|
20893 |
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|
| Materials of construction |
 |
Kapton coil former |
| |
Polyamide-imide coated copper voice coil |
| |
APS ferrite magnet |
| |
Pressed steel chassis |
| |
Paper cone |
| |
Plasticised cloth (linen) cone edge |
| |
Solid composition paper dust dome |
| Performance optimised for sound reinforcement systems. Also suitable for lead and bass guitar, keyboards, guitar combos, club music systems and stage monitors. |
| Eminence Model No. |
Beta 12 |
| Nominal Chassis Diameter: |
12 , 304.8mm |
| Impedance: |
8 |
| Usable Frequency Range: |
50Hz to 5kHz |
| Average Sensitivity 1W@1m: |
100dB |
| Magnet Gap Depth: |
0.312 , 8mm |
| Voice Coil Diameter: |
2 , 50.8mm |
| Overall Diameter: |
12.187 , 309mm |
| Baffle Hole Diameter: |
11.187 , 284.2mm |
| Front Sealing Gasket: |
fitted as standard |
| Rear Sealing Gasket: |
fitted as standard |
| Fixing Holes Diameter (8 off): |
0.275 , 7mm |
| Fixing Hole P.C.D.: |
11.562 ,293.7mm |
| Resonant Frequency |
(fs): |
51.07Hz |
| Impedance |
(Re): |
7.25 |
| Coil Inductance |
(Le): |
0.78mH |
| Electromagnetic Q |
(Qes): |
0.52 |
| Compliance Equivalent Volume |
(Vas): |
125.38 litres |
| Displacement Volume |
(Vd): |
42.26cc |
| of Suspension |
(Cms): |
0.3150mm/N |
| BL Product |
(BL): |
11.75 T-M |
| Diaphragm Mass inc. Airload |
(Mms): |
30.8grams |
| Equiv. Resistance of Mechanical |
| Suspension Loss |
(Rms): |
1.8804N*sec/M |
| Efficiency Bandwidth Product |
(EBP): |
98.4 |
| Voice Coil Overhang |
(Xmax): |
0.8mm |
| Surface Area of Cone |
(Sd): |
532.36cm<equal; |
| Impedance at Resonance |
(Zmax): |
80.7 |
|
