new subwoofer help

[giggsy1977]

Rooms have peaks and nulls. Square rooms are notoriously difficult for home cinema sound.

I would play some music with strong bass that you familiar with and sit where you normally would. If the bass is weak of overbearing, move the sub to a different location and try again. The 'subwoofer crawl' works similarly in that the sub is placed in the main listening position, music played and you crawl around the room until the bass sounds best, then mark that spot and put the sub there.

Then run Audessey on the Denon (sub volume at - 10 to - 15) and see what dB the Denon sets the sub to (something around -5db would be a good result). That gives you some headroom if you wanted to turn it up.

 

[hardcore_gamer29]

Well, that could be a number of possibilities…the woofer may be out of phase with your main speakers. Try the setting for that purpose. (When you’re right in front of the sub, you hear its direct output, not how it reacts with the room)

Or the woofer might be better in a different position, or your chair is in a ‘dip’ due to your room dimensions, versus the wavelength of the notes you’re missing.

Just experiment - you can’t break anything. Move the speakers a bit at a time while playing bass rich music, preferably with you seated and a friend/partner doing the moving.

hi i did sub crawl and put the sub there but deep bass is good now but mid level is missing. also in stereo mode 2.1 music it feels bass is late delay can you help? denon x4800h

 

[nopiano]

hi i did sub crawl and put the sub there but deep bass is good now but mid level is missing. also in stereo mode 2.1 music it feels bass is late delay can you help? denon x4800h

I’m afraid that’s rather beyond what I can do from behind a keyboard, other than suggest trying midway between where you have it now and where it was originally.

 

[giggsy1977]

Have you tried the SVS app? You can tweak frequencies up and down.

Every room interacts differently to bass. The lower frequencies have a long wavelength so bounce all over the place.

You can alter the phase in 1 degree increments so that could be a place for starting?

 

[hardcore_gamer29]

I’m afraid that’s rather beyond what I can do from behind a keyboard, other than suggest trying midway between where you have it now and where it was originally.

thaank you will try i will also add 2nd pb 2000 pro later

 

[hardcore_gamer29]

Have you tried the SVS app? You can tweak frequencies up and down.

Every room interacts differently to bass. The lower frequencies have a long wavelength so bounce all over the place.

You can alter the phase in 1 degree increments so that could be a place for starting?

tried phase slowly from o to 180 felt no difference

 

[daytona600]

IMHO never used a Sub in a small room
Google room Nodes/Null/Standing waves , Deep bass you need a large room
Ideally for sub sonics under 20hz you need a 80/100feet room with multiple ( 2/4/8 Subs )
40 Hz wavelength of 8.58 meters/28.15 feet
20 Hz wavelength of 17.16 meters/56.3 feet.

View: https://www.youtube.com/watch?v=dllK75jr5us

 

[giggsy1977]

tried phase slowly from o to 180 felt no difference

Have a look at the PEQ. You can raise and lower frequencies to deal with nulls and peaks.

With a sub, location within the room can turn a poor sounding sub into a good one with small movements.

I would try it in as many locations in the room as possible.

When you ran Audessey, what level did it return for the sub?

What volume do you have the sub set to?

 

[hardcore_gamer29]

Have a look at the PEQ. You can raise and lower frequencies to deal with nulls and peaks.

With a sub, location within the room can turn a poor sounding sub into a good one with small movements.

I would try it in as many locations in the room as possible.

When you ran Audessey, what level did it return for the sub?

What volume do you have the sub set to?

i think in denon sub is at -2db

 

[hardcore_gamer29]

here is my video of svs sound isolation pads. will install tomorrow

View: https://www.youtube.com/watch?v=uNxuSynO7Fg

 

[giggsy1977]

i think in denon sub is at -2db

What's the volume on the sub itself?

 

[hardcore_gamer29]

What's the volume on the sub itself?

-18db

 

[giggsy1977]

Probably about right for a room that size.
If you do raise it to -12db, how does it sound?

If there is any boom at a certain frequency use the PEQ to reduce the output at that frequency so the output is as flat as possible.

Have you tried other positions in the room?

How many places did you put the mic when you ran Audessey?

 

[hardcore_gamer29]

Probably about right for a room that size.
If you do raise it to -12db, how does it sound?

If there is any boom at a certain frequency use the PEQ to reduce the output at that frequency so the output is as flat as possible.

Have you tried other positions in the room?

How many places did you put the mic when you ran Audessey?

my room is so small 11x11 i cant do audesey setup in 8 different positions. damn! can you tell 1st position from back wall how much minimum it should be inches ? can you tell what peq is and how to use it

 

[giggsy1977]

You don't need to do 8. One, two, or three is probably enough. The microphone should be positioned at ear height where you sit, pointing up to the ceiling. Make sure the room is absolutely quiet and you aren't in it when you run Audessey.

