Pulse CFR90SQ Fullrange SQ Speaker

Technical Specifications:
Full Range CFR9OSQ Sound Quality
Diameter 89mm – 19mm voice coil diameter on Composite Fiber support,
Very light pressed cellulose cone,
Very light pressed cellulose dust cover,
covers the entire frequency range between 100Hz and 22,000Hz (+/-1dB) in a single speaker,
volume-controlled and aperiodic rear chamber,
extreme linearity in frequency response,
Linear Response in a sealed box from 180 Hz and up,
already with 0.5 Liters completely filled with Dacron,
bearable power 60 WRms,
FS 153 Hz
QTs 0.62 
Vas 0.59

Price is for 1 woofer