High 3rd Harmonic in speaker measurement

[dasfdwfde]

Hi there,

I recently built DIY Tarkus speakers. I took measurement using UMIK-1 in around 34m2 (360 square ft) room.
Room is almost without any furniture, it's not room I will be listening in.
I took this measurement only to see if everything is working correctly.

What is worrying me is high 3rd harmonic distortion starting at around 1.2 Khz up to 2.2 Khz.
Could it be crossover distortion ? Or somehow room alters distortion numbers ?
Or just this speakers are not so good in this regard.
I measured both speakers individually and both show the same distortion.

Overall distortion seems high.
Please help thanks

 

[John Mulcahy]

The 3rd harmonic is a little high in that region, perhaps the tweeter isn't entirely happy down there or the mid is struggling a little.