Van De Leur 402 Specifications download pdf (Page 9)

Manual Van de Leur Audio 402

Appendix manual 402

Adjustable Damping Factor (dealer only)

The amplifier is equipped with an adjustable damping factor. This circuit is used to lower the

damping factor and hereby adjusting the amplifier to the attached loudspeakers. The result is

often experienced more musical, or ‘tube’ like.

Dealers and professionals are allowed to adjust the circuit to adapt the amplifier to the

desired needs. The circuit board on the rear panel is where the adjustment can be achieved.

The switch on the board switches between normal settings and low settings. The amplifier

has been standardly set to low.

To switch the amplifier to regular settings, switch it to normal. The adjustment will be passed-

by.

The amount of damping applied, can be adjusted by switching soldered resistors. Switch the

resistors on both (left and right) circuit boards for a wanted value according to the table

below. The resistor is indicated as ‘Adjust DF’ and is located on the top of the print. The

resistor is raised above the print, for easy replacement.

Ask your dealer or contact Van de Leur Audio for advise on customizing the damping factor.

Resistor values put next to the achieved damping factor:

Resistor

Damping factor (relative)

4k7 (standard)

0.5

10k

22k

39k

Note: the lower the damping factor, the bigger the change between normal and low setting.

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Van De Leur 402 Specifications Page 9