Beyma 12 BR 70 - Paper buy at hifisound.de

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12BR70

This 12" bass loudspeaker has been specifically designed to deliver exceptional low frequency reproduction, with high sensitivity and extremely low distortion. It incorporates a curvilinear cone attached to a rubber surround, in order to provide suspension stability and to allow maximum excursion linearity. By combining a powerful magnet construction with a cast aluminium basket, the 12BR70 achieves high power capacity, and consequently, contributes to reduce the thermal power compression.

Key features:

125 WRMS power handling
Sensitivity: 93 dB @ 1 W @ 1 m
2” copper voice coil
Extended controlled displacement: Xmax ± 8 mm
Low resonance for low frequency extension
Flat frequency response and low distortion
Rubber surround
Die cast aluminium basket
Ferrite magnet

Short data

Usage as	Woofer
Power Handling	125 Watt
Impedance	8 Ohm

Frequency from	25 Hz
Max. Frequency	4 kHz
Sound pressure	93 dB

Chassis-data

Overall dimensions	312 mm
Baffle cutout	277.5 mm
Depth (Total)	126 mm
Frame Material	Aluminium diecast
Membrane Type	Cone
Membrane Surround	Rubber
Membrane Material	Paper

Voice coil Ø	52 mm
Voice coil height	19 mm
Voice coil material	Aluminium
Air gap height	7 mm
Magnet Ø	134 mm
Magnet-weight	2750 g

Thiele-Small-Parameter

Resonance fs	fs: 35 Hz
Mechanical Q	Qms: 4.44
Electrical Q	Qes: 0.56
Total Q	Qts: 0.50
Equivalent Air-Volumen	Vas: 142 Liter
DC-Resistance	Re: 5.6 Ohm
Coil Inductance	Le: 0.85 mH

Mech. Compliance	Cms: 0.354 mm/N
Moving Mass	Mms: 74 g
mech. Resistance	Rms: 3.3 kg/s-¹
Max. Excursion +/-	Xmax: 8 mm
BL Product	Bl: 12.1 N/A
Membrane Area	Sd: 540 cm²
Sound pressure	dB: 93 SPL
Efficiency	Nref: 0.76 %

Frequency, Harmonic Distortion

Impedance

Technical Dimensions

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