Sigma Acoustics · Orchestra
Orchestra 2.5
The queen of the Orchestra series. AMT NeoKapton tweeter, nano-carbon midrange, dual 30 cm woofer.
Sonic characteristics
Emotion and sonic realism.
Delicate and refined in the pianissimos, explosive and moving in the most dynamic moments. Created to move like an orchestral ensemble: true sound, true emotions.
The drivers
The synergy of drivers.
The Heil tweeter — Air Motion Transformer — is recognised as one of the finest high-frequency drivers of any era: the speed with which it creates sound and returns to silence gives a sense of tangible presence.
The cabinet
Form serves only the sound.
A perfect fusion of aesthetic form in pure service of sound, with diagonal routing and curves that distribute the energy emitted by the drivers. Multi-layer hardwood veneers and high-density MDF, each calibrated to absorb or resonate at critical frequencies.
Technical specifications
Data sheet
All relevant parameters for the integration and technical evaluation of the Orchestra 2.5 model.
Complete technical documentation, CAD files and frequency response curves are available on request.
| Type | 3-way bass-reflex |
| Tweeter | AMT NeoKapton Air Motion Transformer |
| Midrange | 18 cm nano-carbon fibre sandwich |
| Woofer | Dual 30 cm paper sandwich · dual 80 mm coil |
| Sensitivity | 93.5 dB |
| Impedance | 6 Ω |
| Max power | 500 W |
| Recommended amplification | 40 W to 500 W |
| Frequency response | 20 – 30,000 Hz ± 3 dB |
| Crossover | 6 dB/octave · White Gold Litz wiring |
| Dimensions | 40 × 70 × h146 cm |
| Weight | 110 kg each |
| Warranty | 10 years on cabinet · 5 years on components |