This project is in progress

[fung]

I'm going to use the C95-T6 and C23 in this new project, piano black, white and red(Ferrari). Now I'm working on the x-over.

Same idea as the big one, the vent is point downward, air current will lead and twist to horizontal direction by base. Of course it will be setup a backward super tweeter too. An 12 mm aluminium plank will fix on the 36 mm thick front baffle, the whole enclosure wall are 36 mm too. Inside the box are partitioned into a lot of little space like "Matrix", wool damping, silver inner connection...

[fung]

Another visual angle.

[fung]

Side elevation.

[xstephanx]

just a noob here but that space looks a bit thin for any vent over like 1" in diameter. unless youre planning on loading the vent somehow.

something tells me youre going to shoot down my argument with numbers...but gimme a break its not like i can calculate the surface area of the opening without dimensions.

[paulspencer]

Looks great. Will be very interested to see the final result.

If the vent is down firing then it will not be possible to simulate the tuning as the air will be impeded, resulting in a shifted tuning and probably aerodynamic problems - chuffing that would not otherwise occur.

Why not put the vent in the front or rear?

[fung]

Originally posted by xstephanx
just a noob here but that space looks a bit thin for any vent over like 1" in diameter. unless youre planning on loading the vent somehow.

something tells me youre going to shoot down my argument with numbers...but gimme a break its not like i can calculate the surface area of the opening without dimensions.

The thin "vent" you mentioned is a aluminium post intended setup to support the weight of the cabinet rear part. The real vent is at the bottom of the main bin like attachment.

[paulspencer]

As I mentioned, it's still very constrained and a potential problem. You won't know if it is tuned correctly until you build and test it.

[fung]

Originally posted by paulspencer
As I mentioned, it's still very constrained and a potential problem. You won't know if it is tuned correctly until you build and test it.

Answer: I know what you're concerning. In my opinion, the gap between bin and base is still a part of the vent, but the rebound of the current from base where opposite to the port(I put it in easy way)will affect the normal reflecting current from the port like you said. To avoid that occur, we must lead the air flow in and out from port to gap very smooth, I setup a cone like the attached photo. I'd measured the impedance, plot is so perfect like textbook, the most important is exactly like what I expected. Why I design the downward reflection? It's a long story, briefly, in my view this sort of structure is more easy to work like a vented box, more easy to adapt the environment of audition, more easy to reproduce a true alike and no directional deep bass.

[fung]

More attachments.

[fung]

Sorry, check this out.