Middriver selection?

[buggsson]

It all depends on the application and how the drivers are being used.
Honestly, I don't like the idea of mid drivers crammed in a box.
..Especially when they must be used in very small enclosures.

The application I don't know as yet, but I have singeled out three maybies, and are more and more leening in one direction.

I have no inclination to cramm anything into anything, but I would prefer mid drivers that does not require to be put into enclosures that are larger than necessary, I believe my total volume, when I am done and ready, will be large enough as it is. If I have to choose between a driver recommended for 60 L and one recommended for 15-20 L, I know which one I am gonna take.

How I will use them in respect to placement in conjunction with the tweeter, I guess that will have to wait until I know the height of the box and the number of what kind of drivers I will use, and the "best" way to configure them? Listening hight of the ears is one issue I believe?

 

[navin]

i've recently been playing with the Fostex FF85K (not stock mind you) and have really been impressed...Its one downside is fairly low efficiency (~87 dB once i've done it up)

well you could use a line array to push that up (if you are not afraid of comb effects).

BTW what are the mods you have done to this driver? it's HF response is quite good but it does have a rather limited Xmax and power handling.

I think that it might be best if I could descide on which system to strive for, otherwise, the options migth be too many and confusing. I'll start a new thread. It is very difficult indeed, in my opinion to know what to do, and when to do it, regarding this business of building loudspeakers.

first... narrow your option by considering
1. box size limitations
2. cost limitations
3. complexity of box/build and crossover

then...visit the systems built by John K and Troels Gravesen et. al and go from there; you could even start with a JX92+G2si combo a la Jim Griffin and mate that to a pair of good 7-8" woofers to augment the bass and allow the JX92 to concentrate on the mids. or if you want something simpler to build Hawthone Audio's 15" Sterling/Silver OB Duets are options.

 

[Cloth Ears]

Another option is to look for a coaxial speaker, which removes some of the bad points of crossing over. For instance, the Seas T18RE COAX-TVFC H1144 that Tony Gee uses in his USB speaker. Not specifically trying to point you at this driver (or is it drivers?), but just at the concept. I know that you can get many other co-ax's that can do a good job (pre-loved Tannoys, PHL does some, etc). Save you from off-setting your tweeter...