Dual Mono; Troubleshooting - Arcam A49 Handbook & Instructions

Dual mono - P49 only
Dual mono requires the use of a power amplifier for
each channel.
We recommend that you use the set
SPEAKER 1 L
of terminals on your P49 power amps for the low
frequencies and the SPEAKER 2 R set of terminals for the
high frequencies.
On one of the P49's, connect the red positive speaker
terminal labelled to the positive terminal
SPEAKER 1 L+ LF
of your right speaker. Similarly, connect the black
negative speaker terminal labelled to the
SPEAKER 1 L-
negative terminal of your right speaker. Repeat this
LF
process for the left speaker, using the terminals labelled
and on the other P49 power amp.
SPEAKER 1 L+ L-
PHONO
GROUND PHONO RECORD
ONLY (MM) CD TUNER SAT BD PVR AV OUT
R
MODE INPUT GAIN
ST/BRIDGE/DM XLR/RCA 25dB/31dB
HF
Remove
MODE INPUT GAIN
Make sure GAIN
LF metal strip
ST/BRIDGE/DM XLR/RCA 25dB/31dB switch is set to 31dB
on both amps
MODE
ST/BRIDGE/DM
PRE PRE PRE IN R PRE IN L
IN OUT
L
TRIGGER IN
MODE INPUT GAIN
TRIGGER OUT
ST/BRIDGE/DM XLR/RCA 25dB/31dB R
R L
MODE INPUT GAIN
ST/BRIDGE/DM XLR/RCA 25dB/31dB
4–16 OHMS. CLASS 2 WIRING P49 4–16 OHMS. CLASS 2 WIRING
SPEAKER 1 SPEAKER 2 SPEAKER 2 SPEAKER 1
MODE INPUT GAIN
ST/BRIDGE/DM XLR/RCA 25dB/31dB
MODE
Make sure MODE
ST/BRIDGE/DM
switch is set to DM
on both amps
A C49 pre-amp and two P49 power amps in dual mono configuration.
On the first P49, connect the red positive speaker Note: PRE IN R has no function in this arrangement.
terminal labelled to the positive
SPEAKER 1 R+ HF
WARNING: the strip of metal on the speakers connecting
terminal of your right speaker. Similarly, connect the
the low frequency (LF) terminals to the high frequency (HF)
black negative speaker terminal labelled to
SPEAKER 1 R-
terminals MUST BE REMOVED. Failure to do so will result
the negative terminal of your speaker. Repeat this
HF in damage to both amplifiers, which will not normally be
process for the left speaker, using the terminals labelled covered under warranty.
and on the second P49.
SPEAKER 1 R+ R-
To allow the power state of the P49 to be controlled by
In this setup only one interconnect is required to each
the A49 please connect the
TRIGGER OUT
power amplifer and it should be connected to the
using a mono 3.5mm jack lead – not supplied.
IN
PRE IN L input. The interconnects can be either XLR
(recommended for longer cable runs) or phono (RCA).
Set the switch on the P49's to the appropriate
INPUT
setting for the cables used.
NOTE: Units can be interconnected via XLR or RCA.
Both versions shown for illustration purposes only.
PRE AUX R AUX L PRE OUT R PRE OUT L TRIGGER OUT
OUT
ACCESSORY
POWER
6V 1A 12V 1.5A
POWER INLET SWITCH POSITIONS
Remove 115 = 110 - 120V~
230 = 220 - 240V~
C49
metal strip
VOLTAGE
110-120V/220-240V ~ 50-60 Hz
350W MAX
PRE PRE PRE IN R PRE IN L
IN OUT
L
TRIGGER IN
MODE INPUT GAIN
TRIGGER OUT
ST/BRIDGE/DM XLR/RCA 25dB/31dB R
R L
POWER INLET
SWITCH POSITIONS
115 = 110 - 120V~
230 = 220 - 240V~
4–16 OHMS. CLASS 2 WIRING P49 4–16 OHMS. CLASS 2 WIRING
SUPPLY
VOLTAGE
SPEAKER 1 SPEAKER 2 SPEAKER 2
110-120V/220-240V ~ 50-60 Hz
350W MAX
Make sure INPUT
MODE INPUT GAIN
switch matches wired
ST/BRIDGE/DM XLR/RCA 25dB/31dB
configuration (XLR or RCA)
on both amps
E-18
MODE INPUT GAIN
ST/BRIDGE/DM XLR/RCA 25dB/31dB

troubleshooting

to the
TRIGGER
L
HF
LF
SUPPLY
POWER INLET
SWITCH POSITIONS
115 = 110 - 120V~
230 = 220 - 240V~
SUPPLY
VOLTAGE
SPEAKER 1
110-120V/220-240V ~ 50-60 Hz
350W MAX
If you are having trouble with your amplifier, check the
following items.
No sound Sound cuts-out unexpectedly
Check the following: If the temperature of the internal heatsink rises above
a safe level, then a thermal cut-out inside the amplifier
The amplifier is switched on.
<
operates to protect the unit and the protection system
The A49/C49 is not muted (i.e. MT (mute) is not
<
temporarily removes power to the speakers. The system
shown on the display panel; the power LED is
will reset itself as the heatsink cools down.
showing green, not orange or red).
< With two pairs of low-impedance speakers
The selected source going in to the A49/C49 is
<
connected (6Ω or less), overloads are more likely.
generating audio (e.g., if CD is selected, then the
Overloading the amplifier may cause it to shut
CD is playing).
down because of overheating.
The speaker outputs on the A49/P49/P349 are
<
Note that, due to the high output voltage from
<
active and the appropriate speaker LED is showing
some CD players, it is possible to drive your
green.
amplifier at full power even though the volume is
not set at maximum.
E-19
No remote control
Check the following:
Check the remote control with fresh batteries.
<
< Ensure that the amplifier and remote are both set to
the same control code - see page 17.
< If the volume does not operate for a selected input,
check that processor mode has not been selected for
that input - see page 12.