The titanium series by Ground Zero is the next in line after the iridium series. It brings several improvements over the iridium series such as higher speaker efficiency, more advanced crossovers, and better overall sound quality.
 
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2-way coaxial speaker system
	
HQPP cone with 3D structure
	
Rubber surround
	
Euro-DIN basket
	
Resonance free steel basket
	
High efficient 3 ohms version
	
13 mm / 0.51″ Mylar tweeter
	
Ferrite motor
	
6 dB/oct high pass filter
	
Incl. protection grill
 
Specifications:
	
		
			
Model
			
			
2-way coaxial speakers
			
		
		
			
Diameter
			
			
165 mm / 6.50"
			
		
		
			
Power Handling (RMS/max.)
			
			
90 / 130 Watts
			
		
		
			
Impedance
			
			
3 ohms
			
		
		
			
Efficiency
			
			
91 dB
			
		
		
			
Frequency Response
			
			
50 Hz – 22 kHz
			
		
		
			
Tweeter
			
			
13 mm / 0.51" Mylar tweeter
			
		
		
			
Membran Layout
			
			
HQPP cone with 3D structure
			
		
		
			
Mounting Ø
			
			
143.5 mm / 5.65"
			
		
		
			
Mounting Depth
			
			
67 mm / 2.64"