Dual Chamber Reflex Subwoofer Revisited

[anatech]

Hi Hess,
Looks good. Is there a reason why you don't drop down to an 8" woofer for the upper bass? That would be much faster.

-Chris

[simon5]

Faster? Let me laugh a bit

This is only for a subwoofer, it will be perfect with a 12. Deeper bass, louder, less distortion, and same fastness...

He ditched the idea with two woofers.

[Hezz]

Hi Chris,

I originally had intended to build the cabinet taller with the 12 inch sub on the bottom and an eight inch up high in a different type of loading.

I guess it seemed too complicated when I first started approaching the cabinet design but there is no reason why I could not do it. At this point if I do decide to build the upper sub cabinet I will build the upper sub in a seperate cabinet that sits on top and has some kind of decoupling barrier.

The only thing is that the upper woofer would be firing into the back of a keyboard rack and I am afraid that it might excite vibrations so until that thing is gone I am going to see if I am happy with just the 12 inch driver.

I am now also going to build some new front full range drivers to replace my front 6.5 inch cheap two-ways. They will have an eight inch vented woofer and a 5.25 midbass as opposed to the current sealed units. The fronts actually sound quite good for how cheap the speakers were. But they don't reach down very far or move much air.

I think the combination with the new front speakers will be sufficient. Because I can have the HT receiver send the sub effects channel to the front speakers also if I want. I will experiment and see if the upper sub is warranted.

[simon5]

I think it will be enough with your mains if you use 8" in them.
I agree with you.

[Hezz]

Here is my design for the new front speakers. THey are a compact 34 inch high speaker. So they will fit underneath the pull down ceiling mounted screen.

I think they will significantly outperform the old speakers.