RooomMatch Speakers by BOSE

Bose RoomMatch Speakers are actually Progressive Directivity Array i.e. range of line-array speakers. Designed for the finest performing arts centers, auditoriums, sports arenas, dance clubs and houses of worship. RoomMatch arrays deliver concert-quality sound for live music and speech in permanently installed systems. With 42 full-range array modules, 2 companion subwoofers, and rigging accessories, the RoomMatch modular design allows Progressive Directivity Arrays to be optimized for almost any room size, shape or acoustics. Innovative Bose technologies combine to ensure that concert-quality sound is delivered to every seat in the venue.

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Apertura Enigma

Enigma is Flagship Product of French Company Apertura for almost 20 years.

The cabinet uses Apertura special shape: two curved sides of different length and no symmetrical faces. The heterogeneous nature of the different panels imply a non –uniform resonance distribution and a reduced sound radiation for the most excited ones.

Enclosure panels consist of multiple thin layers of high density MDF, pressure molded to reach final thickness of 28 to 44mm. This sandwich structure allows to break and attenuate vibration waves inside the material. The aim is to drastically improve cabinet damping.

The Enigma uses two custom-design 8’’ bass/mid range drivers. The “Isotactic Matrix” cone is a new type of composite material (woven polypropylene). This cone material exhibits stiffness, lightness and good damping properties, which makes it essential for our new designs.
These drive-units benefit of an “Excel” powerful motor: 134mm ferrite, long voice-coil on titanium former and a copper ring on the pole piece. The implementation of an original loading architecture brings the benefit of a real synchronized operation of the two mid-woofers. This is mostly not the case with common design.

The high frequency drive unit is a professional ribbon tweeter. It uses an aluminum/ polymer sandwich diaphragm for improved linearity.
The drive unit effective piston area is twice as the Onira one’s, and four times the area of ordinary dome tweeters, for a moving mass of only 88mg. The high powerful Neodynium magnet and high sensibility allow a low cutting frequency. This way we can spread the well-known sound qualities of ribbon tweeter over a wider frequency range.

 

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PARROT ZIKMU

Specifications:

• Total power output: 100W RMS, 50W per channel
• 3-channel (Class D) digital amplifier
• Frequency range: 50 Hz – 20 kHz
• Compatible audio formats: MP3, LPCM
• Settings: volume, R/L balance, equalizer with presets
• RF remote control
• RCA line-in input for all audio analog sources
• Cabinet custom molded design using ABS and
• PMMA resins with acoustically transparent cloth
• grilles over the membrane sections.
• Power supply: 70W
• Wi-Fi b/g with SES/WPS
• Bluetooth v2.1 + EDR
• Profiles supported: A2DP (Advanced Audio Distribution Profile), AVRCP (Audio/Video Remote Control profile)
• Maximum range: 50 feet, 15 metres
• Pairing: by PIN code (0000)
• Updates via Bluetooth
• Height: 29.2 in.
• Weight: 3.5 kg

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Pioneer AVH-X2590BT

FEATURES:

• DVD/CD Player
• MIXTRAX EZ for Quick Non-Stop MIX Play
• Color Customization (5-Display Colors and 112-Key Colors)
• USB Direct Control for iPod/iPhone and USB Devices (USB Interface Cable for iPod/iPhone Required)
• AppRadio Mode (CD-IU201S Required)
• USB Port (Rear)
• AUX Input
• RGB Input
• MOSFET 50 W x 4
• 8-Band Graphic EQ
• Auto EQ
• Sonic Center Control
• Back-Up Camera Ready
• Wired Remote Input
• Display Off Mode
• RDS
• 15.4cm VGA Touch Panel Display with LED Backlight
• Built-in Bluetooth® Wireless Technology (Hands-Free Calling/Wireless Audio)
• RCA Preouts x 3

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Electronic Terms ........ 9

PAL - System of video transmission used in Europe and many other countries internationally

Pan and Scan - A procedure where a 4:3 image is taken from a widescreen source by clipping the edges.

Pixels - A Picture Element - the smallest element you can see on a monitor or television display. The more pixels an image contains, the higher its resolution.

Premiere - Video editing software packed created by Adobe Systems.

Progressive - Non-interlace full-frame footage or display device, so-called because a progressive image is displayed in one fast sweep, unlike interlaced images which are displayed in two passes, each pass displaying every other line.

Psychoacoustics - The theory of how the brain interprets audio.

Pulldown - This is the process of making multiple fields from frames in order to change the framerate of a source. Film footage is converted from 24fps to 30fps by creating 3 Fields out of the 2 fields usually contained in a single frame (i.e. 3:2 pulldown). PAL footage uses 2:2 pulldown where 2 fields are kept as 2 fields.

Quicktime - Software developed by Apple for the compression/decompression of video. Contains various codecs including Sorenson and recently Apple's own mpeg4 implementation.

