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See how far you can take the volume control before the signal begins to clip (you may need to reduce the amp gain if
it gets too loud). If you see it clip on the scope, back off the volume control a little. Now increase the gain on the amp
until you find the highest level before distortion or visible clipping. Bear in mind that the maximum level may be limited
by your speakers - don't over-drive them.
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Low-Pass & High-Pass Filters
LTO
LTO
TM
Installation & Setup Instructions
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You are able to select either a low-pass or high-pass filter, or switch all filters out (FLAT position). Both filters have a cut
-off point that is variable from 50Hz to 500Hz.
When selecting the Low-Pass (LP) filter, the level of frequencies ABOVE the selected cut-off point will be reduced at
the rate of 12dB per octave. This is typically used to prevent woofers from attempting to reproduce mid and upper
frequencies.
When selecting the High-Pass (HP) filter, the level of frequencies BELOW the selected cut-off point will be reduced at
the rate of 12dB per octave. This is used to prevent low frequencies from being delivered to midrange drivers, which
could damage the speaker.
When in the FLAT position, the full audio band is allowed to pass and the setting of the variable FREQ control has no
effect.
Bridged Mode
Your ADP amplifier has been designed to be used in stereo 2-channel mode only, driving into a nominal impedance load
of 4 ohms per channel (minimum). Dedicated high power mono models are available in the ADP range and we do not
recommend that you drive your stereo model in bridged mono (single channel) mode, or in tri-mode. However, it is possi-
ble to operate your stereo amplifier in bridged mono mode as long as the overall speaker load is no less than 8 ohms.
Typically this would be achieved by wiring two 4 ohm speakers in series.
If you attempt to drive into an impedance load that is too low, the amplifier will cut into its protection mode. This is a de-
signed reaction to safeguard the amplifier and does not indicate a fault with the product.