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To correctly set the gain control of the amplier to match that of the source (headunit) use the
following setup routine:
• Turn the gain control to minimum on the amplier.
• Ensure the bass boost is set to 0 dB.
• Set all crossovers on the headunt ( if applicable) to at and both bass and treble to zero.
• Turn up the source (headunit) to approx 3/4 volume.
• Very slowly turn up the gain on the amplier until distortion can be heard in any of the
speakers or until the volume reaches an uncomfortable listening level when this is reached turn
the gain control down slightly.
The gain control is now set.
The setting of the crossover will depend on what kind of speaker you are installing.
For a subwoofer it is recommended that the crossover is set to low pass and the frequency is
set to match that of the speakers specications, or your preferred frequency - this is usually
around 60 - 120 Hz
For a pair of full range speakers it is recommended that the crossover is set to at (I.e. that the HPF
and LPF lters are set to off).
The two frequency controls will then have no effect on the ampliers output and the speaker will
receive a full range signal.
Using the high pass crossovers will allow more control of your speakers by removing the bass
(low frequencies). The speakers can now perform at higher volumes with less distortion.
Note: The smaller the speaker, the less bass it can handle.
Adjust the crossover to get the most and best sound from your speakers, the easiest way to do this is
by limiting the amount of bass you pass to them.
For a pair of speakers with a passive crossover it is recommended that the crossover is set to high
pass and the frequency is set to match that of the speakers specications.
Note: By using the crossovers correctly you will not only lengthen the life of your speakers but you will
also get better performance from them.
To optimise your setup seek the advise of a professional installation engineer or visit your local VIBE
audio dealer.
Set Up Section
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