Inovonics AARON 650, Installation & User Manual

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ditions. Another option is to roll-off the higher audio frequen-
cies as the incoming signal deteriorates.
The AARON 650 analyzes three independent properties of the
incoming carrier to control the amount of L/R broadband
blending, high frequency blending, and top-end program audio
rolloff.
The effect these properties have on stereo blending or HF
rolloff can either be ‘automatic,’ or placed entirely under user
control.
Stereo Blend
From the Reception Tools menu, enter the setup menu for the
Stereo Blend
function.
The factory-default setting is
Auto
. The bargraph and
numerical readout above this
selection shows the amount
of stereo blending in effect,
whether the function is automatic or under user control. Note
that the three other setup options ar e grayed-out. Push the
knob again to uncheck the
Auto
box and to gain user control
over these adjustments.
Blending (ultimate to mono) may be based on
RSSI (incoming
signal strength), on USN (ultrasonic noise) or Mpath (multi-
path effects). Bargraphs and numerical readouts give a realtime
measurement of these criteria.
Turn the knob to scroll through the setup options. You can
bracket signal property callouts and push the knob to activate
any or all. You may also bracket the bargraph above each
property to set the threshold where that property will begin to
effect noise and stereo separation.
RSSI is a ‘good’ quality, so blending begins as the indicated
signal strength dips below the threshold value.
USN
and
Mpath
are ‘bad’ qualities, and blending will begin as these pa-
rameters climb above their thresholds. Blending will be pro-
portional to the property’s value relative to the threshold you
dial-in.
You will need to experiment with these settings as there are no
hard-and-fast rules for their adjustment. Every signal reception
scenario is a bit different, so listen for the effects of these Re-
ception Tools. You may use the headphone jack in this case,
but remember: these tools only work in the Stereo-Regen mode
of operation.
High Blend
The High Blend setup menu is identical to the Stereo Blend menu
just discussed, and the very same setup criteria and notes ap-
ply. The difference here is that only the higher audio frequen-
cies are progressively blended toward mono, the idea being,
“why blend everything to mono when most of the noise is high-
end hiss?” Whether you use
Stereo Blend
,
High Blend
or a combi-