Conelike shape around loudspeakers

C

chickenfingers

Audioholic Intern
Hi

I have a lecture like question.
Is it possible to amplify the output signal from small loudspeakers (say 10cm radius) by placing a cone like shape around them? I suppose sound will then become very directive, but will the signal be louder without losing quality?

Thanks a lot for your help!

Cheers
bye
 
avaserfi

avaserfi

Audioholic Ninja
Depending on the driver type (not all are regular cone shaped) certain modifications can help performance in some areas while other modifications can harm performance. In the end any modification would have to be tested (via proper measurements) to see its actual effect on performance.

Now, the kind of modification you are talking about would probably not have a positive result and likely be detrimental to off axis response of the driver in question. This is likely because when a driver is designed it is designed as a whole unit - there is more than just the surface area on the cone to the mix there is an entire motor assembly to take into account.
 
S

sparky77

Full Audioholic
I think what your talking about would be much like horn loading a loudspeaker, which can provide many good benefits, but like anything else, every advatage presented presents another problem that must be dealt with, my experience is that horn loading is a lot more difficult to predict the outcome than any other design, it takes a lot of experimenting. I'll provide a few links to interesting articles I came across while researching a potential horn loaded drive design.

http://www.passdiy.com/pdf/KleinHorn.pdf
http://www.bd-design.nl/index1.html
 
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