2-way speaker system
21Passive radiator (speaker) — A speaker enclosure using a passive radiator usually contains an active driver (or main driver), and a passive cone (or drone or passive radiator). The active driver is a regular driver, and the passive is typically the same or similar, but… …
22Interstate Highway System — Interstate redirects here. For other uses, see Interstate (disambiguation). Interstate Highways in the 48 contiguous states. Dark orange routes are built and open freeways, blue are open auxiliary routes, and green dashed indicates proposed… …
23Westminster system — The Westminster system is a democratic parliamentary system of government modelled after the British government (the Parliament of the United Kingdom). The term comes from the Palace of Westminster, the seat of the UK Parliament.The system is a… …
24Presidential system — [clarification needed]Presidential republics with a full presidential system are denoted in Blue. Countries with a semi presidential system are denoted in Yellow. Parliamentary republics with an exe …
25Horn speaker — A horn speaker is a loudspeaker which uses a horn to increase the overall efficiency of the driving element, typically a diaphragm driven by an electromagnet. The horn itself is a passive component and does not amplify the sound from the driving… …
26Ninja Gaiden (Nintendo Entertainment System) — Ninja Gaiden …
27Second Party System — The Second Party System is a term of periodization used by historians and political scientists to name the political system existing in the United States from about 1837 to 1852. The system was characterized by rapidly rising levels of voter… …
28DTS (sound system) — For other uses, see DTS (disambiguation). DTS, Inc. Type Public Traded as NASDAQ: DTSI …
29Radio communication system — A radio communication system send signals by radio. [cite book | title = Wireless Network Performance Handbook | author = Clint Smith, Curt Gervelis | year = 2003 | publisher = McGraw Hill Professional | isbn = 0071406557 | url =… …
30Dublin Mountains Way — (Slí Sléibhte Bhaile Átha Cliath) Waymarker on the Dublin Mountains Way at Fairy Castle with yellow man symbol and “DMW” sign Length 52 kilometres (32 miles) …
