frequency responses

[Professor smith]

What factors determine the final frequency response of a loudspeaker being measured? (excluding the room). And what things can the designer do to change the response, presumably to make it as flat as possible?

[gootee]

Your question is extremely general; too general. If the enclosure geometry's effects are not configurable, or there is no enclosure, and the amplifier is not configurable or changing its frequency response is not desirable, then a passive filter could be designed to go between the amplifier output and the speaker, to flatten the speaker's response at at least one point in space.

I am assuming that you meant to consider only one speaker driver, since you didn't specify how many. But if there are several, such as bass, mid, and treble drivers, then it will be much more complicated and you would need to research "crossover design".

[speakerdoctor]

It appears the 'professor' needs to go to speaker building school.

Visit this link, it's intended as an introduction for newbees wanting to learn about speaker design and building.

The Speaker Building Bible - Techtalk Speaker Building, Audio, Video, and Electronics Customer Discussion Forum From Parts-Express.com

Or, part with a few $$ and buy a copy, new or used, of Vance Dickason's Loudspeaker Cookbook.

[AllenB]

I assume (if I understand your question) you're expecting to hear baffle step and such issues. You want to consider the total radiation of the unit. Once you do this, you don't need to consider anything else.

[Inductor]

Originally Posted by speakerdoctor

It appears the 'professor' needs to go to speaker building school.

I wonder if his students sent him here...