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EL84
Common variants of the EL84, manufactured in Russia, Slovakia, and China
Classification
Thermionic Pentode
Service
Audio
Socket connections
B9A (Noval)
The EL84 is a vacuum tube of the power pentode type. It is used in the power-output-stages of audio-amplifiers, most commonly now in guitar amplifiers, but originally in radios. The EL84 is smaller and more sensitive than the octal 6V6 that was widely used around the world until the 1960s. An interchangeable North American type is the 6BQ5 (the RETMA tube designation name for the EL84).
The EL84 was developed to eliminate the need for a driver tube in radios, so it has rather more gain than is usual in a power pentode. Eliminating a preamplifier triode in radios made them cheaper. Manufacturers were quick to adopt it in general use, and they are found in many old European tube-radios and other audio equipment. A single EL84 was used in low-cost equipment, and a push–pull pair for lower distortion and higher power.
In common with all 'E' prefix tubes, using the Mullard–Philips tube designation, it has a heater voltage of 6.3V. It can produce 17W output in Class AB1 in push–pull configuration. Many guitar-amplifiers routinely run EL84 tubes in excess of 400VDC, with the Traynor Guitarmate reportedly putting out 25W RMS with 2 EL84s in a push–pull configuration and a B+ between 400-420 VDC.
Developed by Philips in 1953, and used in the British Mullard 5-10 amplifier circuit, the EL84 came to prominence when used in Watkins (and later the Vox) amplifiers preferred by many British Invasion bands of the 1960s.[citation needed]
The EL84 is a vacuum tube of the power pentode type. It is used in the power-output-stages of audio-amplifiers, most commonly now in guitar amplifiers...
power output was increased to 20 watts, its output tubes were a pair of 6BQ5/EL84 (the only Fender amp of that time to feature them) and they were operated...
screaming fans at Cliff Richard's concerts. The AC15 was powered by a pair of EL84 tubes, an EF86-driven "Normal" channel, an ECC83-driven "Vib-Trem" channel...
amplifier, until it was replaced by the higher-performance 6P14P (close to the EL84). In some old soviet TV sets (mainly before 1960 on 70 degrees deflection...
EF86 pentode, and power valves were mostly being beam tetrode and pentodes (EL84, EL34, KT88 / 6550, 6L6), in both cases with indirect heating. This reduced...
classes: those with the suppressor grid wired internally to the cathode (e.g. EL84/6BQ5) and those with the suppressor grid wired to a separate pin for user...
rectified, 2 x EL84 power section, 12AX7, EF86, tremolo. The London offers 2-amps-in-one. Released January, 2005. Marquee Club - 35Watt (4 x EL84), tube rectified...
musicians. The Classic 50 amplifiers are members of the Classic Series. Four EL84 power tubes and three 12AX7 preamp tubes Solid state rectifier Fan cooled...
used in guitar amplification and include versions of the popular 12AX7, EL84, EL34, and 6L6 vacuum tubes. Many of the vacuum-tube amplifiers in modern...
wife. His first amps (later named "Liverpool 30") were based on the 4 × EL84 configuration of the Vox AC30. "In beautiful wood cabinetry that matched...
KT66, a beam tetrode similar to the 6L6, as well). 6CA7 KT77 6P27S (6П27С) EL84 6V6 6L6 5881 KT66 KT88 6550 List of vacuum tubes Editors (June 1955). Physical...
"Doc & Brad's fourth amp design". The pentode preamp tube is a 5879 with EL84 output tubes. In June 2021, Paisley promoted the COVID vaccine along with...
features. 30 watts RMS into 16 or 8 ohms All-tube (three 12AX7 and four EL84 tubes) 2-channel preamp 15 inch Blue Marvel speaker (by Eminence) or 15 inch...
the Delta Blues 115 and the Delta Blues 210. They use 12AX7 preamp tubes, EL84 power tubes, and have spring reverb tanks. From 1994 to 1997, a 15 watts...
for automotive receiver applications. Equivalent to the 7061 The pentode EL84/6BQ5 - 9 pin Noval base tube, that although different enough from the 6V6...
beam tetrodes, 6L6 or EL34 but occasionally KT88, 6550, or the lower-power EL84 in Ultra-Linear connection. The output stage is preceded by a voltage amplification...
company's Hurricane won an Editor's Pick Award from Guitar Player for its EL84-driven sound reminiscent of the Vox AC15. Thompson, Art (February 2006)....
preamp tubes (graded to Fender's specifications) two matched Groove Tubes EL84 power tubes (graded to Fender's specifications) fixed power tube bias solid-state...
the relatively small output and the naturally higher frequencies of the EL84 power tubes often lead the Model One and Model Two to be used for studio...
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