-2LE & AT4022)
At 7:21 PM +0000 3/13/10, hartogj wrote:
>
>
>Hello,
>
>I would say the SASS is a hybrid - a baffled boundary array.
>
>John Hartog
Hi John--
Good point. Although Crown describes the foam as a "barrier," both
absorption and barrier functions appear to be present in the mass and
planes formed by the foam "nose." The metal wrapping around the nose
potentially creates some enclosure. With the capsules positioned at
the intersection of where the foam meets the hard boundary, there
could be some double-boundary effect, somehow. Multiple boundaries
were a hot idea at Crown around the time the SASS surfaced.
Surprisingly, SASS rigs are hollow enough to ring when thumped. A DIY
SASS with all the "magic" has remained elusive for everyone I've
known that has attempted it, but someone will surely figure the
design principles out.
I'm hoping it will be instructive to better characterize what seems
to be a midrange lift in Paul's and Andrew's comparison. :-) Rob D.
=3D =3D =3D
>
>--- In
><naturereco rdists%40yahoogr oups.com>naturerecordists@ yahoogroups=
. com,
>Rob Danielson <> wrote:
>>
>> Hi--
>> In interest of keeping our term usage somewhat consistent, I'm pretty
>> sure that the wooden boundaries in David's rig would not be
>> technically described as "baffles." Baffles are used primarily to
>> absorb sound like the separator in a Jecklin Disk, and boundaries are
>> designed to reflect sound or create a pressure zone. The SASS and the
>> Curt's head-spaced arrays made of wood, are both "Boundary" arrays.
>> The SASS uses the pressure zone formed on the boundary surface with
>> flush mounted capsules. Curt's perpendicular to boundary capsule
>> mounting chiefly uses reflection. Rob D.
>>
>> >
>
>
--
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