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Mono Operation
We recommend an 8 Ω minimum speaker load for bridged mono operation. In mono the Zamp
v.3 “bridges” the R channel to amplify only the positive half of the audio signal and the L chan-
nel to amplify only the negative half of the audio signal. In effect, each channel “sees” only half
of the speaker’s rated impedance, so that an 8 Ω speaker in mono is only a 4 Ω load and a 4 Ω
speaker in mono is a punishing 2 Ω load.
Note: Do not attach a mono speaker load that is less than 4 Ω to avoid overloading and over-
heating the Zamp v.3.
Mono Input and Speaker Connections
1. Turn the unit off and remove the AC cord.
2. Connect the single cable from the preamp or controller to the R channel audio In jack.
3. Set the Mono-ST (stereo) switch to its Mono position.
4. Connect the positive lead of the speaker wire to the red R + channel speaker terminal.
5. Connect the negative lead of the speaker wire to the red L + channel speaker terminal.
Note: The R + and L + terminals are spaced too far apart to accept a dual-banana plug.
6. Do not connect anything to either channel’s – speaker terminal.
7. Reconnect the AC cord.
Automatic Turn On Options
For convenience, there are two ways the Zamp v.3 can be triggered to turn on automatically.
- When a suitable voltage is applied to its 12V In (input) jack.
- When an audio signal is present at the L and R audio IN (input) jacks.
When automatic turn on is selected the Zamp v.3 front panel Power button is disabled so that
on/off is determined solely by the triggering preamp or controller.
12V Position
When the Auto On switch is set to the right in its 12V position, the Zamp v.3 is turned on and off
with an external +9 V to + 12 V voltage from your controller. When the external voltage ceases the
Zamp v.3 will turn off immediately. The 12V switch position disables the front panel Power button.
Man (Manual) Position
When the Auto On switch is in its middle MAN (manual) position, the auto turn on function is
disabled and the Zamp v.3 must be turned on and off manually with the Power button on its
front panel.
Audio Position
When the Auto On switch is set to the left in its Audio position, the Zamp v.3 will be turned on
whenever an audio signal is present at its Left and Right Input jacks. After audio signals cease,
the Zamp v.3 will remain turned on for about ten minutes. This prevents it from shutting down
during pauses in the music. The Audio position of the Auto On switch also disables the front
panel Power button.
AC Voltage Selector On Bottom
In Out
Zamp V.3 Zone Amplifier
Parasound Products, Inc.
San Francisco, CA USA
L-
L+
R-
R+
R
L
In
Zamp v.3
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.
11 5 V
/230V
60Hz
/50Hz
5W
3A
Fuse
Only
Auto On
ManAudio
Sens
Use
R
In
12V
LevelRL
Gnd Lift
Loop
Loop
Mono St
REAR PANEL CONNECTIONS AND CONTROLS continued
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