I think Audyssey is bumping the low end flattening your overall response and the b&w sub is experiencing overexertion. You could run without audyssey and probably wouldn't have any problems. Also, you can turn the sub down but you would be missing out. Another option would be using a subsonic filter so your sub doesn't try and hit the ultra low stuff.

 

Front speakers are B&W DM600 S3, smallest in that series.


LPF/HPF : 80Hz

 



Quote:
Originally Posted by mannoiaj /forum/post/21904803


I think Audyssey is bumping the low end flattening your overall response and the b&w sub is experiencing overexertion. You could run without audyssey and probably wouldn't have any problems. Also, you can turn the sub down but you would be missing out. Another option would be using a subsonic filter so your sub doesn't try and hit the ultra low stuff.

Sorry, should have mentioned. I have the EQ turned off. I just used Audyssey to set levels and distance.


I really don't want to turn the sub down more. It is already really low. Set below 9 o'clock position. 7 o'clock is off.


What is a subsonic filter? I can guess from the meaning what it does, but where does it connect?

 

How big is your room? It's quite possible that the B&w just isn't capable enough of a subwoofer to make you happy. The 600 is a pretty basic sealed 10"er if I recall, and won't really "pump" out the bass. But, there's also a million other possible explanations.


Room placement. - your subwoofer placement is very important. Please read up on how/where to place your new sub if you haven't yet as it is one of the most important factors in bass reproduction in a home.


You don't have to worry about a subsonic filter is you're not using Audyssey to eQ with your sealed subwoofer.

 



Quote:
Originally Posted by mannoiaj /forum/post/21905035


How big is your room? It's quite possible that the B&w just isn't capable enough of a subwoofer to make you happy. The 600 is a pretty basic sealed 10"er if I recall, and won't really "pump" out the bass. But, there's also a million other possible explanations.


Room placement. - your subwoofer placement is very important. Please read up on how/where to place your new sub if you haven't yet as it is one of the most important factors in bass reproduction in a home.


You don't have to worry about a subsonic filter is you're not using Audyssey to eQ with your sealed subwoofer.

Room is 10x12x25 (h, w, d). Sweet spot, love seat, is in the middle. Dinning table in the back.


I'm usually very happy with the sub for music and movies. Just the moment in Thor the other day rattled me.


I turned down the level on the back of he sub so there was no 'groan' but then I felt like I was missing out for the rest of the film.


For this space, I feel the speakers and sub are big enough most days.

 



I know I'm bringing back an old thread. But I too have the same sub and some insight. I too followed the 12'oclock trim level guide on the sub for Audyssey, and it gave me a -15 trim in the AVR. This sub is extremely sensitive and does not apply to the general guide for trim levels.


I did what you did, played with the level until Audyssey gave me a 0 trim level in the AVR. From the first initial calibration, which gave me the -15 trim level, I knew something was off because my room shook while playing the sub test tones.

This sub is quite a powerful little 10''.


What I would suggest to you is, are you 100% positive something in your room near or around the sub isn't vibrating from the subwoofer? Picture frames, amongst other things can make some pretty nasty noises when the sub goes into action, and the source is sometimes hard to find until you really go hunting for them.


Also, depending on where you have your sub, double check your A-B EQ setting on the back of the sub itself, A is for corner placement and B is for away from wall placement.


There's always a slight chance that maybe your driver or voice-coil is faulty.


This is directly from the manual:


The subwoofer is not a THX® licensed

component, but may be used with a THX®

controller if desired.

• Set the VOLUME control initially to the

9 o’clock position.

• Set the LOW-PASS FILTER switch to

OUT.

• Set the EQ switch initially to position A.

• Set the PHASE switch initially to 0°.

• The setting of the LOW-PASS FILTER

frequency control is irrelevant.


The EQ switch alters the bass roll-off

alignment. The bass you hear is a

combination of the subwoofer plus the

effects of the room and you should choose

the position that best complements your

room and the position of the subwoofer.

Position A gives a drier alignment, more

suited to placing the subwoofer in a corner

or compensating a boomy room. Position B

is more suited to a dry room acoustic and

use away from a corner.

