Digital Design M1c, Owner'S Manual, Page: 3 / 12

1) The M-Class amplifiers are working fully stable down to 4/2/1 ohm as single unit.
Daisy Chain connection makes it fully stable down to 2 ohm.
2) The M-Class has the possible highest efficiency and sufficient amount of the parts to maximize
the performance at especially 12V application.
3) The M-Class has 4 ways of accurate protection circuit, as speaker short,DC offset, voltage, thermal
protection which are the most safe-guard.
4) The M-Class are designed in double sided board and use high current mosfet switching devices.
5) The M-Class has 24dB/Oct slope of crossover, Low Pass Filter and Subsonic Filter as fully adjustable.
6) The M-Class has dash mount remote level control which allows convenient level control from
the driver's seat
SS-Class Design Deatures
1) The SSlb is working fully stable down to 4/2/1 ohm as single unit.
Daisy Chain connection makes it fully stable down to 2 ohm.
SS2a & SS4a are working fully 2ohm stereo or 4ohm mono stable.
2) The SS-Class has the possible highest efficiency and sufficient amount of the parts to maximize
the performance at especially 12V application.
3) The SS-Class has 4 ways of accurate protection circuit, as speaker short,DC offset, voltage, thermal
protection which are the most safe-guard.
4) The SS-Class are designed in double sided board and use high current mosfet switching devices.
5) The SS-Class, SS2a and SS4a are full range digital circuitry.
6) The SS-Class is very compact size which can be mounted for small space car.
6) The SS-Class has dash mount remote level control which allows convenient level control from
the driver's seat
3. CONTROL & CONNECTION
3-1. CONTROL & CONNECTION FOR MONOBLOCK
INPUT
Connect preamp signal cables from headunit
to The M-Class amplifier to RCA Input.
POWER &. PROTECTION INDICATOR
Power LED, Green-lit shows correct operation of The M-Class Amplifiers.
Protect LED, RED-lits shows general malfunction, faulty connection and
thermal protection
GAIN
Matching the output voltage of the headunit's RCA line-outs to The M-Class
amplifiers' input section. Its range is 8V to 0.2V.
SUBSONIC CROSSOVER FREQUENCY
Control the high Pass point for the speaker outputs
to eliminate extreme low frequencies.
Its range is 10 ~ 50 Hz @ 24dB/Oct slope
2. DESIGN FEATURES
M-Class Design Deatures