I'm answering my own question here. I posted these questions because I keep seeing user comments about the Flip 3s not putting out much bass sound or having a hissing sound or losing the bluetooth signal or briefly losing sound. I have two Flip 3s that I use in stereo mode and my experience is that the Flip 3 speakers have outstanding sound whether using one or two cabinets, but there have been times when I had some problems with the bluetooth connection dropping or having one speaker putting out more volume than the other or having very low volume or an unusual lack of bass response or a strangely uneven frequency response overall. All of these problems have been solved. I never experienced the "hissing or humming" sound that others have reported, but I may have an idea where that is coming from. My issues with the bluetooth connection sometimes dropping and uneven volume between two Flip 3s in stereo mode have been solved with a firmware update. After doing a firmware update, be sure to turn off your speaker(s) and unpair or uninstall them from any device that will be using the speaker(s). You will want to re-pair the speaker(s) after a firmware update because the pairing process is how your phone or laptop, etc. gets the information from your speaker(s) about the capabilities they have and any special parameters or protocols that should be used to communicate with the speaker(s). When I say to un-pair and re-pair, I'm not talking about just disconnecting and re-connecting. That's different. You have to make sure to un-pair after doing a firmware update so that your phone or laptop, etc. knows NOTHING about your speaker(s) anymore. Then re-pair the speakers and at that point you will actually get the full benefit of the firmware update. The problem I had with the bluetooth connection dropping may have been related to how microsoft windows 10 (my laptop) inappropriately handles bluetooth in general. Whenever bluetooth is enabled in win8.1 and win10 (and maybe other versions of windows), windows CONTINUOUSLY scans for bluetooth devices to pair with, so it is constantly sending transmissions to bluetooth devices it sees asking them if they want to pair. Even with just a single speaker that was already paired and connected, windows still kept seeing this speaker as a different type of device and kept "bashing" it asking it if it wanted to pair as a different type of device. Eventually this would cause my speaker to disconnect. A firmware update to the speaker solved the disconnect problem, but maybe microsoft is as fault here -- not sure. Before the speaker firmware update, I would have to stop a windows service called Device Association Service in task manager after connecting to my speaker in order to keep windows from "bashing" my speaker and disconnecting. I don't have to do that anymore. Regarding lack of bass response when using a windows laptop you need to CONFIGURE your speaker while it is connected. If you go to Sounds in Control Panel, or right click the speaker icon in the system tray, choose Show Playback Devices. Right click on your bluetooth speakers and choose Configure. Set the speakers as Stereo and make sure you select the checkbox that says "Fullrange Speakers" and hit OK to be done with that. If windows thinks your speakers are NOT fullrange speakers, then windows might not send the low frequency sound to them and they will be denied the bass frequencies. Also, while looking at Playback devices, right click your bluetooth speakers and choose Properties and choose Enhancements. Make sure there are NO enhancements checked or just check the box that says Disable All Enhancements and click apply. Click OK or whatever to be done with all that and your speakers should be getting the full original sound signal. You might want to reboot after this just to be sure the settings take hold. If there are any other equalizer or sound enhancement or sound effects programs or driver settings you find like this, please try to turn them off or disable them if your speakers still seem to lack a full range sound that has a nice flat frequency response (all frequencies play at the same volume). Obvously some songs just don't have much bass and others do - not just bass but the whole frequency range changes from song to song depending on what was done in the recording studio and what was done to the original song during the encoding process to mp3 or streaming audio, etc. This whole "equalizer, sound enhancement" stuff applies to your smart phone just as much. If your phone has any of this stuff installed, uninstall it if possible or go to the settings of the audio player app and see if it has any of this "equalizer, sound enhancement" stuff and turn it OFF or disable it or whatever. These things just mess up the natural sound. OK - one more very IMPORTANT thing to be aware of is that USB 3.0 devices operate at a frequency that can easily interfere with the bluetooth signal. Check out "Bluetooth" on wikipedia and look at the bottom of the page. You'll see a small section about USB 3.0 interfering with bluetooth. Manufacturers of USB 3.x devices and cables often times do not properly shield their cables or devices or ports. This can definitely cause the bluetooth signal to be lost or break up between your phone, laptop, etc. and your speakers. Even a USB 3.0 port on the laptop you are using your bluetooth speaker(s) can cause this problem (poorly designed laptop). I don't know, but MAYBE unshielded USB 3.x ports, cables, or devices can cause the hissing or hum sound some people are experiencing with their Flip 3s. Google search this subject for more info. By the way, the bluetooth range I'm getting between my two flip 3s is more than twice the range specified for these class 2 bluetooth devices. 33 feet (10 meters) is supposed to be the maximum for class 2 bluetooth devices, but I get a loss-free connection at over 68 feet between two speakers AND between my phone or laptop and my speakers. If you are losing connection, then there must be interference causing it. Make sure you have the most recent firmware update on your speakers and laptops and phones. I almost sent my speakers back to JBL in the beginning, but I'm VERY glad I kept them. They are awesome. My only wish is that they had twice the battery power. Maybe someday when the battery goes bad and they are no longer under warranty, then I'll replace the 3AH battery with two of them in parallel for twice the capacity. I hope this helps other's who have had problems with their Flip 3s.
Answered by: wahilde61
Date published: 2021-06-06