Owner’s Enjoyment Manual
Master Volume Control
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On the other hand if you have your volume control cranked
up and on quiet songs, you hear almost ZERO background
noise, that is considered a HIGH signal-to-noise level. Most
serious sound-off competitors have high signal-to-noise
ratios (at least the ones that win do).
Gain Map
Figure 3 - Using the MVC volume control for optimum signal voltage
versus using just the volume control on the head unit.
With this particular system, the only problem you have
to deal with is the source unit’s volume control. When the
volume control is raised and lowered, the signal voltage is
going to rise and fall also, still minimizing the system’s
potential.
What About High Voltage Head Units?
Many car audio head unit manufacturers are starting to
pull their heads out (a little pun) and realizing that they
should provide head units with higher signal voltage on the
outputs. Not only will this increase a system’s S/N, but it will
also allow you to drive your amplifiers better. Unfortunately,
like any source unit, it has a level or volume control that
raises the signal level up and down. We are back to
square one!
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