Givens
Very small enclosure
Dual passive radiators 555cm^2 each Xmax(mech Pto P)=3.75
Single active driver 555 cm^2 Xmax(mech Pto P)=3.75
Each Passive is exactly like the main driver except the magnet and associated magnet physical structure have been removed.


Being that this box is so small a large amount of weight (1.5lbs) must be added to each of the passives to get the tuned frequency in the proper alignment to get the flattest and deepest response.

What effect would building a small enclosure around the passive Effective Vb=0 and running a larg port (Vd=5

 

Cool

 

Its going to be replacing this(138.6 and a 137.8 db)
and should sent the system north of 145db

 

34 views and only one reply
not a good start

 

concept drawing

 

This is how I was thinking about modeling the enclosure setup however my program (bassbox6) is not powerful enough to do this.

What type of band pass would you call this 8th order quasi loaded series band pass??

 

ouch.... this is in pretty deep.

i haven't looked at sub enclosure calcs in over a year. let me dig into this a bit more, but chances are i won't be able to until next weekend...

s'okay?

 

rap this one around the brain....

passive radiator with a 3.5 inch port no longer then 6"
Passive radiator is free to move and the port will move with the passive since the port is attached to the are where the VC was.

So you would have a moving 3.5inch Vd port only 6"lomg to enforce the high bass and the passive moving to reinforce the low end
granted the passive will not reinforce the low end as well since the coupling with the main chamber has bee reduce since there is now a moving vent in the middle of it.