22
Overload
(Footnote 3)
Recovery from hard overload at 20 kHz into
4 ohms is 1
µ
s.
Protection
The amplifier protection:
•
is short-circuit proof
•
has over current limiting
•
will cut out if a continuous D.C. offset
appears on output
•
will cut out if output current exceeds 12A
average continuously over a period of a
few minutes
•
will cut out if temperature is excessive
•
is protected against most input overloads
The power supply protection:
•
will cut out if most common faults are
detected in the power supply (such as
over-voltage, master clock at incorrect
frequency, excessive temperatures)
•
is protected against most mains
transients
Components
(Footnote 4)
For reliability, all semiconductors are at least
industrial grade in both the power supply and
amplifier. All electrolytics are rated to 105
°
C in
both the amplifier and power supply.
•
only highly linear resistors and MKP10/
FKP1 capacitors are employed in the
critical audio path
•
six-layer PCBs are used in the power
amplifier to minimize stray magnetic fields
and to accurately define voltages
•
four-layer PCBs are used in the power
supply to minimize E.M.I. and voltage
transients, which improves reliability and
power efficiency
Compartments
There are four heavily shielded compartments:
•
a power supply unit
•
an input amplifier section
•
a power amplifier compartment
•
an output filter compartment
