Transcript
SM-108 LOW FREQUENCY TRANSDUCER SM Series
www.beyma.com
KEY FEATURES ● ● ● ● ●
300 W program power Sensitivity: 95 dB (1W / 1m) 2” (51,7 mm) copper voice coil with fiber glass former Optimum winding length for increased linear excursion Designed for high power woofer applications
TECHNICAL SPECIFICATIONS Nominal diameter Rated impedance Minimum impedance Power capacity* Program power Sensitivity Frequency range Recom. enclosure vol. Voice coil diameter Bl factor Moving mass Voice coil length Air gap height Xdamage (peak to peak)
DIMENSION DRAWINGS
200 mm
8 in 8Ω 7,5 Ω 150 WAES 300 W 95 dB 1W / 1m @ ZN 70 - 6.000 Hz 10 / 30 l 0,35 / 1,06 ft3 51,7 mm 2 in 14 N/A 0,024 kg 15 mm 7 mm 22 mm
MOUNTING INFORMATION
THIELE-SMALL PARAMETERS** Resonant frequency, fs D.C. Voice coil resistance, Re Mechanical Quality Factor, Qms Electrical Quality Factor, Qes Total Quality Factor, Qts Equivalent Air Volume to Cms, Vas Mechanical Compliance, Cms Mechanical Resistance, Rms Efficiency, η0 Effective Surface Area, Sd Maximum Displacement, Xmax *** Displacement Volume, Vd Voice Coil Inductance, Le @ 1 kHz
71 Hz 6,2 Ω 3,8 0,35 0,32 14,4 l 210 µm / N 2,8 kg / s 1,4 % 0,022 m2 6 mm 132 cm3 0,9 mH
Overall diameter Bolt circle diameter Baffle cutout diameter: - Front mount Depth Net weight Shipping weight
211,5 mm 198,3 mm
8,33 in 7,81 in
179,5 mm 94 mm 3,1 kg 3,25 kg
7,07 in 3,70 in 6,83 lb 7,16 lb
Notes: * The power capacity is determined according to AES2-1984 (r2003) standard. Program power is defined as the transducer’s ability to handle normal music program material. ** 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). *** 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.
SM-108 LOW FREQUENCY TRANSDUCER SM Series LOW & MID FREQUENCY TRANSDUCER
www.beyma.com
[Ω]
FREE AIR IMPEDANCE CURVE
[Hz]
[dB]
FREQUENCY RESPONSE AND DISTORTION
[Hz] Note: On axis frequency response measured with loudspeaker standing on infinite baffle in anechoic chamber, 1W @ 1m
05/15
Polígono Industrial Moncada II ▪ C/. Pont Sec, 1c ▪ 46113 MONCADA - Valencia (Spain) ▪ Tel.: (34) 96 130 13 75 ▪ Fax: (34) 96 130 15 07 ▪ http://www.beyma.com ▪ E-mail:
[email protected] ▪
