Antone Posted October 7, 2022 Share Posted October 7, 2022  Antone Posted yesterday at 01:07 AM 🙂 1/3 octave RTA of pink noise: Measured at ear level at listening position approximately 9 ft from motor board: Dayton UMM6 Calibrated measurement mic with REW software: Followingthis schematic: 3” by 3” reflex port 1 Quote Link to comment Share on other sites More sharing options...
JohnA Posted October 8, 2022 Share Posted October 8, 2022 Nice1 But you gotta work on your room, or turn the subwoofer down, or both. Quote Link to comment Share on other sites More sharing options...
Deang Posted October 8, 2022 Share Posted October 8, 2022 Since you mentioned it, I'm curious about something. At 9 feet back, how much of that is the speaker and how much is the room? 1 Quote Link to comment Share on other sites More sharing options...
Antone Posted October 9, 2022 Author Share Posted October 9, 2022 John, Thanks! There is no subwoofer. That bass bump is largely a result of the listening position being a foot from the wall, which location emphasizes 40 Hz 6+ dB. The Heresy’s are around two feet from the wall behind them. The Dayton Audio PA310-8 Ohm woofers are at least 2 or 3 dB more sensitive than the original Klipsch K 22 E (Eminence) 11 Ohm woofers - and much more athletic.  When measuring the speakers in the middle of the room from a yard away that bass hump goes away and the tweeters’ response tilts upward significantly. The 3” long by 3” I. D port tube flattens the bass, moving its peak down in frequency. Picture that wide hump moving to the right almost an octave without the port. Dean, a lot of it is the room. Especially below 700 Hz.  You both are right; I need to smooth bass response. I listen at moderately low volumes, and do not mind a bit of “loudness” curve. Though the graph shows a lot. Quote Link to comment Share on other sites More sharing options...
Antone Posted October 9, 2022 Author Share Posted October 9, 2022 John, Thanks! There is no subwoofer. That bass bump is largely a result of the listening position being a foot from the wall, which location emphasizes 40 Hz 6+ dB. The Heresy’s are around two feet from the wall behind them. The Dayton Audio PA310-8 Ohm woofers are at least 2 or 3 dB more sensitive than the original Klipsch K 22 E (Eminence) 11 Ohm woofers - and much more athletic.  When measuring the speakers in the middle of the room from a yard away that bass hump goes away and the tweeters’ response tilts upward significantly. The 3” long by 3” I. D port tube flattens the bass, moving its peak down in frequency. Picture that wide hump moving to the right almost an octave without the port. Dean, a lot of it is the room. Especially below 700 Hz.  You both are right; I need to smooth bass response. I listen at moderately low volumes, and do not mind a bit of “loudness” curve. Though the graph shows a lot. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.