AlesaVaicVacuumTechnology
AV 320B SL Datasheet
This tube is a version of the AV32B, designed for the VAIC amplifiers. The main difference with the AV32B is the more rugged construction. It has larger cooling plates, and a larger bulb size.
Features
- This tube uses AVVT's unique Super-Linear Patent (Note1)
- AVVT's patented ribbon filaments with 16 flat Surfaces, for more linearity
- Two extra large getters
- Internal cooling plates and metal encapsulated tube base for minimized grid current
- Unbreakable Hard-Glass. Bulb is larger sized than normal 32B.
- Anti-microphonic Suspension in Tube Top
- Uses unbreakable hard-metal filaments. (Note2)
- Ceramic UX4 Socket with Gold Plated pins
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AV 320B SL
Click here to enlarge Picture
AVVT 320B Curves
AV 320B SL Filament Ratings
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Filament Voltage |
5 Volt (AC or DC)
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Filament Current |
2.4 Ampere
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AV 320B SL Maximum Conditions (See also Note 3)
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Plate Voltage |
600Volt
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Plate Current |
200mA
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Plate Dissipation |
65Watt
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Power Output in Class A |
21Watt
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AV 320B SL Typical Data (See also Note 4)
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Plate Voltage |
400V
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Plate Dissipation |
60 Watt
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Plate Current |
150mA
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Grid Voltage |
-76Volt
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Plate Impedance |
525 Ohm
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Amplification Factor |
3,4
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Transconductance |
6.5 mA/V
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Load Impedance |
1500 - 3500Ohm
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Grid resistor |
50k Ohm
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Operating Lifetime |
40.000 hours
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AV 320B SL Mechanical Data
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Size |
180 x 65mm (Includes Socket)
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Weight Standard Version |
220 Grams
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For further information about our products, please visit http://www.jacmusic.com
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Note 1) Super Linear Anodes are based on an exclusive AVVT patent. The cold ends of the filaments do not have a very good function, and cause distortion. This tube has four cavities inside the anode, that cover the cold ends of the filaments. These cavities are covered by four nickel plates, that you can see from the outside. Within these cavities, anode current will not be able to flow, and this disables the emission of the cold end of the filaments.
Note 2) Hard-metal filaments are operated at much higher temperature than normal tubes. This tube will glow bright orange, instead of the dark orange color of nickel filament tubes.
Note 3 Individual Test data, such as: Matching Data, Grid Current, Vacuum, Filament Current, etc, are on the Certificate that comes with each individual Tube. Each tube has is numbered, inside the bulb with a metal Tag
Note 4 Typical Data When operated at lower power level, refer to typical data of the 300B for mu, transconductance, and Plate Resistance. You can test this tube with normal 300B settings, given that the tube tester can do 2.4Amps filament current. |
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