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Aurum Cantus AC200/50C2C 8" Woofer
Does it have a progressive spider?
I intend to use them in vented enclosures. Also, how many are in the package?
It is difficult to tell by the picture. most likely the spider is linear because it was not stated, usually progressive spiders are used in auto sound systems to limit the excursions when the voice coil travels out to the edge of the magnet assembly. because space is limited in auto applications and the speaker pistons must have long excursions for high spl this usually lifts the voice coil out of the magnetic gap thus limiting the damping factor from the amplifier. so with linear spiders the excursion is mostly controlled by the damping factor and progressive spiders get progressively stiff at the inner or outer limits.
Date published: 2012-03-24
Best box for full low extension?
Nice response curve.
I would run it in a 1.5 to 2 cubic foot vented enclosure tuned to 35hz which gives you an f3 of 42 and 37 hz respectively. A 4" diameter port or two 2.5" diameter ports are needed to keep port velocity low enough.4" diameter port:1.5 cuft, 35hz = 15" long2 cuft, 35hz = 10" longtwo 2.5" diameter ports:1.5 cuft, 35hz = 12" long2 cuft, 35hz = 9" longOr if a sealed enclosure is desired 0.5 to 1.0 cubic feet which give you an f3 of about 70hz with the larger enclosure having a more shallow rolloff below that.
Date published: 2013-02-10
Does this have a rubber surround?
there does seem to be any details about that here or the net. this speaker looks really good for my application, but the absence of a rubber surround would be a deal breaker.
Yes, the surround on this woofer is rubber.
Date published: 2011-11-21
Will two of these work in one sealed enclosure with a volume of 0.73 Cu. Ft.?
The interior dimensions of the enclosure are 22.75" H x 8" W x 7" D, or 0.73 Cu. Ft. This is actually a sealed enclosure within a much larger ported enclosure (see picture). The current setup has all JBL Pro Drivers and the none of them are appropriate for the tuning of the enclosures. Being a novice, I wanted to find out if two of these 8" Aurum Cantus woofer drivers are appropriate for this sized enclosure.I will also be replacing the 15" JBL's with something else. Any suggestions would be welcome. The net volume in the main, ported enclosures is about 13.4 Cu. Ft. - Int. Dim. 66.5" H x 16.5" W x 22.5" D less ext. dim. 23.25" H x 9" W x 7.5" D.
That is a reasonbly acceptable size for two, a little on the small side but still usable. Qtc of .972, F3 of 80Hz.Cannot suggest something for the larger enclosure without knowing tuning frequency or port size/length.
Date published: 2013-07-08