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Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845

Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845

    • Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845
    • Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845
    • Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845
  • Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845

    Product Details:

    Place of Origin: China
    Brand Name: PSVANE
    Certification: Rhos
    Model Number: WE845

    Payment & Shipping Terms:

    Minimum Order Quantity: Negotiable
    Price: Negotiable
    Packaging Details: Standard box
    Payment Terms: Paypal, T/T, Western Union
    Supply Ability: 1000pcs/month
    Contact Now
    Detailed Product Description
    Model: WE845 Brand: PSVANE
    Country/Region Of Manufacture: China Type: HIFI AMP Vacuum Tube
    Height: 145mm Height Without Pins: 130mm

    Stereo Vacuum Tubes PSVANE WE845 audio DIY replica western electric Valve Tube

     

    Item specifics:

    Type: Vacuum tube

    Brand: PSVANE

    Model: WE845

    Country/Region of Manufacture: China

     

    Description:

    1. History of 845 tubes:

    845 tubes were first introduced by RCA in early 1930s to compete with then industry leader Western Electric. This is also the first 3-element vacuum tube to delivery 60 watts per channel power when used in push-pull circuit design with a manageable physical size. The RCA845 became a milestone of vacuum tube production.

     

    2. In 1937, Western Electric responded to competition from RCA845 with their newly designed WE284A – which was considered by users to deliver more lively sound than the RCA845 and with very similar electric specifications. WE284A then became the new benchmark of 845 tubes for the entire industry.

    However at that time the electronics industry didn’t have many applications for this type of high output power tubes so demand was very limited. Not many WE284A tubes were produced then and even fewer are still around today.

     

    3. Owning a pair of original Western Electric 284A is a dream for many HiFi audiophiles who own 845 tubes amps, in order to experience what the past glory of tube production could bring to their music system today. However, the scarcity has driven the price to very high level that many audiophiles cannot afford or obtain.

     

    4. Creation of Psvane WE845:

    The Psvane WE845 is a hybrid creation by combining the characteristics of both RCA845 and WE284A tubes. The first Psvane WE845 prototype was sent to Japan in late 2012 for evaluation and the reviewer commented: ‘It’s an ultimate pleasure to re-live the RCA845 sound from Psvane WE845 and I hope you can improve the sound to the WE284A level.’. Psvane design team took another 8 months to improve on design then we come to have today’s final version of the WE845 Replica.

    Feature:

     

    5. WE845 is direct-heated type thorium tungsten cathode triode, class A1 and AB1

     

    Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845

     

    Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845

     

    Height 145mm Vacuum Tube Radio Direct Interelectrode Capacitances Input 6PF PSVANE WE845


    Heater
    Uf---------------------------------------10 V
    If----------------------------------------3.25 A
    Maximum Rating
    Ua----------------------------------1250 V
    Pa-------------------------------75 W
    Pout(max.sig)--------------------------150 W
    Ia(max)------------------------------120 mA;
    Direct Interelectrode Capacitances
    input----------------------------------6 PF
    output----------------------------------4.5 PF
    grid to plate----------------------------------14.5 PF


    Static parameter
    Ua--------------------------------------1250 V
    —Ug-------------------------------------200 V
    Ia---------------------------------------80 mA
    Gm--------------------------------------3 mA/V
    ri----------------------------------------1.7 KΩ
    u----------------------------------------5
    RL---------------------------------------3.4 KΩ
    Ug(pk)------------------------------------69 V
    Pout-------------------------------------15 W

     

    Recommended Operating Conditions(reference value
    class A1 .single tube:
    Ua-----1000 1000 1250 V
    —Ug--- 145 155 209 V
    RL-----6 9 16 KΩ
    Ia------90 65 52 mA
    Gm-----3.1 — — mA/V
    Ug(pk)--— 110 148 V
    ri------1.7 1.9 2.1 KΩ
    Pout----24 21 24 W


    Push-pull.class AB1:
    Ua------------------ 800 1000 1000 1250 V
    —Ug---------------- 125 170 175 225 V
    RL------------------ 4.5 4.6 4.6 6.6 KΩ
    Ia--------------------80 70 40 40 mA
    Ug(pk)----------------177 240 — — V
    Ia(mAx.sig)---------170 230 230 240 mA
    Pout----------------40 75 75 115 W

     

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    Contact Details
    Youda Audio Co. Limited

    Contact Person: Vanessa

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