D80 boom weird bug maybe?

[Dreaver]

Question, is it normal for my posideon d80 boom to sound low across the diffrent presets? Example, when I put music mode, sounds normal, but when I switch back to movie mode, it sounds low. Then when I turn on upmix it sounds lower, then when I turn it off, it sounds back to normal.

It does not do this when I use the TV apps like Netflix and prime video

But when im on xbox, it seems to have that weird issue, or any device technically connected to the TV

So TV apps, not affected

Input devices connected to the tv, are affected

Also to add on to this, the D80 boom has a flickering issue when using the hdmi devices on tv

Example: Xbox>TV>Soundbar

Causes sometimes flickering when switching to dolby atmos, even sometimes resulting in no sound, resulting me to restarting the device and works again

Example 2:TV>Soundbar

No flickering whatsoever and no bug of the EQ presets, only happens when a device is connected to tv itself.

EQ bug does however still be present in HDMI IN port, but not from the TV's native apps.

So this leads me to the conclusion this could be very fixable through a software update, very hopeful since it works very good using the TV native apps (netflix,prime video,youtube)

 

[Leongino]

Hi welcome the ULTIMEA family Make yourself at home

From what you describe, the issue isn’t with the D80 Boom hardware, but rather with how your TV handles audio when receiving HDMI signals from external devices (like Xbox, set-top boxes, or media players).

The volume differences and flickering (black screens or audio dropouts) are typically caused by inconsistencies in HDMI audio handshake and how different audio formats (PCM, Dolby Digital, Dolby Atmos, etc.) are interpreted.

Breakdown of the Problem

1. Sound modes have different volumes (Music, Movie, Upmix):
   • This happens only when audio comes through HDMI IN or ARC as a bitstream (Dolby, DTS, or PCM 5.1).
   • The soundbar automatically adjusts its internal gain depending on the type of audio stream.
   • When an external device (like the Xbox) switches between formats — for example, PCM ↔ Dolby Atmos — the base volume can reset or temporarily drop.
2. 
   
3. No issue with native TV apps (Netflix, Prime, YouTube):
   • The TV’s native apps send audio directly to the eARC/ARC channel, already processed by the TV’s internal system.
   • That’s why there are no volume drops or flickering issues.
4. 
   
5. Flickering or no sound when switching to Dolby Atmos (Xbox > TV > D80):
   • This is typical of an unstable HDMI handshake, especially if the cable isn’t a certified HDMI 2.1 or High-Speed with Ethernet cable.
   • When the audio format changes (for instance, PCM to Dolby MAT or Dolby Atmos), the signal renegotiates, which can cause blackouts or total audio loss until you restart the device.

Recommended Fixes

1. Set Xbox audio to “Bitstream” with format “Dolby Digital” (not “Atmos”) and test if the volume stops fluctuating.
   If that helps, the issue is likely with the TV’s pass-through handling of Atmos audio.
2. Connect the D80 Boom directly to the Xbox using HDMI IN, then connect the soundbar’s HDMI OUT (eARC) to the TV.
   This allows the soundbar to decode Dolby Atmos directly, without relying on the TV’s audio pass-through.
3. Use certified HDMI 2.1 cables (Ultra High Speed with eARC support).
   Many flickering or dropout issues come from cables that can’t handle the required Dolby Atmos bandwidth.
4. Temporarily disable “HDMI-CEC” or “HDMI Control” on the Xbox or TV and test again.
   Some systems mismanage source or volume switching when CEC interference occurs.
5. Wait for or request a firmware update:
   Your conclusion is spot on — since the issue doesn’t occur with native apps, it’s 100% fixable via software, most likely through a firmware update that stabilizes HDMI input handling.

I hope this can help you

 

[Dreaver]

I will try those options out, I will give an update soon!

 

[Dreaver]

Hi welcome the ULTIMEA family Make yourself at home

From what you describe, the issue isn’t with the D80 Boom hardware, but rather with how your TV handles audio when receiving HDMI signals from external devices (like Xbox, set-top boxes, or media players).

The volume differences and flickering (black screens or audio dropouts) are typically caused by inconsistencies in HDMI audio handshake and how different audio formats (PCM, Dolby Digital, Dolby Atmos, etc.) are interpreted.

Breakdown of the Problem

1. Sound modes have different volumes (Music, Movie, Upmix):
   • This happens only when audio comes through HDMI IN or ARC as a bitstream (Dolby, DTS, or PCM 5.1).
   • The soundbar automatically adjusts its internal gain depending on the type of audio stream.
   • When an external device (like the Xbox) switches between formats — for example, PCM ↔ Dolby Atmos — the base volume can reset or temporarily drop.
2. 
   
3. No issue with native TV apps (Netflix, Prime, YouTube):
   • The TV’s native apps send audio directly to the eARC/ARC channel, already processed by the TV’s internal system.
   • That’s why there are no volume drops or flickering issues.
4. 
   
5. Flickering or no sound when switching to Dolby Atmos (Xbox > TV > D80):
   • This is typical of an unstable HDMI handshake, especially if the cable isn’t a certified HDMI 2.1 or High-Speed with Ethernet cable.
   • When the audio format changes (for instance, PCM to Dolby MAT or Dolby Atmos), the signal renegotiates, which can cause blackouts or total audio loss until you restart the device.

Recommended Fixes

1. Set Xbox audio to “Bitstream” with format “Dolby Digital” (not “Atmos”) and test if the volume stops fluctuating.
   If that helps, the issue is likely with the TV’s pass-through handling of Atmos audio.
2. Connect the D80 Boom directly to the Xbox using HDMI IN, then connect the soundbar’s HDMI OUT (eARC) to the TV.
   This allows the soundbar to decode Dolby Atmos directly, without relying on the TV’s audio pass-through.
3. Use certified HDMI 2.1 cables (Ultra High Speed with eARC support).
   Many flickering or dropout issues come from cables that can’t handle the required Dolby Atmos bandwidth.
4. Temporarily disable “HDMI-CEC” or “HDMI Control” on the Xbox or TV and test again.
   Some systems mismanage source or volume switching when CEC interference occurs.
5. Wait for or request a firmware update:
   Your conclusion is spot on — since the issue doesn’t occur with native apps, it’s 100% fixable via software, most likely through a firmware update that stabilizes HDMI input handling.

I hope this can help you

So update

1. Xbox does not show "bitstream", only shows "dolby atmos for home theater (HDMI only)" thats what I use in terms of that

2.I did plug in directly to the D80 boom, fixed the screen flickering, but not the EQ Bug

3. I have certified HDMI 2.1 cables that have that sticker that says "certified high speed"

4.HDMI cec I disabled it, still does that weird flickering

5. I have already requested a firmware update to see if it fixes all these issues occurring, so hopefully it does.
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those are all the things I did and also power cycled both the soundbar and the tv aswell, same with the xbox. So hopefully it gets fixed after an update, or if there is anything else for me to try please let me know in the meantime, thanks in advance!