ULTRA-SHORT SIGNAL PATH :
NO-WIRE DESIGN
A prominent audio designer once described an amplifier as "A straight piece
of wire with gain". We take this further by featuring the
shortest
possible
signal path in a commercial amplifier. We do not use wire in any of our signal
paths and every component is directly soldered to one large printed circuit
board.
From input to output, the signal passes through no more than 150mm of P.C.
track. The transformer is connected with only 40mm of wiring to the PC
board. This is only possible with our unique construction which features the
complete amplifier (including filtering capacitors) is
assembled onto one single rectangular Printed Circuit Board where the four
sides connect directly to the inputs and outputs, power transistors on their
heat sinks and power transformer.
The audio signal passes through ONLY ONE TYPE OF WIRE which is the high
speed, wave controlled oxygen free copper of our PC board.
HIGH SPEED POWER SUPPLIES
Every power amplifier uses a large, high-current power transformer which
feeds a 'high-current' bridge rectifier to convert the AC from the transformer
into DC voltages which are then mains ripple filtered using massive, comput-
er grade capacitors.
The rectifier bridge that is normally used is relatively large, handles high
current and low voltage which slow switching speed because of its inherent
high internal capacitance.
It has a response time measured in milliseconds which if converted to fre-
quency would mean that it would have a frequency response from DC to
around 100Hz .
K O S T A S
M E T A X A S D E S I G N
D e s i g n P h i l o s o p h y
06
Frequencies above 1 kHz would be unable to draw
current instantaneously from the power transformer and would need to
rely on the charge stored in the power supply filtering capacitors.
We replace this slow DC rectifier with ultra high speed diodes wired in
parallel with switching times in 'nanoseconds' which when converted to
audio frequencies have a frequency response from DC-10 MegaHertz.
High and low frequency currents can be drawn from the power supply
more effortlessly .
D e s i g n P h i l o s o p h y
Summary of Contents for Marquis
Page 1: ...K O S T A S M E T A X A S D E S I G N Marquis K O S T A S M E T A X A S D E S I G N ...
Page 17: ...K O S T A S M E T A X A S D E S I G N Contr ols Featur es 15 ...
Page 19: ...K O S T A S M E T A X A S D E S I G N Maintenance 17 ...
Page 22: ...K O S T A S M E T A X A S D E S I G N Design Philosophy 20 ...
