- Thread Starter
- #21
amper42's REW data in various views
Remember these are at-spot measurements, so
- response is "room curve" representing total radiated sound power, and showing room modes
- mic was close to the chair, so rather many nearfield reflections in upper freq range
Issues
- Revel impulse has strong interference, but BMR is flat at 2,8ms - what is causing that?
- spl level is too low to show difference in distortion
- BMR shows very uneven response above 1kHz
--- was mic height inappropriate for MTM xo summation, or did tweeter have wrong polarity? More quasi-anechoid measurements needed!
---short gate response, clarity and EDT hint to MT crossover summation problems too
View attachment 188007View attachment 188008
Attached is a REW BMR Tower vs F328Be measurement at 10 feet. The speaker is 10 feet away and UMIK-1 is at ear level. Mic stand sits at front edge of couch listening position. This measurement has less near field reflection as it occurs 1" in front of couch rather than at back cushion. UMIK-1 is aimed at speaker. The results are different but lower extension of BMR Tower and reduced roll-off of the tweeter still exist.