Here are some questions and observations regarding analog
recording on the JE520. Does anyone know what tradeoffs
are involved in using the analog input level adjustment on the
setup menu?
I don't think there's any way on the JE520 to adjust the
input level to the A/D converter, so it would seem that
one looses resolution when a low-level signal is applied
and boosted with the adjustment in the setup menu.
OTOH, the converter may be overloaded when a
high-level signal is reduced with the setup menu level
adjustment.
My experience to date is that it is best to adjust the input
level with an external pot so that the setup level adjustment
can be left at 0.0. Using the setup menu to boost the level
doesn't seem to leave many sonic artifacts, but I haven't
tried "difficult" material (like low level solo piano). Using the
setup menu to cut the level seems to be the kiss of death,
because I think that the A/D gets overloaded.
Given that one usually likes to maximize the level on the disc
to make the best use of the available disc (is this indeed true
with ATRAC encoding?), does it make sense to ever adjust
the record level setup to less than 0?
Does anyone know exactly where in the digital signal path
the record level setting is applied? A flow chart, showing
the order of processing steps along with word length (# bits)
and sample rate (1x, 2x, etc) would be very helpful...
Unless I hear a reason not to do so, I'll continue to leave the
setup level adjustment at 0.0 and make the adjustment with
an external pot.
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