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PROBLEM TO BE SOLVED: To provide an improved line array electroacoustic transducing system.
A line array electroacoustic transducing system includes at least first and second line arrays
removably secured in an electrical and mechanical coupling relationship. The assembly has an
input for receiving an audio electrical input signal and an output electrically coupled to the at
least two line arrays. The amplifier has a mechanical support, the first and second lines
interconnected with the mating connector releasably secured to the mating connector of the
adjacent line array. Support the array and establish mechanical and electrical coupling between
the amplifier and the line array. [Selected figure] Figure 1
Line array electroacoustic conversion
Field of the Invention The present invention relates to line array electro-acoustic conversion, and
more particularly to a line array having a plurality of removably fixed segments.
A typical line array loudspeaker system comprises a plurality of loudspeaker drivers arranged
vertically in a cabinet.
An important object of the present invention is to provide an improved line array electroacoustic
transducing system.
According to the present invention, a line array electroacoustic transducing system comprises at
least first and second line arrays removably (detachably) fixed in electrical and mechanical
interconnection relationship. There is.
The assembly has an input for receiving an audio electrical input signal and an output electrically
coupled to the at least two line arrays.
The amplifier has a mechanical support, the at least first and second lines interconnected with
the mating connector releasably secured to the mating connector of the adjacent line array.
Support the array and establish mechanical and electrical coupling between the amplifier and the
line array.
The mating connector can be configured and arranged to self-align (assemble) when assembling
the at least first and second line arrays and the amplifier. It is possible to provide a locking
mechanism to lock the assembly. The amplifier may have signal processing means for processing
the signal sent to its input. The signal processing means may comprise one or more of a
crossover filter, an equalization circuit, a voltage limiting circuit, a dynamic range processing
circuit, a dynamic equalization circuit, a volume circuit, and a noise screening circuit. The signal
processor may have preset processing parameters selectable by the user.
Other features, objects, and advantages will be apparent from the following detailed description
read in conjunction with the accompanying drawings.
One embodiment of the portable loudspeaker system 100 shown in FIG. 1 comprises a line array
assembly 102 and an amplifier 104.
Amplifier 104 can function as a base to mechanically support line array assembly 102 at
connection 106. Electrical connections between the line array and the amplifier can be made
within connection 106. In one embodiment, line array assembly 102 may be comprised of two
line arrays 108 and 110. In another embodiment, line array assembly 102 can be configured
with a single line array or can be configured with more than two line arrays. Line array 108 can
be mechanically and electrically connected to line array 110 at connection 112. Line arrays 108,
110 and amplifier 104 can be transported separately and assembled prior to use.
FIG. 2 shows the line array 108,110. Each of the line arrays 108, 110 has a driver that can be
placed substantially rectilinearly along the front of each array, a portion of which is shown in the
notch 204. One embodiment of each array can have, for example, 12 drivers, and thus, the line
array assembly 102 has 24 drivers, and the diameter of each driver is, for example, less than 3
inches . The enclosures of each line array can be made of aluminum extrusion and the
loudspeaker baffles can be stamped aluminum parts. Each loudspeaker baffle may also have a
bass port at the center or other part of the baffle. The extrusion enclosure can be closed on both
ends by injection molded plastic end caps 210, 212, 214, 216. Each end cap can seal the
acoustic enclosure in a known manner, for example by compression of the viscoelastic gasket
material. The end cap 214 can accommodate a mechanical locking mechanism, which, together
with the bayonet 302 (FIG. 3), can function to secure the line arrays 108, 110 after assembly.
FIG. 3 shows the back of the line array assembly 102. The bayonet 302 is a mechanical support,
which in one embodiment can be permanently fixed to the line array 108 and can fit into the
corresponding slot 304 along the back of the line array 108. Alternatively, bayonet 302 may be
secured to line array 110 and may further be fitted into corresponding slots on line array 108.
The bayonet 302 serves to align the line arrays in a straight line during assembly, and may also
serve to rigidly connect the line arrays and to prevent relative movement during use. The
bayonet may be of any durable construction, for example a two-piece having a thick steel inner
support formed and a corresponding slot-shaped polyoxymethylene plastic outer shell on the line
array 110. (Two-part) insert (insert) forming structure can also be made.
