PAIR TUNG - SOL 5881 JAN CTL 6L6 WGB BRN BASE GREY PLATE DATE MATCH POWER TUBES
Item History & Price
| Reference Number: Avaluer:29742686 | Country/Region of Manufacture: United Kingdom |
| MPN: 6L6, 5881 | Type: Power Tubes |
| Brand: Tung-Sol |
I am back with more great tubes. For auction is (1) ea. PAIR TUNG-SOL 5881 JAN CTL 6L6 WGB BRN BASE GREY PLATE DATE MATCH POWER TUBES AUDIO. Eico 625 test range of overall good is 57-100, range of average new is 80 and above. These tubes have a merit of 87 and 86. I have collected thousands and thousands of fantastic tubes over the years and now it is time to sell as I have acquired an abundance of medical debt. All tubes are sold as is. All actions will start at $5 regardless of ...tube value. I do combine shipping, if you were to win multiple auctions, please wait for invoice. Thank you for looking
Unless you know exactly what you are doing, do NOT just plug in a pair of true KT66's in your amplifier if it calls for the 6L6. Another issue with the 6L6 tube family is that the older 6L6's (6L6, 6L6G, 6L6GA) are designed to handle lower plate voltages and maximum plate dissipate is only 19 watts. Although these tubes work fine in older amps with maximum plate voltages under 400 volts, and where biasing and operation has maximum plate dissipation limited to 19 watts, these tubes will NOT work in amps with plate voltages above 400 volts and or where the circuit will cause them to dissipate over 19 watts. In these applications (like Fender guitar amps made after around 1955) you need to use the 6L6GB, GC, or 5881 spec tubes. These can handle as much as 500 volts to the plate and will dissipate 30 watts. 6L6, 6L6G, and 6L6GA tubes should only be used in amplifiers with plate voltages under 400 volts. Usually 20 watt amplifiers of pre 1955 vintage. The 6L6GB, 6L6GC, and 5881 will work in any amplifier that calls for a 6L6 type tube.
Tube type: Beam Power Tube Power/Output BaseOctal (Int.Octal, IO) K8A, USA 1935 (Codex=Udb)FilamentVf 6.3 Volts / If 0.9 Ampere / Indirect / Parallel, (AC/DC)DescriptionBeam-power-tetrode, launched spring 1936 by RCA. Predecessors: none / Successors: none, still in production. By demand of more output power new output tubes appeared in 1936 with plate dissipation increased from 9 to 18 watts. In Europe it were the pentodes AL5 (4Vf) and EL5 (6.3Vf), in the USA it was the worlds first and most famous beam-power-tetrode, the 6L6. First it appeared as metal tube, then in several glass versions, e.g. as 6L6GC with 35 watts dissipation.
Unless you know exactly what you are doing, do NOT just plug in a pair of true KT66's in your amplifier if it calls for the 6L6. Another issue with the 6L6 tube family is that the older 6L6's (6L6, 6L6G, 6L6GA) are designed to handle lower plate voltages and maximum plate dissipate is only 19 watts. Although these tubes work fine in older amps with maximum plate voltages under 400 volts, and where biasing and operation has maximum plate dissipation limited to 19 watts, these tubes will NOT work in amps with plate voltages above 400 volts and or where the circuit will cause them to dissipate over 19 watts. In these applications (like Fender guitar amps made after around 1955) you need to use the 6L6GB, GC, or 5881 spec tubes. These can handle as much as 500 volts to the plate and will dissipate 30 watts. 6L6, 6L6G, and 6L6GA tubes should only be used in amplifiers with plate voltages under 400 volts. Usually 20 watt amplifiers of pre 1955 vintage. The 6L6GB, 6L6GC, and 5881 will work in any amplifier that calls for a 6L6 type tube.
Tube type: Beam Power Tube Power/Output BaseOctal (Int.Octal, IO) K8A, USA 1935 (Codex=Udb)FilamentVf 6.3 Volts / If 0.9 Ampere / Indirect / Parallel, (AC/DC)DescriptionBeam-power-tetrode, launched spring 1936 by RCA. Predecessors: none / Successors: none, still in production. By demand of more output power new output tubes appeared in 1936 with plate dissipation increased from 9 to 18 watts. In Europe it were the pentodes AL5 (4Vf) and EL5 (6.3Vf), in the USA it was the worlds first and most famous beam-power-tetrode, the 6L6. First it appeared as metal tube, then in several glass versions, e.g. as 6L6GC with 35 watts dissipation.
