McIntosh How to Operate the PS112 in Home Theater, Level Control, Bass Enhance, Sub Frequency

How to Operate the PS112 in Home Theater

How to Operate the PS112 in Home Theater

Level Control

Start with the LEVEL CONTROL in the center position and perform the system level calibration on the A/V Con- trol Center or Surround Decoder for the subwoofer level. If the subwoofer level can not be set, adjust the PS112’s LEVEL CONTROL to provide adequate range during cali- bration.

Bass Enhance

Set the BASS ENHANCE Switch to VIDEO to add a low frequency bass boost to enhance the impact of low fre- quency sound effects.

Sub Frequency

When the PS112 is used with a discrete Sub Out from a Home Theater Control Center, the SUB FREQUENCY Control should be set to OUT, as the signal should contain only low frequency information.

Hi-Pass Frequency

When the PS112 is used with a discrete Sub Out from a Home Theater Control Center, the HI-PASS FREQUENCY Control is not used.

Phase

The PHASE Switch sets the acoustic output phase of the PS112 to either 0 or 180 degrees relative to its input. This switch is to help avoid phase cancellation (characterized by a loss of bass information) between the PS112 and any other low frequency producing speaker in the system. Careful listening with this circuit switched to 0 and then listening with it switched to 180 will help you determine if this effect will be beneficial to the system. Set the switch to the desired bass.

Power

When the POWER SWITCH is set to the OFF position, the PS112 can not be turned on by a Remote Power Conrol in- put or audio input signal sensing.

Remote Power Control

The turn-on method uses a turn-on signal from a McIntosh Control Center or Preamplifier. When a Power Control Cable is connected between the Control Center or Pream- plifier and the PS112, the signal-sensing circuit is disabled and the PS112 will always be on whenever the Control Center or Preamplifier is on. The PS112 also has a Power Control OUTput jack for triggering additional subwoofers or other McIntosh component(s).

The PS112 utilizes signal-sensing circuitry for its turn- on method. In this mode, the PS112 turns on when a music signal is detected at the Line INput(s). A time delay of thirty minutes is incorporated in the circuit to prevent the PS112 from turning off during a music or movie passage where there is little low frequency activity. This turn-on method is beneficial when running an additional Power Control Cable is not feasible.

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