Higher hz on sub than on speakers

[Promso]

Hi Guys,
Maybe I’m blind, but cannot find how to make sub playing lets say max 70hz and speakers lowest 50hz..?
I can just choose exact hz to crossover, why we cannot adjust each?

 

[merifon]

Since it is not a good practice, it is often not allowed by design.
Hit one to educate a hundred...

 

[slartibartfast]

Hi Guys,
Maybe I’m blind, but cannot find how to make sub playing lets say max 70hz and speakers lowest 50hz..?
I can just choose exact hz to crossover, why we cannot adjust each?

There is an option in subwoofer settings to send the full frequency range to the subwoofer while the crossover just acts as a high pass filter for the main speakers. You can then use the low pass filter on the subwoofer to control the range of the sub.

 

[Promso]

Since it is not a good practice, it is often not allowed by design.
Hit one to educate a hundred...

Well when im most often listen music not too laud, this would work for me. If i make my speakers actually playing any hz it already sounds better. If i could stop them on some exact hz that would be great. And for sure my sub could participate in a bit higher hz..

 

[Promso]

There is an option in subwoofer settings to send the full frequency range to the subwoofer while the crossover just acts as a high pass filter for the main speakers. You can then use the low pass filter on the subwoofer to control the range of the sub.

Yeah, that might work! Thanks man

 

[merifon]

Well when im most often listen music not too laud, this would work for me. If i make my speakers actually playing any hz it already sounds better. If i could stop them on some exact hz that would be great. And for sure my sub could participate in a bit higher hz..

Generally this could mean a temporal and therefore phase misalignment, which should be investigated, to achieve much better results.

 

[Promso]

Generally this could mean a temporal and therefore phase misalignment, which should be investigated, to achieve much better results.

I tried to play around today more. Maybe it started to sound similar or very slightly better when turning of main speakers on lower hz. But to be honest I don’t feel good enough improvement when adding sub in general, unless i listen some hip hop and turn sub sound on even more than I would want on other genres including electronic. Maybe its just too small sub for my speakers (AE1) and my room(42m2) to feel big improvement. Now Im testing JL d108. Probably would need to try something like Arendal 1723 1s.

These small AE1 speakers has surprisingly nice, clear and punchy base.

 

[Incognito]

I don’t feel good enough improvement when adding sub in general, unless i listen some hip hop

Most of what you hear easily ("psychoacoustics") is in the midrange of frequencies (300-4,000 Hz), particularly at low volume. For example, with midranges of about 60 dB SPL the bass frequency of 40Hz (about low E on a bass guitar) has to be at about 75 dB SPL to sound equally as loud as the 60 dB SPL midrange. Hence the value of having a subwoofer to increase the SPL (Sound Pressure Level) if the music being listened to has significant low frequencies below 70HZ or 80HZ as a part of the mix. So a subwoofer is an important part of listening to EDM, Hip Hop and the attendant low frequency 808 sound (google Roland TR-808) to be able to hear the mix as intended. (Even if the low-rider going down your street can be annoying as hell. LOL) For other types of music for example acoustic, choral, much of orchestral music, even pop music, etc., a subwoofer is superfluous since the sub 80HZ frequencies either do not exist or are not a significant part of the mix and can easily be handled by your mains.

Bottom line is if you like the sound you are getting that is what is important. Don't fret over adding the sub if you are enjoying the sound you are getting. Just use it when needed.

Note one other point. The frequencies attenuated by the crossovers most often roll off and are not "bright lines."

 

[canard]

Most of what you hear easily ("psychoacoustics") is in the midrange of frequencies (300-4,000 Hz), particularly at low volume. For example, with midranges of about 60 dB SPL the bass frequency of 40Hz (about low E on a bass guitar) has to be at about 75 dB SPL to sound equally as loud as the 60 dB SPL midrange. Hence the value of having a subwoofer to increase the SPL (Sound Pressure Level) if the music being listened to has significant low frequencies below 70HZ or 80HZ as a part of the mix. So a subwoofer is an important part of listening to EDM, Hip Hop and the attendant low frequency 808 sound (google Roland TR-808) to be able to hear the mix as intended. (Even if the low-rider going down your street can be annoying as hell. LOL) For other types of music for example acoustic, choral, much of orchestral music, even pop music, etc., a subwoofer is superfluous since the sub 80HZ frequencies either do not exist or are not a significant part of the mix and can easily be handled by your mains.

Bottom line is if you like the sound you are getting that is what is important. Don't fret over adding the sub if you are enjoying the sound you are getting. Just use it when needed.

Note one other point. The frequencies attenuated by the crossovers most often roll off and are not "bright lines."

your numbers are wrong.....invites you to check the range/frequency of the different instruments of the "classical" orchestra etc.
(moreover in general if in general we easily use the low range of an instrument..we generally use much less the theoretical high ends of most...It is in acoustics that I will essentially encounter low frequencies but above all... participate in extreme bass precisely "in giving" the volume of spaces, the volume of instruments ...etc.)

 

[Matt_Holland]

Since it is not a good practice, it is often not allowed by design.
Hit one to educate a hundred...

Actually this would be a good option to have since you might need different roll off frequencies to allow for the actually acoustic characteristics of the speaker, sub and room response.
Yes, it’s a more advanced option, but any good bass management system will allow separate crossover frequencies (and attenuation rates, and fully adjustable phase) of speakers and sub. Maybe a tick box would open the advanced features and keep the simple option for the “uneducated”

 

[Incognito]

canard, Thanks for the chart. It helps explain what I was trying to say. I apologize if I was not clear. Let me clarify. I did not say that there are no orchestral instruments that can play notes below 80HZ. And more importantly to the OP below 50 HZ, since they say their mains are rated to 50HZ. But that most of "...the sub 80HZ frequencies either do not exist or are not a significant part of the mix and can easily be handled by your mains."

Here is the chart you uploaded showing the range of frequencies of the fundamentals of orchestral instruments.
Below 50Hz: Above 50 Hz:



As you can see most of the frequency range of orchestral instruments lies above 50HZ. This is above the specs of the OP's mains. The OP also stated "when im most often listen music not too loud." So for most of their musical enjoyment the sub may not be essential. In cases where they want to listen at louder volumes, listen to Tocata and Fugue in D minor, Rachmaninoff or the Beastie Boys, the OP can always rely on the sub they apparently have. My point being that a sub is not absolutely necessary to enjoy many types of music unless the mix contains contains a significant amount of low bass frequencies that are essential to the music in question. The sub does not improve the sound of any of the frequencies above the crossover frequency except in instances where the sub is taking stress off the mains. Orchestral music has been listened to enjoyably for decades without subwoofers. It sounded like the OP was expecting an improvement in sound by adding the sub even though the music being listened to was not a bass heavy mix. Cheers!

 

[canard]

you are on the wrong track... it is an important characteristic of this type of music... you can of course do without a subwoofer... but in no way affirm that the extension in the bass has no interest in acoustics when precisely the area where the most interest.....
and your figure of """80hz"" even more nonsense...

 

[Incognito]

but in no way affirm that the extension in the bass has no interest in acoustics

Where did I say this? I don't think you understand what I wrote or the point I was trying to make. Again I apologize if I am unable to write clear enough for you to comprehend.