Speaker adjustment – ADAM Audio Beta Semi-active Version Benutzerhandbuch

Seite 13

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13

Tensor Beta (Semi-active Version) Manual

/ english

6.3

Impedance linearization (for tube amplifiers)

The semi-active Tensor Beta was designed for you to be able
to use your own amplifier at bass-midrange, midrange and
high frequencies. Usually, this will be a transistor amplifier
that does not have any problems with the vacillating
impedance characteristics due to its low internal resistance.

With the output of a tube amplifier however, the situation is different. The sound
quality can be improved if the amp gets an impedance of 4 Ω or 8 Ω that stays
the same at all frequencies. That is why the semi-active Tensors feature built-in
impedance linearization that can be patched into the signal path.

6.4

Tweeter Level

In addition, the ‘Tweeter Level’ allows to either raise or lower
the high frequency level by 1,5 dB. Just insert the short
circuit plug in the accordant position: -1,5 dB to lower and
+1,5 dB to raise the high frequency level.

6.5

Parametric Bass Equalizer

The acoustic properties of specific rooms may cause problems
with authentic reproduction of music (see 5.1). Frequently the
bass is the ‘problem child’ in the attempt to create a natural
sound, producing a ‘standing wave’ – the overlapping of two
waves of the same frequency and phase spreading in opposite
directions. This results in local (at specific positions in a room)
imbalances of particular frequencies.

For example, in a room of 6 meters (20 feet) width and length,
a standing wave typically occurs at approximately 28 Hz, mea-
ning that this tone sounds overemphasized and droning. Using
the parametric equalizer properly, a bass ‘overkill’ like this can
effectively be neutralized.

Furthermore, specific listening habits or preferences may lead
you to want to change the lower frequencies to either emphasize
or attenuate the bass. The parametric equalizer is the perfect
tool for this as well.

6. Speaker Adjustment

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