Pine book Pro Speakers

[User 6582]

As I'm playing with VLC during music playback, it is preety easy to over load the speakers. Especially using the equalizer and other audio features of VLC. Anyone else have any thoughts?

[bcnaz]

As I'm playing with VLC during music playback, it is preety easy to over load the speakers. Especially using the equalizer and other audio features of VLC. Anyone else have any thoughts?

 I believe Luke had mentioned in a post a month or two back that there was some distortion at or above 70%  that he said was a software problem that had been found and they were working on fixing it.

I wonder if when using the equalizer,   you can just boost the frequencies that the speakers can handle.... ?
and not the frequencies above or below what they cannot handle  ?  ( try just boosting the midrange as a starting point ? )
Maybe try some external speakers for comparison  ?

[User 6582]

As I'm playing with VLC during music playback, it is preety easy to over load the speakers. Especially using the equalizer and other audio features of VLC. Anyone else have any thoughts?

 I believe Luke had mentioned in a post a month or two back that there was some distortion at or above 70%  that he said was a software problem that had been found and they were working on fixing it.

I wonder if when using the equalizer,   you can just boost the frequencies that the speakers can handle.... ?
and not the frequencies above or below what they cannot handle  ?  ( try just boosting the midrange as a starting point ? )
Maybe try some external speakers for comparison  ?

Thanks for the update BCnAZ!
Too late for me to try again tonight, but I will in a day or two.

Another thing I found was adding PULSEAUDIO caused me to lose ANY sound. That was quickly removed!:-)

[Watercourse]

I have never expected much, if anything, from laptop speakers.
Too bad on the Pulseaudio. it's a terrific tool for adjusting and compressing sound, esp. for those of us with compromised hearing.
And yet, i'm sure many awesome teaks are in the future for PBP.
In the meantime i'll  be using earbuds anyway, and the eq in VLC does a pretty good job.
I'll try it with a BT speaker when it shows up, just for fun.

[bcnaz]

Yes, testing the Bluetooth is an excellent idea also.
Though I was thinking hardwired external speakers when I made the suggestion. ( Possibly 'powered' external speakers )
Hopefully both function properly.
More choices everyday :-)

---

I am slightly hearing challenged myself,
but I do prefer to hear my laptop speakers directly when I can.
Though there are occasions when something else is needed.

[MrTester]

Since this thread is the closest to my concern, I will avoid starting a new one.
I noticed that there is a significant amount of resonance in the laptop body when operating the speakers >50%, After my updates, I ma take my PPB apart and do a little do a little tweaking to improve the audio quality. Since I doubt there was any acoustical control behind the speakers put in place (IE a speaker box mentality). I will happily do some trial and error, and post my findings for those who may want to eak the most out of their PBP.

[tllim]

Since this thread is the closest to my concern, I will avoid starting a new one.
I noticed that there is a significant amount of resonance in the laptop body when operating the speakers >50%, After my updates, I ma take my PPB apart and do a little do a little tweaking to improve the audio quality. Since I doubt there was any acoustical control behind the speakers put in place (IE a speaker box mentality). I will happily do some trial and error, and post my findings for those who may want to eak the most out of their PBP.

Please post your finding. If the improvement can be implemented at production floor easily, for sure will ask hardware team to review.

[MrTester]

Greetings PBP friends, 
Tonight I decided to dig inside and see what mechanical/ acoustical improvements I could make to the PBP speaker system. 

Background: Initially when working on my PBP, I noticed when playing audio, the playback was extremely harsh on the ears and a significant amount of resonance in the palm rest (back side of the speakers) My main goal was to observe and find some mechanical isolation solution to improve audio.

Observations: After opening my PBP, I found the following, A simple speaker, isolated from the metal bottom of the laptop (and speaker grill/opening ) by an adhesive foam surround. The back of the speaker (magnet side) is directly adhered to the plastic palm rests, located in place by molded frame apart of the palm rest. 

My initial assessment was that a significant amount of energy was being transferred from the speaker magnet directly into the palm rests, resulting in physical resonance and contributing to the observed acoustical resonance.  Considering the space as tight manufacturing tolerances, any mechanical isolation solution would need to be minimal thickness. With the above comment proposing a MFG change would be considered, The cost of such options was in consideration. 

I tested Duct tape, Electrical tape, and athletic tape. My intention was to cut just enough tape, to fit behind the speaker, and isolate it from the palm rest. All produced significant reduction in physical energy transfer into the palm rest. The acoustical improvement is reasonable in my opinion, I would like others to test if this is a significant enough of a improvement. 

I have included photos of my work, my preferred choice was athletic tape (woven fabric tape, with high adhesive properties).

[User 6582]

Greetings PBP friends, 
Tonight I decided to dig inside and see what mechanical/ acoustical improvements I could make to the PBP speaker system. 

Background: Initially when working on my PBP, I noticed when playing audio, the playback was extremely harsh on the ears and a significant amount of resonance in the palm rest (back side of the speakers) My main goal was to observe and find some mechanical isolation solution to improve audio.

Observations: After opening my PBP, I found the following, A simple speaker, isolated from the metal bottom of the laptop (and speaker grill/opening ) by an adhesive foam surround. The back of the speaker (magnet side) is directly adhered to the plastic palm rests, located in place by molded frame apart of the palm rest. 

My initial assessment was that a significant amount of energy was being transferred from the speaker magnet directly into the palm rests, resulting in physical resonance and contributing to the observed acoustical resonance.  Considering the space as tight manufacturing tolerances, any mechanical isolation solution would need to be minimal thickness. With the above comment considering a MFG change could be considered, The cost of such options was in consideration. 

I tested Duct tape, Electrical tape, and athletic tape. My intention was to cut just enough tape, to fit behind the speaker, and isolate it from the palm rest. All produced significant reduction in physical energy transfer into the palm rest. The acoustical improvement is reasonable in my opinion, I would like others to test if this is a significant enough of a improvement. 

I have included photos of my work, my preferred choice was athletic tape (woven fabric tape, with high adhesive properties).

That's excellent!!
And sounds, forgive the pun, that the tape may be what relieves (absorbs?) the buzziness?
Clearer high level volume? Clearer in general?


Here's my thought, unsolicited: How about a drop of rubber cement on the magnet, sufficient to spread wide enough to cover the whole circular area of the magnet? Just enough to insulate the magnet.....

I'm not brave enough, nor have the time to try it right now. However, what do you think? :-)

[zaius]

I have included photos of my work, my preferred choice was athletic tape (woven fabric tape, with high adhesive properties).

Have you considered trying friction tape?  It's cotton cloth impregnated with rubber. Once used as electrical tape, it has good adhesion, it's non-conductive, and very durable.  It's generally 15 mil, so it might be thicker without being too thick.