how low could the FF85 be crossed

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
picowallspeaker

picowallspeaker

Member
Joined 2007
I wouldn't mind since they would move little volume of air.
Just make some little boxes with many holes in the back ( same as Sd in total)
The speaker would have sufficient damping from internal volume above Fs and below,
the hole(s) makes the speaker see an open box. So the diameter of the hole(s) could
even be chosen for tuning at Fc.
 
picowallspeaker

picowallspeaker

Member
Joined 2007
> the hole(s) makes the speaker see an open box

the hole -one- needs to be acoustically treated; and the box medium density stuffed.
Acoustically treated means a grill or better a cloth - felt would be the optimum- with sufficient space (s) to let the air travel freely.
as the purpose is not to tune in the very strict meaning of the term ( as for find the right dampening of the cone trough TS parameters ) but to dampen...
well...of course Qts would be about 1 when right done :cool:
 
otto88

otto88

Member
Joined 2007
Interesting – so it’s like a sealed box, with the Q lifted to 1 – quite high

What might the resonant frequency be, about the same, as for a sealed box of the same size, with the resonant frequency about the same?

Is there a name or web link for this technique?

Ciao!
 
planet10

planet10

frugal-phile™
Joined 2001
planet10-hifi.com
Paid Member

Attachments

  • FF85wk-sealed.gif
    FF85wk-sealed.gif
    22.3 KB · Views: 74
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom