Originally Posted by PassingInterest
Any comments or observations?
Nice to see you put in the extra time and effort to take proper measurements. Unfortunately there are still some errors in your measurement procedure that is making the results not quite right. Those errors are:
1. Reflection from ground.
2. Proximity of microphone.
To deal with 1., it would have been better to raise the microphone and speaker high into the air and gate the measurement. The good thing about this, is it's probably not a big deal that the ground reflection is included. Also, it doesn't seem to show up that much in the measurements.
As for 2., this does create an unfair advantage for the smaller stand mount speakers. It's why the NHT and Widow Makers measure so well. The lower woofers are at an unsuitable angle and distance from the microphone. A 2m measurement distance would be more appropriate.
With that out of the way, it looks like the widow makers measure really well and are tuned very low. I see 30hz there
Very nice. I'd take them over the NHT based on this. But in reality, there's more to it. The JBL measures pretty bad I think. But for reasons mentioned above, I wouldn't dismiss them. The only thing I'd check on the JBL is the tweeter polarity. It looks wrong.
Overall, very nicely measured speakers. Thanks for measuring them.