[manugeorge]

my speaker system is edifier s550.the manufacturer says the subwoofer frequency is 20hz to 150hz, but in many reviews the frequency response is claimed from 40hz to 150hz in -3 to +3 db the graph goes down after 40hz.
I only used my speaker around 5hours.will burn in make any improvement in the frequency range.

 

[Uncle Erik]

Quote:

...the manufacturer says....

 
Here is a grain of salt for the manufacturer's claims.
 

 
I don't think you're going to get another 20Hz of extension by running it for awhile.

 

[manugeorge]

 
Quote:

Quote:
 
Here is a grain of salt for the manufacturer's claims.
 

 
I don't think you're going to get another 20Hz of extension by running it for awhile.

you mean there is no effect by burn in

 

[Chiron]

Uncle Eric

Lol. Point well emphasized. A usefull "smiley" for future use

Neels

 

[kboe]

The only way for you to find out is to listen yourself. I have witnessed burn in to all degrees, from a little, to a product totally changing after a few hundred hours of play. Uncle Eric has not. Who to believe...., the answer, your ears, not ours.

Just enjoy the music for now, don't expect any change, but be mindful of how your system sounds now and if any changes occur, your ears will alert you.

 

[khaos974]

Yes, "burning in" your transducers will change their characteristics, it's likely the frequency response will improve... a bit.
No, you won't be getting more bass, or just a tiny amount, it's not a magical solution, I would at the very best expect a 3 or 4 Hz bass from burn in, 20 Hz would just be crazy.

 

[manugeorge]

my subwoofer is producing low frequencies but below 40hz the loudness is rather low http://edifier.com.ua/images/mod_news/Z5500vsS550/28_.jpg this is the frequency response of my entire system you can see the graph falls down below 40hz.I want an improvement in this range. please suggest any configuration or modding to get a flat response from 20hz to 150hz.will I get any improvement in lower frequency extension if I arrange the speaker system in a good room.

 

[khaos974]

Equalize, but be careful, you could easily introduce distortion, and even damage you speakers if you boost too much.
Look up how to equalize properly with a parametric EQ on internet, it's probably the best solution.

 

[manugeorge]

http://www.edifier.uz/img/news/16/16.png in this graph, the subwoofer has a response of 45hz to 150hz in +/-3db variation.but the reviewer says the lower boundary can vary with varying room conditions.is that means the subwoofer can extend to lower frequency in +/-3db under perfect room conditions

 

[Prog Rock Man]

Here two speakers were burned in and the frequency dropped from 48 to 46 Hz and 53 to 49 Hz. But after they had cooled down and rested they went back to their original state.
 
http://www.nousaine.com/pdfs/The%20Art%20of%20Breakin.pdf

 

[xnor]

Quote:

Here two speakers were burned in and the frequency dropped from 48 to 46 Hz and 53 to 49 Hz. But after they had cooled down and rested they went back to their original state.
 
http://www.nousaine.com/pdfs/The%20Art%20of%20Breakin.pdf

Haha that's fantastic.

 

[Prog Rock Man]

Here is another one
 
http://www.nousaine.com/pdfs/dynaudio.pdf
 
and another
 
http://www.audioholics.com/education/loudspeaker-basics/speaker-break-in-fact-or-fiction

 

[manugeorge]

 
from your advises I realised there is no improvement by burn in.this is my speaker's frequency response.from 50hz to 90hz the sound is slight high.comparing with the lower range(below 50hzto 25hz) and the upper range(above 500hz to 1khz) is in the same line.If I arrange the equalizer properly  will I get an overall balanced sound

 

[xnor]

Just a side note, if this is measured at the listening position (room response) I think it's fine or even desired to have a smooth treble roll-off, down 5 dB at 10 kHz or so.

 

[moonboy403]

Quote:

 
from your advises I realised there is no improvement by burn in.this is my speaker's frequency response.from 50hz to 90hz the sound is slight high.comparing with the lower range(below 50hzto 25hz) and the upper range(above 500hz to 1khz) is in the same line.If I arrange the equalizer properly  will I get an overall balanced sound

 
If you actually measure your own room, you'll see that your actual room response is drastically different from what the graph showed. Your room needs an anechoic chamber and the response measured has to be highly smoothed in order for you to get that response.
 
No equalizer will get you responses that your speakers simply can't handle. You can place your subwoofer in a corner of the room and that will probably help with its extension a little bit. 
 
Here's my speaker system's in room response from 20hz to 300hz in my semi treated room (as you can see, this is what a normal in room FR graph looks like):
 
 
In room FR is considered pretty good if you can get within +/-8 db.