Dual Voice Coil Subwoofer of Highest Power CapabilityIncredible powerful bass reproduction from surprisingly small cabinets. Extensive ventilation of the voice coil.Subwoofer, 2 x 500WMAX, 2 x 4 ohm High-quality inverse cone, gold-plated terminals, diecast basket, extra long excursion, double centering spider, suitable for professional and semiprofessional DJ and PA applications and for car HiFi and home cinema applications of highest requirements.
Hobby HiFi 03/2000 In view of this sound converter designed with an extra long excursion, all other bass speakers introduced in HOBBY HIFI so far simply fade."
| Impedance (Z) | 2 x 4 ohm |
| Resonant frequency (fs) | 20Hz |
| Max. frequency range | f3-1,500Hz |
| Rec. crossover freq. (fmax.) | 400Hz |
| Music power | 2 x 500WMAX |
| Power rating (P) | 2 x 350WRMS |
| SPL (1W/1m) | 93dB |
| Suspension compl. (Cms) | 0.22mm/N |
| Moving mass (Mms) | 305g |
| Mech. resistance (Rms) | 12.7kg/s |
| Mech. Q factor (Qms) | 2.97 |
| Electr. Q factor (Qes) | 0.27 |
| Total Q factor (Qts) | 0.25 |
| Equivalent volume (Vas) | 480 l |
| DC resistance (Re) | 2 x 3.7 ohm/1 x 7.4 ohm |
| Voice coil induct. (Le) | 2 x 1.1mH/1 x 4.6mH |
| Voice coil diameter | 99.3mm |
| Voice coil former | aluminium |
| Voice coil winding height | 37.8mm |
| Air gap height | 12mm |
| Linear excursion (XMAX) | ±12.9mm |
| Eff. cone area (Sd) | 1,250cm2 |
| Volume displacement (Vd) | 1,612.5cm3 |
| Force factor (BxL) | 32.4Tm |
| Reference efficiency (No) | 1.37% |
| Magnet diameter | 220mm |
| Magnet weight | 200oz |
| Mounting cutout | Ø 425mm |
| Mounting depth | 220mm |
| Dimensions | Ø 460mm |
| Weight | 17kg |
| Rec. net cabinet volume | |
| Closed | 70 l |
| Bass-reflex | 135 l |