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M8x1 to M52x3 hexagon head bolts with fine pitch thread – Product grades A and B: Withdrawn: DIN EN ISO 8676: ISO 8676: DIN 962: Designation system for fasteners: Active: DIN 963: Slotted countersunk head screws (with countersunk heads as specified in ISO 2009-1972) Withdrawn: DIN EN ISO 2009: ISO 2009: DIN 964: Slotted raised countersunk ...
Most of the amplifiers produced by ACC were solid-state, but a few models later in production were valve amps. The company is remembered in particular for its Acoustic 361 bass stack, consisting of an Acoustic 360 bass pre-amplifier and one or two Acoustic 361 W-bins, each featuring a built-in 200-watt RMS power amplifier and a rear-facing 18" Cerwin-Vega loudspeaker.
In mechanical engineering, an end-face mechanical seal (often shortened to mechanical seal) is a type of seal used in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing. Since the shaft rotates, preventing this ...
The transceiver head normally contains three or more transducers separated by a baseline of 10 cm or less, hence the "short baseline" name. A method called “phase-differencing” within this transducer array is used to calculate the direction to the subsea transponder. The presence of environmental noise reduces USBL positioning accuracy.
In telecommunications, an acoustic coupler is an interface device for coupling electrical signals by acoustical means—usually into and out of a telephone. The link is achieved through converting electric signals from the phone line to sound and reconverting sound to electric signals needed for the end terminal, such as a teletypewriter, and ...
Boston Acoustics has produced home loudspeakers such as the E, HD, VR-M, VR, CR, Micro Reference, and Lynnfield Series, and on the mobile side Pro, Z, and SPZ reference component speakers. In August 2005, D&M Holdings acquired Boston Acoustics. In March 2017, Sound United LLC acquired D+M Holdings. [1]
In a horn loudspeaker, the term acoustic transformer or acoustical transformer may refer to either of two components: Horn (acoustic) , which attaches to the compression driver unit Phase plug , a component within the compression driver, the interface between the diaphragm and the horn
Bose Acoustic Wave Music System CD-3000 with CD player and FM radio. The first "Wave" product was the "Acoustic Wave Music System" (AWMS-1), which was a tabletop mini-hifi system that was introduced in 1984. The AWMS-1 consisted of an AM/FM radio, cassette player, two 2-inch tweeters, and a four-inch woofer. [2]