B2 Audio Reference Series 6.5" 3-Way Component Set w/ 3" Mids & 1" Tweeters

Specifications:

6.5" Mid-woofer:

• Max Power Handling: 100W
• Nominal Impedance: 4-Ohm
• Voice Coil Diameter: 1.2"
• Magnet: Strontium Magnet Structure
• Frequency Response: 50 Hz - 25 KHz

3" Midrange:

• Max Power Handling: 50W
• Nominal Impedance: 5.2-Ohm
• Voice Coil Diameter: 1"
• Magnet: Strontium Magnet Structure
• Frequency Response: 50 Hz - 25 KHz

Tweeter:

• Max Power Handling: 30W
• Nominal Impedance: 4-Ohm
• Voice Coil Diameter: 1"
• Magnet: Neodymium Magnet Structure
• Frequency Response: 50 Hz - 25 KHz

THIELE AND SMALL PARAMETERS:

6.5" Mid-woofer:

• Free Air Resonance (Fs): 55 Hz
• Resistance (Re): 3.6-Ohm
• Mechanical Factor (Qms): 2.68
• Electrical Factor (Qes): 0.50
• Total Factor (Qts): 0.42
• Mechanical Resistance (Rms): 2.45
• Equivalent Volume (Vas): 11.67 L
• L Efficiency: 0.53 %
• Compliance (Cms): 439 um/N
• BL Factor (BL): 6.39 TM
• Moving Mass (Mms): 16.4 g
• Sound Pressure Level (SPL): 89.6 dB
• Le: 0.264 mH

3" Midrange:

• Free Air Resonance (Fs): 159 Hz
• Resistance (Re): 5-Ohm
• Mechanical Factor (Qms): 5.54
• Electrical Factor (Qes): 1.43
• Total Factor (Qts): 1.14
• Mechanical Resistance (Rms): 0.51
• Equivalent Volume (Vas): 0.5 L
• L Efficiency: 0.142 %
• Compliance (Cms): 354 um/N
• BL Factor (BL): 3.2 TM
• Moving Mass (Mms): 2.8 g
• Sound Pressure Level (SPL): 83.6dB
• Le: 0.21

Tweeter:

• Free Air Resonance (Fs): 1250 Hz
• Resistance (Re): 3.9-Ohm
• Mechanical Factor (Qms): 0.76
• Electrical Factor (Qes): 2.43
• Total Factor (Qts): 0.58
• Equivalent Volume (Vas): 0.001 L
• Compliance (Cms): 5.7 um/N
• BL Factor (BL): 6 TM
• Moving Mass (Mms): 2.8 g
• Sound Pressure Level (SPL): 84 dB

MEASUREMENTS

6.5" Mid-Woofer:

• Overall Diameter: 6.39" / 161 mm
• Mounting Diameter: 5.31" / 135 mm
• Overall Depth: 3.2" / 81.2 mm
• Mounting Depth: 2.93" / 74.5 mm

3" Midrange:

• Overall Diameter: 3.6" / 91.4 mm
• Mounting Diameter: 2.6" / 65 mm
• Overall Depth: 1.91" / 48.6 mm
• Mounting Depth: 1.53" / 38.9 mm

Tweeter:

• Overall Diameter: 2.2" / 55.8 mm
• Mounting Diameter: 1.9" / 48.4 mm
• Overall Depth: 1.04" / 26.3 mm
• Mounting Depth: 0.61" / 15.6 mm