Thiel CS2 Vintage Speakers - $800 (Greensboro)

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condition: excellent
make / manufacturer: Thiel
model name / number: CS2
size / dimensions: 12.25” x 12.25” x 39.5”
The Thiel CS2 speaker system exemplifies the company’s design philosophy. A columnar three-way system, the CS2 has an 8-inch long-throw polypropylene-cone woofer that operates in a Butterworth-tuned vented enclosure and crosses over to a 4-inch treated-cone midrange driver at 800 Hz. The second crossover, to a 1.1-inch soft-dome tweeter, is at 3,000 Hz. Time coherence of the drivers’ output is achieved by the backward-sloping speaker board, which places the effective sound sources of all the drivers equidistant from a listener seated at least 7 or 8 feet from the enclosure.

Phase coherence is achieved by using first-order (6-dB-per-octave) crossover slopes. But Thiel’s synthesized first-order crossover is different from many ordinary first-order electrical crossover networks. Since Thiel’s aim was to achieve a true acoustic crossover having the desired phase and amplitude characteristics, the inherent frequency and phase response of each driver had to be considered when designing the network. The electrical response of the network combined with the natural responses of the drivers produces overall slopes of 6 dB per octave. According to Thiel, this is the only type of first-order crossover that provides uniform amplitude, phase, and power response. For the closest possible approach to ideal characteristics, the Thiel network uses low-loss polypropylene and polystyrene capacitors and air-core inductors.

The CS2’s woofer is located near the middle of the speaker board, with the port below it. Above it are the closely spaced midrange and high-frequency drivers, which share a single large, flared cutout on the grille board.

The overall construction of the CS2 is exceptionally solid. The cabinet’s wood sides are 30 millimeters (about 1.2 inches) thick and are laminated with matched veneers. System specifications include a frequency response of 43 to 20,000 Hz ±2 dB, sensitivity of 87 dB sound-pressure level (SPL) at 1 meter with a 1-watt input, impedance of 6 ohms, and a recommended amplifier power of 40 to 250 watts per channel.

The cabinet of the Thiel CS2 is 12-1/4 inches wide, 12-1/4 inches deep at the base, 6 inches deep at the top, and 39-3/8 inches high. The system weighs 62 pounds.

post id: 7742836258


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