is there app or support on KDE to actually have visual indication to setup subwoofer. For now it seems when i enable subwoofer settings from remote wheel all sounds go terrible and visual indicator is not working anymore after that and sound is really wierd and have to reset all settings as hard reset
I’m not sure ‘subwoofer’ is the right term here - Logi Z407 don’t do ‘subwoofer’ they just do two small speakers with no bass, and a single bass driver… it’s a ‘woofer’, not a ‘subwoofer’.
With Plasma, you can look at Audio in settings - under Playback, where you can have a separate subwoofer channel as part of a multi-channel setup.
However, the Logi Z407 only accepts stereo inputs, and the ‘bass’ or ‘sub’ elements are handled by external equipment (for example, I use a 2.1 channel Class-D amplifier to drive a pair of Monitor Audio speakers and a 10 inch Polk subwoofer connected passively).
You can look at ‘EasyEffects’ if you want to twiddle with the output sound, otherwise it’ll just output the full spectrum unadulterated (HiFi) sound without any effects.
I’m sorry, I believe you have a different Logi Z407 and have been misled in believing that they are actually a serious audio device by the marketing blurb…
The drivers are actually specified as 5.25" (13.34cm) down firing for the bass unit (which is popularly, and definitely FALSELY described as a ‘sub-woofer’. They are also quoting (generic/meaningless) numbers for ‘power’ into 4 ohm speakers. Take them for what they are, but ‘subwoofer’ is just the wrong word - and we should resist Post-Truth marketing just as we should resist any other dishonest marketing practices.
Logitech Z407 Bluetooth Computer Speakers - 80 Watts, 40 Hz to 20 kHz.
Compare this with a budget bookshelf speaker - like a ten year old pair of Monitor Audio speakers (cost price around $185) which come with a 6.5" (reflex loaded) driver for each side, and a reflex bass frequency response quoted as 42Hz?
This would be a ridiculous comparison, and yet even such bookshelf speakers require a proper subwoofer to gain any audible sub-bass.
A 10" sub gives reasonable output down to maybe 32Hz - and the actual container is around 40cm or 16 inches cube…
The connection is described as a 2xRCA, which means Stereo input (not 2.1 channel input) so, as with my 2.1 channel amplifier, it takes in only stereo audio, and it will have an internal crossover. As the speakers are fixed, it is unlikely that they also offer controls to vary the frequency of the crossover, but there is likely a control to vary the gain of the bass speaker - and it will work best if turned down.
The ‘Frequency Response’ is similar to a bookshelf speaker, quoted as ‘40Hz to 20kHz’ but omitting to mention that (as normal) responses are usually considered within 3dB limits, but often quoted in absolute terms.
Additionally, whilst my bookshelf speakers are quoted 42Hz at -6dB, but then only 55Hz at -3dB… whilst they do give decent bass, they do not give any meaningful SUB bass for electronic music… For that you need to add a substantially more massive ‘sub-woofer’.
But Logitech omit to include this information… which they CERTAINLY would if it were anything to advertise - meaning it’s not the case at all.
So what you have is a stereo input desktop speaker with two mid-range speakers to give stereo effect and a single woofer to offer some bass.
Your photograph emphasises this point showing a box too small to offer any meaning extension for deep bass… and this is not to be expected for a complete setup costing less than a cheap pair of speakers with no amplifier.
EasyEffects is the way to go to try to tailor the sound to your room, but you will not get more meaningful bass out of that box.
I have way too much bass and the comparison to studio or bookshelf speakers is just meaningless and way off to the topic. I have sub level adjustment from logi wireless wheel and connection to source is from bluetooth.
So how you got idea it is still 2 channels? Yes 2 channels left right is for speakers and one more for sub and BT usually supports these just linux shows it 2 channel stereo.
I am fine on this setup since it is on my working setup so no need to start blaming or under justify my setup since you dont even know how it sounds or works.
On your link it clearly states channel is configured 2.1 so linux/kde drivers are for stereo
OUTPUT is 2.1, but input is dual channel. There is no dedicated LFE channel, the stereo channels will have an element filtered off which is played MONO through the bass speaker, and then pass on mid to high range frequencies to the satellite speakers.
‘sub level’ adjustment is just a ‘bass’ level adjuster - and yes, if it isn’t set low it will sound muddy and like ‘too much bass’.
well got it
and all i wanted to ask for visual indicator for bass level adjustment similar for volume control.