Hello. I have two faital 120pr300 8 ohm drivers. I'm going to make some custom cabinet 212. I need to help from you! I allready have some plans for construction. That will be my first custom cabinet.
I'm attaching some plans. (preffer nice look over mobility)
I have done some calculations in WinISD.
Volume 100l
Tuning freq: 55,05hz
Vents: 3 vents, diameter 11.00 cm vent length 20.1 cm
at System input power 300W air velocity 50hz: 16 m/s
Wonder also about:
110l
3 vents: 11.00 diameter 17,53 lengths
I'm doing it right?
I'm attaching some plans. (preffer nice look over mobility)
I have done some calculations in WinISD.
Volume 100l
Tuning freq: 55,05hz
Vents: 3 vents, diameter 11.00 cm vent length 20.1 cm
at System input power 300W air velocity 50hz: 16 m/s
Wonder also about:
110l
3 vents: 11.00 diameter 17,53 lengths
I'm doing it right?
Seem to, though based on published specs the classic 110 L tuned to Fs would be my choice.
Re [3] vents. For 50 Hz Fb, Hornresp calculates a 19 m/sec vent mach at only 150 W with a single 8"/20.31 cm i.d. pipe [324.66 cm^2] x 7.44"/18.9 cm, so question WinISD's 16 m/sec @ 300 W with less total area [3x 11 cm dia. = 285.1 cm^2] AND shorter since multiples of the same area as a single pipe will need to be longer.
GM
Re [3] vents. For 50 Hz Fb, Hornresp calculates a 19 m/sec vent mach at only 150 W with a single 8"/20.31 cm i.d. pipe [324.66 cm^2] x 7.44"/18.9 cm, so question WinISD's 16 m/sec @ 300 W with less total area [3x 11 cm dia. = 285.1 cm^2] AND shorter since multiples of the same area as a single pipe will need to be longer.
GM
Thanks So your suggestion is to use longer vents? Im about to use telescope vents so it will be possible for fine tuning. How much vent lenght / cab depth ratio can be? Its bad if vent is quite long compare to cab depth? Cab is now 35 cm depth. But I can redesign that.
- Status
- Not open for further replies.