PLINIUS REFERENCE A-150
15
Product Features
ERROR DETECTION
The Plinius Reference A-150 power amplifier has in-built error detection. This will function
under the following conditions:
•
When the amplifier is overdriven/clipped
•
If any internal fuse is damaged.
Should either of these circumstances arise the amplifier will disconnect both channels and
mute the input. When error detection is triggered the mute and Class A LEDs will turn off
and the power LED will flash. The internal error LED (located towards the front of the circuit
board in the top cavity of the amplifier) will also light. This condition will remain until the
cause of the error is resolved or the amplifier is switched off.
FUSE PROTECTION
When any internal fuse is damaged one or more fuse warning LEDs will light. These LEDs
are under the amplifier lid located to the front right of the main circuit board. If any of the
internal fuse LEDs are glowing ensure that your amplifier is switched OFF and disconnected
from the mains supply for at least 30 minutes. The base of the amplifier will need to be
removed and the fuses located. The rail fuses are near the middle of the circuit board.
Replace them with the same type only.
IMPORTANT: DO NOT FIT A FUSE WITH A HIGHER RATING.
NOTE: Fuse failure may indicate a severe problem. Check all speakers and speaker cables for
damage etc. Should the amplifier continue to exhibit rail fuse failure, contact your Plinius
dealer.
ECOLOGIC CONTROL
The Plinius Reference A-150 is also fitted with a microprocessor which monitors and performs
the Bias and Mute functions. It is programmed to switch the amplifier back into Class AB if
no signal has been present at the input for a predetermined time. This time can be adjusted
to Off, 15, 30 or 60 minutes. During the last minute without signal the bias LED will pulse to
indicate the unit is about to return to Class AB. The purpose of this function is to prevent the
amplifier being left in Class A while unattended for a long period of time.
Before adjusting this time constant, ensure that your amplifier is switched OFF and
disconnected from the mains supply. Remove the amplifier lid and locate the small jumper
JP1 on the main circuit board at the front left. Adjustments are then made by shifting the
jumper to the appropriately labelled pins. The factory setting is 30 minutes.
ADJUSTABLE FEET
The feet at the base of the unit are a two-piece design with an integral thread that allows
the height of the unit to be adjusted up from the platform it sits on. You may wish to
increase this distance to clear brackets or shelving details, or to improve ventilation under
the unit.
