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SB Acoustics

SB Acoustics - 6.5" BAC Coaxial - SB17BAC35-8-COAX

SB Acoustics - 6.5" BAC Coaxial - SB17BAC35-8-COAX

$274.95 AUD
$274.95 AUD
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Description

A coaxial driver from SB Acoustics, with a soft dome neodymium tweeter mounted at the centre of a geometrically reinforced aluminium woofer cone for a point-source layout. It has a low-profile rubber surround for minimum high-frequency diffraction and a vented cast aluminium chassis.

Features

  • Geometrically reinforced aluminium cone for optimum piston operation and reduced break-up
  • Low profile rubber surround for minimum high frequency diffraction
  • Soft dome tweeter with neodymium motor, copper cap and rear chamber
  • Excellent high frequency directivity control
  • Extended copper sleeve on pole piece for low inductance and low distortion
  • Light weight CCAW voice coil on fibreglass former
  • Vented cast aluminium chassis
  • Long life silver lead wires

Specifications

General

Driver type Coaxial
Nominal size 6.5"
Nominal impedance 8Ω
Power handling (RMS) 45 W
Sensitivity 88 dB

Thiele/Small parameters

Resonant frequency (Fs) 35.2 Hz
DC resistance (Re) 5.2 Ω
Voice coil inductance (Le) 0.13 mH
Mechanical Q (Qms) 4.1
Electrical Q (Qes) 0.36
Total Q (Qts) 0.33
Equivalent volume (Vas) 33.1 L
Compliance (Cms) 2 mm/N
Moving mass (Mms) 10.2 g
Mechanical resistance (Rms) 0.55 kg/s
Force factor (Bl) 5.7 T·m
Effective piston area (Sd) 108 cm²
Linear excursion (Xmax, one-way) 3.1 mm
Displacement volume (Vd) 33.48 cm³
Efficiency bandwidth product (EBP) 97.78

Motor

Voice coil height 11.2 mm
Air gap height 5 mm
Magnetic flux density 0.91 T
Magnet weight 0.54 kg

Tweeter (coaxial)

Nominal impedance 4Ω
DC resistance (Re) 3.6 Ω
Resonant frequency (Fs) 1,350 Hz
Sensitivity 93 dB
Power handling (RMS) 30 W
Voice coil diameter 20.4 mm
Voice coil height 1.7 mm
Air gap height 2 mm
Magnetic flux density 1.02 T
Magnet weight 0.0145 kg
Weight 0.0557 kg

Mounting

Voice coil diameter 35.5 mm
Weight 1.63 kg

Materials

Cone Aluminium
  • Xmax is quoted one-way (peak), not peak-to-peak.
  • Sensitivity measured at 2.83V/1m.
  • On this coaxial, the Thiele/Small parameters are the woofer's; the tweeter's are listed separately.

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