OK, what about this one for a "budget" IB 15 inch driver?

[svejkovat]

Knowing little beyond the recommendation for decent xmax and QTS in the 70 range I noticed this one as a possible budget 15 inch driver. 

www.parts-express.com/pyle-plbw154-blue-wave-15-woofer--267-087

Pyle does not list xmax in the ts parameters.  Who knows why?   Is it that bad?  I sat on telephone customer service for twenty five  minutes and just gave up.  There is an 18 inch version of the same woofer category that also neglects to give xmax spec.   But if if the QTS is to  be believed it looks like a possibility for a "budget" IB driver.  No?

[ThomasW]

From the review section on the PE website

For those that are interested, according to Pyle the Xmax is around 12-14mm

[svejkovat]

Eh?

www.seismicaudiospeakers.com/18-Raw-Subwoofer-Driver-Speaker-18-p/new%20madrid%2018.htm

Another company that seems spare with it's specs.  Generally iffy? Had to email them and a week later they returned with

Hi,
OK.
Our manufacturer supplied these numbers for the products that you requested: (XMAX only) Quake 15 sub XMAX：3.5mm Quake 18 XMAX: 5.5mm Quake 18 sub XMAX: 6.4mm San Andreas XMAX: 6.5mm New Madrid XMAX: 13mm.

 I hope this helps.

[ThomasW]

Nov 20, 2013 18:35:23 GMT -7 svejkovat said:

Eh?

Not suitable for your needs

There are thousands of drivers out there that won't work for an IB and very few that will.

[svejkovat]

Thank you Thomas.  I am learning to appreciate that from here and a few other resources on the web.   What throws me a bit is that often a few of these TS parameters come within very close proximity to the PE 15" dedicated IB sub.  That driver seems to have a pretty strong following. 

[ThomasW]

Nov 21, 2013 12:07:58 GMT -7 svejkovat said:

What throws me a bit is that often a few of these TS parameters come within very close proximity to the PE 15" dedicated IB sub.  That driver seems to have a pretty strong following. 

It used to be a state of the art driver. But it's a decades old design (technology) and the last samples I saw the build quality was less than inspiring.