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Why ECHIDNA?
ECHIDNA
ECHIDNA
E E E E
xclusive
xclusive
ECHIDNA
ECHIDNA
‐ ‐ ‐ ‐
xclusive
xclusive
The Echidna output stage has no output choke and no Zobel network
stable
stable and the low output impedance is assuring a high damping
stable
stable
response.
This amplifier is able to drive any efficient loudspeaker, thanks to the low distortion and high current
capability. However, it has no protection system
The second harmonics is –40dB, third and forth with linear decay.
Many famous amplifiers have bad response and don't self-oscillate thanks only to a choke in series to the
output and a Zobel network when they drive 0,1uF in parallel to the 8 ohms resistor.
Square wave response at 20 khz and 8 ohms + 3,3uF (3 point 3 micro farad!), 30 Vpp
C C C C
ircuit for
ircuit for
H H H H
ybrid
ybrid
I I I I
mproved
mproved
ircuit for
ircuit for
ybrid
ybrid
mproved
mproved
no output choke and no Zobel network! ! ! ! Despite this, it is unconditionally
no output choke and no Zobel network
no output choke and no Zobel network
no protection system! So it's not protected against short circuits. Warning!
no protection system
no protection system
20 khz distortion before clipping
Square wave response at 20 khz and 8ohms, 34 Vpp
D D D D
esign by
esign by
N N N N
emesis
emesis
A A A A
udio
udio
esign by
esign by
emesis
emesis
udio
udio
high damping of the loudspeaker, for better bass
high damping
high damping
7
unconditionally
unconditionally
unconditionally
M_PA1m REV.01 ENG OCT 2009