Purifi Audio PTT6.5PR-NA2-03

The PTT6.5PR-NA2-03 from Purifi Audio is a 6.5" (16.5 cm) passive diaphragm with a vibroacoustically optimized cone and a dust cap made of black anodized aluminum. Equipped with Purifi Neutral Surround technology, this passive radiator eliminates Surround Radiation Distortion (SRD). It offers a unilateral peak excursion of 15 mm with constant Sd and has an M6 threaded ground plug for additional mass. Designed and manufactured in Denmark, the PTT6.5PR-NA2-03 is characterized by its high quality and precision.

• Vibroacoustically optimized cone and dust cap made of black anodized aluminum
  
• PURIFI Neutral Surround eliminates Surround Radiation Distortion (SRD)
  
• 15 mm one-sided tip deflection with constant Sd
  
• Ground plug with M6 thread for additional mass
  
• Developed and manufactured in Denmark

• Type: Passive radiator
  
• Size: 6.5 inches
  
• Cone material: Black anodized aluminum
  
• Maximum mechanical deflection, Xmax ±15.0 mm
  
• Dimensions: Plug thread size: M6
  
• Thiele/Small parameters
  
• resonance frequency, fs: 19 Hz
  
• Mechanical Q-factor, Qms: 13.1
  
• Equivalent volume, Vas: 20.5 l
  
• Effective piston area, Sd 132.7 cm2
  
• Effective piston diameter, D 13.0 cm
  
• Mechanical resistance, Rms 0.78 kg/s
  
• Moving mass, Mms 85.0 g
  
• Suspension conformity, Cms 0.82 mm/N
  
• Physical dimensions
  
• Diameter of the basket 176 mm
  
• diameter of the cutout 148 mm
  
• diameter of the mounting hole pattern 166 mm
  
• mounting hole diameter 5.2 mm
  
• Height of the outer flange 3.6 mm
  
• installation depth 49.0 mm
  
• Weight 0.25 kg