Progress
"The unconventional design was made possible because Gerhard placed the two bass drivers with their unusual dome diaphragms on the side walls, where they then perform their work in an impulse-corrected push-push arrangement. This acoustic concept is the best and easiest way to get a clean low frequency range..."
Holger Biermann, Lowbeats
Design
- Super slim 3-way speaker with push-push bass system
- Multiplex enclosure made of Baltic birch, optimally braced and damped
- Transitional crossover for excellent linearity and low energy storage
- Special ball corners and driver arrangement for optimized diffraction and low refraction
- Very uniform radiation, even off-axis
Technical data
- Impedance: 8 Ohm
- Efficiency 87dB / 1m / 2.85V
- Power rating: 100W
- Amplifier recommendation: 10W to 100W, transistor or tube
- Frequency response: ( - 3dB ) 40Hz - 20kHz
- Linearity: +- 2dB
- Distortion factor at 95dB below 0.5% above 100Hz
- Push-push tuning: 40Hz
- Transitional crossover with high linearity and low energy storage
- Takeover frequencies: 350Hz, 2.4kHz
- Dimensions: 1000mm H, 120mm W, 330mm D
- Weight: 18kG
- Principle: 3-way floorstanding loudspeaker with push-push system Components
Configuration
- Tweeter with 25mm silk dome. Neodymium drive
- 10cm midrange driver with coated fabric cone. Very low moving mass of only 2.93 g for sensitive response. Neodymium magnet with Faraday ring for high efficiency and low intermodulation distortion
- 2 x 13cm bass domes with internal magnet
