2.5m
equilateral listening triangle
between speakers
and listening position.
Its
amazing how focussed and precise
the soundfield of a big baffled
speaker like the SCM100 can be
when set up in this manner. The
superb
clarity and neutrality of
the SCM100 is exploited and
provides
great insight into recordings, The
music produced is compelling.
