Ashdown 12-BAND 600 Руководство пользователя - Страница 6

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ASHDOWN ENGINEERING - 12-BAND 600

USER GUIDE

frequencies as low as 30 and 40Hz with any degree of efficiency. N.B. Boosting at

30Hz for instance will not add to the perceived amount of bottom end in the sound,

it will only make your speakers flap to no useful effect. In fact boosting at 100Hz or

180Hz will have the apparent effect of adding far more bottom end than boosting at

30, 40 or even 60Hz.

3. Do not use excessive top (10 to 15kHz) boost, this will add mostly hiss to the

sound as there is very little signal output at this frequency from a bass.

The 30Hz slider has been provided to allow precise tailoring at very low frequencies.

This slider should be used to CUT (not Boost) the 30Hz to a level that allows the

speaker system to work at its maximum efficiency.

USEFUL OBSERVATIONS

The fundamental frequency range of a regular, four string bass guitar is from 41.2Hz

(bottom E string) to around 392Hz (two octaves up on the G string) – not a very

wide range. Obviously a lot of harmonics are produced when playing and these can

extend up to 5kHz and more.

The attack portion of the note also produces other high frequencies when the string

is first struck. This attack can be emphasised by boosting the top end. However

because of the fairly small range of frequencies from a bass, by top end we mean

between 2.6kHz and 5kHz. You will find that by boosting at 5kHz the attack will be

emphasised whereas by boosting at 1.3 and 2.6kHz you will bring out the harmonics

in the note.