Andy, u r actually talking about speaker quality in the earlier statement. Not stereo n mono.
This post is better

stereo > mono.

I know what you're talking about...if ringtone through stereo, it'll sucks...or maybe not...I don't know

aiks, apasal dah tukar 'N8 is Nokia's last hope for now'

where is the fruit one.....

positive to negative d

as u say >3000Hz then we will start notice the effect, at that range there's still quite number of instrument freq... also when we are nearer to the phone where this is the normal case of viewing video then the effect will be more significant where it might be anything >2000Hz already affected...

btw thanks for the detail info...

aiks, apasal dah tukar 'N8 is Nokia's last hope for now'

where is the fruit one.....

positive to negative d

you are correct.....  but I am using the example of ur speaker are 10cm apart...  in real life...  in phone.. speaker are 5cm apart?  that make the frequecy go up to 6kHz...   

and speaker in phone probably only able to produce 15kHz....  Male voice, 1Khz..  female.. 2KHz...  above 6kHz..  yah.. still some instrument there...  most very high pitch sound instrument....
if u are into Hi-Fi..  then u know what is actually a real Stereo effect..  is make u just like u are in the same environment of the band producing the sound infront of u..    very similar to 3D in visual..... 

ok la.. that is for the day...  really late liao.. good night all....

what u say is correct....  but ur understanding are only up to there...

let me explaint to u why ....

first of all, U have to understand 1 speaker not MUST produce sound worse than 2 speaker.. like the example I give you.. 

2nd.. for phone..  even u have 2 speakers.. u can hardly tell which sound come from which speaker to ur ear... our ear reconize sound from which direction by calculation on our brain.. the different of sound deliver to our left earn and right ear...  because the stereo speaker on phone are ultra close..  We do not know which and which channel from which speakers..

3rd...  Sound.. traval by about 300m/s....    and sound have wavelenght....    human ear can listen something like 80Hz to 18kHz.....  ur left speaker and ur right speaker on the phone distance are .. say max 10cm apart.....  in order for our ear to know the different.. the wave lenght of the sound MUST be less than 10cm then only we MIGHT possible to tell the different.... 

Speed = 300m/s
wavelength = 10cm or 0.1m
the frequency u Might/start can tell the different is  300m/s divide by 0.1m which u get 3000Hz.. which is 3kHz and above sound u might able to tell the different...  any freq below that..  we can differential sh1t....  that is also why the reason we always use only 1 subwoofer...  the wavelenght of those frequency are few Meter..  we know sh1t about where the sound from...
4th...  compliment to the 2nd point.. u have to place the phone as close to ur ear as possible to make the different of distance travel to ur 2 ear to be high...  mean distant A -distant B = higher the value.... then u can tell the different more obvious....
sum up all the point above....  if a phone with mono speaker. ..  and this mono speaker can produce good sound..  it mix up ur source 2 channels together and output to this speaker...  we can tell sh1t the different of a stereo speaker phone...
u talking about studio monitor speaker.. I can talk 1 day 1 night with u....      and u also can see why they put the left and right speaker far apart to get actual Stereo effect...

EOF.. thank you....

Changed again!

Thanks for your time for the detailed explanation.

Actually, I haven't heard of a good mono speaker so I can't comment on it but in terms of smartphones, wouldn't having stereo speaker for dedicated channels produce better sound than single speaker?
When the 2 source channel mix together and output through single speaker VS  2 speaker output for dedicated channel, wouldn't the 2 speaker produce better sound (let's make it simple that it's identical speakers and let's forget about placement for now).

What I'm trying to say is, let's say we have 2 speakers playing dedicated channels, we remove one of the speaker and try to output both channels through 1 speaker instead. Which will sound better?
From my experience, I can tell the different and I don't like mono.

As for Studio Monitor, I'm just using it as an example as they are usually sold per piece compared to commercial speakers which usually comes in a set. We can also take keyboard amp for example, they sell per piece, which if you take one piece, you only get mono output and thus, mono quality. To get stereo quality, you will need to get another piece.

ya.. have 2 speaker always better than 1...  u have the point there... 

overally...  I just wanted to tell u..  MONO doesn't neccessary produce worse sound than Stereo in a device so small as phone...  coz.. the different we can tell are ultra minimal...

my frens all aiming N8,SGS and BB instead of i4 since i4 got lots of So*** problem.mostly N8 coz tempted of 12MP largest sensor(i promoted the sensor of N8,S Amoled of SGS and BB push mail)lol.N8 sales would be another legend,my prediction.

wow, damn great picture qualities on gsmarena.com..
only im worried about nokia, if it is true 8mp without autofocus, a MAJOR letdown from nokia fans.. (E7, C7)