I need the internal air volume required for the woofer only as I am building new boxes for my existing 250Ti's. Making 3 boxes--woofer only, lower mid only,mid & tweeter only. Pete:)
Printable View
I need the internal air volume required for the woofer only as I am building new boxes for my existing 250Ti's. Making 3 boxes--woofer only, lower mid only,mid & tweeter only. Pete:)
- That information does already exist here , somewhere .Quote:
I need the internal air volume required for the woofer only as I am building new boxes for my existing 250Ti's.
- If I remember correctly the woofers "net" working volume ( not air ) was just over 4 cu ft .
- The fellow who posted it ( Giskard ), no longer posts here. Meaning, I think you'll need to test out your searching capabilities using this sites' builtin search engine.
Good Luck ! ( Okay, I relented )
EDIT #1 : Here's some pertinent info
EDIT #2 : Here's the info you are afterQuote:
Originally Posted by Giskard : BTW, has anyone noticed the lower M9500 volume and tuning is quite similar to the L250 and 250Ti?
"115 litres (4.1 cu ft) 28 Hz tuning (lower LF)"
"two 2.75" ID ports each having an 8.375" duct"
The port/duct on the 240Ti and 250Ti is 4.125" ID x 5.25".
The 240Ti is spec'd at 3.5 cubic feet and the 250Ti is spec'd at 4.2 cubic feet.
Using the old JBL tuning formula Fb comes up as ~ 35 Hz for the 240Ti, ~ 32 Hz for the 250Ti (actual spec was 28 Hz), ~ 26 Hz for the M9500 lower volume, and ~ 32 Hz for the M9500 upper volume. These mathematical tunings don't take into account any system losses.
Anyway... yet another case for tuning your own DIY boxes (complete with their own personal loses) for yourself.
*Quote:
Giskard ( in reply to Gerard )
104H = 80 cubic inches
108H = 0.25 cubic feet
LE14H-1 = 4.2 cubic feet
hello
have you been there ?
http://www.audioheritage.org/vbullet...light=nembutal
there is a xpl250 with separate woofer ...
Gerard