Setup Info and Accessories


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Power

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.


VH Audio Hotbox - photo linked from VH Audio
(Chris's photo is much nicer than my crappy camera skills can produce.....but picture NOT showing the Furutech plug/outlets - see above)
 

 

Speaker positioning and room

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.


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