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The newer versions of the head and version 3 combos feature updated transformers with 4, 8, and 16 Ω outputs and the version 3 combos feature an 8 in (200 mm) 16 Ω Eminence Lady Luck speaker. In 2007, Epiphone released a speaker cabinet that can be used with the Epiphone Valve Junior, featuring a 12 in (300 mm) 16 Ω Eminence Lady Luck ...
From 1996–2010, the stock speaker is an Eminence Legend 1258 75 Watt (special design) speaker. In 2010 the updated version, (dubbed the Hot Rod Deluxe III) was equipped with a Celestion G12P-80 speaker. In 2018 it was updated again with a Celestion A-Type speaker, pine cabinet, smoother-sounding spring reverb and modified preamp circuitry.
Well-known guitar speaker manufacturers include Jensen, Celestion, Eminence, Electro-Voice, JBL, Peavey, and Vox. Small practice amps often have 6.5 or 8 speakers. Combination (or "combo") amplifier cabinets often have one or more 10 and 12 speakers. The largest speaker "stacks", used in stadium concerts, have eight 10 or 12 in speakers.
Throughout its production, the amplifier has most often featured a Jensen C-12Q series 12-inch loudspeaker, although Oxford 12K5, Marlboro SE, Utah and Eminence speakers have also been used. The 22-watt output was obtained by operating the 6V6 power tubes well in excess of their maximum specified operating voltage.
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.
1955 Twin-Amp, model 5E8. Dual rectifiers and 6L6 power tubes, twin 12" speakers. After the preceding looks of the early 1950s (TV front from 1950 to 51/2; wide panel '52–54), Leo Fender changed the cabinet design again, this time opting for no extra wood on the front of the amp, except for the narrow top and bottom panels that hold the baffle board to the cabinet.
There is an active hobbyist speaker construction group on the Web focusing on full-range drivers and enclosures for them. Since every electronic, mechanical or acoustical component in reproduction chain will, regardless of purpose, degrade fine detail, the fewer components between the amplifier terminals and the listening room, the better.
A speaker with an efficiency of 100% (1.0) would output a watt for every watt of input. Considering the driver as a point source in an infinite baffle, at one metre this would be distributed over a hemisphere with area 2 π {\displaystyle 2\pi } m 2 for an intensity of 1 / ( 2 π ) {\displaystyle 1/(2\pi )} = 0.159155 W/m 2 .