All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
SB12PFCR25-4-COAX
The SB Acoustics SB12PFCR-4-COAX is a 2 way coaxial loudspeaker drive unit featuring a 4" paper composite cone midwoofer with a 1" centre mounted soft dome tweeter.
Crossover designs can be found within the SB Acoustics Technical Notes webpage.
The tweeter is available as a spare part: SB14ST-C000-4 , it can be adapted to repair various other coaxial speakers that feature a 1" pole piece.
Resonant frequency (fs) | 58 Hz | Nominal impedance (Zn) | 4 Ω |
Mechanical Q factor (Qms) | 4.07 | DC resistance (Re) | 3.1 Ω |
Electrical Q factor (Qes) | 0.36 |
Max power handling | 30 W |
Total Q factor (Qts) | 0.33 |
Sensitivity (2.83V/1m) |
87dB |
Equivalent volume (Vas) | 4.8L | Chassis diameter |
122mm |
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