RARE MATCHED PAIR 6N23P 1975 HOLY GRAIL Reflector used/ ECC88 6922
- Condition: Used
- Price: 287.49 EUR
- Status: sold
- Item number: 115811020219
- Seller: brandmix19 (618|100.0%)
- Seller information: Commercial (with base shop)
- Item location: Ukraine
- Ships to: Worldwide
- Shipping: 8,25 EUR
- on EBAY
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Description
6n23p Reflector MATCHED PAIR used-2 pcs 1975 Getter on the wire. For better sound. GOOD TESTED. USSR 100% ORIGINAL *.. 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 thats a trip, as at times there are 4 vocal harmonies going on at once. Wow! The HD800s are very transparent, so its 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, Welchs voice natural, no hint of etch*. 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 VParameter measurement and steepness characterization were carried out in AUGUST 2023. MEASUREMENT RESULTS ARE SUSTAINABLE AND STABLE! 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. 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, ?A 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, M? 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. 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.
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