Originally Posted by
Loren42
I think the Fostex looks like a very good mid. However, the 2226 has some issues that I don't understand why you would want to use it with the Fostex.
First, the sensitivity of the 2226 is higher than the mid. That is not a good combination if you intend to use a passive crossover. The mid will not have enough SPL to overcome the higher SPL of the 2226. However, the difference is not huge. Still, not a good match. It is better to have a mid with a higher SPL so that you can pad it down to match the woofer.
Second, the Fs for the Fostex is actually lower than the Fs of the 2226! What made you want a cross over at 700 Hz? Ideally, it would be better to get the low end of a 3-way crossover at or below 400 Hz which is outside the human voice range. I don't think the 2226 buys you anything that you can't get with the Fostex in a good vented enclosure. A 2235H may be a different story, but 2226 is not a good choice, in my opinion.
The other problem is the 2226 is an instrument speaker and generally they do not make a good HiFi woofer, if that is your intent.
Personally, I would not use the 2226 for a HiFi woofer. It's Fs is simply too high and there are much better choices out there that will provide better low end response.
I am not familure with the Beyma CP 21. Isn't that a car speaker? Why would you use a car speaker for home HiFi?
If you haven't already invested in the drivers I would say that there are far, far better choices for HiFi than what you have cited that you should look at. Why not give the Seas Excel line a good look? Not cheap, but excellent drivers nonetheless.
Just what type of enclosure do you have in mind? What are your design goals?
I would back up and start with what it is you want to achieve and then select drivers that fit the need based on that.
If you already have a set of 2226s I would consider trading them for something better suited to your needs. I know this is a JBL forum, but it is important to stand back and ask yourself first what it is you intend to create as an end product of your efforts from a high level. Then devolve the design downward from the top level to the low level details. This is a top-down approach and will be your best way to achieve your goals.
Just my thoughts.
Loren