Dear Bob: I agree with your two: " do you agree? ", but that happen at almost any SPL!!!
I posted about the deviations on your phono stage to have a reference that that flat frequency goal ( almost desired one ) is a very complex one, I'm in favor of that goal and accuracy to the recording with the whole factors that involve that accuracy to the recording for obtain enjoy and pleasure when we hear/heard our audio systems or any audio system.
As you can read in what I posted I like you heard/hear my audio system at almost one SPL and I change when " that " ( any ) LP was recorded at out of standard recording levels. If you read again you can " see " that my audio system ( with out any previous measure SPL set-up ) SPL set-up almost coincide with your ( start point ) 83 db at 1khz: mine 84 db ( I made this measure to fast,, so maybe is nearer your number. Btw, some years ago I made the measure of my room-system and was very evenly through the audio frequency, today I heard better than on those days, maybe is better. )
I already posted that that 83 db SPL at " your seat " is a very good point to start but what factors will define that you will be satisfied with that SPL?, extremely complex too many factors to take it as a rule, for example: two similar room-audio systems with the same model speakers but with a " little " different speaker specification: sensitivity, one 86 db at one meter and the other 90 db on that same efficiency factor.
Do you think that you can/could be satisfied obtaining ( the same for both ) that 83 db at your seat position?, well maybe yes and maybe not depending on your amplifier ( between other things ) and if that amplifier mantain his distortions level at any measure current demanding. In our example we are " asking " more than double watts at the amplifier with the 86 db efficiency speaker and I'm almost sure that the distortion of that amplifier will be higher in this case and over the time from listening to this speaker ( against the other ) the ear/brain fatigue will be higher and maybe you have to lower that SPL. This is only an example with only one factor in " game " ( well not one but two. ), imagine hundred of factors that influence what we are hearing in our audio system and you can see that that subject is complex!!!! for say the least.
Anyway, I repeat, I agree with you about that 83 db ( at seat position ) start point is: welcome!!!!!!
Regards and enjoy the music.
Raul.
I posted about the deviations on your phono stage to have a reference that that flat frequency goal ( almost desired one ) is a very complex one, I'm in favor of that goal and accuracy to the recording with the whole factors that involve that accuracy to the recording for obtain enjoy and pleasure when we hear/heard our audio systems or any audio system.
As you can read in what I posted I like you heard/hear my audio system at almost one SPL and I change when " that " ( any ) LP was recorded at out of standard recording levels. If you read again you can " see " that my audio system ( with out any previous measure SPL set-up ) SPL set-up almost coincide with your ( start point ) 83 db at 1khz: mine 84 db ( I made this measure to fast,, so maybe is nearer your number. Btw, some years ago I made the measure of my room-system and was very evenly through the audio frequency, today I heard better than on those days, maybe is better. )
I already posted that that 83 db SPL at " your seat " is a very good point to start but what factors will define that you will be satisfied with that SPL?, extremely complex too many factors to take it as a rule, for example: two similar room-audio systems with the same model speakers but with a " little " different speaker specification: sensitivity, one 86 db at one meter and the other 90 db on that same efficiency factor.
Do you think that you can/could be satisfied obtaining ( the same for both ) that 83 db at your seat position?, well maybe yes and maybe not depending on your amplifier ( between other things ) and if that amplifier mantain his distortions level at any measure current demanding. In our example we are " asking " more than double watts at the amplifier with the 86 db efficiency speaker and I'm almost sure that the distortion of that amplifier will be higher in this case and over the time from listening to this speaker ( against the other ) the ear/brain fatigue will be higher and maybe you have to lower that SPL. This is only an example with only one factor in " game " ( well not one but two. ), imagine hundred of factors that influence what we are hearing in our audio system and you can see that that subject is complex!!!! for say the least.
Anyway, I repeat, I agree with you about that 83 db ( at seat position ) start point is: welcome!!!!!!
Regards and enjoy the music.
Raul.