Installation manual

LEVIATHAN
We are proud to introduce the second generation of the LEVIATHAN amplifier. The
previous generation LEVIATHAN proved that there is a need for multi channel amplifiers
(>4 channels) in the mobile market. Several improvements have been incorporated into
the new amplifier.
1) Channels 5+6 have an expanded high pass crossover frequency range of 11Hz to
105Hz which will now enable LEVIATHAN to be part of a 4 way system. Channels 1+2 will
supply the tweeters- typically 3 to 4KHz and above, 3+4 the upper midrange - typically
200Hz to 3/4KHz and channels 5+6 will supply the lower mids from about 40-100Hz to
200Hz.
2) Channels 1+2 and 3+4 have had their crossover ranges extended to 55Hz for both low
and high pass.
3) A next generation of power supply design is used with improvements in the areas of
regulation and noise.
4) The pre amplifiers now employ an audiophile chip from National Semiconductor and we
feel that these are superior to the Burr Brown chips used previously. The Burr Browns are
outstanding chips in their own right but are now showing their age.
5) The class D amplifiers now operate at a higher carrier frequency (Between 400 and
500KHz) owing to the fact that we now use a new power MOSFET which has very low
gate charge and is also rated at 50 amps. These MOSFETs have an on resistance which
is one third that of the previous generation so the losses (= heat) are greatly reduced.
LEVIATHAN can perform in many roles. We shall now go through these permutations and
see how they all stack up.
1) Run all six channels in FLAT mode. This will enable you to use an outboard processor
of your choice including our upcoming full tube electronic crossover.
2) Run all channels in flat mode and bridge any or all of the 3 pairs of channels.
3) Run channels 1+2 in high pass independently of the other channels
4) Run channels 3+4 in high, low or band pass independently of the other channels. There
are two crossovers available on channels 3+4 and switching the high and low pass to be
in cascade allows for a band pass mode.
5) Run channels 5+6 in low pass mode using the dedicated RCA inputs.
6) Run channels 5+6 in low pass mode using the summed inputs of channels 1-4. The
signal is now MONO and this mono signal is routed to the main channel 5+6 amplifiers.
7) Channels 1+2 can be switched to receive the mono low pass signal from channels 5+6
8) Channels 3+4 can be switched to receive the mono low pass signal from channels 5+6
9) For a tri-amplified system, channels 1+2 are run high pass, channels 3+4 bandpass
and channels 5+6 low pass.
10) All six channels can be run mono low pass for those systems where there are many
single woofers.
LEVIATHAN
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