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Classic 18W/4545-03 7" Woofer
This unit is an improved version of the highly praised 18W/4545-00 midwoofer, where a new aluminum chassis, an updated cone and a new spider as wells as a few other details are introduced.
This unit is an improved version of the highly praised 18W/4545-00 midwoofer, where a new aluminum chassis, an updated cone and a new spider as wells as a few other details are introduced.
Highlights
- Patented Symmetrical Drive Motor Design
- Improved Air Dried Paper/Carbon Fibre Cone
- 42mm Voice Coil w. Aluminum foil
- Low-Loss linear suspension
- Low Damping SBR Rubber Surround
Product details
Scan-Speak Classic 18W/4545-03 7" Woofer
Note: The T/S Parameters specified below are taken from the 18W/4545-00 as more specific T/S Parameters are not available yet.
SI18W454503
Data sheet
- Impedance
- 4 Ohm
- Driver type
- Midwoofer
- Sensitivity
- 90 dB 2.83V/1m
- Frequency range
- 30 - 3000 Hz
- Resonance frequency (fs)
- 35 Hz
- DC resistance (Re)
- 3.4 ohms
- Mechanical Q (Qms)
- 2.49
- Electrical Q at Fs (Qes)
- 0.38
- Total Q factor (Qts)
- 0.33
- Speaker diameter
- 7"
- Power handling
- 160 W
- Effective mechanical mass incl air load (mms)
- 21.6 g
- Effective piston radiating area (Sd)
- 145 cm²
- Force factor (BL)
- 6.6 Tm
- Equivalent volume of compliance (Vas)
- 28.2 L
- Overall diameter
- 6.97"
- Mounting diameter
- 6.22"
This unit is an improved version of the highly praised 18W/4545-00 midwoofer, where a new aluminum chassis, an updated cone and a new spider as wells as a few other details are introduced.