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.
Each of the
front corners behind the speakers
have 3 stacked Vicoustic Super
bass traps and there are Vicoustic
Vicpattern Ultra and DC2 diffuser
panels on the front wall each side
of the window. 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.
