Tube-Town GmbH

• Material:  Bakelit
• for Tube Type: EL34, 6L6, KT88, 6V6, 6550 etc.

Noval Socket - Pack of 5

• Ceramic
• Chassis mount with shield
• Termination Style: solder lugs
• for Tube Type: 12AX7, 12AT7, 12AU7 etc.

Kit of a bias probe for indirect measurement of the quiescent bias current of a tube. The adapter is placed between the tube and the socket and is connected to a standard voltmeter (not included). Pay attention to the quality of the meter and to sufficiently charged batteries!

The quiescent current is measured indirectly via a precision resistor built into the adapter. The advantages of this measuring method are harmless voltages in the mV range at the measuring plugs as well as short ways for the current, since it does not have to be led through the measuring device (common practice with many measuring adapters of Far Eastern production). As a result, there is no risk of oscillation of the amplifier, which could damage the tubes or the amplifier itself.

Note: This adapter cannot be used when additional tube brackets are installed. These must be removed before using the measurement adapter and reattached after the measurement is complete.

Measurement procedure
Determine the resistance of the adapter, including the test leads. Connect the adapter to the meter, but do not connect it between the tubes and the amplifier. Select the ohms range on the meter and note the reading, e.g. 1.1 ohms.
For the final measurement, insert the adapter between the tube and the de-energized amplifier, connect it to the meter, select the mV range and switch on the amplifier. When the amplifier has reached a stable operating condition, read the value in mV from the meter and calculate the quiescent current using Ohm's law.

Example
Measured voltage = 47 mV, adapter resistance = 1.1 ohms.
Formula (I = V / R) or in this case
Bias Current (in A) = Measured Value (Voltage in V) / Measured Value (Resistance in Ohm)
0.047V / 1.1 Ohm = 0.042A or 42mA

For the calculation of the correct bias current as well as further information on bias measurement please refer to further documents or the bias setting instructions in the info section as well as the manual of the amplifier itself.
This adapter is suitable for all EL34, 6L6, 6550, KT88, 6V6, 6CA7 and other tubes with the same pinout.

Attention HIGH VOLTAGE ! Measurements and work on tube amplifiers should only be done by qualified personnel.

Files:

• Datasheet

• Type: 7-Pin Socket 7EK
• Version: Ceramic Chassis mount
• Termination Style: solder lugs
• for Tube Type: 12K5 etc.

• Type: 7-Pin Socket 7EK
• Version: Ceramic
• Termination Style: Print mount
• for Tube Type: 12K5 etc.

• Type: Pan Head, slotted
• Material: Steel
• Strength class: 4.8
• Surface: Zinc-plated
• DIN: 84
• ISO: 1207
• Price: per pcs.

• Type: Countersunk raised head with cross recess
• Material: Steel
• Strength class: 4.8
• Surface: Zinc-plated
• DIN: 966
• ISO: 7047
• Price: per pcs.

• Type: Hex Head
• Material: Polyamide
• Color: white
• ISO: 4017
• Price: per pcs.

• Type: US-Standard Flat Head, cross recess
• Material: Steel
• Strength class: 4.8
• Surface: Zinc-plated
• Price: per pcs.

Set of componentes for building the TT Lummerland Express - Version Mk2
Now build on PCB
Please visit the >>Project page for more infos about the amp.

INCLUDED:

• Mains Transformer universal for 120-230-240 V mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (2 x 12AX7,1 x ECC99)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Set of componentes for building the TT Emma
Please visit the >>Project-Page for more Infos

INCLUDED:

• Mains Transformer universal for 120-230-240 V mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (1 x EH 12AY7, 1 x 12AX7,1 x ECC99)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Set of componentes for building the TT Molly LowPower Guitar Amp.
Please visit the >>Project page for more infos about the amp.

INCLUDED:

• Mains Transformer universal for 120-230-240 V mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (1 x EF86, 1 x 12AX7,1 x ECC99)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Set of componentes for building the TT Tube-Reverb.
Please visit the >>Project page for more infos about the amp.

INCLUDED:

• Mains Transformer for 120, 230 and 240V mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (1 x 12AX7, 1 x 12AT7,1 x JJ EL844)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate
• REVERB TANK

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Set of componentes for building the TT Wild13. Please visit the >>Project page for more infos about the amp - Version 2023.

INCLUDED:

• Mains Transformer universal for 120-230-240 V mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (2 x 12AX7, 1 x ECC99)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Set of componentes for building the TT HotLukas. Please visit the >>Project page for more infos about the amp - Version 2023.

INCLUDED:

• Mains Transformer universal for 120-230-240 V mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (2 x 12AX7, 1 x ECC99)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Set of componentes for building the TT LoW Jim - Version 2023. Please visit the >>Project page for more infos about the amp.

INCLUDED:

• Mains Transformer for 0-220-230-240 V mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (2 x 12AX7, 1 x EL84)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Set of componentes for building the TT Jim HP. Please visit the >>Project page for more infos about the amp.

INCLUDED:

• Transformers for 220, 230 and 240 V Mains
• Outputtransformer
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes (2 x 12AX7, 1 x EL34)
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• FX-Loop
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

Surf at the maximum !

Set of componentes for building the TT Surfmate. Please visit the >>Project page for more infos about the amp.

INCLUDED:

• Transformers (Power and Output)
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate
• REVERB TANK

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.

BFlex - All-Tube Bass Amp Kit
Set of componentes for building the TT BFlex.
Please visit the >>Project page for more infos about the amp.

INCLUDED:

• Transformers (Power and Output)
• Resistors
• Capacitors
• Jacks
• Light
• Wires
• Board
• Switche
• PSU
• Tubes
• Fuses & Fuesholder

NOT INCLUDED:

• Knobs
• Chassis
• Faceplate

To build this project knowledge in electric engeneering, experience with high voltage, and the reading and understanding of schematics and dealing with measurement device is highly recommended .
There is NO step-by-step guide for beginners. The circuit and layout plan includes all relevant information. If you don't understand it than don't build it.