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EQing your room [message #73530] Wed, 04 October 2006 05:42 Go to next message
brandon[2] is currently offline  brandon[2]   UNITED STATES
Messages: 380
Registered: June 2006
Senior Member
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All,

I know I have heard that inserting Eqs before your monitors to=20
counteract room modes/coloration is a technique many=20
shy away from. I know the best way to treat this is by speaker placement
and sound absorption. However, when would be an exceptable time to do =
this?
What are the pros and cons?
The purpose I would be doing it is to bring the rooms freq response =
flatter.


--=20
Thanks,

Brandon
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<DIV><FONT face=3DArial>All,</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>I know I have heard that inserting Eqs before =
your=20
monitors to </FONT></DIV>
<DIV><FONT face=3DArial>counteract room modes/coloration is a technique =
many=20
</FONT></DIV>
<DIV><FONT face=3DArial>shy away from. I know the best way to treat this =
is by=20
speaker placement</FONT></DIV>
<DIV><FONT face=3DArial>and sound absorption. However, when would be an =
exceptable=20
time to do this?</FONT></DIV>
<DIV><FONT face=3DArial>What are the pros and cons?</FONT></DIV>
<DIV><FONT face=3DArial>The purpose I would be doing it is to bring the =
rooms freq=20
response flatter.</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV><FONT face=3DArial>
<DIV><BR>-- <BR>Thanks,</DIV>
<DIV>&nbsp;</DIV>
<DIV>Brandon </FONT></DIV></BODY></HTML>

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Re: EQing your room [message #73535 is a reply to message #73530] Wed, 04 October 2006 06:56 Go to previous messageGo to next message
Don Nafe is currently offline  Don Nafe   UNITED STATES
Messages: 1206
Registered: July 2005
Senior Member
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from my understanding it is not agood practice period.

my room cost roughly $500 to treat with 4 - 8' X 2' 3" thick corner =
panels...8 - 2' X 4' panels, 4 - 2' X 4' ceiling panels and a 6' X 4' =
end wall panel...cleaned up the room's frequency response by at least =
100%

the other thing is speaker placement...at John Sayers forum Barefoot =
posted a 2D wall bounce calculator program that helped me find the =
optimum placement for my speakers...39" off the ground 25" off the side =
walls and 31" off the front wall spaced between 6' and 6'6" apart


Don

=20
"Brandon" <a@a.com> wrote in message news:4523aa69$1@linux...
All,

I know I have heard that inserting Eqs before your monitors to=20
counteract room modes/coloration is a technique many=20
shy away from. I know the best way to treat this is by speaker =
placement
and sound absorption. However, when would be an exceptable time to do =
this?
What are the pros and cons?
The purpose I would be doing it is to bring the rooms freq response =
flatter.


--=20
Thanks,

Brandon
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charset=3Diso-8859-1">
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<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>from my understanding it is not agood =
practice=20
period.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>my room cost roughly $500 to treat with =
4 - 8' X 2'=20
&nbsp;3" thick corner panels...8 - 2' X 4' panels, 4 - 2' X 4' ceiling =
panels=20
and a 6' X 4' end wall panel...cleaned up the room's frequency response =
by at=20
least 100%</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>the other thing is speaker =
placement...at John=20
Sayers forum Barefoot posted a 2D wall bounce calculator program that =
helped me=20
find the optimum placement for my speakers...39" off the ground&nbsp; =
25" off=20
the side walls and 31" off the front wall spaced between 6' and 6'6"=20
apart</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2><BR>Don</DIV>
<DIV>&nbsp;</DIV>
<DIV></FONT>&nbsp;</DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV>"Brandon" &lt;<A href=3D"mailto:a@a.com">a@a.com</A>&gt; wrote in =
message=20
<A href=3D"news:4523aa69$1@linux">news:4523aa69$1@linux</A>...</DIV>
<DIV><FONT face=3DArial>All,</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial>I know I have heard that inserting Eqs before =
your=20
monitors to </FONT></DIV>
<DIV><FONT face=3DArial>counteract room modes/coloration is a =
technique many=20
</FONT></DIV>
<DIV><FONT face=3DArial>shy away from. I know the best way to treat =
this is by=20
speaker placement</FONT></DIV>
<DIV><FONT face=3DArial>and sound absorption. However, when would be =
an=20
exceptable time to do this?</FONT></DIV>
<DIV><FONT face=3DArial>What are the pros and cons?</FONT></DIV>
<DIV><FONT face=3DArial>The purpose I would be doing it is to bring =
the rooms=20
freq response flatter.</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp;</DIV><FONT face=3DArial>
<DIV><BR>-- <BR>Thanks,</DIV>
<DIV>&nbsp;</DIV>
<DIV>Brandon </FONT></DIV></BLOCKQUOTE></BODY></HTML>

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Re: EQing your room [message #73539 is a reply to message #73530] Wed, 04 October 2006 07:36 Go to previous messageGo to next message
DC is currently offline  DC
Messages: 722
Registered: July 2005
Senior Member
The only exception is for large bi-amped (or more) monitors where
they will not even be accurate w/o EQ. Then we spend a long
time, preferably with very sophisticated measurement and
analysis tools, and a good digital processor / x-over to get it
just right.

