The Arca was the flagship model for this company, standing over a meter tall with their substantial front baffle made of most of a cherry tree, it’s easy to see the pride taken in this design. They have a heft that makes you feel you have most of a church organ rather than a pair of speakers. At 70kg each they don’t invite continual repositioning, but once in place their in-built spikes ensure that isolation can be maximized. With four screw-adjustable spikes they take a little setting up. Half a turn too much on any corner and a tiny rocking action can spoil the image. Four is arguably a poor number in Hi-Fi and I’ve successfully experimented with a single after-market rear spike taking over duties from the rear pair. Arca means ‘brilliant one’ in Sanskrit, but also stands for Absolute Response Corrected Alignment. This acronym starts to allude to how these hybrid electrostatic speakers set out to contradict much of the received wisdom about speaker design. SpecificationBass (Reflex): Double magnet Kevlar / Nomex cone systemMidrange and High Frequency: ElectrostaticCrossover: 4th order enhanced LinkwitzCrossover: Frequency 1,090 Hz 91 dB @ 1W/1mSensitivity : 91 dB @ 1W/1mPower Consumption: <1WOperating Temperature Range: 10-40 deg COperating Humidity Range: <85 % RHCharge-up Time: Less than one secondPower Supply: 110/220/230/240 Volts, 40-100HzPower Handling: 600W (20ms), 200W RMSLoudspeaker Terminals: Gold Plated, Oxygen & Halogen Free, Bi- wirable.Finish (Plantation Certified): 97mm Front Baffle solid cherry wood or larch. High gloss clear, black and specialty surfaces available on request.Dimension (H x W x D): 1170mm x 360mm x 500mmWidth of Electrostatic Unit: 479 mmWeight (unpacked): 70kg eachCabinet Material: Solid Hardwood and MDF 25mm Collection only from Reigate, RH2Large van/estate car will be required and these will be a two man lift Any questions, please dont hesitate to ask...