The use of mating connectors allows for the transmission of signals. This signal may be a power
(in AC or DC form) or an information-carrying signal from amplifier 104 to arrays 108, 110 (an
example being an audio signal as it appears at the output of an audio preamplifier or power
amplifier) Both can be. Referring to FIGS. 4-8, mating connectors may be disposed within the end
caps 212, 214, 216 and within the support 804. End caps 212, 214 may have mating connectors
402, 602 disposed therein, while end caps 216 may mate with mating connectors 802 disposed
in support 804. Can have a mating connector 702 capable of Thus, signals can be provided from
the amplifier 104 to the line array 110 and passed through the line array 110 to the line array
108. The mating connectors 402, 602, 702, 802 may be self-aligned to ensure proper
connection when assembling the system. The elements of the mating connector pair 402 and
602, or one or both of the elements 702 and 802, are relatively movable (movable) so that they
can be aligned in a straight line when making a connection, When assembling the components, it
can have mechanical structures that allow for linear alignment of the connectors. FIG. 4 shows
the placement of the connector 402 within the end cap 212. When assembling the arrays 110,
108, the connector 402 may be mated with the connector 602, as shown in FIG. Connecting
loudspeakers using mating connectors is not limited to a particular embodiment of the present
invention, and thus many types of components, including all types of speakers and all types of
amplifiers. It can be connected. Connecting the individual components in this way can be
separate speakers or amplifiers, or they can be parts of a system that must be assembled to
To mechanically support the array 108, the bayonet 404 may be slid into the slot 604 to prevent
relative movement during use. Additionally, the latch 606 can be slid into the slot 504 and
secured by the locking mechanism 406. One embodiment is shown in FIG. The lock latch 406 is
biased by a spring 408 so that the latch 606 can be secured when the arrays 108, 110 are
assembled. For disassembly, a release button 410 is provided along the outer surface of the end
cap 212 which, when depressed, exerts a mechanical force against the spring 408 to release the
latch 406. The structure 502 may be, for example, a steel plate or any structure that is
sufficiently durable to secure the components 406, 408, 410 of the locking mechanism.
Separating the end caps 212, 214 can disengage the mating connectors 402, 602.
FIG. 9 shows an embodiment of the amplifier 104, comprising an enclosure 902 having an upper
half and a lower half. The enclosure halves can be of durable construction, such as injection
molded plastic housings. Enclosure 902 also has a shaped handle 904 so that it can be carried
(held) during transport. Below the lower half part can have an element which acts as a leg (not
shown). The upper half can be formed with a recess 906, which can serve a number of functions,
for example, the storage of spilled liquid. In one embodiment, the recess 906 can hold up to one
imperial pint of liquid.
The upper half of the enclosure 902 can have an integrated mechanical support 804 that can be
mated with the lower half of the array 110. The mechanical support 804 can also have a mating
connector 802, within which it can mate with the connector 702 in the end cap 216. The
mechanical support 804 must be durable enough to support the line array assembly 102, such
as, for example, an aluminum die cast structure. Inside the enclosure 902, a locking mechanism
can be disposed, which can be snapped into the mechanical support 804 to secure the line array
110. The upper half of the enclosure 902 can also have a foot operable pedal (treadle: treadle)
908, which mechanically releases the locking mechanism to allow the line array 110 to be
released. Allows removal.
FIG. 10 shows a view of the interior of the upper half of enclosure 902, showing support 804 and
connector 802 (internal electrical connections not shown). The lock assembly 1012 comprises a
slide 1002, a spring 1004 and a lock latch 1006 disposed within the amplifier enclosure 104
such that the slide 1002 penetrates the pocket 1008 and communicates with the pedal 908 at
one end. There is. The slide 1002 is in communication with the lock latch 1006 at its opposite
end. The spring 1004 provides the locking latch 1006 with sufficient force to capture the latches
704, 706 when the cap 216 is inserted into the mechanical support 804. The mechanical
support 802 is secured to the inner surface of the lower half of the enclosure 902, thus securing
the lock assembly 1012 within the enclosure 902.
The mating connector 702 is disposed within the end cap 216 and mates with the connector 802
to allow signal transmission from the amplifier 104 to the array 110. The signal may be any
signal that can be transmitted from the amplifier 104 to the array 110, and may be, for example,
the output of a power amplifier or DC or AC power. When the end cap 216 is inserted into the
mechanical support 804, the connectors 702, 802 can be self-aligned. In addition, the latches
704, 706 can be secured by the lock latch 1006 to mechanically secure the array 110 within the
mechanical support 804. The inner surface of the enclosure 902 can provide sufficient structure
to secure the components of the lock assembly 440.
A pedal 908 is provided along the outer surface of the upper half of the enclosure 902 for
disassembly, and pressing on it provides mechanical force to the slide 1002. The slide 1002, on
the other hand, moves the force parallel to the locking latch 1006, which acts against the spring
1004 and releases the latches 704,706. Removal of the end cap 216 from the mechanical
support 406 can release the mating connectors 702, 802.