Never, ever use a graphic or even an analog parametric on
nearfield/midfield studio monitors. Fix the room, fix the
mounting system, lose the big wooden console, etc etc, but
analog EQ's sound awful compared to fixing the problems and
running your monitors without them.

Unless of course, some bonehead studio owner is waving lots of
money in your face and won't accept any other solution...

(grin)

DC

"Brandon" <a@a.com> wrote:
>
>
>All,
>
>I know I have heard that inserting Eqs before your monitors to=20
>counteract room modes/coloration is a technique many=20
>shy away from. I know the best way to treat this is by speaker placement
>and sound absorption. However, when would be an exceptable time to do =
>this?
>What are the pros and cons?
>The purpose I would be doing it is to bring the rooms freq response =
>flatter.
>
>
>--=20
>Thanks,
>
>Brandon
>
><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
><HTML><HEAD>
><META http-equiv=3DContent-Type content=3D"text/html; =
>charset=3Diso-8859-1">
><META content=3D"MSHTML 6.00.2800.1476" name=3DGENERATOR>
><STYLE></STYLE>
></HEAD>
><BODY bgColor=3D#ffffff>
><DIV><FONT face=3DArial>All,</FONT></DIV>
><DIV><FONT face=3DArial></FONT> </DIV>
><DIV><FONT face=3DArial>I know I have heard that inserting Eqs before =
>your=20
>monitors to </FONT></DIV>
><DIV><FONT face=3DArial>counteract room modes/coloration is a technique
=
>many=20
></FONT></DIV>
><DIV><FONT face=3DArial>shy away from. I know the best way to treat this
=
>is by=20
>speaker placement</FONT></DIV>
><DIV><FONT face=3DArial>and sound absorption. However, when would be an
=
>exceptable=20
>time to do this?</FONT></DIV>
><DIV><FONT face=3DArial>What are the pros and cons?</FONT></DIV>
><DIV><FONT face=3DArial>The purpose I would be doing it is to bring the
=
>rooms freq=20
>response flatter.</FONT></DIV>
><DIV><FONT face=3DArial></FONT> </DIV><FONT face=3DArial>
><DIV><BR>-- <BR>Thanks,</DIV>
><DIV> </DIV>
><DIV>Brandon </FONT></DIV></BODY></HTML>
>
>
Re: EQing your room [message #73546 is a reply to message #73530] Wed, 04 October 2006 09:01 Go to previous messageGo to next message
&quot;Kris&quot; . is currently offline  &quot;Kris&quot; .
Messages: 27
Registered: June 2006
Junior Member
It's okay to EQ your room to fix speaker boundary interface problems, but
NOT to fix room mode problems.

If your speakers are too close to a wall, you might need a little cut on
the low end to compensate for the extended baffle that the wall makes....using
a shelf EQ here is fine, it's exacly what the acoustic compensation switches
on the backs of some active monitors are intended for.

Don't bother trying to EQ out peaks and valleys caused by room modes...they
are only solved by trapping and room dimension changes. Besides that, you
can only EQ the peaks, and can't do anything about the nulls.... best not
to try.

