www.beyma.com THIELE-SMALL PARAMETERS 3 Notes: 1 The power capaticty is determined according to AES2-1984 (r2003) standard. 2 Program power is defined as power capacity + 3 dB. 3 T-S parameters are measured after an exercise period using a preconditioning power test. The measurements are carried out with a velocity-current laser transducer and will reflect the long term parameters (once the loudspeaker has been working for a short period of time). 4 The X max is calculated as (L vc - H ag )/2 + (H ag /3,5), where L vc is the voice coil length and H ag is the air gap height. TECHNICAL SPECIFICATIONS Nominal diameter Rated impedance Minimum impedance Power capacity 1 Program power 2 Sensitivity Frequency range Recom. enclosure vol. Voice coil diameter Bl factor Moving mass Voice coil length Air gap height X damage (peak to peak) 200 mm 8 in 8 Ω 6,8 Ω 50 W RMS 100 W 90 dB 1W / 1m @ Z N 30 - 6.000 Hz 15 / 40 l 0,5 / 1,4 ft 3 25,4 mm 1 in 5,9 N/A 0,021 kg 14 mm 6 mm 21 mm Resonant frequency, f s D.C. Voice coil resistance, R e Mechanical Quality Factor, Q ms Electrical Quality Factor, Q es Total Quality Factor, Q ts Equivalent Air Volume to C ms , V as Mechanical Compliance, C ms Mechanical Resistance, R ms Efficiency, η 0 Effective Surface Area, S d Maximum Displacement, X max 4 Displacement Volume, V d Voice Coil Inductance, L e 52 Hz 5,5 Ω 5,5 1,1 0,9 29,6 l 438 µm / N 1,3 kg / s 0,36 % 0,022 m 2 5,7 mm 110 cm 3 0,8 mH BF-8R LOW FREQUENCY TRANSDUCER ● 100 W program power ● Sensitivity: 90 dB (1W / 1m) ● Foam surround for extended bass response ● Ferrite magnet ● Steel basket KEY FEATURES Acústica Beyma SL - P.I. Moncada II, C/ Pont Sec, 1C - 46113 Moncada, Valencia (Spain) - Tel. +34 96 130 13 75 - [email protected] ● Smooth and flat response ● Low distortion ● Extended controlled displacement: X max ± 5,7 mm ● Suited for bass and midbass applications, sealed or vented small cabinets