Boston Acoustics 4 1/2" Woofer (pr.) Shielded with 1" Voice Coil 60 Watts RMS Sold in pairs, you will get two woofers.

Boston Acoustics 4 1/2" Woofer, Fully Shielded Design with 1" Voice Coil

• Home use, perfect of any Dual Woofer 125 watt speaker project, being fully shielded, they are designed to the highest home theater standards.
• Mobile use, small and shallow, Great for doors, kick panels, etc.... Great for a woofer array to create a sound that surounds your ears.
• With a Sound Pressure Level of 96 dB, these are very healthy little woofers, resulting in a higher volume output with lower wattage
• Clean sound not muddy or muted
• Buy one (1) and you get a pair of woofers
  
  Specifications
  
• 1" or 25mm voice coil
• 4 ohms
• SPL 96dB at 1 watt at 1 meter
• Response 55Hz to 7KHz.
• Magnet type standard Ferrite
• 60 watts free air power rating
  
  Q and Vas Test results
• Revc =2.6820 ohms
• Fms = 68.2445 Hz.
• Zmax = 26.6477 ohms
• Qms = 2.7836
• Qes = 0.3862
• Qts = 0.3391
• Le = 0.4070 mH at 1kHz.
• XLe = 4.3870 impedance at 1 kHz
• Vas =7.8691 L ( 0.2779 ft^3)
• BL = 2645.9380 N/A
• Mms = 6.4535 g
• Cms = 842.766 uM/N
• Kms = 1186.5987 N/M
• Rms = 0.9672 R mechanical
  
  Mounting
  
• 4.5" square mounting flange
• 4" mounting hole
• 2 5/8" ( 2.625") mounting depth
• Four 3/16" screw holes,3 5/16" (3.34") center to center on the flange, or 4 3/4" (4.750") center to center on the diagonal
  
  Misc. Information
  
• Shipping weight is 5 pound
• Condition is new unused bulk factory packaged (NOS)
  
• You can wire the pair in series to get a common 8 ohms for Home Applications