some of the Specs for the ancient Foster woofers in my spheres - obtained Fostex USA - can we derive anything extra? - Timbo in Oz

High Efficiency Speaker Asylum

Need speakers that can rock with just one watt? You found da place.

some of the Specs for the ancient Foster woofers in my spheres - obtained Fostex USA - can we derive anything extra?

fw202
8 inch OD frame including the impregnated cloth half-roll-in surround, 8 ohms RE
Fs 25-35hz (c/s)
Flux density is 9,400G and total flux is 116,000 Mx, any use?
Equiv. mass is 17.6 grams
equiv Q is 0.42

sensitivity 97db/w !!!!!?????? I thought that they were only 91db/w and there's nothing on them apart from Z rise Eq and damping R nichrome wire.
Input 45W I think they mean max. sustained
the magnet alone weighs 29 ounces!!!!!
38mm voice coil I know that at least,
BUT no gap height or width, or VC height data, though their excursion is at least 12mm - visually.
see what you can do, eh?

Warmest
Timbo in Oz
The Skyptical Mensurer and Audio Scrounger
'Still not saluting.'
Read about and view system at:
http://www.theanalogdept.com/tim_bailey.htm

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Kimber Kable

Topic - some of the Specs for the ancient Foster woofers in my spheres - obtained Fostex USA - can we derive anything extra? - Timbo in Oz 19:54:21 07/5/06 (0)

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