Zed Audio Draconia Instruction & Installation Manual - page 16
The pre-amplifier has 5 inputs, four of them allow the front and rear outputs from a head
unit to mixed to mono. The fifth input does double duty. When the MODE switch is in the
“normal” position the fifth input (mono) accepts a mono input, such as the mono sub outs
from some head units. The sensitivity is 4 times that of each of the individual inputs 1-4 so
that the level range remains the same. When this input is used the user may choose to
use either the low pass crossover in the head unit, in which case turn
Megalith’s low pass
crossover to 240Hz or if
Megalith’s crossover is used, turn the low pass crossover on the
head unit to the highest frequency (This keeps the unused crossover out of the usable
passband - typically up to 100Hz). When the mode switch is in the “Bridge” position, the
fifth input receives signal from the MASTER amplifier when two amps are run in the
bridged configuration. (See Fig 5 on bridging two of our mono blocks)
The high pass crossover functions as a variable subsonic filter with a Butterworth curve at
24dB/octave. Setting this control at the appropriate frequency for the woofer prevents
unwanted cone excursions at frequencies which we cannot hear.
A one band parametric equalizer was incorporated because we feel that it gives the
installer more control than a simple bass control.
The remote port allows the signal level to be varied from the dash area of the vehicle.
Two
Megaliths may be bridged for super high power of up to 4Kw into 2 ohms. (Turn the
level control on the amplifier more sensitive and then use the remote control)
Page 14
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--
REM
POWER CONNECTIONS
--
--
SPEAKER CONNECTIONS
DESIGNED AND ASSEMBLED
IN THE USA by ZED AUDIO
11-14.4 volts DC
1 ohm load min
Battery
Head Unit
L
R
L
R
+
+
LEFT
RIGHT
BRIDGE
+
--
REM
POWER CONNECTIONS
+
--
--
--
SPEAKER CONNECTIONS
DESIGNED AND ASSEMBLED
IN THE USA by ZED AUDIO
11-14.4 volts DC
Min load 2 ohms Stereo
Min load 4 ohms Bridge
3K5
3K5
1K2
1K2
670
670
190
190
85
85
63
63
46
46
HIGH
HIGH
PASS
PASS
LEVEL
LEVEL
BASS
BASS
EQ
EQ
3+4 HP
3+4 HP
3+4 LP
3+4 LP
0.26v
0.26v
8v
8v
0
0
+18
+18
L
L
R
R
LINE
LINE
OUT
OUT
LINE
LINE
LINE INPUTS
LINE INPUTS
1
1
2
2
3
3
4
4
3.5K
3.5K
1.2K
1.2K
670
670
190
190
85
85
63
63
46
46
LOW
LOW
PASS
PASS
LEVEL
LEVEL
0.26v
0.26v
8v
8v
3K5
3K5
1K2
1K2
670
670
190
190
85
85
63
63
46
46
HIGH
HIGH
PASS
PASS
FLAT
FLAT
HP
HP
LP/BP/MIX
LP/BP/MIX
SELECT
SELECT
MIX
MIX
BP
BP
LP
LP
3+4 LP
3+4 LP
HP
HP
FLAT
FLAT
SELECT
SELECT
MODE
MODE
CHANNEL 1+2
CHANNEL 1+2
CHANNEL 3+4
CHANNEL 3+4
+
+
+
+
+
+
----
REM
REM
POWER CONNECTIONS
POWER CONNECTIONS
----
----
SPEAKER CONNECTIONS
SPEAKER CONNECTIONS
DESIGNED & ASSEMBLED
IN THE USA
by ZED AUDIO
DESIGNED & ASSEMBLED
IN THE USA
by ZED AUDIO
+
+
+
+
----
----
Ch1
Ch1
Ch2
Ch2 Ch3
Ch3
Ch4
Ch4
BRIDGE
BRIDGE
+
+
----
11-14.4 volts DC
11-14.4 volts DC
Min load 2 ohms Stereo
Min load 2 ohms Stereo
Min load 4 ohms Bridge
Min load 4 ohms Bridge
BRIDGE
BRIDGE
+
+
----
Min load 2 ohms Stereo
Min load 2 ohms Stereo
Min load 4 ohms Bridge
Min load 4 ohms Bridge
1
2
3
4
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IN
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1
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1
2
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3
5
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2
6
7
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1
2
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1
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3
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3
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Q
Minilith
This amplifier has a little humour attached to it’s name. It is a sort of “
Lith” but of course
much smaller, so what better than to name it as the mini version of
Megalith. With an
output capability of 600w into a 1 ohm load,
Minilith takes it’s place beside it’s larger
sibling.
All the same good technical goodies apply to this small
Lith. It would be pointless to repeat
it all here so just read the technical stuff under
Megalith. Of course this amplifier has less
parts and so the input capacitance totals only 11,000mfd. The circuit accommodates
various types of power supply mosfets. We typically use twelve 17 amp mosfets or six 35
amp versions. In either case we have a large current reserve for total reliability.
The class D amplifier uses six power mosfets each rated at 33 amps (for a total of 99
amps) in a circuit with a maximum current requirement of 24.5 amps.
Minilith uses the identical front end as Megalith so this mini-mite has no disadvantage in
terms of it’s versatility.
Two
Miniliths may be bridged for up to 1.2Kw into a 2 ohm load