| Form Factor | Part |
| Signal Path | Passive Hardware |
| Dimensions | 40.6 × 40.6 × 28.2 cm (W × H × D) |
| Weight | 34lbs |
| Frequency Response | 20Hz-20kHz |
| Treble | 2x3 Multicellular Coaxial Horn |
| Midrange/Bass | 15" Paper Cone |
| Sensitivity | 100dB/W/4' (Measured in Altec 620A enclosure) |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 1.5kHz |
| Crossover Slope | Low Pass: 12dB/Oct, High Pass: 18dB/Oct (Second Order, Third Order) |
| Dispersion (Horizontal) | 90° |
| Dispersion (Vertical) | 40° |
| Compression Diaphragm Material | Aluminum |
| Resonant Frequency (Fs, Woofer) | 30Hz |
| Voice Coil Diameter (Treble) | 1.75" |
| Voice Coil Diameter (Woofer) | 3" |
| Voice Coil Wire Material | Aluminum |
| Voice Coil Wire Geometry | Rectangular |
| Magnet Material | AlNiCo V |
| Magnet Weight (Treble) | 1.2lbs |
| Magnet Weight (Woofer) | 4.4lbs |
| Power Handling (AES) | 65W |
| Finish | Dark Gray |
| MSRP (1975) | £180 |
