From the fun-with-iPhone-RTAs department: I was just messing around with the RTA app on my phone, playing pink noise. I noticed a dip of about 5 Db in the high frequencies centered at about 9K and stretching in a U shape from about 6K to 12K. I decided to use my balance control (remember those?) to check the response of just the left channel. When I did, the dip completely disappeared. The same thing happened when I played the right channel alone. I re-centered the balance, and back came the very same dip. I did this several times with the same results.
The phone was at one point of an equilateral triangle formed with the two speakers, about 5-6 feet from each speaker, with each speaker's axis aimed at the phone's mic. Anyone know why this happened? I know a little bit about frequency response, room interaction, etc., but this one puzzles me.
The phone was at one point of an equilateral triangle formed with the two speakers, about 5-6 feet from each speaker, with each speaker's axis aimed at the phone's mic. Anyone know why this happened? I know a little bit about frequency response, room interaction, etc., but this one puzzles me.