ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
After watching Steve's his video on YouTube (https://www.youtube.com/watch?v=4KN9ecGhDYk&t=118s) and watching Geoff Martin's his videos (https://www.youtube.com/watch?v=6Q0joik6E74) about room acousitcs, I got more interested and became more curious about my own room acoustics and bought some equipment and made some measurements.
With that in mind. I've had several sets of BL5's here, and I am now a bit confused. General information and reviews about the BL5 tells you that only to lower part of the frequencies are adapted to the room for compensation. But I ran several sessions where the calibration was done, and noticed that the sound produced during the calibration goes from very low to several kilohertz high.
So a question arrises, How many parameters (different frequencies) are adjusted by the internal DSP of the BL5?
Is there any technical information about the process of measuring and calibration?
I have no technical answer. But for sure we can't call this a DSP or room compensation technology like we have today in BL50 and 90, and in different brands, for which i am totally convinced of the necessity to get the better of any speakers for music listening.
Given the position of the microphons on the BL5, even if the calibration is running different frequencies, it has 90% impact on the bass only. To me it is just like a sophisticated switch for ABL to replace the manual one we have on all Beolab speakers to adjust the bass level depending if the speakers are Free, against a Wall or in Corner position. Not much more, but maybe I am wrong. Anyway the result is this one to me hears.
oli: Given the position of the microphons on the BL5, even if the calibration is running different frequencies, it has 90% impact on the bass only. To me it is just like a sophisticated switch for ABL to replace the manual one we have on all Beolab speakers to adjust the bass level depending if the speakers are Free, against a Wall or in Corner position.
Given the position of the microphons on the BL5, even if the calibration is running different frequencies, it has 90% impact on the bass only. To me it is just like a sophisticated switch for ABL to replace the manual one we have on all Beolab speakers to adjust the bass level depending if the speakers are Free, against a Wall or in Corner position.
I was thinking the same.
If it would correct the complete audible frequency spectrum, then there should have been a mic on top, wouldn't that be?
But why drives the BL5 then a test signal from the lower bass upwards to the tweeter? Still curious what happens inside the BL5. Especially when you think about the realtime equalizing which causes delay and phase-shifts, but at the end the music has to be in phase with the rest of your setup.