low frequency transducer

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

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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 Xmax is calculated as (Lvc - Hag)/2 + (Hag/3,5), where Lvc is the voice coil length and Hag is the air gap height.

TECHNICAL SPECIFICATIONS

Nominal diameterRated impedanceMinimum impedancePower capacity 1

Program power 2

SensitivityFrequency rangeRecom. enclosure vol. Voice coil diameterBl factorMoving massVoice coil lengthAir gap heightXdamage (peak to peak)

200 mm 8 in8 Ω

6,8 Ω50 WRMS

100 W90 dB 1W / 1m @ ZN

30 - 6.000 Hz15 / 40 l 0,5 / 1,4 ft3

25,4 mm 1 in5,9 N/A

0,021 kg14 mm6 mm

21 mm

Resonant frequency, fsD.C. Voice coil resistance, ReMechanical Quality Factor, QmsElectrical Quality Factor, QesTotal Quality Factor, QtsEquivalent Air Volume to Cms, VasMechanical Compliance, CmsMechanical Resistance, RmsEfficiency, η0 Effective Surface Area, Sd Maximum Displacement, Xmax 4

Displacement Volume, VdVoice Coil Inductance, Le

52 Hz5,5 Ω

5,51,10,9

29,6 l 438 µm / N

1,3 kg / s0,36 %

0,022 m2

5,7 mm110 cm3

0,8 mH

BF-8RLOW 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]