Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1996-07-29
1998-12-08
Feild, Lynn D.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
361686, 381388, G06F 116, H04R 102
Patent
active
058479228
ABSTRACT:
A portable computer docking station has a molded plastic housing within the interior of which are a ported speaker structure operative at low, mid and high frequencies, and a nonported speaker structure operative only at mid-to-high frequencies. The ported speaker structure has a ported enclosure section formed integrally with an exterior wall portion of the housing and having an open side. A first speaker is mounted on a lid member at an opening therein, with the lid member being secured to the ported enclosure section over the open side thereof with a seal member being sandwiched between the lid member and the enclosure section, and a sound absorbing structure being disposed within the enclosure section under the first speaker. The nonported speaker structure includes a second speaker supported on a second wall portion of the housing. A mid-range enclosure, formed from an open cell foam material, engages a section of the second wall portion that circumscribes the second speaker and has a chamber therein that receives the second speaker. The input of the first speaker is connected to the output of a first amplifier having an input in turn connected to a first equalizing circuit. The input of the second speaker is connected to the output of a second amplifier, having a wattage capacity less than that of the first amplifier. A second equalizing circuit is connected to the input of the second amplifier.
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Gough David E.
Markow Mitchell A.
Smith Kelly K.
Compaq Computer Corporation
Feild Lynn D.
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