| Brand | Thiel Audio |
| Model | CS27 |
| Drivers | Tweeter: 1 inch (2.5 cm) aluminum dome, 64 g (2.3 oz.) neodymium magnets, copper pole sleeve, short coil/long gap design with 3mm Xmax, coincidentally mounted with midrange.; Midrange: 4.5 inch (11.5 cm) with aluminum star-diaphragm, 3 inch diameter voice coil, 115 g (4 oz.) neodymium magnet, copper pole sleeve, short coil/long gap design with 6mm Xmax, die cast chassis.; Woofer: 8 inch (20.3 cm) with anodized aluminum diaphragm, 2 inch (5 cm) diameter voice coil, stabilized by copper pole sleeve, copper pole ring, short coil/long gap design, die cast chassis.; Passive Bass Radiator: racetrack-shaped, foam panel, double surround. |
| Woofer | 8 inch (20.3 cm) with anodized aluminum diaphragm, 2 inch (5 cm) diameter voice coil, stabilized by copper pole sleeve, copper pole ring, short coil/long gap design, die cast chassis. |
| Woofer diameter (mm) | 203 |
| Midrange | 4.5 inch (11.5 cm) with aluminum star-diaphragm, 3 inch diameter voice coil, 115 g (4 oz.) neodymium magnet, copper pole sleeve, short coil/long gap design with 6mm Xmax, die cast chassis. |
| Midrange diameter (mm) | 115 |
| Tweeter | 1 inch (2.5 cm) aluminum dome, 64 g (2.3 oz.) neodymium magnets, copper pole sleeve, short coil/long gap design with 3mm Xmax, coincidentally mounted with midrange. |
| Tweeter diameter (mm) | 25 |
| Frequency response | 35 Hz – 20000 Hz +2.5 −2.5 dB |
| Enclosure | |
| Sensitivity (dB) | 87 |
| Impedance (Ω) | 4 |
| Recommended amplifier power, least (W) | |
| Recommended amplifier power, most (W) | |
| Built-in amplifier power (W) | |
| Height (mm) | 1041 |
| Width (mm) | 279 |
| Depth (mm) | 424 |
| Weight (kg) | 35 |
