Chosen Solution
There is this problem with JBL Flip 4, I think that playing via AUX sound is more controlled, clearer bass and less distortion. But it cuts out the sound on quiet passages in the songs, or in the movie, it soo annoying. Does anyone have a solution? It works fine with BlueTooth, but let’s say, movies, the sound has a delay via BlueTooth so it’s weird.
Hi, dude! I had the same problem with my JBL flip 4, but i know how to solve it. Try to set max volume on your device and then set optimal volume with +/- buttons on speaker. If the sound from connected device is low, flip 4 is cut it out. I don’t know why, but it is so. I hope that I helped you.
As a workaround, you can run a signal generator app in the background, set to very low frequency like 20 Hz, and low but not too low amplitude. Flip4 will reject this frequency and not distort/waste power, but it will be alive all the time.
Hi, I’ve found that going into the so-called “low frequency mode” fixes it completely - after also having made a firmware update (so my firmware is now as of 1-aug-2020). For those unaware, “low frequency mode” does not put in a low frequency booster, as it might sound, but instead disables the sound processor. The same sound processor that cuts out quiet sounds also cuts low frequencies at high amplitudes, to avoid distortion - therefore they call this disabling “low frequency mode” because there will be no more low frequency CUTTING. So, thank you JBL, but I like my sound just as it is; if it’s so loud that it distorts, I can take care to lower the volume or put in an equalizer as I desire. So: longpress bluetooth + volume minus - go into “low frequency mode” a k a unaltered sound; longpress them again to return to “processed mode” Restarting or shutting down reverts to the default “processed mode”.
It is possible to hack the pcb to fix it. Extract the board, locate Q12, and solder a wire that shorts its collector (middle terminal) to ground. This will make Flip 4 think there is always audio going into aux.
You may also want to remove 33-ohm resistors, that may reduce distortion for signal sources that have high-ish output impedance. This hack causes a few side effects though: Bluetooth pairing sounds will not be played. Bluetooth audio does work, just no pairing sounds.
I don’t have a fix fix, but I have found that I can turn on a YouTube vid of a constant 12hr dog whistle and that will keep the speaker awake. There is still sound coming through the speaker, but you can’t hear it, so it doesn’t interfere with whatever you are listening to. Might annoy ya dog though. But I turn YT’s volume down really low and that still keeps it awake. You would think in the 2 year span from the original post that JBL would have figured it tf out.
What I did to get around this was plug it into power, BUT, when I tried to fix this issue while plugged in with an iPhone charger(the dinky 5w one that comes in the boxes of most iPhones), it did NOT work. I used a more powerful wall adapter and there is no more cutting out. Hope this solves your issue:)
hello! I have JBL Charge 4, and it have the same problem!! All that I notice after half year of using is that the speaker’s aux volume is saving separately from volume via bluetooth. How it helps me: I simply set low aux volume on the speaker and adjust volume on Device. The stronger is signal, the less cuts would be. Unfortunately, it doesn’t work ideal, but it can helps with 80% sounds you play. So, JBL, PLEASE FIX THIS STUFF!!
In order to prevent the cut out between the TV and speaker through AUX, you gotta lower the volume on the speaker and increase the volume on the TV just to get a stronger signal from the output. Cause during the quite part of the movie e.g talking, are low on signal compared to part where there’s music. If you turn the TV volume above half way it’ll fix the problem.
