Search results
Results from the WOW.Com Content Network
Two-inch port tube installed in the top of a Polk S10 speaker cabinet as part of a DIY audio project. This port is flared. Unlike closed-box loudspeakers, which are nearly airtight, a bass reflex system has an opening called a port or vent cut into the cabinet, generally consisting of a pipe or duct (typically circular or rectangular cross section).
"It is difficult and costly to design and manufacture a time- and phase-accurate speaker system. Few of today’s high-end loudspeakers are time- and phase-accurate designs. The audio magazines need to appeal to a broad spectrum of advertisers including many who make speaker systems which are time incoherent.
These designs can be considered a mass-loaded transmission line design or a bass reflex design, as well as a quarter wave enclosure. [39] Quarter wave resonators have seen a revival as commercial applications with the onset of neodymium drivers that enable this design to produce relatively low bass extensions within a relatively small speaker ...
The auditory threshold is taken to be 10 –12 W/m 2 (which corresponds to a pressure level of 20×10 −6 Pa). Therefore a speaker with 100% efficiency would produce an SPL equal to 10log(0.159155/10 –12), which is 112.02 dB. The SPL at 1 metre for an input of 1 watt is then: dB (1 watt) = 112.02 + 10·log()
The term loudspeaker may refer to individual transducers (also known as drivers) or to complete speaker systems consisting of an enclosure and one or more drivers.. To adequately and accurately reproduce a wide range of frequencies with even coverage, most loudspeaker systems employ more than one driver, particularly for higher sound pressure level (SPL) or maximum accuracy.
Passive radiators are used instead of a reflex port for several reasons. In small-volume enclosures tuned to low frequencies, the length of the required port becomes very large. [5] They are also used to reduce or eliminate the objectionable noises of port turbulence and compressive flow caused by high-velocity airflow in small ports.
Surround replay systems may make use of bass management, the fundamental principle of which is that bass content in the incoming signal, irrespective of channel, should be directed only to loudspeakers capable of handling it, whether the latter are the main system loudspeakers or one or more special low-frequency speakers called subwoofers.
A cabinet with two 10" speakers may be called a "210". Another abbreviation that is used is to add the wattage to the name, so a 500-watt Yamaha combo amp with two 12" speakers may be called the "Yamaha 212-500". In some genres, bass players use a large number of speaker cabinets for a powerful onstage sound.