Rainbow Artifacts/Moire - The yellow, purple (and other) coloured artifacts sometimes found on sharp black edges in video footage.

Resolution - The width and height of an image or display in pixels.

RGB - Red Green Blue, a method of storing video data by its red, green and blue components which combined make any colour of light you can see.

Ripping - the process of extracting (usually video) data from a file/format that is dificult to access/alter by normal methods. In particular in reference to the decryption process involved in extracting video data from DVDs. Also used to describe the same extraction process for CD audio and video or audio from games.

Sample Rate - The amount of audio samples every second in an audio stream. CDs are sampled 44100 times a seond.

Saturation - Related to chroma, you can think of saturation as how a colour looks under certain lighting conditions. For instance, a room painted a solid colour will appear different at night than in daylight.

SBC - Smart Bitrate Control, a method of accessing the Fast-motion and Slow-motion aspects of the DivX3.11a codec in order to allow variable bitrate encodes. Pioneered by Nando in his program Nandub.

Scanlines - the horizontal lines that comprise one video frame.

SECAM - System of video transmission used in France, similar to PAL - also plays at 25fps but has a different chroma carriers.

Sorenson - A compression codec available in Quicktime.

Spatial - To do with the 2d space element (i.e. the contents of a single frame) of video. For example, a spatial smoother smooths out blemishes that occur within an area of pixels.

Stereo - Audio that contains two audio channels, a left and a right.

Temporal - To do with the time dimension of video, i.e. the changes of the contents of a video in time. For example, a temporal smoother smooths out blemishes that occur on an individual pixel within a range (period) of frames.

Timecode - The method of interpreting frames in time for use in video editing within given standards (such as NTSC, PAL, Film etc) see also Drop-Frame Timecode.

Video for Windows - The main backbone for video compression codec within windows.

Virtualdub - an open source Windows program for capturing and doing simple editing/compressing of avi files.

VirtualdubAVS - an adpatation of Virtualdub by Belgador to allow easy access to AVIsynth scripts.

Wave - Another term for a (usually) uncompressed audio stream as it can be graphically represented by a waveform.

YUV - A method of storing video information that gives priority (more bits of data) to the luminance of a sample.

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Electronics Terms .......... Part 2

Baffle - a board or other planar surface used to mount a loudspeaker.

Bandwidth - the range of frequencies reproduced by an Amplifier or transducer.

Band-Pass Enclosure - type of enclosure used for subwoofers where the driver is completely inside the enclosure and all of the output emerges through a port(s). This configuration is usually designed for high output volume with importance of accuracy/fidelity being less emphasized.

Band-Pass filter - an electric circuit designed to pass only midrange frequencies. This filter acts as high impedance to frequencies out of the pass band.

Bass (low frequencies) - The low end of the audio frequency spectrum between 0Hz to about 200 Hz.

Bi-amping and bi-wiring - some higher performance speakers  include dual sets of connectors, usually the type known as "binding posts," Models with dual connectors almost always also feature a special type of crossover with separate "high-pass" and "low-pass" sections. These connectors may also be shunted together with jumpers to accommodate conventional hook-ups.

Bi-wiring - low and high frequency sections of the loudspeaker are separated electrically at the cross-over. Each driver unit has its own filter section and connection terminals. Both sets of terminals are connected to one amplifier.

Bi-amping - an extension of bi-wiring in that a separate amplifier is utilized for each of the two sets of connectors from the cross-over.

Bipole - A speaker design which generates equal amounts of sound both forward and backward, with the two sounds being "in phase".

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Electronics Terms .......... Part 1

Acoustic suspension – It is a sealed or closed box speaker enclosure, also referred to as an infinite baffle. Acoustic suspension speaker systems are generally less efficient than Bass Reflex or Transmission Line designs, but may offer greater accuracy with respect to bass tightness and reproduction.

Acoustics - the science or study of sound.

Alternating (AC) Current - currents that have harmonic time dependence.

Ampere (A) – Ampere is the unit of measurement for electrical current in coulombs per second.

Amplifier - an electrical circuit designed to increase the current or voltage of an applied signal.

Amplitude - the relative magnitude of a signal.

Anamorphic - This term is used, and often misused, in a variety of ways. To the laymen it is most easily described in terms of a DVD or image that has been condensed horizontally in order that the source component or output device can make use of more, or all, of the available pixel data on the source media (typically a DVD or HD-DVD). Anamorphic or CinemaScope lenses can work in conjunction with a dedicated video processor to render a constant height image properly onto a 2.4:1 screen.

Aspect Ratio - This refers to a ratio between the width and height of a display or image. Typical aspect ratios include 4:3 (also called 1.33:1), 16:9 (also called 1.78:1), 1.85:1 and 2.4:1.

Attenuation - the reduction of an electrical signal.

Audio frequency - the acoustic spectrum of human hearing, generally regarded to be between 20 Hz and 20 kHz.

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