Caratteristiche
☑ 4,5-inch Inside/Outside copper voice coil
☑ 3000 Watt continuous program power handling
☑ 98.5 dB Sensitivity
☑ 30 Hz - 1 kHz Frequency range
☑ Dual-forced air ventilation for minimum power compression
☑ Dual spider designed with silicon based damping control
☑ BL of 34.5 Txm to provide a faster and accurate low frequency
The LF21N451 is a very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression. The height of the voice coil has been specifically designed to improve the excursion and linearity at very low frequencies. The LF21N451 uses a special RCF developed carbon fibre + nylon + cellulose composite pulp which reinforces and improves the rigidity of the cone structure. The new pulp and the large triple roll surround along double silicon spider system ensure excellent control and makes the cone resistant to deformation caused by very large displacements and pressure created by the transducer’s high excursion behaviour. A fully optimised T-pole design generate the minimum amount of flux modulation. The dual-forced air venting system provides a very efficient voice coil ventilation to minimize the power compression.
RCF LF21N451
653,31 €
Tasse incluse
Spedito entro 5/7 Giorni
Caratteristiche
☑ 4,5-inch Inside/Outside copper voice coil
☑ 3000 Watt continuous program power handling
☑ 98.5 dB Sensitivity
☑ 30 Hz - 1 kHz Frequency range
☑ Dual-forced air ventilation for minimum power compression
☑ Dual spider designed with silicon based damping control
☑ BL of 34.5 Txm to provide a faster and accurate low frequency
The LF21N451 is a very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression. The height of the voice coil has been specifically designed to improve the excursion and linearity at very low frequencies. The LF21N451 uses a special RCF developed carbon fibre + nylon + cellulose composite pulp which reinforces and improves the rigidity of the cone structure. The new pulp and the large triple roll surround along double silicon spider system ensure excellent control and makes the cone resistant to deformation caused by very large displacements and pressure created by the transducer’s high excursion behaviour. A fully optimised T-pole design generate the minimum amount of flux modulation. The dual-forced air venting system provides a very efficient voice coil ventilation to minimize the power compression.
close
| Specifiche generali | Diametro Nominale | 21 inch / 533 mm |
|---|---|---|
| Impedenza nominale (ohm) | 8 ohm | |
| Potenza musicale (watt) | 3000 W | |
| Potenza | 1500 W | |
| Sensibilità (dB) | 98.5 dB | |
| Gamma di frequenza | 30 - 1000 Hz | |
| Diametro effettivo del pistone | 470 mm / 18.5 inch | |
| Escursione max prima della rottura | 58 mm / 2.28 inch | |
| Impedenza Minima (ohm) | 7.1 ohm | |
| Diametro Bobina | 4.5 inch / 114 mm | |
| Materiale di avvolgimento della bobina | Copper | |
| Lunghezza della bobina | 34 mm / 1.34 inch | |
| Numero di strati | 2 | |
| Strati bobina (tipologia) | inside/outside | |
| Spessore piastra superiore | 15 mm / 0.59 inch | |
| Design del cono | Curved | |
| Materiale del surround | Polycotton | |
| Design del surround | Triple roll | |
| Magnete | Neodymium | |
| Aerazione Dual-Force | Yes | |
| Spider | Dual with silicon based damping control | |
| Parametri di Thiele & Small | Frequenza di Risonanza (Fs) (Hz) | 30 Hz |
| Resistenza (Re) (ohm) | 5.60 ohm | |
| Fattore di merito meccanico (Qms) | 6.10 Qms | |
| Fattore di merito elettrico (Qes) | 0.27 Qes | |
| Fattore di qualità totale (Qts) | 0.26 Qts | |
| Fattore Bl (Bl) (T x m) | 34.50 T x m | |
| Massa mobile effettiva (Mms) g | 315.0 g | |
| Volume equivalente alla cedevolezza (Vas) (litri) | 375.0 liters | |
| Area del pistone effettiva (Sd) (m2) | 0.170 m2 | |
| Massima escursione lineare (Xmax) (mm) | 13 mm | |
| Induttanza della bobina @ 1 kHz (Le1k) (mH) | 3.00 mH | |
| Efficienza Half-Space (Eff) (%) | 4.00% | |
| Informazioni di montaggio | Diametro complessivo | 547 mm / 21.54 inches |
| Diametro esterno vite | 527 mm / 20.75 inch | |
| Diametro foro vite | 7 mm / 0.28 inch | |
| Foro montaggio anteriore al pannello | 512 mm / 20.16 inch | |
| Alloggiamento posteriore | 512 mm / 20.16 inch | |
| Volume occupato dal driver | 6.5 liters / 0.26 ft3 | |
| Conformità agli standard | Standard di sicurezza | CE compliant |
| CE compliant | Altezza | 249 mm / 9.8 inches |
| Diametro | 547 mm / 21.54 inches | |
| Peso | 10.9 kg / 24.03 lbs | |
| Informazioni di spedizione | Altezza imballaggio | 284 mm / 11.18 inches |
| Larghezza imballaggio | 584 mm / 22.99 inches | |
| Profondità imballaggio | 604 mm / 23.78 inches | |
| Peso imballaggio | 13.5 kg / 29.76 lbs |
11100043
Scheda dati
- Pollici
- 21"