Random 12" woofer in 100 liter cabinet

[Klimon]

I'm aware of the invention of TS parameters and advanced simulation software.... but:

What can I expect from a 12" woofer (removed from Marantz 7g imperial speakers) in a 100 liter (=25 gallons) closed cabinet? Any rough guesses about low-end response and flatness of FR in f3-100hz region? I read that the original cabs were BR tuned at 80hz with about 60 liter (15gallons) internal volume. With some stuffing I could probably reach about 130l with my cabinets.

I have the 100l cabs lying around so it would be easy if they match up well with the 12" marantz drivers....

Would be nice to get a (rough) idea what to expect, there's still some work to do on the cabinets.

Thanks!!

Simon

 

[hifiger]

The xmax and the fs of the driver would help.

here is a quick response plot i made with unibox for a 12 inch driver with 10mm of xmax, fs of 30hz, Re 4ohm svc, Le 1.3mh, with 100watts in a 100L, heavily stuffed enclosure:

http://img219.imageshack.us/img219/5361/simulatedresponsekx6.gif

 

[Klimon]

Thanks, that gives a rough idea. I would have thought a woofer that size in a cabinet that size would be about flat untill 40hz.... We'll see how it goes.

Simon

 

[sreten]

Hi,

Drivers designed to work in 60L reflexed are not going to work in 100L
sealed. Its a 12" so 100L doesn't sound too far off but I think you will
have to reflex it, I'd say at 35 Hz to 45Hz.

/sreten.

 

[tinitus]

I guess you will get more like -12db at 40hz, if you are lucky, and that could very well be the same with BR

They might be designed to be placed in corners or against the wall