If you get problems with uneven bass – if

certain bass notes are exaggerated more

than others – then you probably have a

room interface problem and it is worth

experimenting with the placement of the

subwoofer. What may seem like small

changes in position – 15cm (6in) or so –

can have a profound effect on the sound.

Try raising the subwoofer clear of the floor

as well as lateral movement. The use of

multiple subwoofers can smooth the effects

of room resonances, as each subwoofer

will tend to excite resonances at different

frequencies.

 

Also, worth noting, after closely listening to mine, I too noticed this odd noise coming from the driver area. So after playing a solid 30hz note I began pushing around the aluminum ring and to my surprise with pressure the noise stopped! They must have not torqued the screws enough at the factory and over time they loosen causing the basket to reverberate off the enclosure slightly. So I got my hex kit and tightened them nice and snug and the noise is now gone gone gone. So if anyone ever reads this, try this first!

 



Quote:
Originally Posted by porschedrifter  /t/1405357/b-w-asw600-help#post_24042301


Also, worth noting, after closely listening to mine, I too noticed this odd noise coming from the driver area. So after playing a solid 30hz note I began pushing around the aluminum ring and to my surprise with pressure the noise stopped! They must have not torqued the screws enough at the factory and over time they loosen causing the basket to reverberate off the enclosure slightly. So I got my hex kit and tightened them nice and snug and the noise is now gone gone gone. So if anyone ever reads this, try this first!

Thanks. Was going to send it in. Wil try this first.

 

P.s. they loosened again and I retightened just last night. The aluminum ring is actually plastic, I took the driver completely out to make sure nothing was loose and vibrating. Visual inspection was fine, the screws do go into a threaded metal backing so they can be tightened well. Still experimenting on how much torque they really need. Some thread lock would be optimal to stop them from ever loosening again. I dabbed some glue around the threads as I was putting them in to stop them from loosening. If it happens again I'll go to thread lock. Use a bass sweep to find a good frequency that displays the rattling, for me it was the 40-30hz range. Its great to play back on repeat to troubleshoot. Not sure if its the plastic ring or the woofer basket that is reverberating but it might help to lightly glue the basket edges to the box itself.

 

The glue seems to have done the trick for good.


Sent from my LG-D801

 

Hi.

I came here for the same problem with my ASW-600's. I have two of them. Had them for quite some time but I just started using them again after a long period on the shelf due to family/new house. I just finished my cinema room and now i felt it was time to deal with this.

I tried everything. I opened them up and checked inside. Nothing seemed loose and there was no tearing in the spider or baffle. I removed the whole plastic ring. That didn't help.
However I noticed that there was less rattling sound when I applied some pressure on top of them while testing. When I stand on them while feeding them a low freq test signal they sounded perfect so I assumed it was something with either the box itself or the mounting screws for the spikes/or the spikes. I took the spikes off and put them on rubber feet instead. That helped.....!!

Well for 1 min at least. I noticed that the covers are also shaking and making a rattling sound. So now I'm left with two ASW-600 with no plastic ring, rubber feet and no cover. Sound is perfect.

Not exactly a perfect solution but at least they sound good now. It's quite an impressive little box imho. Too bad they have such poor build quality.

Have a nice day everyone and enjoy the holidays.

Merry Christmas from Norway.

 

I would say just take it all apart and glue every screw back together with some medium strength glue.
Also worth mentioning that the front grill fabric will eventually get lose from all the vibration and just wear. This was another cause of odd noise that deemed hard at first to find the source, I didn't figure it out until I removed the grill entirely. I had to stuff some hard foam in between the baffle and fabric to create more tension in the fabric. It's now solved.

 

If i may revive this thread with a question of my own regarding the ASW600 - also a proud owner here


When connecting this sub to a receiver (AVR , NAD T773 in this case, a receiver which comes with two mono subwoofer outputs) - do i need to use a cable with an Y split for the subwoofer part?
Meaning , both L+R jacks need to get plugged or just one of them?

If yes - why?
Thank you very much and regards

Attaching an internet pic of the back of the ASW600

https://www.nesovski.com/B&W/ASW600_Rear.JPG

 

If the avr has dual sub output you only need to run one mono rca to each sub.