*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
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
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)
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
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
93 dB sensitivity 1 W / 1 m
200 W + 80 W Power Handling
2" + 1.75" Sandwich Voice Coil
Single Point Source providig coherent Wave Front
90° conical Dispersion
Optimal for compact 2- or 3-way Systems
BETA Serie 225W- 350W
Recommended for professional audio mid-bass applications or as a woofer in vented enclosures. Also suitable
as a mid-bass speaker in sealed enclosures.
SPECIFICATION
Nominal Basket Diameter 8“, 203.2 mm
Nominal Impedance 8 ohms
Power Rating Watts 225 W / Music Program 450 W
Resonance 65 Hz
Usable Frequency Range 78 Hz - 4.5 kHz
Sensitivity 95.1
Magnet Weight 34 oz.
Gap Height 0.312“, 7.92 mm
Voice Coil Diameter 2“, 50.8 mm
THIELE & Small Parameters
Resonant Frequency (fs) 65 Hz
DC Resistance (Re) 5.99
Coil Inductance (Le) 0.49 mH
Mechanical Q (Qms) 4.95
Electromagnetic Q (Qes) 0.42
Total Q (Qts) 0.38
Compliance Equivalent Volume (Vas) 23.3 liters / 0.82 cu. ft.
Peak Diaphragm Displacement Volume (Vd) 63 cc
Mechanical Compliance of Suspension (Cms) 0.37 mm/N
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