FIG. 9 shows a back panel 910. The back panel 910 can be hinged along the back of the
enclosure 902 to cover and protect the I / O panel 1100. FIG. 11 shows an input / output panel
1100 and generally comprises a control and an input / output port disposed along the rear of the
enclosure 902. Providing a signal input allows for the introduction of signals into the system. In
one embodiment, four channels 1102, 1104, 1106, 1108 of internally mixable signal inputs are
provided, but the use of more or less channels is also contemplated. The signal can be introduced
from any type of signal source, and can be a microphone, an instrument, or any other digital or
analog source. Channels 1102 and 1104 can have XLR connector jacks 1110 and 1/4 "TRS
connector jacks 1112. The signals received at each of these jacks can be handled separately by
the system, and no "mic / line" switch is required. For example, inserting a 1/4 "TRS connector at
input 1112 can send the signal to the line level mixing circuit, while inserting an XLR male
connector at input 1110 will, for example," trim "the signal. or can be sent to a high quality
microphone preamplifier with level control 1114 and can then be mixed internally. An additional
controller 1116 allows the user to select "phantom" power and use the system with a condenser
and electret microphone. The inclusion of an indicator such as LED light can indicate both
phantom "on" and signal / signal overload conditions.
The configuration of channels 1102, 1104 may vary from embodiment to embodiment and may
allow for enhanced functionality. In one embodiment, if the channels 1102, 1104 have separate
buffer full range XLRM outputs 1120, signals can be sent from the channels 1102 or 1104 and
recorded directly. Channels 1102 and 1104 also allow the user to patch a typical off-board signal
processor into the signal path through patch points 1122 to include desired effects such as, for
example, delays or reverberations. You can also Alternatively, the channel can simply have one
type of connector. For example, as in the case of channels 1106, 1108, only standard TRS jacks
are shown.
The I / O panel 1100 can also provide a power amplifier output 1124 for the power amplifier.
The output 1124 can be connected in a number of known ways, such as corresponding to a
Neutrik NL4 Speakon connector. When the line array assembly 102 is assembled with the
amplifier 104, a power amplifier can be used to drive the line array assembly. In one
embodiment, a portion of the power amplification output 1124 may be temporarily disabled in
such a case. The I / O panel 1100 can also include additional I / O ports. Providing a "data out"
channel 1126 may allow, for example, two channel digital recording from the system. Providing a
"data in" channel 1128 may, for example, provide a means for updating system software. The I /
O port can be in a known data jack format, such as PSDIF, USB, or IEEE 1394. Also, the I / O
panel 1100 may also include a power switch 1130 and LEDs or similar indicators to indicate that
it is supplying power to the system.
In one embodiment shown in FIG. 12 (FIGS. 12A-12D), the amplifier 104 can incorporate three
light weight switching power amplifiers 1 (power amplifiers) 202, 1204, 1206. FIG. If the line
array assembly 102 is not attached to the amplifier 104 (which can be detected by known
electrical means, for example by detection of a predicted level of impedance 1208), using the
amplifier 104 as an auxiliary three channel amplifier it can. A signal can be introduced to
amplifier 104 in such a case using any analog or digital signal source. The power amplifiers can
be used independently or with a specific common input, and any signal can be distributed to all
three power amplifiers. With the line array assembly attached, the amplifiers 1202, 1204 can be
used to drive two line arrays. The remaining power amplifiers 1206 can be used for any purpose,
such as to drive additional speakers, eg, peripheral bus (bass) modules. This feature also allows
the user, for example, to connect additional bus modules to the system and use means to drive it
if it is desirable to increase the bass level in the individual playing environment. (When using an
electronic drum, playing with disco or hip hop music, when using with a bass guitar, etc.). In
addition, the power amplifier can also be tailored to individual system requirements or
configurations, such as a 4 ohm load in one embodiment.
The signal processing element 1212 is, in one embodiment, a digital signal processor (DSP), and
by being included in the system, any number of audio signal processing capabilities, eg,
electronic crossovers for high and low frequency system components Filter, room equalization to
compensate for sound in individual rooms or other spaces (room equalizer), voltage limiting to
prevent damage to the system due to excessive input levels, volume control, and noise screening
(noise gate: noise gate) can be provided.
In one embodiment, the channels 1102, 1104 can include, for example, user selectable presets
1214 having settings for equalization filter parameters and noise screening parameters.
