Fix your Pinebook Pro speaker connection
#1
The speakers in (at least some) Pinebook Pro are out-of-phase.  If your audio level seems low, this is probably the cause.  I just corrected this on mine, and I strongly encourage everyone to do this.  Don't wait for a software band-aid for this hardware problem; that is bad practice.

Of course, you need to remove the bottom of the PBP, and follow all the precautions that normally go with that.  Next it's a matter of unplugging the speaker connection from the mainboard.  Note the order the wires on the plug are in.  Then, mercilessly tear the red and white wires out of the plug.  Pull them out by lifting them from the plug, not by pulling in the direction the plug inserts.  Swap the positions of the red and white wires, and press them back into the connector with a small flat blade screwdriver.  Plug the connector back in. reassemble the PBP, and enjoy better audio.
  Reply
#2
(11-20-2020, 08:18 PM)KC9UDX Wrote: The speakers in (at least some) Pinebook Pro are out-of-phase.  If your audio level seems low, this is probably the cause.  I just corrected this on mine, and I strongly encourage everyone to do this.  Don't wait for a software band-aid for this hardware problem; that is bad practice.

Of course, you need to remove the bottom of the PBP, and follow all the precautions that normally go with that.  Next it's a matter of unplugging the speaker connection from the mainboard.  Note the order the wires on the plug are in.  Then, mercilessly tear the red and white wires out of the plug.  Pull them out by lifting them from the plug, not by pulling in the direction the plug inserts.  Swap the positions of the red and white wires, and press them back into the connector with a small flat blade screwdriver.  Plug the connector back in. reassemble the PBP, and enjoy better audio.

I will ask hardware engineer to recheck Pinebook Pro speaker wiring. I assume you means reverse polarity affected both speaker.
  Reply
#3
(11-22-2020, 01:05 AM)tllim Wrote:
(11-20-2020, 08:18 PM)KC9UDX Wrote: The speakers in (at least some) Pinebook Pro are out-of-phase.  If your audio level seems low, this is probably the cause.  I just corrected this on mine, and I strongly encourage everyone to do this.  Don't wait for a software band-aid for this hardware problem; that is bad practice.

Of course, you need to remove the bottom of the PBP, and follow all the precautions that normally go with that.  Next it's a matter of unplugging the speaker connection from the mainboard.  Note the order the wires on the plug are in.  Then, mercilessly tear the red and white wires out of the plug.  Pull them out by lifting them from the plug, not by pulling in the direction the plug inserts.  Swap the positions of the red and white wires, and press them back into the connector with a small flat blade screwdriver.  Plug the connector back in. reassemble the PBP, and enjoy better audio.

I will ask hardware engineer to recheck Pinebook Pro speaker wiring. I assume you means reverse polarity affected both speaker.
If both speakers are connected in reverse there is no issue. What's important is the difference between the two, so if only one of them is connected in reverse the audio will be out of phase.
  Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Pinebook Pro PCB layout files diodelass 1 367 11-24-2020, 02:33 PM
Last Post: cochraLOGICA
  Pinebook Pro Revised Keyboard Firmware jackhumbert 66 29,536 11-04-2020, 04:01 PM
Last Post: ColoBill
  Pinebook Pro won't turn on codebreaker 62 13,861 10-27-2020, 08:27 AM
Last Post: cefre00
  Pinebook USB reconnections brittman914 3 469 10-18-2020, 06:36 PM
Last Post: brittman914
  Brand-new Pinebook Pro - keyboard not working guy100 8 981 10-09-2020, 10:49 AM
Last Post: guy100
Question Pinebook Pro Usb-C hub price TDC_PBP 9 2,682 10-06-2020, 04:11 AM
Last Post: appelgriebsch
  Pinebook Pro Boot Issues - Booting needs multiple attempts mtndew 13 1,367 10-04-2020, 08:55 AM
Last Post: wdt
  Inverted speaker stereo polarity slyecho 12 2,309 09-22-2020, 12:08 AM
Last Post: Artcfox
  Pinephone dock with Pinebook Pro? karlnicholas 2 592 09-21-2020, 05:11 PM
Last Post: karlnicholas
  PBP Speaker Replacement 8jef 25 6,647 09-09-2020, 05:09 AM
Last Post: speculatrix

Forum Jump:


Users browsing this thread: 1 Guest(s)