The PEQ in the app has some videos online. Can't do much with mine at the moment as my sub is not at home (house works).

 

[giggsy1977]

There are three to play around with and you can boost and reduce frequencies to deal with boom and nulls.

You just turn it on with the slider in the app and raise and lower the values as you see appropriate.

You'll get the idea fairly quickly I reckon.

 

[hardcore_gamer29]

There are three to play around with and you can boost and reduce frequencies to deal with boom and nulls.

You just turn it on with the slider in the app and raise and lower the values as you see appropriate.

You'll get the idea fairly quickly I reckon.

where i put my sub very first time it was completely null though i out sub to 100% wow. regarding auddeseey setup denon asks for 8 positions

 

[giggsy1977]

It asks for eight positions, which are supposed to be recorded very close to each other, but in an 11 x 11 room I think three would be enough. The first one is the important one, the others less so.

Can you post your Audessey results?

 

[hardcore_gamer29]

It asks for eight positions, which are supposed to be recorded very close to each other, but in an 11 x 11 room I think three would be enough. The first one is the important one, the others less so.

Can you post your Audessey results?

i can post buT the thing is i did sub crawl again today and position was just left to my chair. Then again deep bass is good but in my indian movies bluray mid or high level is missing AGAIN.

 

[Messiah]

I wouldn't have it placed under/enclosed like that.

Are you able to place it somewhere where it will not be enclosed?

Have you tried it with the bungs taken out?

Personally I would remove the bungs, then see how it sounds in various places and then re-run the calibration.

To add, I tune my sub (set crossover and volume levels) using a few music tracks and once I am happy it sounds good with music I then let the calibration do its thing for surround duties.

 

[giggsy1977]

Good advice from @Messiah as expected!
Running the sub in sealed mode will not give you the full range of the sub.

In a room your size, running it with the bungs in the ports (so the cabinet is sealed) should make that bass feel more taught with less low rumble.

What crossover do you have?

 

[hardcore_gamer29]

Good advice from @Messiah as expected!
Running the sub in sealed mode will not give you the full range of the sub.

In a room your size, running it with the bungs in the ports (so the cabinet is sealed) should make that bass feel more taught with less low rumble.

What crossover do you have?

crossover is 80hz and LFE only mode. but in 2 channel settings i set it to 80hz and lfe+mains. but still i am not satisfied with bass. i cant put it in many places as space is limited and its big arse . I am getting rid of this pc table which is big soon then i will also go with wall mount for tv then i will have plenty of space ok if you say i will run it as ported only and remove those foams

 

[hardcore_gamer29]

I wouldn't have it placed under/enclosed like that.

Are you able to place it somewhere where it will not be enclosed?

Have you tried it with the bungs taken out?

Personally I would remove the bungs, then see how it sounds in various places and then re-run the calibration.

To add, I tune my sub (set crossover and volume levels) using a few music tracks and once I am happy it sounds good with music I then let the calibration do its thing for surround duties.

i gor frustated yesterday as it always gave deep bass but midlevel was always misssing. I have reset my denon receiver now all settings, I will try it as ported now and remove the foam. The main thing is i even cant lift this up alone damn! Can you tell precise settings for crossover for dali opticon 2 mk2 subwoofer phase 0?
3 positions that i tried in front of tv unit. 2nd position bass was deep but mid level bass was very low i dont know where do i put it where every level of bass is felt like ldeep
NOTE: FIRST POSITION WAS HAVING COMPLETE NULL no bass

 

[giggsy1977]

The Dalis have a crossover around 60hz I think. I tend to set crossover about 10hz above the lowest my speakers can operate at.

However, the speaker crossover and LFE settings are separate. The frequency cut off for the speakers should really be set to 80hz, while the LFE setting should be set to 120hz.

Those are recommended settings, but play around a little from figures above and see what sounds best to you.

 

[hardcore_gamer29]

The Dalis have a crossover around 60hz I think. I tend to set crossover about 10hz above the lowest my speakers can operate at.

However, the speaker crossover and LFE settings are separate. The frequency cut off for the speakers should really be set to 80hz, while the LFE setting should be set to 120hz.

Those are recommended settings, but play around a little from figures above and see what sounds best to you.

crossover was already at 80 in front speakers subwoofer lfe also at 120hz and set as lfe only. but i am not happy how do you recommend settings now start with what setting first to alteR? Also can you confirm if this pb 2000 pro is damaged? i installed isloation pads and saw this crack line in exact middle part. of bottom of body of woofer