• Product type: High-end tweeter
  
• Series: Plutonium Series
  
• Model: GZPT 28SQ
  
• Diameter: 28 mm / 1.10″
  
• Power handling: 100W RMS / 150W max
  
• Impedance: 4 ohms
  
• Efficiency: 90 dB
  
• Frequency response: 2000 Hz – 30 kHz
  
• Cone / dome: 2-layer coated silk
  
• Motor: Neodymium
  
• Housing: Polished stainless steel
  
• Rear chamber: Damped coupled chamber
  
• Voice coil: High power capable copper voice coil
  
• Terminals: Gold-plated screw terminals
  
• Mounting diameter: 48 mm / 1.89″
  
• Mounting depth: 35 mm / 1.38″
  
• Resonance frequency (Fs): 770 Hz
  
• Country of manufacture: Made in Germany
  
• Packaging: 1 pair

• Double-coated silk dome helps deliver a smooth, refined top end without harshness
  
• Polished stainless steel housing doubles as a tuned rear chamber for better control
  
• Low resonance frequency gives more flexibility in serious active system design
  
• Neodymium motor supports speed, detail, and compact packaging
  
• Built for sound-quality systems where staging and tonal precision matter

• High-end 2-way and 3-way SQ systems
  
• Active and DSP-controlled front stage builds
  
• Users chasing smoother, more realistic high-frequency reproduction
  
• Installations focused on staging, imaging, and tonal refinement
  
• Systems paired with serious midrange or midwoofer components

A tweeter like this makes sense when the goal is refinement, not just more top end. In the right system, it helps bring better focus, smoother detail, and a more believable sense of space to the front stage.