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2. Rectilinear Research Corporation - Wikipedia

   en.wikipedia.org/wiki/Rectilinear_Research...

   Some of these early 3-way models featured 10" and 12" woofers manufactured by Jensen ("Flex-Air") and CTS (Chicago Telephone Supply), 5" whizzer cone squawkers manufactured by Philips Electronics of the Netherlands, and 2" and 2.5" cone tweeters by Peerless of Denmark. [22]

3. Loudspeaker enclosure - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker_enclosure

   Loudspeaker enclosures range in size from small "bookshelf" speaker cabinets with 4-inch (10 cm) woofers and small tweeters designed for listening to music with a hi-fi system in a private home to huge, heavy subwoofer enclosures with multiple 18-inch (46 cm) or even 21-inch (53 cm) speakers in huge enclosures which are designed for use in ...

4. 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 ...

5. Dodge Challenger (2008) - Wikipedia

   en.wikipedia.org/wiki/Dodge_Challenger_(2008)

   The base model Challenger SE was initially powered by a 3.5 L (214 cu in) SOHC V6 engine rated at 250 hp (186 kW; 253 PS) (SAE) and 250 lbf⋅ft (339 N⋅m; 35 kg⋅m) of torque which was coupled to a 4-speed automatic transmission for the first half of 2009, and was then changed to have a standard 5-speed automatic transmission. [12]

6. Subwoofer - Wikipedia

   en.wikipedia.org/wiki/Subwoofer

   From about 1900 to the 1950s, the "lowest frequency in practical use" in recordings, broadcasting and music playback was 100 Hz. [9] When sound was developed for motion pictures, the basic RCA sound system was a single 8-inch (20 cm) speaker mounted in straight horn, an approach which was deemed unsatisfactory by Hollywood decisionmakers, who hired Western Electric engineers to develop a ...

7. Midwoofer-tweeter-midwoofer - Wikipedia

   en.wikipedia.org/wiki/Midwoofer-tweeter-midwoofer

   The midwoofer-tweeter-midwoofer loudspeaker configuration (called MTM, for short) was a design arrangement from the late 1960s that suffered from serious lobing issues that prevented its popularity until it was perfected by Joseph D'Appolito as a way of correcting the inherent lobe tilting of a typical mid-tweeter (MT) configuration, at the crossover frequency, unless time-aligned. [1]