Examples of equalization filter parameters include corner frequency (low pass, high pass, or all
pass filter), filter order, filter type (ie Bessel, Butterworth), center frequency (band pass or band
stop type) Filters), Q, and gain are considered. Other filter types not explicitly mentioned are also
conceivable, other types of parameters, such as poles and zeros, real and imaginary parts, or
frequency and Q etc. Examples of noise gate parameters may include thresholds at which
compression occurs, attack times, release times, and gains. The preset unit 1214 can be
determined for each specific combination of known devices, such as a microphone, an
instrument, or a sound processing device. For example, the preset may have settings for an
electric guitar that cuts signals higher than 5 KHz and lower than 80 Hz. Other presets can be
tailored to specific instrument, microphone and speaker combinations, combining the Martin
D45 acoustic guitar with the AKG 414 microphone in the sound hole, or using the Shure Beat 58
with a line array assembly Etc. Other presets can be tailored to specific instrument and speaker
combinations. Other possible presets include dynamic equalization (dynamic equalizer), dynamic
range processing, or any other known audio signal processing that can be changed. Examples of
dynamic equalization parameters may include the center frequency of equalization and the
amount of boost applied as a function of signal level. Examples of dynamic range parameters
may include amount of compression, threshold when compression is performed, attack time and
release time, or any other known adjustable parameter. In addition, the noise gate parameters
can be adjusted to allow the user to disable special features as needed. On the other hand,
channels 1106, 1108, corresponding to inputs 1220, 1222, can receive line level signals, for
example, through the TRS 1/4 "connector, and can be introduced into the system without preset
equalization. The preset values can be changed by the user and can also be transferred in and out
of the system through the I / O data ports 1126, 1128.
This feature allows the user to share the changed preset value.
In the previous embodiment, the four inputs allow the singer or player to amplify a wide range of
music, voice or recorded signals without additional equipment. If the performer desires more
inputs or more comprehensive signal processing, known mixers or signal processing equipment
can be inserted into the channel or mixed via any of the four inputs.
The system can also include a remote controller 1300, an example of which is shown in FIG. The
remote controller 1300 comprises electronic circuitry and a controller that allows the user to
control and change amplifier and channel settings, for example, to allow the user to adjust the
system to a particular playing location. The remote controller 1300 can communicate with the
amplifier 104 by a physical connection such as a 5-pin DIN / MIDI connector / cable assembly or
by wireless means such as IR or wireless transmission. The features of remote controller 1300
also include all system settings, eg, channel level, high frequency, medium frequency, and low
frequency equalization controls 1302, 1304, 1306, channel clip / signal presets. A two color LED
1308 and a controller that allows adjustment of the master level control 1310 can be included.
Control may also be provided to allow adjustment or selection of preset values or any other
system parameters.
As mentioned above, the system also allows use with bus modules. An example of a suitable bus
unit is the Panaray® MB4 modular bus loudspeaker available from Bose Corporation (Bose). In
one embodiment, one or two bus modules may be connected with the amplifier 104 and used
with the system 100. In one embodiment, the overall system bus (bass) output may be limited if a
single bus module is used, and further, the line array assembly 102 is operated at approximately
6 dB less power. Thus, the bus outputs may be matched. Such output matching can also be
automatically initiated and performed by electrically sensing 1224 the connection of the bus
module to amplifier 104 as well as sensing of the line array assembly. . Depending on the
number of bus modules detected, the limit threshold for the system may change. For example,
the limit threshold may be set low if one bus module is detected and may be increased if two bus
modules are detected. The bus module can communicate in any of a number of known ways, for
example through the Neutrik NL4 / Speakon connector.
The foregoing has described novel apparatus and techniques for linear array electroacoustic
conversion. It will be apparent to those skilled in the art that various uses and modifications of,
and developments from, the specific devices and techniques disclosed herein can be made
without departing from the inventive concepts. Accordingly, the present invention is intended to
embrace all novel features and novel combinations which may be possessed by or possessed by
the devices and techniques disclosed herein, which should be limited only by the spirit and scope
of the appended claims. It should be interpreted.
FIG. 1 shows an embodiment of a loudspeaker system according to the invention. FIG. 2 shows
the front of the line array assembly FIG. 2 shows the back of the line array assembly. FIG. 4
shows one of the various end caps of the line array. FIG. 5 shows one of the end caps of the line
array system. FIG. 6 shows one of the various end caps of the line array. FIG. 7 shows one of the
various end caps of the line array. FIG. 8 shows an amplifier with mechanical support and mating
connections. FIG. 9 shows an embodiment of an amplifier according to the invention. FIG. 10
shows an embodiment of a locking mechanism that can be placed in the amplifier. FIG. 11 shows
an embodiment of the back panel of the amplifier. FIG. 12A shows a block schematic of the
system. FIG. 12B shows a block schematic of the system. FIG. 12C shows a block schematic of the
system. FIG. 12D shows a block schematic of the system. FIG. 13 shows a remote controller that
can be used with the present system.
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