Wire routing is CRITICAL for NOISE FREE PERFORMANCE. Observe the following:
1. Always use high quality RCA type shielded cables.
2. Always use the shortest length possible. If the cable is too long.
make an “S” type loop(not a coiled loop) in the center of the
cable to take up any excess.
3. Never cut the shielded cable and re-splice it.
4. Never route any Amplifier input cables near or parallel to
speaker outputs, high energy ignition wires, or near computer
controlled ignition circuit units(Computer units may be found
behind or under the dash panel in late model cars).
This GREEN LED will illuminate when the amplifier is turned “ON”. If it fails to
illuminate, check the power connections to the Amplifier and fuses.
PROTECTION CIRCUIT
Should the Amplifier be “short circuited” overloaded or overheated. the protect
circuit will “shut-down” the Amplifier
CAUTION:
This Amplifier is designed to operate with a minimum load impedance of 1 Ohms in
single amplifier use or 2 Ohms in two amplifiers bridged configurations. Subjecting to
impedances lower than recommended, may constitute to potential damage to the
MOSFET power supply. Follow instructions on section “ WIRING CONNECTIONS”
for further information.
In order to achieve maximum signal-to-noise performance “LEVEL” control adjusts
the signal level from your headunit to match the Amplifier’s sensitivity.
IT IS NOT A VOLUME OR POWER CONTROL!!!
To adjust, proceed as follows:
a. Set input “LEVEL” control to “MIN”.
b. Turn your headunit’s volume to maximum level. If distortion is heard decrease
headunit’s volume until the sound is clear.
c. Turn the “LEVEL” control toward “MAX” in stages, until the onset of audible
distortion is heard. then decrease to level prior to the point of audible distortion
NOTE :
Not performing above adjustment procedure and/or simply setting “LEVEL” control
at or near “MAX” position, may induce electrical audio noise into the system or
break down of the amplifier because driving the amplifier to distortion.
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C. MONO: VARIABLE SUBSONIC FILTER (17-50Hz)
“ON” activates the Subsonic filter circuitry, thus allowing frequencies above
(17-50Hz) to be amplified.
D. 2/4CH: VARIABLE “HPF” HIGH-PASS FILTER (15Hz-600Hz / 150Hz-6KHz)
“12/24dB” activates the High-Pass filter circuitry, thus allowing frequencies above
(15Hz-600Hz / 150Hz-6KHz) to be amplified. You can use this filter as:
• Subwoofer Subsonic filter
• Coaxial speakers High-Pass filter
• Component system High-Pass filter
• Full-Active 4-way system’s Midbass High-Pass filter
• Full-Active 4-way system’s Midranges High-Pass filter
• Full-Active 3-way system’s Midranges High-Pass filter
• Full-Active system’s Tweeter High-Pass filter
12dB = filter slope 12dB/oct 24dB = filter slope 24dB/oct
NOTE:
We recommend to use High-Pass filter always when the amplifier’s channel is not
driving subwoofer, because full -range speakers can break down if subwoofer
frequencies are played with them.
BANDPASS FILTER
S-series amplifier’s LPF and HPF can be used at the same time so they can be used
as a bandpass filters. Bandpass Filters can be used for:
• Subwoofer
• Full-Active 4-way system’s Midbass
• Full-Active 4-way system’s Midranges
• Full-Active 3-way system’s Midranges
FULL-ACTIVE SYSTEM
In Full-Active 3-way system there is subwoofer(s), midranges and tweeters.
2/4 amplifier channels are needed to drive Full-Active 3-way system.
(MD-400.2 / MD-60.4 / MD-200.4)
In Full-Active 4-way system there is subwoofer(s), midbasses, midranges and tweeters.
2/4 amplifier channels are needed to drive Full-Active 4-way system.
(MD-400.2 / MD-60.4 / MD-200.4)
E. CONNECTING LOW LEVEL INPUTS (RCA jacks)
NOTE: DO NOT use in conjunction with High Level input wires.
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