Bill Fitzmaurice wrote:
Is there a topic where I can find info on the the different speaker parameters in relation to performance?
Where horns are concerned there is not, outside of highly technical documents. The short answer is that all of the parameters matter, and you have to know how to use horn modeling software to make comparisons. Having 50 years of experience working with horns doesn't hurt either.
So I first need to have horn design skills to select an other then the recommended Eminence driver?
This problem for all outside the USA could imho only be tackeled by you, with a list of posible suitable alternative drivers per design based on specs. And when people report back their experiences like performance, durability etc. this data becomes more and more valuable.
People can look up the prices for those drivers localy and make a choice instead of a total guess, at least that is what this experience of selecting a driver seems to me.
No, you don't need horn design skills to select a driver other than Eminence.
Alternatives are listed in most plans, and if you want to look for other drivers, the most important criteria are there for you to see, and based on that, start searching. So it's not a total guess at all.
Bill mentioned some other manufacturers to explore in your "the box speaker" thread.
To suggest Bill should search for drivers right round the world re suitability would be outside the ethos of what he is doing with his designs plans. If he did, we wouldn't be able to buy them at $15 each. He selects the ideal driver, designs the cab, tests it, revises it if and when necessary, and releases it for us to build. Then he throws in some other driver options, as well as the most significant TS parameters, and we get to build and still save heaps compared to commercial cabs.
Would you try to say to JBL they need to offer you driver options in "x" cab. I don't think you would.
They build the cabs on the same basis. Use design parameters/TS specs for drivers, design the cab, build it, sell it for "X' dollars.
It seems your sticking point is driver purchase cost. It's a simple fact of life that quality drivers, as used in pro sound cabs, can be expensive. Yes, in some countries, they are more expensive than others.
They are like that because the company has to stand by it's product in that it will continue to perform day in day out, without a high rate of failure. Any company that sells cheap drivers that continue to fail will quickly disappear.
By your own admission, Eminence is available to you, but not at a cost you wish to justify buying.
Heck, cabs built on Bill's designs are already cheap compared to commercial equivalents and, at the very minimum, perform at least as well as, if not better than them.
There's a very old saying here in Australia that might be appropriate;
If something promises amazing performance, yet is so cheap, it seems to good to be true, then it probably is...
2 x DR 250 (melded array) with March 2012 plans.
4 x 20" BP102 T39's, 2 x 28" 3012lf loaded underway.
3 x WH8 with melded array.Bunter's Audio and Lighting
"like"s would be most appreciated...