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Harwood Acoustics B110A Bextrene Bass-Midrange Driver for all KEF speakers and BBC LS3/5 Monitor Versions


manufacturer information

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Harwood Acoustics B110A Bextrene Bass-Midrange Driver for all KEF speakers and BBC LS3/5 Monitor Versions
Harwood Acoustics B110A Bextrene Bass-Midrange Driver for all KEF speakers and BBC LS3/5 Monitor Versions


Read test, please click it!

Verdict. "Conclusion: "The B110A replica essentially shows a very similar frequency response as the original compliment! The said resonance point looks completely different, and much more good-natured: There is no cant, only a dip, and this is made possible by the baffle step of the LS 3 / 5A housing is even perfectly balanced. "

Short data

Usage as Bass-Midrange
Impedance 8 Ohm
 
Frequency from 44 Hz
Max. Frequency 3.5 kHz
Sound pressure 81 dB

Chassis-data

Overall dimensions 131 x 131 mm
Baffle cutout 110 mm
Depth (Total) 67 mm
Front material Steel plate
Frame Material Steel plate
Membrane Type Cone
Membrane Surround Rubber
Dustcap Material Coated Sandwich Fibreglass
 
Voice coil Ø 25.4 mm
Voice coil height 12 mm
Voice coil material Kapton
Magnet Ø 90 mm

Thiele-Small-Parameter

Resonance fs fs: 44 Hz
Mechanical Q Qms: 3.8
Electrical Q Qes: 0.45
Total Q Qts: 040
Equivalent Air-Volumen Vas: 16.5 Liter
DC-Resistance Re: 7.1 Ohm
Coil Inductance Le: 0.58 mH
 
Mech. Compliance Cms: 1.5 mm/N
Moving Mass Mms: 8.7 g
mech. Resistance Rms: 0.63 kg/s-¹
Max. Excursion +/- Xmax: 3 mm
BL Product Bl: 6.2 N/A
Membrane Ø Md: 110
Membrane Area Sd: 88 cm²

Frequency

Impedance

Waterfall

PDF-Product information

Test Hobby hifi 06/2020 (DE)

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