Greggk
10+ year member
An ARMY NCO 24/7
ok so apparently there is 2 different types. the old school
and the new style
on paper they look identical from what I can see, only difference being mounting depth.
here is the old school style stats
Mounting Depth - 4"
Mounting Hole Diameter - 7.125"
Overall Diameter - 8.25"
Bolt Hole Circle - 7.75"
Motor Width - 4.875"
Motor Depth - 1.5"
Basket Depth - 2.5"
Displacement - 0.07 cu. ft.
Electrical Q Value -Qes: 0.38
Mechanical Q Value -Qms: 4.21
Total Speaker Q Value -Qts: 0.34
Free Air Resonance -Fs: 22.8 Hz
Equivalent Compliance -Vas: 27.1 liters
One-Way, Linear Excursion -Xmax: 12 mm
Efficiency -SPL 1W/1m: 81.2 dB SPL
Effective Piston Area -Sd: 195 cm^2
DC Resistance -Re: 3.2 ohm
Nominal Impedance -Znom: Dual 4 ohm
Thermal Power Handling -Pe: 175 W
Force Factor -Bl: 15.4
here is the new versions
Electrical Q Value -Qes: 0.38
Mechanical Q Value -Qms: 4.21
Total Speaker Q Value -Qts: 0.34
Free Air Resonance -Fs: 22.8 Hz
Equivalent Compliance -Vas: 27.1 liters
One-Way, Linear Excursion -Xmax: 12 mm
Efficiency -SPL 1W/1m: 81.2 dB SPL
Effective Piston Area -Sd: 195 cm^2
DC Resistance -Re: 3.2 ohm
Nominal Impedance -Znom: Dual 4 ohm
Thermal Power Handling -Pe: 175 W
Force Factor -Bl: 15.4
Specifications:
Mounting Depth - 4.5"
Mounting Hole Diameter - 7.3"
Overall Diameter - 8.7"
Bolt Hole Circle - 8"
Motor Width - 4.875"
Motor Depth - 1.9"
Basket Depth - 2.4"
Displacement - 0.07 cu. ft.
what is the real scoop? i walked away from a set of the old ones on this site for financial reasons, because i can get the new ones substantially cheaper then they were offered here. was that a mistake? are the old ones superior over the new ones? I am looking to use (2) 8" Re Audio subs in a ported box with a Rockford Fosgate 800A2, which should be no big deal for them, but I m wondering if the new is just as good as the old or better, or worse.... thanks ahead of time
and the new style
on paper they look identical from what I can see, only difference being mounting depth.
here is the old school style stats
Mounting Depth - 4"
Mounting Hole Diameter - 7.125"
Overall Diameter - 8.25"
Bolt Hole Circle - 7.75"
Motor Width - 4.875"
Motor Depth - 1.5"
Basket Depth - 2.5"
Displacement - 0.07 cu. ft.
Electrical Q Value -Qes: 0.38
Mechanical Q Value -Qms: 4.21
Total Speaker Q Value -Qts: 0.34
Free Air Resonance -Fs: 22.8 Hz
Equivalent Compliance -Vas: 27.1 liters
One-Way, Linear Excursion -Xmax: 12 mm
Efficiency -SPL 1W/1m: 81.2 dB SPL
Effective Piston Area -Sd: 195 cm^2
DC Resistance -Re: 3.2 ohm
Nominal Impedance -Znom: Dual 4 ohm
Thermal Power Handling -Pe: 175 W
Force Factor -Bl: 15.4
here is the new versions
Electrical Q Value -Qes: 0.38
Mechanical Q Value -Qms: 4.21
Total Speaker Q Value -Qts: 0.34
Free Air Resonance -Fs: 22.8 Hz
Equivalent Compliance -Vas: 27.1 liters
One-Way, Linear Excursion -Xmax: 12 mm
Efficiency -SPL 1W/1m: 81.2 dB SPL
Effective Piston Area -Sd: 195 cm^2
DC Resistance -Re: 3.2 ohm
Nominal Impedance -Znom: Dual 4 ohm
Thermal Power Handling -Pe: 175 W
Force Factor -Bl: 15.4
Specifications:
Mounting Depth - 4.5"
Mounting Hole Diameter - 7.3"
Overall Diameter - 8.7"
Bolt Hole Circle - 8"
Motor Width - 4.875"
Motor Depth - 1.9"
Basket Depth - 2.4"
Displacement - 0.07 cu. ft.
what is the real scoop? i walked away from a set of the old ones on this site for financial reasons, because i can get the new ones substantially cheaper then they were offered here. was that a mistake? are the old ones superior over the new ones? I am looking to use (2) 8" Re Audio subs in a ported box with a Rockford Fosgate 800A2, which should be no big deal for them, but I m wondering if the new is just as good as the old or better, or worse.... thanks ahead of time
