RARE 6N23P MATCHED QUAD 1975 SWGP Reflector NOS / ECC88 6922 E88CC 6DJ8




Item History & Price

Information:
Reference Number: Avaluer:20543558Non-Domestic Product: No
Type: Vacuum TubeModel: 6n23p
MPN: Does Not ApplyModified Item: No
Brand: REFLECTORCustom Bundle: No
Original Description:
6n23p Reflector MATCHED QUAD new -4 pcs  1975 RARE! Getter on the wire. For better sound.GOOD TESTED=100%. USSR                              100% ORIGINAL RARE VINTAGE RADIOLAMP NOS.

... sans-serif; font-size: 18px; white-space: pre-wrap; background-color: rgb(245, 245, 245);">Years of release of 50-70 years, such radio tubes are called New Old Stock, (NOS.). These lamps differ from modern ones in a better sound.
*..This is what  says about the  '75 Reflektor  (Single Wire Getter Post) Silver Shield :The '75 SWGP Silvers  were the best. What did they do different? They could discern the most subtile vocal overlays, no matter how complex. Now on these tracks that's a trip, as at times there are 4 vocal harmonies going on at once. Wow! The HD800s are very transparent, so it's all presented in 3D fashion, the vocals layered at different depths in the sound field! The bass was deep and well defined, with excellent timbre. Tonally perfect mid-range, Welch's voice natural, no hint of etch*. 
   The measurements were carried out on an installation consisting of a powerful stabilized power supply UIP-2, power supply B5-7, digital meters (class 0.5) V7-22A, Shch4300 and precision voltmeter class 0.2 M2020. The measurements were carried out not at one point, but the entire anode-grid characteristic was taken at the passport value of the anode and filament voltages. According to the current-voltage characteristic, its slope was calculated.                                               
Selection of radio tubes. Why do you need to do this?
The selection of lamps is necessary for the correct and high-quality operation of the amplifier. The lamp is set to conditions identical to the amplifier. The sameness at maximum modes is checked at high voltages and currents. When choosing new lamps from a factory batch, for example, you can detect a deviation in the characteristics of the factory specifications for the anode current, and if you do not select the radio tubes in pairs, quartets, etc., this can lead not only to poor operation of the amplifier with high distortions, background , but also its failure. And even if several new lamps are from the same batch, this is not a complete guarantee of success.
The currents of the first and second anodes with:Ua=90VUh=6.3VAnode currents with bias voltage minus 0.5 V
Main technical characteristics 6N23P:
The heating voltage ...... 6.3 ± 0.6 V
Current of heating ... 310 ± 25 mA
The anode voltage is nominal (constant) ...... 100 V
Anode voltage limit (constant) ...... 300 V
The current of the anode of each triode 15+-5Kathode limiting current ...... 20 mA
The cathode current is the limiting (pulse amplitude) ...... 200 mA
The grid voltage (constant) ...... 9 V
The grid voltage is the limiting (pulse amplitude) ...... 260 V
Power dissipated by the anode, limiting ...... 1.8 W
Power dissipated by the grid, limiting ...... 0.03 W
The voltage between the cathode and the heater is the limiting (constant) ...... -200 V
The steepness of the characteristics of each triode 8.... 12.7 mA / V
The gain of each triode is 34 ± 9
Input resistance at a frequency of 200 MHz ...... 500 Ohm
Equivalent resistance of intra-lamp noise ...... 300 Ohm
Resistance in the cathode circuit for automatic bias ...... 680 Ohm
Resistance in the grid limit chain ...... 1 Om
Input capacitance of each triode ...... 3.6 pF
Output capacitance of the first triode ...... 2.1 pF
Output capacitance of the second triode ...... 1.9 pF
The capacitance of each triode is 1.5 pF
Criteria for evaluation:reverse grid current, μA not more than 1slope of the characteristic, mA / V not less than 7.5
Maximum permissible electrical quantities:
Voltage of glow, V 5.7 - 7
Anode voltage, V 300
Anode voltage at a locked lamp, V 470
Anode voltage when the lamp is locked in pulse, V 1000
The grid voltage in the pulse is negative, V 200
Voltage between cathode and heater, V:
with a positive potential of the heater 200
at a negative potential of the heater 200
Cathode current, mA:
average of 20
in the pulse 200
Power dissipated by the anode of each triode, W 1.8
Power dissipated by the grid of each triode, W 0.03
Resistance in the grid circuit, MΩ 1
Lamp cylinder temperature, deg. C 120
Resistance to external influences:
vibration acceleration at 50 Hz, g 2.5
acceleration at multiple impacts, g 35
NOTE:
When operating the lamp, the values of the values that determine the mode should not exceed the specified limits. Failure to do so may result in loss of operability.
LiteratureYu.I.Tempner, V.E. Osherov. Handbook on broadcasting receivers (under the general editorship of VV Ogievsky). - K .: "State Publishing House of Technical Literature of Ukraine", 1949. - 371 p.

