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BEYMA 12BR70

BEYMA 12BR70

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BEYMA 12BR70 — 12" / 12 inch · Full-Range Driver · Full-Range / Wideband
125 W AES - 93 dB - 35 – 4000 Hz - 8 Ω
Part no.: 42A-CHS-BB-BEY-0001

123.00 € 123.0 EUR 123.00 €

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  • Manufacturer
  • Category
  • Series
  • Impedance (Ω)
  • Power handling (W)
  • Sensitivity (dB)
  • Frequency from (Hz)
  • Frequency to (Hz)
  • Diameter
  • Voice coil (inch)
  • Mounting depth (mm)
  • Weight (kg)
  • Re (Ω)
  • Le (mH)
  • Fs (Hz)
  • Qms
  • Qes
  • Qts
  • Vas (l)
  • Xmax (mm)
  • Vd (cm³)
  • BL (Tm)
  • Mms (kg)
  • Sd (m²)

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BEYMA 12BR70 — 12" · Full-Range Driver

125 W AES · 93 dB Sensitivity · Frequency range 35 Hz – 4000 Hz

Technical data

  • Diameter: 12 "
  • Voice coil: 2 "
  • Power handling: 125 W AES
  • Sensitivity: 93 dB
  • Impedance: 8 Ω
  • Weight: 3.6 kg
  • Mounting depth: 134 mm
  • Frequency range: 35 – 4000 Hz

Series: BR · Part no.: 42A-CHS-BB-BEY-0001

Thiele-Small parameters

Nominal impedance8 Ω
Resonance frequency fs31 Hz
Total Q Qts0.5
Electrical Q Qes0.56
Mechanical Q Qms4.44
Equivalent volume Vas142.0 l
Moving mass Mms74.0 g
Cone area Sd540 cm²
Linear excursion Xmax8 mm
Verschiebevolumen Vd340 cm³
Force factor BL12.1 Tm
DC resistance Re5.6 Ω
Voice coil inductance Le0.8 mH

Enclosure suggestion

The EBP of 55 is in the intermediate range — either works; sealed plays tighter, bass reflex deeper and louder. EBP = fs / Qes = 31 / 0.56

Sealed (Qtc 0.707)

Enclosure volume Vb
142.1 l
System resonance Fc
44 Hz
Cut-off frequency F3
44 Hz

Bass reflex (QB3 after Small)

Enclosure volume Vb
288.3 l
Tuning frequency Fb
25 Hz
Cut-off frequency F3
23 Hz

Vb is the required net internal volume, Fb the tuning frequency of the reflex port and F3 the frequency at which the level has dropped by 3 dB. Calculated approximation after Small. A starting point for simulation, not a finished build plan.

Specifications

Allgemein
Manufacturer BEYMA
Category Full Range
Series BR
Impedance (Ω) 8
Power handling (W) 125
Sensitivity (dB) 93
Frequency from (Hz) 35
Frequency to (Hz) 4000
Abmessungen & Korb
Diameter 12
Voice coil (inch) 2
Mounting depth (mm) 134
Weight (kg) 3.6
Thiele-Small-Parameter
Re (Ω) 5.6
Le (mH) 0.8
Fs (Hz) 31
Qms 4.44
Qes 0.56
Qts 0.5
Vas (l) 142
Xmax (mm) 8
Vd (cm³) 340
BL (Tm) 12.1
Mms (kg) 0.074
Sd (m²) 0.054