I have 2 mint condition 9/10 15 inch dual 4 ohms RE Audio (SE series) woofers for sale. Asking $265 shipped because they are heavy. Specifications are listed below.
15"
Electrical Q Value -Qes: 0.55
Mechanical Q Value -Qms: 4.3
Total Speaker Q Value -Qts: 0.49
Free Air Resonance -Fs: 22 Hz
Equivalent Compliance -Vas: 209 liters
One-Way, Linear Excursion -Xmax: 18 mm
Efficiency -SPL 1W/1m: 88 dB SPL
Effective Piston Area -Sd: 810 cm^2
DC Resistance -Re: 2.8 ohm
Nominal Impedance -Znom: Dual 2/4 ohm
Thermal Power Handling -Pe: 600 watts
15"
Electrical Q Value -Qes: 0.55
Mechanical Q Value -Qms: 4.3
Total Speaker Q Value -Qts: 0.49
Free Air Resonance -Fs: 22 Hz
Equivalent Compliance -Vas: 209 liters
One-Way, Linear Excursion -Xmax: 18 mm
Efficiency -SPL 1W/1m: 88 dB SPL
Effective Piston Area -Sd: 810 cm^2
DC Resistance -Re: 2.8 ohm
Nominal Impedance -Znom: Dual 2/4 ohm
Thermal Power Handling -Pe: 600 watts