Help! With designing a small sub... (1 Viewer)

[Dean-P]

I'm trying to design a new small sub using inexpensive drivers, namely:

Dayton shielded 8" Quattro 8"
TB W8-740C
and the Audax AP170Z0

I want it to be as small as can be for the WAF. Although it looks like the TB would be the smallest, I was told by CSS in Canada that a 30l vented with 2-2" by 13" long would be best,that is not what shows up on WinISD...I got an 11l with 2" by 14" long. So what gives here??

Looks like the Dayton 8" shielded would be the way to go cost versus size.
What do you guys think?

Here is a photo of my plot Small subs
The Quattro is the purple colour and the Dayton is blue...

 

[AllanRW]

W8 depends on boost but the cabinet size I designed for the W8 with the 2 2" ports is what I showed at the last DIY I held.

I have doen the songle vent and you will end up with a nice STACK
The twin port is that will work.
No issue of port noise or wrong tuning.
The Quatro not a 8" sub it is a 8" driver.

Al

 

[Dean-P]

AllanRW:
Thanks for the reply,
I realize that you designed the 30L vented but what I am asking is why WinISD shows it to be better in an 11L single vented(2" by 13.97" long) than in the 30L double vented?
My goal is to build a small foot print sub using the
TB W8-740c, but I am confused by WinISD versus what you designed.
Do you have a small footprint design that is good to go? :wink:



I am aware of this and did not state that it was.

Maybe I have the specs wrong in WinISD but I checked them before at the TB website...

Any help will be greatly appreciated!
Thanks Dean

 

[AllanRW]

OK as a fact do not use the specs from TB on this driver.
Close but not correct.
I know this as I was in Nuera when we placed the order for them and I have the TB tested data sheets with the specs TB tested on 12 drivers before they sent the order to Nuera.

As well I have information and tests from Bob Koonce and Bob Wright on tests they did on the TB,MCM,MA 8" drivers.

So what I did took all 12 spec data sheets from TB,averaged them outand got the same results with that as Mr Koonce did when he forwarded the test data to me as well.

I am on remote and do not have the specs on this computer I will post them in the AM Ok.
Then you will see for yourself.

In general most OEM specs are close toa point but some are far off.

Al

 

[Dean-P]

Thank you very MUCH :star:

 

[AllanRW]

Dean just noticed Alberta boy?
Calgary then Black Diamond just south of Calgary.
Been out here for 16 years.

 

[AllanRW]

Ok here you go all the TB data sheets i will scan for the W8.
I will email to those who want a larger copy.

Al

 

[Dean-P]

Thanks AllenRW!

BTW Been here for 3 yrs: in the military fixing cra..y cf-18s...

I'll try the new specs later tonite and see how it goes!