A 7189 tube is very similar to an el84 but it is more heavy duty. My 7189 tube is identified within the octagon with usa above it, indicating rca manufacture, but this nos one was relabeled and marketed by raytheon with an apparently original box. The el84 was developed to eliminate the need for a driver tube in radios, so it has. The 6p1pev output pentodes are miniature devices enclosed in glass bulb and are provided with a ninepin base and an indirectly heated oxidecoated cathode. Gec, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. See wikipedias article on explosive forming for more on this topic. Since my amp can run hotter than some other el84 amps, i was a. The 7189 differs from el84 and 6bq5 tubes in that it has a higher maximum plate wattage, plate voltage, and screen voltage rating. Ecia works extensively to verify that this data is only for products from distributors that are authorized or franchised.
To demonstrate its use and quality the mullard applications lab produced an amplifier design. The performance figures given here refer to class a operation. In addition to the data i have scanned and posted, if youre looking for data on a particular tube you should visit tsdl on duncanamps website, or franks tube data. Try searching the tube data sheet locator, the worlds biggest index of tube datasheets other pages online with tube data. Net tube data here youll find manufacturers data sheets and curves for many popular and some not so popular electronic valve types.
Most of the information out there is more about hifi applications for the 7189 trying to get more power out of the 6bq5 platform. Nos 7189 tubes are quite hard to find in matched quads. Usually you can put a 7189a in place of an el84 but not the other way around. However, i have read on a number of forums that no one can find a data sheet for the sovtek el84m so how do you make a comparison. The el84 output pentode was introduced by mullard in 1954. Do not use el84s as you will damage the tubes and possibly the expensive z wreck amp itself. Tungsol has reissued the rare 7189, a high fidelity audio specific variation on the el84 tube. Easily select individual manual pages and print out. There is a new el84 tube in the shuguang pvane psvane line and it seems to have specs that meet andor exceed nos 7189 specs. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. On my rcas the 6bq5 is applied within their typical octagon with usa above it, additionally painted on the glass is 6bq5el84, the box has 6bq5el84 as well. Pdf 189a 189a k556iitd524 k556i itd525 k556 itd526 7189a 7189 tube 7189a tube 7189 7189 tube data 0 watts amplifier circuit diagram 8 tube 400h general electric.
Another spot to look, which is especially useful if youre looking for replacement types and tubes with similar bases or. With many yeas production experience, strict control 1. Jj electronic vacuum tubes, capacitors, amplifiers. Sika warrants this product for one year from date of installation to be free from manufacturing defects and to meet the technical properties on the current product data sheet if. The 7189 industrial tube is similar to the common el84 european or 6bq5 american 9pin power pentode. On the other hand, a 6bq5 in a 7189 circuit is simply asking for trouble fast. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your. I was just curious about other peoples experience in guitar amps. Furthermore, the weight of this tube is 19 grams which is 40% heavier as regular el84, like for instance the philips nos. We are not affiliated with any of the tube manufacturers and do not imply any. The tubes i bought where the russian el84 7189a 6bq5 tubes.
Order preferred series 7189 premium el84 vacuum tubes online, in stock and ready to ship. Matching in pairs or quads in included in the price. Free vacuum tube data sheets free vacuum tube substitution. Free vacuum tube data sheets free vacuum tube substitution guide manuals free radio tube data manuals free tube base diagrams. U a 250 v u g2 250 v u g1 7,3 v i a 48 ma i g2 5,5 ma s 11,3 mav. The sovtek el84m is the military version of the el84. Recent listings manufacturer directory get instant.
These are tubes that consistently provide the 7189 is a power amplifier pentode designed for use in audiofrequency power output stages of high fidelity amplifiers, guitar amplifiers, and other radio receivers. Condensor tube cleaning decontamination equipment water blasting. Due to its rugged construction and conservative ratings, it is the most reliable current production el84 type available for use in vox. The 7189 differs from el84 and 6bq5 tubes in for scott, eic together for the best tube value we can provide. Russian tube 5c3s is a quality equivalent of the 5u4g. The tungsol el846bq5 was a popular oem tube for americanmade el846bq5 guitar amplifiers, such as those built by gibson and harmony. Elb4tk tube data sheet mechanical base number of pins heater requirements parameter heater voltage heater current r. Our preferred series 7189 tube is a versatile high quality option for el84, 6bq5, and 7189 tube circuits because of its clean headroom, power, dynamics and harmonic content. The z wreck can only use 7189 tubes due to the higher plate voltages. If you cant find what you need here, try duncans tube data sheet. The 7189 european equivalent e84l is a power pentode tube with a b9a. With the tubes comes a four page original printed data sheet, listing in full.
This list is biased by the tubes that i have encountered during the repair of the many tube amps that have come to my repair shop. This allowed for improved tube stability at higher operating voltages, and this the 7189a had higher grid no. Fender do the same but the over run margin is less. The 7189 is a poweramplifier pentode designed for use in the audiofrequency power output stage of television and radio receivers and highfidelity amplifiers. You can use the 7189 tubes in another amp that specs el84s but not the other way around. At the bottom of this page youll find some links to other tube datasheet sites in. The 7189 a is unilaterally interchangeable, both electrically and mechanically, with the 7189. Due to many requests by fans of our tungsol line of tubes, the tungsol el846bq5 has been reissued. The sovtek el84m is a rugged military issue el846bq5 that can withstand higher plate current than any current production el84, and is a suitable replacement for the 7189. Output pentode el84 is an output pentode for use in guitar and hifi amplifiers. Carbon steel strip and spring steel sheet is available most commonly in the hardened and tempered condition, though certain sizes are available in the annealed condition. Ive posted before on replacement power tubes for my scott 222c tube amp which uses four 7189 tubes. The 6p14pev tube is high reliability and long live output pentode designed for lf power amplification.
Widely used in output stages of low frequency amplifiers. But the 7189 is designed for circuits operating in the 400 volt range. The datasheet details use in ultralinear applications which magnatone used. Please note, while the 7189 is just an upscale el84, the 7189a is a higher power tube with a different pintie. This 7189 tube is rated for higher power and plate voltage plus longer life. Preferred series 7189 pentode for power amplifier applications.
The 7189 and 6bq5el84 exist in much the same relationship. Pentode for af power amplifier applications, 6bq5 datasheet, 6bq5 circuit, 6bq5 data sheet. The tubes are well matched and have very nice original boxes with the tube data sheet included. Noval u f 6,3 v i f 0,760 ma typical characteristic. In expresslydesigned 6bq5 circuits, the 7189 will perform much like the 6bq5, and will show little improvement in performance, if any. The 1959 miniwatt technical data book from philips lists the 6bq5 as the. Tube 7189a or rohre 7189a id66, vacuum pentode, noval, b9a and poweroutput shown. I try to concentrate on popular andor readily available tube types. Description the 6p1pev61 longlife output beam tetrode is designed for amplification of lowfrequency power. The sovtek el84m has a clean sound, and nice balance. The el84 is a thermionic valve of the power pentode type.