Interesting stuff thats more or less also the way i look at it , tonally a loudspeaker can be quit accurate , for example +- 1 db over a large part of the audioband is possible , the way it energizes the air around it is quite different though from the real event
Thats one of the reasons i m designing a loudspeaker with a lot of membrane surface, another thing to do/try is to have multiple units sideways firing or in the case of the latest sonus faber speakers backwards firing .
Imitating the radiaton pattern of real musical instruments .
What also matters quite a bit is the material used as LS unit material , "the perfect piston " technology , accuton for example / hard surface didnt sound the most natural to me in the end
I prefered a certain paper composite material in the end and either ringradiator soft domes or soft domes for highs , they too energize the air different
Also .....,the sound is recorded via very small membrane microphones , maybe it would be a good idea to also increase the diagphram surface of recording mikes
to capture more on tape
In a month time i ll be listening to ed / tony s tapes recorded via studer a 80 tape recorder which is quite neutral over the audioband , i know my speakers are , my amps have deviations in the order of only 0. something , dont know about the recording mikes used ,cause a lot of mikes have difficulties catching the bass frequencies ( seen from freq response specs )
PS ,...Yes i do know freq response is only a part of the reproduction quality , it is one that is controllable though
hj