Connecting the Belles 350A Reference Monoblock
IMPORTANT: In order to eliminate potential damage to other components, always unplug
the amplifier(s) before unplugging or plugging in the preamplifier or sound processor
power cord or the interconnect cables running from the preamplifier to the amplifier.
When plugging in or unplugging interconnect cables running from the source to the pream-
plifier or sound processor, always make sure that the preamplifier/sound processor volume
control is set at zero.
1. Before doing anything, be sure that the power switch on the amplifier’s front panel is in
the off position. Please do not turn the amplifier on until directed to do so.
2. Assign one monoblock to the left channel, and one to the right channel.
3. Connect the balanced cable to the left monoblock balanced mono input. Repeat the
same for the right monoblock.
4. Connect the left speaker cable positive (red wire) terminal to the left monoblock right red
speaker binding post.
5. Connect the left speaker cable negative (black wire) terminal to the left monoblock left
red speaker binding post. There should be no connections to either black binding post.
6. Connect the right speaker cable positive (red wire) terminal to the right monoblock right
red speaker binding post.
7. Connect the right speaker cable negative (black wire) terminal to the right monoblock
left red speaker binding post. There should be no connections to either black binding post.
8. Connect the power cords to each amplifier.
9. Power on the system using the following order: sources (such as CD player, tuners,
etc), preamplifer, monoblocks. Use the reverse order to power off the system.
NOTE
: The balanced mono input connector is wired as follows:
1. The positive phase signal connets to pin 2 of the XLR connector and drives the amplifier
right channel.
2. The negative phase signal connets to pin 3 of the XLR connector and drives the amplifi-
er left channel.
3. The signal common is pin 1of the XLR connector.
Preparation and Checkout
Like any high performance, audiophile quality component, the Belles 350A Reference
requires about 250 hours of circuit forming (burn-in) time before a realistic evaluation of its
capabilities can take place. We recommend that you run the white noise from an FM tuner
into your system, with the speakers connected, at low volume, as one method of ‘forming’
the components and signal pathways of your amplifier. An alternative method involves
playing music from a CD source, with the CD player set on ‘repeat.’
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