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- 1\'\' Voice Coil Epotex former
- Ferrite Magnet Circuit
- 90.3 dB sensitivity
- Impedance 8 Ohm
- Diameter 20 Cm
- weight 1.5 kg
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- 96 dB Sensitivity 1 W / 1 m
- 200 W Power Handling
- 2" Aluminium Sandwich Voice Coil for low Power Compression
- Double treated Cone for Water Protection
- Neodymium Magnet System
- Triple Aluminum demodulating Rings for ultra low Distortion
- Optimal for compact 2- or 3-way Systems
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- 95.5 dB sensitivity 1 W / 1 m
- 200 W + 80 W Power Handling
- 2" + 1.75" Aluminum Sandwich Voice Coil
- Single Point Source providing coherent Wave Front
- 90° conical Dispersion
- Optimal for compact 2-way Systems
- Ligh weight Carbon Fiber Diaphragm
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- 8” neodymium magnet driver with 1.5” voice coil, providing 200Wrms (AES) continuous power handling
- Suitable for line array applications, utilizing a space-efficient octagonal chassis profile
- Optimized flux distribution in the magnet assembly provides low harmonic distortion
- M-roll surround provides progressive excursion control, generating a smooth frequency response
- Intelligent heat management in both chassis and magnet assembly design offers reduced thermal compression
General specifications
Nominal diameter (mm/in) |
203/8 |
Power Rating (AES, W rms) |
200 |
Nominal impedance (Ω) |
8 |
Voice coil diameter (mm/in) |
50.8/2.0 |
Magnet type |
Neodymium |
Chassis type |
Cast aluminium |
Sensitivity (dB) |
92 |
Frequency range (Hz) |
70-6000 |
Coil material |
Round copper |
Cone material |
Kevlar loaded paper |
Surround material |
Cloth-sealed |
Suspension |
Single |
Xmax (mm/in) |
4/0.16 |
Gap depth (mm/in) |
8.0/0.32 |
Voice coil winding width (mm/in) |
15.0/0.63 |
Small Signal Parameters
D (m/in) |
0.17 |
Fs (Hz) |
80.3 |
Mmd (g/oz) |
22.39 |
Mair |
1.94 |
Qms |
1.33 |
Qes |
0.59 |
Qts |
0.41 |
Re (Ω) |
5.85 |
Vas (lt/ft3) |
11.3/0.399 |
BI (Tm) |
11.22 |
Cms (mm/N) |
0.16 |
Rms (kg/s) |
9.6 |
Le (mH) |
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Mounting Information
Overall diameter (mm/in) |
225/8.8 |
Overall depth (mm/in) |
100/4.16 |
Cut-out diameter (mm/in) |
187/7.4 |
Mounting slot dimensions (mm/in) |
6.5/0.26 |
Number of mounting slots |
8 |
Mounting slot PCD/ width accross flats |
210/8.3 |
Unit weight (kg/lb) |
1.52/3.34 |
| ALPHA- Serie 100W- 200W
Recommended for professional audio mid-range applications in a sealed cabinet, or as a mid-bass in a vented
satellite enclosure.
SPECIFICATION
- Nominal Basket Diameter 8“, 203.2 mm
- Nominal Impedance 8 ohms
- Power Rating Watts 125 W / Music Program 250 W
- Resonance 73 Hz
- Usable Frequency Range 58 Hz - 5 kHz
- Sensitivity 94
- Magnet Weight 20 oz.
- Gap Height 0.25“, 6.35 mm
- Voice Coil Diameter 1.5“, 38.1 mm
THIELE & Small Parameters
- Resonant Frequency (fs) 73 Hz
- DC Resistance (Re) 5.3
- Coil Inductance (Le) 0.44 mH
- Mechanical Q (Qms) 4.6
- Electromagnetic Q (Qes) 0.68
- Total Q (Qts) 0.59
- Compliance Equivalent Volume (Vas) 17.7 liters / 0.6 cu. ft.
- Peak Diaphragm Displacement Volume (Vd) 67 cc
- Mechanical Compliance of Suspension (Cms) 0.28 mm/N
- BL Product (BL) 7.8 T-M
- Diaphragm Mass inc. Airload (Mms) 17 grams
- Efficiency Bandwidth Product (EBP) 107
- Maximum Linear Excursion (Xmax) 3.2 mm
- Surface Area of Cone (Sd) 210.0 cm²
- Maximum Mechanical Limit (Xlim) 7.1 mm
MOUNTING Information
- Recommended Enclosure Volume
Sealed 5-7 liters / 0.18-0.25 cu. ft.
Vented 16.7-25.5 liters / 0.59-0.90 cu. ft.
- Overall Diameter 8.24“, 209.2 mm
- Baffle Hole Diameter 7.13“, 181 mm
- Front Sealing Gasket fitted as standard
- Rear Sealing Gasket fitted as standard
- Mounting Holes Diameter 0.22“, 5.5 mm
- Mounting Holes B.C.D. 7.75“, 196.9 mm
- Depth 3.25“, 83 mm
MATERIALS of Construction
- Copper voice coil
- Polyimide former
- Ferrite magnet
- Vented core
- Pressed steel basket
- Paper Cone
- Cloth cone edge
- Solid composition paper dust cap
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Nominal Specifications - Nominal Diameter 8“, 200 mm
- Overall Diameter 8.81/8.18“, 223.7/207.9 mm
- Bolt Circle Diameter 8.27“, 210 mm
- Baffle Cutout Diameter 7.20“, 183 mm
- Depth 3.88“, 98.5 mm
- Flange and Gasket Thickness 0.43“, 10.8 mm
Electrical Specifications - Minimum Impedance 6.4 Ohm
- Nominal Impedance 8 Ohm
- Nominal Power Handling*** 200 W
- Maximum Power Handling**** 400 W
- Sensitivity (1W/1m) 97 dB
- Frequency Range 80 - 6300 Hz
- Voice Coil Diameter 2“, 52 mm
- Winding Material Aluminium
- Former Material Glass Fiber
- Winding Depth 0.39“, 9.8 mm
- Magnetic Gap Depth 0.31“, 8 mm
- Flux Density 1.3 T
THIELE & SMALL Parameters - Resonant Frequency (fs) 90 Hz
- DC Resistance (Re) 5.3 Ohm
- BL Product (BL) 13 N/A
- Diaphragm Mass inc. Airload (Mms) 23 grams
- Mechanical Compliance of Suspension (Cms) 0.14 mm/N
- Rms 1.53 Kg/s
- Electromagnetic Q (Qes) 0.41
- Mechanical Q (Qms) 8.5
- Total Q (Qts) 0.39
- Compliance Equivalent Volume (Vas) 0.29 ft³, 8.26 dm³
- Surface Area of Cone (Sd) 32.09“², 207 cm²
- Maximum Linear Excursion (Xmax)* 3.57 mm
- Xdamage** 10.65 mm
- Coil Inductance (Le) 0.41 mH
- Diaphragm mass (Mmd) 21.2 g
- Eta Zero 1.44 %
Notes
- *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
- **Maximum excursion before permanent damage
- ***2 Hours Test According to AES 2-1984 Rev. 2003
- ****Maximum power is defined as 3dB greater than nominal power
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