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  2. Constant-voltage speaker system - Wikipedia

    en.wikipedia.org/wiki/Constant-voltage_speaker...

    Constant-voltage speaker systems are also commonly referred to as 25-, 70-, 70.7-, 100 or 210-volt speaker systems; distributed speaker systems; or high-impedance speaker systems. In Canada and the US, they are most commonly referred to as 70-volt speakers. In Europe, the 100 V system is the most widespread, with amplifier and speaker products ...

  3. Bridged and paralleled amplifiers - Wikipedia

    en.wikipedia.org/wiki/Bridged_and_paralleled...

    A bridge-parallel amplifier topology is a hierarchical combination of the bridged and paralleled amplifier topologies, with at least four single-ended channels needed to produce one bridge-parallel channel. The two topologies complement each other in that the bridging allows for higher voltage output and the paralleling provides the current ...

  4. Series and parallel circuits - Wikipedia

    en.wikipedia.org/wiki/Series_and_parallel_circuits

    A series circuit with a voltage source (such as a battery, or in this case a cell) and three resistance units. Two-terminal components and electrical networks can be connected in series or parallel. The resulting electrical network will have two terminals, and itself can participate in a series or parallel topology.

  5. Loudspeaker - Wikipedia

    en.wikipedia.org/wiki/Loudspeaker

    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.

  6. Thiele/Small parameters - Wikipedia

    en.wikipedia.org/wiki/Thiele/Small_parameters

    A speaker that can handle 200 watts thermally at 200 Hz, may sometimes be damaged by only a few watts at some very low frequency, like 10 Hz. Power handling specifications are usually generated destructively, by long-term industry standard noise signals (IEC 268, for example) that filter out low frequencies and test only the thermal capability ...

  7. List of Bose home audio products - Wikipedia

    en.wikipedia.org/wiki/List_of_Bose_home_audio...

    Also introduced in 2004, the 251 Series Environmental Speaker was a larger version of the 151 Series. The 131 Marine Speaker was a flushmount speaker that was meant to be installed on a boat, and could be connected to the boat's receiver. The Freespace 51 is an "in-ground" landscape speaker that features omnidirectional, 360-degree sound ...

  8. Seeing the number 1212 everywhere? Here's what it might mean

    www.aol.com/seeing-number-1212-everywhere-heres...

    Angel numbers are a series of digits that can help you focus your attention or predict what might be coming down the metaphorical road. One of the steadiest angel numbers is 1212, which symbolizes ...

  9. Dynaco - Wikipedia

    en.wikipedia.org/wiki/Dynaco

    The A-Series were marketed between from 1970 until Dynaco's demise in the 1980s. The Dynaco A-25 model proved to be extremely successful, selling between 600,000 and 1,000,000 units. [ 2 ] A modified aperiodic bass reflex design using SEAS speakers in a handsome wood cabinet, the A-25 sold for $79.95 each in 1969 [ 3 ] making it competitive ...