Alpha 500 kOhm log / Audio, 3,8"

• Hiwatt style heat shield
• Size: approx. W=255 mm h= 125 mm
• Material: 1.5 mm aluminum

• Type: Aluminum Electrolytic Capacitors
• Capacitance: 10 µF
• Voltage Rating: 450 V
• Tolerance: +/- 20%
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 10 mm x 30 mm
• Termination Style: axial

• Type: Aluminum Electrolytic Capacitors
• Capacitance: 100 µF
• Voltage Rating: 100 V
• Tolerance: +/- 20%
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 10 mm x 30 mm
• Termination Style: axial

• Type: Aluminum Electrolytic Capacitors
• Capacitance: 22 µF
• Voltage Rating: 450 V
• Tolerance: +/- 20%
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 16 mm x 30 mm
• Termination Style: axial

• Type: Multisection Capacitor
• Capacitance: 32 + 32 µF
• Voltage Rating: 500 V
• Tolerance: - 10% / +30 %
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 35 mm x 50 mm
• Termination Style: radial, solder lugs

• Type: Aluminum Electrolytic Capacitors
• Capacitance: 47 µF
• Voltage Rating: 500 V
• Tolerance: +/- 20%
• Operating Temperature Range: - 40°C / + 85 °C
• Dimensions: Ø 21 mm x 37 mm
• Termination Style: axial

ORANGE DROP®, 716 P Series

• Polypropylene Film Capacitors, extended foil
• Voltage Rating: 600 V
• Operating Temperature Range: - 55°C / + 85 °C
• Termination Style: radial, copper leads

• Type: Metalized Polyester Film Capacitors (PET)
• Voltage Rating: 630 VDC / 220 VAC
• Tolerance: +/- 10%
• Operating Temperature Range: - 55°C / + 100 °C
• Termination Style: axial

Replacment for Fender Amps

• Chassis Hole: 17,5 mm
• Threading: 9/16 - 24

The Sovtek 12AX7WA is a defacto standard in 12AX7 tubes for many years yet because of its high dependability and its low noise floor.

With a soft and detailed sound, as well as sufficient headroom, the TT 12AU7/ECC82 enhances the sound characteristics of any amplifier, whether it's for guitar, bass, or high-end. These tubes deliver a dynamic range, captivating listeners and musician with uncompromising clean sounds and rich overdrive.

Features:

• Detailed sound
• Ideal for both low and high gain amplifiers

Tip:
Often, 12AU7 and 12AT7 types are used instead of 12AX7 tubes to either reduce the overall power of the amplifier or to just reduce the overloading of the preamp. In comparison to a 12AX7, the 12AU7 brings about a very large sonic difference, typically much greater than switching from 12AX7 to 5751 or 12AT7.

When using a 12AU7 in a driver stage normally designed for 12AX7, the overall power of the power stage is usually reduced. The extent of this difference depends on the amplifier or circuit. For example, a Marshall amplifier with a 12AX7 in the PI stage set at volume 5 will then reach the same volume level with a 12AU7 at volume 6 (perceived volume, not measured).

Electrical Properties

• Heater Voltage (Uf): 6.3V or 12.6V
• Heater Current (If): 300mA at 6.3V, 150mA at 12.6V
• Anode Voltage (Ua): Maximum 300V
• Grid Voltage (Ug1): -8.5V (typical)
• Anode Current (Ia): 10.5mA (typical)
• Anode Dissipation: Maximum 2.75W per triode
• Anode Resistance (ra): 7.7kΩ
• Amplification Factor (μ): 17
• Transconductance (S): 2.2mA/V
• Input Capacitance (Cin): 1.6pF
• Output Capacitance (Cout): 1.6pF

Mechanical Properties

• Socket: B9A (Noval)
• Number of Pins: 9

Pin Configuration

• 1 Anode (Triode 1)
• 2 Grid (Triode 1)
• 3 Cathode (Triode 1)
• 4 Heater (f)
• 5 Heater (f)
• 6 Anode (Triode 2)
• 7 Grid (Triode 2)
• 8 Cathode (Triode 2)
• 9 Center Heater (f)

Application Notes

• Heater Operation: The tube can be operated at 6.3V or 12.6V, depending on the circuit design.
• Grid Resistors: It is recommended to use grid resistors of at least 1MΩ to ensure stable operation.
• Coupling Capacitors: Capacitors with low capacitance (typically 0.1µF) are recommended to minimize high-frequency interference.