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Speakon panel connectors (center) provided on a professional PA power amplifier by QSC with a power output of 2 x 700 Watt (4 Ohm) The Speakon (stylized speakON) is a trademarked name for an electrical connector, [2] originally manufactured by Neutrik, mostly used in professional audio systems for connecting loudspeakers to amplifiers.
Four-point measurement of resistance between voltage sense connections 2 and 3. Current is supplied via force connections 1 and 4. In electrical engineering, four-terminal sensing (4T sensing), 4-wire sensing, or 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements ...
SMA connectors must not be confused with the standard household 75-ohm type F coax connector (diameters: male 7 ⁄ 16 inch (11 mm) circular or hex; female 3 ⁄ 8 inch (9.5 mm) external threads), as there is only about a 2 mm difference overall in the specifications. Type F cannot be mated with SMA connectors without the use of an adapter.
They offer excellent electrical performance from DC to 4 GHz. An SMB jack has a male center pin, while an SMB plug has a female basket. [1] [2] Connectors are available for two SMB cable sizes: Cable 2.6/50+75 S (3 mm outer / 1.7 mm inner diameter) and; Cable 2/50 S (2.2 mm outer / 1 mm inner diameter)
7.1.2 Concession for use of an alternate connector (NCC DMX512-A) A concession to use an alternate connector is available only when it is physically impossible to mount a 5-pin XLR connector on the product. In such cases all the following additional requirements shall be met: 1) The alternate connector shall not be any type of XLR connector.
For example, NM 14-2 cable contains three conductors (two plus one ground) at 14 gauge, a size typically used for circuits protected at 15 amperes. Circuits with larger currents (such as for electric furnaces, water heaters, air conditioners, or sub-mains to additional circuit panels) will have larger conductors.
The colors of the wire pairs in the cable, in order, are blue (for pair 1), orange, green, and brown (for pair 4). Each pair consists of one conductor of solid color and a second conductor, which is white with a stripe of the other color. The difference between the T568A and T568B pinouts is that pairs 2 and 3 (orange and green) are exchanged.
It is constructed from four resistors, two of known values R 1 and R 3 (see diagram), one whose resistance is to be determined R x, and one which is variable and calibrated R 2. Two opposite vertices are connected to a source of electric current, such as a battery, and a galvanometer is connected across the other two vertices.