Supreme ST728

Morel ST 728 Supreme Tweeter, Ø 72mm, 8 ohm

Underhung voice coil
Large Hexatech™ aluminum voice coil
72mm IDR™ Improved Dispersion Recess aluminum face plate
Replaceable Acuflex™ dome / coil assembly
Neodymium flat pancake design magnet
High power handling

General Data
Overall Dimensions DxH 72mm(2.83")x53mm(2.08")
Nominal Power Handling (DIN) P 120W
Transient Power 10ms 1,000W
Sensitivity 2.83V/1M 91dB SPL
Frequency Response See graph
Dome Material Acuflex™ hand coated soft dome
Net Weight Kg 0.21

Electrical Data
Nominal Impedance Z 8 ohms
DC Resistance Re 5.2 ohms
Voice Coil Inductance @ 1KHz LBM 0.05mH
Voice Coil and Magnet Parameters
Voice Coil Diameter DIA 28mm
Voice Coil Height 2.7mm
HE Magnetic Gap Height HE 4.6mm
Max. Linear Excursion X 0.95mm
Voice Coil Former Aluminum
Voice Coil Wire Hexatech™ Aluminum
Number Of Layers 2
Magnet System Type Neodymium Flat Pancake
B Flux Density: B
BL Product: BXL

T-S Parameters
Mechanical Q Factor Qms 0.8
Electrical Q Factor Qes 0.65 
Total Q Factor Qts 0.36 
Moving Mass Mms 0.44 g 
Resonant Frequency Fs 800 Hz 
Effective Piston Area SD 6.0 cm²