RE: Re: More Questions on Ceiling Speakers

[<ha@xxxxxxx>]

No, wadding only really gets the higher frequencies.

The problem is more vibration than actual sound, especially at frequencies
below about 150hz (wadding gets rid of the acoustic stuff 120hz up ish).
Plasterboard is really far too flexible for good isolation (there's even
one
company in the US that puts transducers on the back of Plasterboard panels
to make 'speakerwalls'). The problem is really tricky, even if you mount
the
speaker onto something quite solid, the solid 'thing' is bound to be part
of
the floor above.

maybe look at an 'in-room' sub, to keep as little 'low end' going to the
ceiling speakers. I'm always impressed by those cheap PC speakers that have
a huge sub, and tiny satellites, they sound OK to me, yet the satellites
are
probably 3" drivers max.

Good luck.


Richard

-----Original Message-----
From: Paul [mailto:p-gale@xxxxxxx]
Sent: 06 May 2003 13:51
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Re: More Questions on Ceiling Speakers


Not tried that but could be worth a go. Does it absorb lower
frequencies?



Paul.



-----Original Message-----
From: Frost Neil [mailto:Neil.Frost@xxxxxxx]
Sent: 06 May 2003 13:40
To: 'ukha_d@xxxxxxx'
Subject: RE: [ukha_d] Re: More Questions on Ceiling Speakers



What about lining the upper area with acoustic matting as used in "In
Car
Entertainment"?

Neil


-----Original Message-----
From: Paul [mailto:p-gale@xxxxxxx]
Sent: 06 May 2003 13:04
To: ukha_d@xxxxxxx

Even with a lot of insulation, you still may get a lot of the bass
frequencies (as I do) transmitting to the upstairs rooms (unless you can
physically isolate the speakers and box?!)



Paul.



-----Original Message-----
From: Tom Dubourg [mailto:thomas.dubourg@xxxxxxx]
Sent: 06 May 2003 12:55
To: ukha_d@xxxxxxx
Subject: [ukha_d] Re: More Questions on Ceiling Speakers



Hi Mick

I have installed a pair of ceiling speakers into my dining room.
There is a great amount of sound leakage to the upstair bedroom when
they
are playing music.

If I was doing the installation again I would definitely look at
creating an
enclosure around the rear of the speaker and using some loft insulation
to
prevent sound leakage to the upstairs rooms.

Good luck

Tom





--- In ukha_d@xxxxxxx, "Mick Furlong" <hiltoneltd@y...>
wrote:
> Just thought of a couple of further questions....
>
> The ceiling consruction downstairs is concrete slab counter
battened and
> then counter battened again (ie. giving a grid of wood) this was
done to
> allow for easy rounting of cables in the ceiling. So the question
is should
> I box in around the speakers to create a small enclosure or should
I leave
> them open to the whole of the ceiling void?
>
> Also should I put in any acoustic dampening material ?
>
> Thanks
> Mick
>
>   -----Original Message-----
> From: Mick Furlong [mailto:hiltoneltd@xxxxxxx...]
> Sent: 05 May 2003 12:28
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Questions on Ceiling Speakers
>
>
>   Paul
>
>   thanks for this that is exactly what I was after, I didn't want
to be
>   sending a pile of them back because they wouldn't fit;)
>
>   Off to get my tape measure;)
>
>   Cheers
>   Mick
>     -----Original Message-----
>     From: Paul Robinson [mailto:ukcueman@xxxxxxx...]
>     Sent: 05 May 2003 12:00
>     To: ukha_d@xxxxxxx
>     Subject: Re: [ukha_d] Questions on Ceiling Speakers
>
>
>     I have the 6.5" 125.063 in front of me.
>
>     I measured 62mm from the face of the plasterboard to the back
of the
>   speaker plus about 15mm (ish)
>     below - so the total height of the speaker is 77mm. The web
site says
> this
>   speaker has a depth of
>     65mm.
>
>     HTH
>     Paul
>
>     > Looking at getting some of the ceiling speakers  from Henry's
> discussed
>   a
>     > while back and wondering if anyone could tell me the exact
clearance
>     > required above the ceiling. On the web site it says 56mm but
I think
>   someone
>     > mentioned these protrude 15mm from the ceiling  so is it 40mm
>from
>   face
>     > of the plasterboard to the back of the speaker? I am pretty
restricted
>   on
>     > space so need to know as close as possible what is required.
>
>
>
>
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