Arny Krueger a écrit :

"at" wrote in message



Full range speaker, can you recommend some?
Can you recommend any suitable speaker?


Not if sound quality matters to you.


Size doesn't matter.


But size does matter.

If you have a speaker that responds to 13 KHz and has reasonable disperson,
there are definite limits on its size. The laws of physics say that its not
going to be smooth and disperse treble very well, if its much bigger than an
inch or so.

If you have a speaker that responds to 80 Hz and has reasonable power
handling abilities, there are again definite limits on its size. The laws of
physics say that its not going to go that deep and produce a reasonable
amount of clean, if its much smaller than about 5 inches or so.


I'm firstly interested in that flat freq response, at least in the area

of 80Hz-13kHz.

Way to wide of a frequency range for just one driver.


Secondly, the speaker should be of low input wattage (5-20W) if possible

as I'm using a small tube amp to drive it, so I

can't supply much power.


What you are really saying is that you want a speaker to be pretty
efficient. This suggests a horn-loaded design. However, you still have
frequency response limits. It turns out that the high frequency limit and
the low-frequency SPL limit of a compression driver are set by the distance
between the diaphragm and the phasing plug. Make this distance larger to
get more LF performance, and your high end goes away. Make he diaphragm
larger and you have problems with diaphragm break-up, not to mention costs.


That isn't critical though, as I can use a
bigger amp if needed.

Any ideas or recommendations?


Rethink your application. There's a number of reasons why virtually every
speaker system with pretentions to quality is at least 2-way.


Don't you like the frequency response of the one I have chosen ?
http://www.madisound.com/ff225k.pdf
I know that I will have to help him with a tweeter over 10 Khz but this
will be done with nearly no electronic, just *a* cap !

Manufacturing DIY full-range speakers could be an interesting job of
luthier.:-)