Owner's Manual

10
12V Position (Automatic on/off)
When the Turn On Options switch is set to its 12V position, the A 52+ is turned on and off only
with an external +9 V to + 12 V voltage from your surround processor, preamp or AV Receiver.
When the external voltage ceases the A 52+ will turn off immediately. The Turn On Options
switch 12V position disables the front panel On-Off button.
12 Volt Jacks
12V In Jack
The A 52+ 12V input uses a 3.5mm jack (mono). To use the 12V trigger, insert the trigger wire
plug into this jack and the plug at the wire’s other end into the surround processor or AV
receiver’s 12V output jack. For your convenience we have included a 12V trigger wire with mono
3.5mm plugs at both ends.
Note: If the controller’s 12V trigger output is a + and – terminal, you can cut the 3.5mm
plug off one end of the included trigger wire and attach the bare wires to these terminals.
The lead with the white stripe on it corresponds to the plug’s tip and the unmarked lead
corresponds to the sleeve of the plug. The trigger plug tip is + (positive) and its sleeve –
(negative).
Note: The A 52+ 12V trigger circuit draws a negligible 5 mA. The total load on your
triggering device’s output is the sum of the trigger current drawn by each of the
components you’ve looped together. Check the maximum capacity of your surround
processor, AV receiver or home controller’s trigger outputs so you do not overload them
by connecting too many power amplifiers. Typical triggering devices are rated to handle
50mA to 100mA.a
12V Loop Out Jack
The Trigger Out jack lets you loop or “daisy-chain” the incoming trigger voltage to an additional
A 52+ or other component(s).
3.5mm vs. 2.5mm jacks
Some other Parasound power amplifiers and preamplifiers might use a 2.5mm “sub-mini”
trigger jack. To use the A 52+ trigger with products that use a 2.5mm jack you will need an
3.5mm to 2.5mm mono adapter for one of the plugs on the included trigger wire.
AC Power Cord
The AC cord supplied with your Halo Integrated is a high quality IEC type cord. Please connect it
directly to an AC wall outlet or power conditioner that is always “live.” If possible, plug your A 52+
into the same AC outlet that your surround processor or AV receiver is plugged into. If different
AC outlets are used for the A 52+ and other components, including the TV or video projector, the
ground potential may be higher or lower between the outlets, resulting in audible hum.