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Front Wall Treatment

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Posted on August 29, 2015 at 11:56:14
computerman
Audiophile

Posts: 491
Location: Northeast
Joined: August 31, 2011
 Would love to get some feedback on what others have done for front wall treatment to help absorb the "backwave" when one does not have a choice in moving maggies into the room further. Right now my bass panels are only about a foot from the wall while mids and tweeters are about 2' and 18" respectively with the tweeters towards the center and towed in which seems to give the best imaging. Any and all comments appreciated.

 

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RE: Front Wall Treatment, posted on August 30, 2015 at 18:32:18
TitaniumTroy
Audiophile

Posts: 626
Location: Mishawaka, Indiana
Joined: October 14, 2006
 My 3.6's are about 4.5' from the points of the corners or my room. They were around 5.5" but a Maggie dealer said to move them back to improve the midbass which it did.

I have wood QRD diffusor's in each corner and on the adjoining side wall, behind the corner QRD's I have triangle bass traps floor to ceiling. Floor to ceiling traps in the rear corner's, they helped a lot with the boomy bass of the room and damping most of the ringing.

The QRD's helped with making music sound more precise or clear, and opening the soundstage width and imaging.

 

Diffusion, posted on August 31, 2015 at 06:35:15
grantv
Manufacturer

Posts: 7724
Location: B.C.
Joined: January 15, 2002



Maybe even absorption at that proximity. I'd consider asking Magnepan what they think...
I'm about 4 - 4.5' away, made diffusers per picture. System is different now, but diffusers are still there.

 

RE: Front Wall Treatment, posted on August 31, 2015 at 07:58:16
dumpingground
Audiophile

Posts: 256
Joined: February 23, 2011

1 foot is a little close. My 1.6QR are about 3" from front wall. GIK QRD diffuser directly behind the speakers.

 

RE: Front Wall Treatment, posted on September 18, 2015 at 22:05:08
jafru
Audiophile

Posts: 1
Location: So Cal
Joined: September 14, 2015
 Hi guys,
I am new to this forum, hope I'm doing this right... I am a for ever Maggie owner over 30 yrs now, started out with MG 2 them MG 2B ended up with IIIAs until recently when I bought a mint pair of 3.6's... Incidentally I installed an amazing stand that improved the sound ny a MAGNITUDE, no kidding. OK, on my front wall I have 4x8 by half inch sound absorbing panels construction grade in each corner, I covered them with a thin cloth for aesthetic purposes. Between the two panels I hung a 4x6 decorative rug as my room is 12ft wide by 16.7ft deep and the remainder 2x4ft plaster wall beneath the rug is not covered. I also have DIY bass trap boxes that run from floor to 7ft, (ceiling is 8ft) in each corner with the sound panels, all behind the Maggie's..now in all four corners I have "Room Tunes" corner tunes which are triangle shaped and behind my listening chair is the uncovered plaster wall. So essentially I have a L E D E type room. So the room is dead where it needs to be (behind speakers) and somewhat live near the listening area... This set up sounds amazing imaging is superb while mid bass and low end (down to 40hz or lower as I suspect, as far as I can tell and confirmed by other experienced audiophiles) is very tight. So the room treatment and the amazing stands just make these speakers sing, that is why I have not upgraded in 27 yrs I've been so satisfied just enjoying the music, after all, isn't that what it's all about. Oh I forgot to mention, I have not yet installed the 3.6's yet, retubing the preamp and amps..also my system is biamped, tubes on mids and highs and high current solid state amp on bass and no subs. So there you have it, that's my set up.
John

 

RE: When you can't move your panels out far enough ... , posted on September 19, 2015 at 02:42:32
andyr
Manufacturer

Posts: 12548
Location: Melbourne
Joined: September 2, 2000
 Yes, you need to do something to the front wall, to compensate.

Getting the panels out, influences the 'echo' length - ie. the time taken for the sound to go back from the panel to the wall ... and then back to the panel. This delay (of several milliseconds) is additional to the direct sound path from panel to your ears - and needs to be >5ms for best sound.

So, yes, you need to do something to the front wall. ;-))

I found in my last house that when I put some (DIY) 'Room Tunes' about 6" off the front wall and positioned so that they were in a direct line with the reflection of the ribbon (ribbons on the inside) 'rays' off the front wall to my ears ... the soundstage became much deeper.

So I would recommend you do this.

But I think you also have to do something to increase the delay for the bass panels; as others have suggested, this is by using some types of panels on the wall directly behind the bass panels.


Good luck,

Andy

 

RE: Front Wall Treatment, posted on September 19, 2015 at 15:52:13
MG-bert
Audiophile

Posts: 141
Location: Maryland
Joined: January 18, 2009
 Well, I've had success with this treatment:
MG-bert

 

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