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Alpha 1 MOhm linear

Description

Panel Mount Potentiometer

Sicherheitsinformation

Safety Information for Electrical Components, Especially for Tube Amplifiers

For all electrical, electromechanical, and mechanical components, the specifications and operating parameters defined by the respective type standards generally apply.
Further information, where available, can be found in the respective data sheets and product descriptions included with the product.

General Information

NOT SUITABLE FOR CHILDREN – choking hazard due to small parts
NOT SUITABLE FOR UNTRAINED PERSONS – danger to life due to high voltages
The safety and processing requirements applicable to the component must be observed
CE conformity applies only when installed professionally
Warranty becomes void in case of improper handling
The operator is responsible for proper installation
Local regulations and VDE provisions must be complied with
Never exceed the rated power
Never exceed the rated voltages and currents

Required Expertise

Use of measuring instruments (multimeter, oscilloscope) and evaluation of measurement results
Safe handling of high voltages (up to 500V and more)
Reading and understanding circuit diagrams
Selection of appropriate tools
Knowledge of electrical components and their characteristics
First-aid knowledge for electrical accidents
Knowledge of VDE regulations and safety requirements

Specific Safety Instructions by Component Groups

Amplifier Tubes

Hazard due to high voltages
Hazard due to very high heat generation
Hazard due to glass breakage
Hazard due to UV radiation in case of defective tubes

Transformers & Chokes
For qualified personnel only! Installation and removal of power transformers, chokes, output transformers, and switching power supplies may only be carried out by qualified specialists.

Hazard due to high voltages
Risk of electric shock
Hazard due to heavy weight
Risk of injury
Fire hazard in case of overload

Capacitors

Explosion hazard if electrolytic capacitors are connected with incorrect polarity
Never exceed the rated operating voltage
Hazard due to high voltages
Risk of electric shock
Capacitors can store voltage for hours

Resistors

Hazard due to high heat generation
Hazard due to high voltages
Fire hazard in case of overload
Hazard due to hot surfaces
Risk of burns

Fuses

Replace only with identical ratings
Never bypass or "repair" a fuse
Identify the cause of fuse failure before replacement
Fire hazard when using incorrect fuse ratings

Relays & Switches

Hazard due to switching sparks
Contact damage in case of overload
Fire hazard due to defective contacts

Potentiometers & Rotary Switches

Hazard due to high voltages at the contacts
Fire hazard in case of overload
Mechanical damage may lead to short circuits

Diodes & Rectifiers

Hazard due to high voltages
Heat generation
Risk of burns
Observe correct polarity
Malfunction in case of incorrect polarity
Heat sinks required for power diodes

Sockets, Connectors & Cables

Hazard due to high voltages
Check insulation for damage
Ensure proper strain relief
Fire hazard due to undersized cables
Touch protection required for high-voltage connectors

Heat Sinks & Fans

Risk of burns due to hot surfaces
Risk of mechanical injury from moving fans
Electrical hazard in case of defective fan motors

Circuit Boards & Turret/Lug Terminals

Hazard due to sharp edges
Fire hazard during soldering
Hazard due to solder fumes
Adequate ventilation required
Observe ESD protection

Housing Parts & Mounting Hardware

Risk of injury due to sharp edges
Electrical safety must be ensured
Observe proper grounding
Provide adequate ventilation openings
Ensure protection against contact with live parts

Measuring Instruments & Indicators

Hazard due to high voltages in analog instruments
Fragile glass front
Risk of injury

Documents

Alpha 24mm RV Series (637.95 KB)

Manufacturer

EU-Wirtschaftsakteur | EU Economic Operator
Tube-Town GmbH, Rumbergring 37, 66969 Lemberg, Germany, info@tube-town.de

Customer reviews

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The LNDVerb kit is based on a classic Fender reverb circuit, but uses LND 150 Mosfets instead of tubes. These can be operated at voltages as high as 500 V, to get as close as possible to the characteristics of real tubes.

The kit can be integrated into an existing amplifier or can be build as standalone unit like the Fender tube reverb.

The unit needs less than 10 mA current, so a VPump for example can be used as power supply in a standalone build. If it gets integrated into an existing amplifier the already present power supply of the amp can be used to supply the needed voltage for the unit without the need to upgrade the power transformer.

A reverb transformer of the type 125A20B or similar and a reverb tank are necessary to operate the LNDVerb. These are both not included in the kit.

The needed RCA phone sockets and potentiometers are included in the kit.

Further informations and examples of the finished unit can be found in the PDF below.

Matching parts are linked below and can be ordered with the unit if needed.

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Datasheet

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Active, serial FX-Loop for a subsequent installation in an existing tube amplifier
The FX-Loop works with two LND150 in the send and in the return stage. The send and return level can be adjusted to their optimal value with two potentiometers. The Loop works with the present high voltage of the amplifier.
It has two inputs for low and high signal levels.

Input Levels:
InA: 30 - 60 Vpp, max. 65 Vpp
InB: 10 - 15 Vpp, max. 18 Vpp

The FX-Loop utilize POTENTIALLY FATAL HIGH VOLTAGES.
Seek help from a competent technician if you are in any way unfamiliar with high voltage circuits.
Use at your own risk.

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Documentation

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