Dear Customer. I draw your attention to the fact that these unique and remarkable 6n23p reflector lamps of 1975 are a vintage product. Therefore, it is very important for us to carry out a thorough and high-quality training of lamps in different passport modes before selling, which requires a lot of time and constant monitoring of the process. It is our specialists who with the help of highly stable voltage sources and multi-turn variable resistors stabilize the anode currents, and the measurement parameters become stable. Restores cathode emission and improves vacuum. These are complex methods that can take about 4 hours per lamp. But only after such a workout the lamp is reliable, it opens and sounds beautiful. Be sure the result is worth it. We do it for you.
 Buy a quality and prepared product. Have a nice and enjoyable shopping!

I greatly appreciate your POSITIVE FEEDBACK. Please do not leave Negative feedback without asking for help. If you are unsatisfied with your items when received, please do not hesitate to contact us via. EBAY message, we will try our best to solve the problem within 24 hours.



    Similar items


  • 6n23p Matched Quad / E88cc / Ecc88 / 6dj8 Nos Voskhod Rocket Ussr 1979 Year

    6n23p Matched Quad / E88cc / Ecc88 / 6dj8 Nos Voskhod Rocket Ussr 1979 Year

  • Matched Pair 6n23p Tube Silver Shield 1975 Rare Swgp Reflector Nos/ Ecc88 6922

    Matched Pair 6n23p Tube Silver Shield 1975 Rare Swgp Reflector Nos/ Ecc88 6922

  • Rare Matched Pair 6n23p Tube 1975 Swgp Reflector Same Date/ Ecc88 6922 E88cc

    Rare Matched Pair 6n23p Tube 1975 Swgp Reflector Same Date/ Ecc88 6922 E88cc

  • 2 6n23p Tube Silver Shield 1975 Rare Swgp Reflector Nos/ Ecc88 6922 E88cc 6dj8

    2 6n23p Tube Silver Shield 1975 Rare Swgp Reflector Nos/ Ecc88 6922 E88cc 6dj8

  • 4x 6n23p - Ev (e88cc,  Ecc88,  6922) Reflector (, Nos,  Otk) Matched Quad,

    4x 6n23p - Ev (e88cc, Ecc88, 6922) Reflector (, Nos, Otk) Matched Quad,

  • Rare Date Matched Quad Nos Nib Rca 6l6gc Amplifier Power Tubes Exc 6l6 Kt66

    Rare Date Matched Quad Nos Nib Rca 6l6gc Amplifier Power Tubes Exc 6l6 Kt66

  • Rare Matched Quad 6n1p/ Ecc88 / 6dj8 Nos/nib Tubes Novosibirsk From 1960

    Rare Matched Quad 6n1p/ Ecc88 / 6dj8 Nos/nib Tubes Novosibirsk From 1960 ' S

  • Rare Date Matched Quad Amperex Metal Base Bugle Boy 6ca7/el34 Tubes Strong

    Rare Date Matched Quad Amperex Metal Base Bugle Boy 6ca7/el34 Tubes Strong


    • You might also like


    • Match 4 Tube Western Electric We 300b In Wood Box 2007 Nos

      Match 4 Tube Western Electric We 300b In Wood Box 2007 Nos

    • Western Electric 300b Engraved Base Tube 3500/2900

      Western Electric 300b Engraved Base Tube 3500/2900

    • 2 X 4212e Stc Tubes Nos/nib.  Perfect = 212e Western Electric = Cv1252 C14enair

      2 X 4212e Stc Tubes Nos/nib. Perfect = 212e Western Electric = Cv1252 C14enair

    • 2x Pedersen U4e8 Px4 Close Equivalent Rare Black Plate Triode Tube,  Valve

      2x Pedersen U4e8 Px4 Close Equivalent Rare Black Plate Triode Tube, Valve

    • Pair,  Western Electric 101d Tennis Ball Radio/audio Tubes,  Strong On Amplitrex

      Pair, Western Electric 101d Tennis Ball Radio/audio Tubes, Strong On Amplitrex

    • Match Pair Western Electric We 300b

      Match Pair Western Electric We 300b

    • One Pair Nos Gec 6sn7/cv1988/b65 Metal Base Cup Getter

      One Pair Nos Gec 6sn7/cv1988/b65 Metal Base Cup Getter

    • Pedersen U4e8 Px4 Close Equivalent Rare Black Plate Triode Tube,  Valve

      Pedersen U4e8 Px4 Close Equivalent Rare Black Plate Triode Tube, Valve

Avaluer          About Us          Privacy Policy          Contact Us          UP
© 2022, avaluer.net, Inc. or its affiliates