- Freq Response of the Drivers
- Crossover Point / Slope
- Freq Range of the Amplifier
- Install Location
- In Car Acoustics
- First of all there is no need to worry too much if its sounds good to hear
- Second, Flat response is a theory; It is nearly impractical in car environment
- Even if you do it with advanced tuning equipments (Advanced HU / Processors), Flat response may or may not sound good - It depends on indivuduals taste and genre of music
- RTA / FFT need professional equipments and Pro Calibiration to get accurate readings; Most available in market are not by any means 'Perfect' Test Tools.
- Unless you find a Alarming dip or a Steep peak, there is no need to worry too much.
- RTA will only display a scientific measurement of a Signal - It cannot convey the Emotions of Music
Attached is Fiesta Response (Internal mic; so i would limit the accuracy to not more than 80%)
May not be the most correct graph, but who cares as long as it sounds good
PS: I cannot tune anything in HU or Amp i my case - So what ever it does, it just happens