SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer

SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer

SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer

The SB Acoustics SB12PAC25-4 is a 4 inch mid-range woofer with an aluminium cone. The SB12PAC25-4 uses a light-weight copper coated aluminium wire voice coil to create a responsive mid-range woofer.

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SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer

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Product description

Vented reinforced plastic chassis

Anodized aluminum cone

Low damping rubber surround

Large vented motor system

Long stroke linear suspension

Light-weight CCAW voice coil

Non-conducting fiberglass coil former

Non-resonant long life lead wires

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Product details

SB Acoustics SB12PAC25-4 4” Aluminium Mid-range Woofer

The SB Acoustics SB12PAC25-4 is a 4 inch mid-range woofer with an aluminium cone. The SB12PAC25-4 uses a light-weight copper coated aluminium wire voice coil to create a responsive mid-range woofer. It also has a low Fs frequency which should allow for a low crossover point in a 3-way system. 

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Specifications

Article numberSB12PAC25-4
Woofer TypeMid-range woofer
Nominal Diameter4''
Power Handling (RMS)30 Watts
Impedance (Z)4 Ohms
Sensitivity (SPL at 1m / 2.83V)87 dB
Voice Coil Diameter25.4 mm
Magnet Weight400 g
DC Resistance (Re)3.1 Ohms
Voice Coil Inductance (Le)0.24 mH
Resonant Frequency (Fs)52.5 Hz
Mechanical Q (Qms)5.0
Electromagnetic Q (Qes)0.33
Total Q (Qts)0.31
Diaphragm Mass Inc. Airload (Mms)6.1 g
Mechanical Compliance of Suspension (Cms)1.5 mm/N
Surface Area of Cone (Sd)50 cm2
BL Product (BL)4.35 Tm
Maximum Linear Excursion (Xmax)5 mm
Driver's Mechanical Losses (Rms)0.4 kg/s
Cone / Diaphragm MaterialAluminum
Voice Coil Wire Materialcopper coated alumimium
Voice Coil FormerFibre glass
Basket / Frame MaterialPlastic
Magnet MaterialFerrite
Overall Outside Diameter108,9 mm
Overall Depth69,3 mm
Baffle Cutout Diameter102 mm
# Mounting Holes4

Special Features:

  • Vented reinforced plastic chassis
  • Anodised aluminium cone
  • Low damping rubber surround
  • Large vented motor system
  • Long stroke linear suspension
  • Light weight CCAW voice coil
  • Non-conducting fibreglass coil former
  • Non-resonant long life lead wires
SB12PAC25-4
4 Items

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