Audio Design Associates Cinema Reference Mach II PTM-8150 User Manual
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MONO ENH - Mono Enhance is a proprietary ADA Mode that is applied to a mono signal and is useful
for playback of source material with no stereo separation. There are two adjustments that can
be made to the Mono Enhance mode, Effect Delay and Effect Level. In this mode, the two
channels are first mixed mono together, then the mono enhancement feature is applied, with
the delay set to the left channel (after mixing down to mono) and prior to the Pro Logic decod-
ing. This permits the Mono Enhance mode to deliver surround sound with depth and feel, even
though the input signal is mono and during standard Dolby Pro Logic playback, would only
provide audio out of the center channel. The Effect Level can best be described as the throttle
for the decoding circuit. The Effect Level has a range from -20dB to +20dB. At +20dB, the
Mono Enhance mode has its effect set to maximum where at -20dB, the effect is least present.
You can sample changes to the Effect Delay and the Effect level as they are being made.
Here, the L, C, R, SUB, LS, and RS Output channel lamps are on.
To alter the Effect Delay and Level for Mono Enhance:
1
Select an Input label that is playing a mono signal and press the Input knob. (You will want to
be listening to a source component as you make the following changes).
2
Turn the Mode knob until the display’s second line reads MONO ENH and press the Mode
knob.
3
Turn the Mode knob clockwise until the display’s second line reads SETUP MENU and press
the Mode knob.
4
Turn the Mode knob so that the display’s second line reads MONO ENHANCE and press the
Mode knob.
5
The second line of the display will now read LEVEL. To alter the Effect Level settings, press
the Mode knob. To alter the Effect Delay setting skip to Step 7. To completely exit the setup
menu, turn the Volume knob.
6
Turn the Mode knob to set the Effect Level between -20dB to +20dB. Then press the Mode
knob.
7
Turn the Mode knob one click so that the display’s second line now reads DELAY and press
the Mode knob.
8
Turn the Mode knob to set the Effect Delay between 0ms and 20ms.Then press the Mode
knob.
9
To continue with other setup menu options, turn the Mode knob clockwise until the display’s
second line reads BACK TO MAIN and press the Mode knob. To completely exit the setup
menu, turn any knob other than the Mode knob.