From: "Patrick D. Olguin" <drpat@p...>
Date: Fri Jan 21, 2000 1:30 am
Subject: Re: Dog Boxes
Bill Thompson wrote:
> From: Bill Thompson <Bill@A...>
> I've never tried mounting speakers above a window, but I can tell you that
> I've had great success with a couple of tricks...
> >1. Should I close the backs or not? If it is closed, where is the best
> >place to poke the hole for the cable entrance.
> It depends on whether or not you need isolation at the back. In my case,
> the speakers are in soffits in the front corners of a single room studio,
> although in other cases the common wall has separated a control room from
> recording space, in either case, I needed isolation, so I built a sealed
I was thinking the same thing. Since ther will be a studio on the other
side, I'll probably end up using a couple of layers of material all the
way around to improve isolation.
> I also use very large cavities, an option that may not be open to you. In
> my case, I have always mounted the speakers on speaker stands filled with
> sand, and then placed a wall over them.
> >2. Should I line the side cavities with fiberglass?
> Depending on the size of the cavity I'm not sure what good this would do.
I'm mostly concerned with cavity resonances building up and coloring the
> >3. The speakers will be mounted above a window and therefore will be
> >tilted downward. Am I running the risk of the speakers falling forward
> >because of this? If so, how do I secure them properly so that they don't
> >fall out?
> If they are leaning just a little the opening and shelf should be enough,
> if they are leaning a lot you may want to secure them with some kind of
> rubber damper (I use those stupid exhaust system hangers VW used to use on
I'll probably end up making separate boxes and rigidly mount them to the
shelf with a shim on the back to tilt them down at the angle that I'll
need. Then I could probably stuff rubber isolators between the boxes and
the speakers (all of the way around the speaker) to keep them in the
boxes...I don't know. How do you secure the VW dampers that you're
talking about, to the speakers. Do you screw them directly to the
> >4. I'm assuming that the cracks around the front need to be sealed
> >airtight so that bass will not travel from the back to combine. What is
> >the best way to approach this?
> I have always tried to make the opening reasonably airtight, I'm not sure
> if it is absolutely necessary in your case, or even mine<G>. A friend of
> mine and I came up with a fairly clever little trick. The opening for the
> speaker is framed with 2x3's approximately 3/8" larger than the speaker. We
> covered the 2x3 with 3/8" thick neoprene, and then shaved it so that it was
> only 1/4" thick at the back. This way we could slide the cover over the
> speaker, on or off, without a lot of hassle. Don't laugh too hard, it
> really works.
Great trick. That sure beats prying the trim off if you ever need to
pull the speakers out.
> Hope this helps...
It does. Thanks,
Patrick D. Olguin