 |
 |
| 21", 1500W RMS, 3000W program, 4.5" coil |
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. |
| CARACTERISTICI |
| 4,5 - inch Inside/Outside copper voice coil |
| 3000 Watt continuous program power handling |
| 98.5 dB Sensitivity |
| 30 Hz - 1000 Hz 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 |
|
|
|
| APLICAŢII |
| • The LF21N451 is ideal in applications where light weight,very high BL and power handling are required. |
| • It's especially used for tourimg,perfect for powerful lows in horn loaded sub bass system or reflex designs. |
|
| SPECIFICAŢII GENERALE |
|
| Diametrul nominal: |
530 mm / 21 inch |
| Impedanţă: |
8 Ω |
| Putere program muzical: |
3000 Watts AES |
| Putere nominală: |
1500 Watts AES |
| Sensitivitate: |
98.5 dB (1W / 1m) |
| Gama de frecvenţă: |
30 ÷ 1000 Hz |
| Diametrul efectiv al pistonului: |
470 mm / 18.5 inch |
| Deplasare maximă: |
58 mm / 2.28 inch |
| Impedanţă minimă: |
7.1 Ω |
| Diametrul bobinei: |
115 mm / 4.5 inch |
| Materialul bobinei: |
Copper |
| Grosimea bobinajului: |
34 mm / 1.33 inch |
| Numărul straturilor de bobinaj: |
2 |
| Top Plate Thickness: |
15 mm / 0.6 inch |
| Cone Material: |
No pressed pulp carbon fiber reinforced |
| Cone Design: |
Curved |
| Surround Material: |
Polycotton |
| Surround Design: |
Triple roll |
| PARAMETRI THIELE - SMALL |
|
|
| Rezistenţă DC: |
Re |
5.6 Ω |
| Factor mecanic: |
Qms |
6 |
| Factor electric: |
Qes |
0.27 |
| Factor total: |
Qts |
0.26 |
| Factor BL |
BL |
34.5 T - m |
| Masa efectivă în mişcare: |
Mms |
315 gr |
| Cas air load: |
Vas |
375 liters |
| Suprafaţa efectivă a pistonului: |
Sd |
0.173 m² |
| Deplasarea lineară maximă: |
Xmax |
13.2 mm |
| Inductanţa bobinei @ 1KHz: |
Le1k |
3.0 mH |
| Eficienţa Half-space: |
Eff |
4.0 % |
| DIMENSIUNI ŞI GREUTATE |
|
| Diametru: |
547 mm |
| Diametrul la nivelul găurilor de şurub: |
527 mm |
| Diametrul găurilor de şurub: |
6.5 mm |
| Diametrul cercului pentru montaj frontal: |
512 mm |
| Diametrul cercului pentru montaj din spate: |
512 mm |
| Lungime: |
250 mm |
| Volume occupied by the driver: |
6.5 liters |
| BAFFLE CUTOUT DIAMETER |
|
| Greutate netă: |
10.9 kg |
| Greutate în ambalaj: |
12.1 kg |
|
 |
 |
|
|
|
Descărcaţi aici catalog Precision Transducers în limba engleză.
 PDF, 4.70MB
|
|
|
|
