Zacks CMR130.11 Midrange + Pulse CTW28SQ Sound Quality Tweeters

Technical Specifications:
Midrange
Fyber Glass Cone
Rubber Surround
Steel Basket
Peak power: 300W
RMS power: 150W
Ohm: 4
Voice Coil: 1″(25mm)
Fs: 94.28Hz
dBSPL: 90.17
Vas: 4.75L
Qts: 0.53
Qes: 0.61
Qms: 4.13
B*l: 4.23 T*m

Tweeter
28mm soft silk dome
N57 Neodymium magnet
4 Ohm voice coil in 99.97% pure copper cooled by FerroFluid,
Ergal chassis completely machined from solid with numerical control.
Resonance Frequency: 1.386Hz,
Bearable Power 160WRms,
Efficiency 90dB