Cheers,

Kris


"Brandon" <a@a.com> wrote:
>
>
>All,
>
>I know I have heard that inserting Eqs before your monitors to=20
>counteract room modes/coloration is a technique many=20
>shy away from. I know the best way to treat this is by speaker placement
>and sound absorption. However, when would be an exceptable time to do =
>this?
>What are the pros and cons?
>The purpose I would be doing it is to bring the rooms freq response =
>flatter.
>
>
>--=20
>Thanks,
>
>Brandon
>
><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
><HTML><HEAD>
><META http-equiv=3DContent-Type content=3D"text/html; =
>charset=3Diso-8859-1">
><META content=3D"MSHTML 6.00.2800.1476" name=3DGENERATOR>
><STYLE></STYLE>
></HEAD>
><BODY bgColor=3D#ffffff>
><DIV><FONT face=3DArial>All,</FONT></DIV>
><DIV><FONT face=3DArial></FONT> </DIV>
><DIV><FONT face=3DArial>I know I have heard that inserting Eqs before =
>your=20
>monitors to </FONT></DIV>
><DIV><FONT face=3DArial>counteract room modes/coloration is a technique
=
>many=20
></FONT></DIV>
><DIV><FONT face=3DArial>shy away from. I know the best way to treat this
=
>is by=20
>speaker placement</FONT></DIV>
><DIV><FONT face=3DArial>and sound absorption. However, when would be an
=
>exceptable=20
>time to do this?</FONT></DIV>
><DIV><FONT face=3DArial>What are the pros and cons?</FONT></DIV>
><DIV><FONT face=3DArial>The purpose I would be doing it is to bring the
=
>rooms freq=20
>response flatter.</FONT></DIV>
><DIV><FONT face=3DArial></FONT> </DIV><FONT face=3DArial>
><DIV><BR>-- <BR>Thanks,</DIV>
><DIV> </DIV>
><DIV>Brandon </FONT></DIV></BODY></HTML>
>
>
Re: EQing your room [message #73552 is a reply to message #73546] Wed, 04 October 2006 10:22 Go to previous message
brandon[2] is currently offline  brandon[2]   UNITED STATES
Messages: 380
Registered: June 2006
Senior Member
I suspect the peaks are due to boundary walls interference.
I didnt even think about the nulls not benefiting.
Yes if I use the 80hz roll off on the hr824s the problem goes away ofcourse
since the problem is at 47hz.
I have a 12db peak at 47hz and a null at 108hz only on the left speaker.

Thanks,


--
Thanks,

Brandon Goodwin

Process Engineering
Pentech Assembly
<Kris .> wrote in message news:4523dada$1@linux...
>
> It's okay to EQ your room to fix speaker boundary interface problems, but
> NOT to fix room mode problems.
>
> If your speakers are too close to a wall, you might need a little cut on
> the low end to compensate for the extended baffle that the wall
makes....using
> a shelf EQ here is fine, it's exacly what the acoustic compensation
switches
> on the backs of some active monitors are intended for.
>
> Don't bother trying to EQ out peaks and valleys caused by room
modes...they
> are only solved by trapping and room dimension changes. Besides that, you
> can only EQ the peaks, and can't do anything about the nulls.... best not
> to try.
>
> Cheers,
>
> Kris
>
>
> "Brandon" <a@a.com> wrote:
> >
> >
> >All,
> >
> >I know I have heard that inserting Eqs before your monitors to=20
> >counteract room modes/coloration is a technique many=20
> >shy away from. I know the best way to treat this is by speaker placement
> >and sound absorption. However, when would be an exceptable time to do =
> >this?
> >What are the pros and cons?
> >The purpose I would be doing it is to bring the rooms freq response =
> >flatter.
> >
> >
> >--=20
> >Thanks,
> >
> >Brandon
> >
> ><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> ><HTML><HEAD>
> ><META http-equiv=3DContent-Type content=3D"text/html; =
> >charset=3Diso-8859-1">
> ><META content=3D"MSHTML 6.00.2800.1476" name=3DGENERATOR>
> ><STYLE></STYLE>
> ></HEAD>
> ><BODY bgColor=3D#ffffff>
> ><DIV><FONT face=3DArial>All,</FONT></DIV>
> ><DIV><FONT face=3DArial></FONT> </DIV>
> ><DIV><FONT face=3DArial>I know I have heard that inserting Eqs before =
> >your=20
> >monitors to </FONT></DIV>
> ><DIV><FONT face=3DArial>counteract room modes/coloration is a technique
> =
> >many=20
> ></FONT></DIV>
> ><DIV><FONT face=3DArial>shy away from. I know the best way to treat this
> =
> >is by=20
> >speaker placement</FONT></DIV>
> ><DIV><FONT face=3DArial>and sound absorption. However, when would be an
> =
> >exceptable=20
> >time to do this?</FONT></DIV>
> ><DIV><FONT face=3DArial>What are the pros and cons?</FONT></DIV>
> ><DIV><FONT face=3DArial>The purpose I would be doing it is to bring the
> =
> >rooms freq=20
> >response flatter.</FONT></DIV>
> ><DIV><FONT face=3DArial></FONT> </DIV><FONT face=3DArial>
> ><DIV><BR>-- <BR>Thanks,</DIV>
> ><DIV> </DIV>
> ><DIV>Brandon </FONT></DIV></BODY></HTML>
> >
> >
>
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