8FTF50TB Coaxials 8 inches
Notes
- 2 INCH WOOFER ALUMINIUM VOICE COIL
- 1.75 INCH COMPRESSION EDGEWOUND CCA VOICE COIL
- 92.1 dB/SPL SENSITIVITY
- 400 WATT PROGRAM POWER HANDING
- FEM OPTIMIZED MOTOR AND SUSPENSIONS
- OPTIMIZED COOLING SYSTEM
- RESONANCE FREE AND HEAVY DUTY BASKET DESIGN
- 1.75 INCH COMPRESSION EDGEWOUND CCA VOICE COIL
- 92.1 dB/SPL SENSITIVITY
- 400 WATT PROGRAM POWER HANDING
- FEM OPTIMIZED MOTOR AND SUSPENSIONS
- OPTIMIZED COOLING SYSTEM
- RESONANCE FREE AND HEAVY DUTY BASKET DESIGN
GENERAL SPECIFICATIONS
| Nominal diameter | 208-225(8) mm (in.) |
|---|---|
| Nominal impedance | 12 Ω |
| Minimum impedance | 11 Ω |
| Program power (1) | 400 W |
| AES Power rating(2) | 200 W |
| Sensitivity (3) | 91 dB |
| Frequency range | 79~4500 Hz |
| Voice coil diameter | 50(2) mm (in.) |
| Chassis material | Aluminium |
| Magnet material | Ferrite |
| Magnet dimensions (ODxIDxh) | 140X60X20 mm |
| Coil material | CCAW |
| Former material | Glass Fiber |
| Xmax(4) | 5.7 mm |
| Xmech(5) | 9.7 mm |
| Gap height | 8 mm |
| Voice coil Winding height | 17.5 mm |
| Diaphragm material | Titanium |
| Program power(1) | 100 W |
| AES Power rating(2) | 50 W |
| Sensitivity(3) | 106 dB |
| Frequency range | 1200~18000 Hz |
| Voice coil diameter | 44(1.75) mm (in.) |
| Coil material | CCAW |
SMALL SIGNAL PARAMETERS
| DC resistance(Re) | 9.5 Ω |
|---|---|
| Resonance frequency(Fs) | 79 Hz |
| Moving mass(Mms) | 25 g |
| Compliance(Cms) | 0.15 mm/N |
| Force factor(BL) | 12.6 N/A |
| Mechanical Q-factor(Qms) | 5.2 |
| Electrical Q-factor(Qes) | 0.72 |
| Total Q-factor(Qts) | 0.63 |
| Equivalent air volume(Vas) | 13.8 I |
| Voice coil Inductance(Le) | 0.35 mH |
| Diaphragm area(Sd) | 248 cm2 |
| Reference efficiency(Eta O) | 1.1 % |
SHIPPING INFORMATION
| Net weight | 3.4 Kg |
|---|---|
| Multipack size (1) (W x D x H) | 225x225x157 mm |
| Multipack weight | 3.9 Kg |
OTHERS
(1)Program power is defined as 3 dB greater than AES Power.
(2) Tested for two hours using a continuous, band-limited pink noise signal as per AES 2-1984 Rev. 2003. Loudspeaker tested in free air.
(3) From T/S parameters, measured with LMS DA LPM module.
(4) The Xmax is calculated as: (Hvc - Hg)/2+ Hg/4. Hvc is the voice coil height and Hg the gap height.
(5) The Xmech is calculated as: (Hvc - Hg)/2 +(Hg-2). Hvc is the voice coil height and Hg the gap height.
(6) Thiele-Small parameters are measured after preconditioning: a) at 20°C- 22°C, 50% humidity for 2 hours; b) by LMS LSI measurement.