Напольная акустика — Acora Acoustics SRC-2

The SRC-2 is the twin-woofer granite tower from Acora Acoustics of Scarborough, Ontario, designed by company founder Valerio Cora. The quartz QRC-2 was later derived from it, but the SRC-2 keeps the black granite enclosure and a higher price - USD 37,000 per pair at launch and USD 40,000 or CAD 54,000 in 2025.

Key specs that matter

The 2.5-way bass reflex layout pairs two 7 inch sandwich paper cones with a 1 inch beryllium dome tweeter, all supplied by the Danish company Scan-Speak. Acora rates the impedance at 4 ohm, sensitivity at 92.5 dB for 1 W at 1 m and bandwidth at 29 Hz to 30 kHz, with an amplifier range of 10 W to 250 W. The cabinet is 109.2 cm tall, 45.7 cm wide and 35.6 cm deep at the base, and each unit weighs about 110.7 kg. Panels are 3 cm high-polish granite in Nero Assoluto or Mystic Grey as standard, with rarer stones available to order, and since no two slabs are the same, every pair carries its own grain pattern.

Engineering and use context

No corner of the enclosure is a right angle, and the stone is so stiff that the cabinet needs no internal bracing. Cora's goal for the crossover was the simplest circuit that met his targets, and its slopes are described as fourth order with a little more on top. The network is arranged for signal purity and mechanical isolation inside the cabinet, and the beryllium dome is fed with no resistor in its path. Acora opens and modifies the drivers in Toronto before fitting them. A single pair of Cardas copper binding posts takes one speaker cable per side. Buyers choose between spikes with gold covers and Teflon-faced furniture sliders under the base. The owner's manual prescribes granite polish and a chamois cloth for care and warns never to spray polish near the drivers. It also asks that unpacking be done with qualified help because of the mass. Cora learned stonework in his father's restoration business and developed the machinery used to cut the cabinets.

Pairing

The low nominal impedance favours transistor amplifiers with good current delivery, and the low end of its power rating leaves room for smaller designs as well. The manual cautions that driving the speaker with too little power is more likely to cause damage than using an amplifier with more power than needed, so a generous reserve is the safer choice.

Alternatives

The Acora MRC-3 is a marble floorstander that adds a third driver to the MRC-2 layout and is priced at USD 15,990 per pair.