Behind ref mon question

[archive]

From: "Sean Roberts" <krazydog@s...>
Date: Wed Jan 26, 2000 5:28 am
Subject: Behind ref mon question

HI
I've seen a few posts about deadening the area behind the reference
monitors.
My room is not treated at all & has 1 inch unfinished pine on the walls.
I have my monitors out from the wall about 15 inches
but was wondering if I should deaden the wall behind them?
There is a picture hanging directly behind them right now.
Also I'm concerned about my rack which is on the left side & comes
up to the same height as the speaker, will this give me reflection problems?
I've done a very rough sketch of my layout & posted it at this URL
http://www3.sympatico.ca/krazydog/Music/Seansstudio.gif

Any tips?
-Should I ditch the pic & hang something to deaden the area?
-How big should it be?
-What should I use?
-Should the ceiling directly above the speakers be deadened as well?
-Should I get rid of the rack? I could probably move some gear & lower it.
-If I deaden the area can the speakers be pushed back against the wall?

Thanks
Sean

[archive]

From: "Sean Roberts" <krazydog@s...>
Date: Fri Jan 28, 2000 6:04 pm
Subject: Re: Behind ref mon question

All these brilliant minds & no tips?
Come on, some one must have some insight they could spare? <G>

[archive]

From: "Dan Nelson" <dprimary@h...>
Date: Sat Jan 29, 2000 1:34 pm
Subject: Re: Behind ref mon question

If you think the rack is a problem you could put a piece of foam on the side
that faces the monitor, that should reduce
and reflections that may be a problem. I prefer to keep speakers away form
any walls if possible, it tends to cause bass
problems.
There is an article in the studiotips site on placement of absorption
materials that will help you.
For experimentation purposes the foam sold for bed pads may be used to get
some ideas of what will help in your
room. You may find you need to put drapes on the french doors with similar
treatment on the opposite wall

Do you have any bass problems in the room?

Dan Nelson

[archive]

From: perrault@i... (David Perrault)
Date: Sun Jan 30, 2000 1:39 am
Subject: Re: Behind ref mon question

>,,,,,All these brilliant minds & no tips?,,,,,,
>Sean Roberts

Fair enough. Maybe because it's a very basic aspect of any monitoring
position. The RFZ that would usually lead the most workable results
for a basic mix position are standard fare in any reading you should
have done in this area.

Here are my tips. Build bass traps in your corners behind the
monitors. Get a mirror, a friend, and find out where sound can
reflect from the monitors to the mix position. Go buy some 703 and
some wood and put it up - four inches would be a good place to start.

Without writing a book, that's a pretty good place to start.

DP

[archive]

From: GonÁalo Coelho <goncalo_coelho@h...>
Date: Sun Jan 30, 2000 12:08 am
Subject: Re: Behind ref mon question

Dan Nelson wrote:
>>For experimentation purposes the foam sold for bed pads may be used to get
some ideas of what will help in your
room. <<

Dan, do you have any NRC tables of that particular type of foam?
How does it compares to polyurethane foam?

GonÁalo Coelho

[archive]

From: "Dan Nelson" <dprimary@h...>
Date: Sun Jan 30, 2000 8:48 am
Subject: Re: Re: Behind ref mon question

It is polyurethane foam, it should compare to coefficients of 1 to 2" sonex.
It not very attractive (usually tan in color) or fireproof so I would only
use it to make some tests.

Dan Nelson

[archive]

From: GonÁalo Coelho <goncalo_coelho@h...>
Date: Mon Jan 31, 2000 6:05 am
Subject: Re: Re: Behind ref mon question

Dan Nelson wrote:

>>It is polyurethane foam, it should compare to coefficients of 1 to 2"
sonex.
It not very attractive (usually tan in color) or fireproof so I would only
use it to make some tests.<<

So its only disadvantages arent acoustically related, right?
I was planning on using 8" of that same "bed pads" foam in front of some
guitar speakers for some noise control. Do you think its worth it even
though this type of foam is really cheap (compared to "acoustical foam") ?

GonÁalo Coelho

[archive]

From: Brian Marston <marstonb@z...>
Date: Mon Jan 31, 2000 10:44 am
Subject: Re: Re: Re: Behind ref mon question


An acoustic foam is an open pore foam - the pores interconnect.

A non-acoustic foam is a closed pore foam - the pores are separate and
sealed.

the open pore structure provides the acoustic properties