Fane Crescendo 18B (1 Viewer)

[david_shy]

Hello

I've been reading this forum with interst and wonder if any of you can offer me some advice..

I do not currently have a dedicated subwoofer for my system, and am using a Folded Horn PA bin with a Fane Crescendo 18B Driver connected to my sub-out via a power amp as a temporary solution

Results have been OK, but I've been thinking about building a subwoofer as a project

My question is, would this Fane driver be suitable for a subwoofer, or should I look elsewhere? (I actually have two of them...)

The specs of the driver are as follows:

Resonant Frequency (fs) 30Hz
Impedance (Re) 5.6WOhms
Electromagnetic Q (Qes) 0.285
Mechanical Q (Qms) 2.34
Total Q (Qts) 0.254
Compliance Equivalent Volume (Vas) 363 liters
Mechanical Compliance of Susp ension (Cms) 0.208mm/N
BL Product (BL) 22.4 T-M
Diaphragm Mass inc. Airload (Mms) 135 grams
Voice Coil Overhang (Xmax) 4.7mm
Surface Area of Cone (Sd) 112cm
Impedance at Resonance (Zmax) 56Ohms

Any assistance would be appreciated. i have some experience with speaker design, but subwoofers are new to me

 

[Seth_L]

It does not have enough cone travel for a sub.

 

[Chris Brock]

those parameteres seem very odd to me, a Bl of 22.4 yet an xmax of only 4.7mm?

 

[Allen Ross]

with that xmax, I am guessing they will be better in a folded horn set up, if i remember correctly if the driver has a high EPB then it will do wonders in a folded horn, granted you won't be hitting 20 hz but it will have one hell of an impact at 35-40.