This is more of an informative post, I took measurements of the front stage of a 2-Door GTI with stock speakers and Kenwood X802-5 5 channel amp. This was done with a calibrated MIC and Room EQ Wizard - REW.
Measurements:
GTI Left = Strong dip at 60hz and 80 hz and 100hz, Best to crossover speakers at 110hz to aftermarket subwoofer as there are too many nulls, even when corrected, which I will post in Example 2.
GTI Left EQ = Dip at 60Hz and 100Hz still present when corrected. Flatter response will be achieved with a 110hz crossover to subwoofer. Dips around 180Hz and 550Hz cannot be EQed out, this is more to do with the car than speakers itself.
GTI Right = Strong dip at 100hz, Best to crossover speakers at 110hz to aftermarket subwoofer as this null is present even when corrected, which I will post below in Example 4.
GTI Right EQ = Dip at 60Hz, 80Hz, 100Hz still present when corrected. Flatter response will be achieved with a 110hz crossover to subwoofer. Dips around 180Hz and 550Hz cannot be EQed out, this has more to do with the car than the speakers.
Again this is just for informative purposes, do with it as you wish.
Measurements:
GTI Left = Strong dip at 60hz and 80 hz and 100hz, Best to crossover speakers at 110hz to aftermarket subwoofer as there are too many nulls, even when corrected, which I will post in Example 2.
GTI Left EQ = Dip at 60Hz and 100Hz still present when corrected. Flatter response will be achieved with a 110hz crossover to subwoofer. Dips around 180Hz and 550Hz cannot be EQed out, this is more to do with the car than speakers itself.
GTI Right = Strong dip at 100hz, Best to crossover speakers at 110hz to aftermarket subwoofer as this null is present even when corrected, which I will post below in Example 4.
GTI Right EQ = Dip at 60Hz, 80Hz, 100Hz still present when corrected. Flatter response will be achieved with a 110hz crossover to subwoofer. Dips around 180Hz and 550Hz cannot be EQed out, this has more to do with the car than the speakers.
Again this is just for informative purposes, do with it as you wish.
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