SIA “AIJA AUDIO” Pils Rajons 44, Jēkabpils, LV-5202, Reģ.Nr.45403037487, mob.t. +371 29209384,
,
www.aijaaudio.lv
ACOUSTIC SYSTEMS SUB PF118A, MP112A, MP115
USER MANUALS
GENERAL INFORMATION
Active subwoofer. Corps form- rectangular. Made from – 18 mm birch plywood, corners connected with glue and wooden screws,
painted with structured color.
On the sides have built- in handle, which helps move the acoustic system.
The frontal panel closed with decorative metal grid- painted with powder paint and glued with acoustic foam rubber to protect the
acoustic system from direct water impact and dusts.
In the frontal panel have built- in low frequency loudspeaker 12, 15 or 18 inches. On the sides of acoustic system placed four
tunnels- phase inventors.
Active subwoofer designed on the basis of the passive subwoofer. Differs only with built-in amplifier which is located in the rear
panel of the system.
Amplifier protected against overload with built- in optoelectronic Clip-limiter.
Power amplifier is designed according to class D technology to deliver high efficiency and last heat. Cooling system- automatic.
Power supply source- impulsive.
The amplifier installed low frequency cutoff filters and adjustable crossover filters, used to limit the amplified frequency range.
Input block consists of input control knob, two symmetrical inputs (XLR female), two line outputs (XLR male), crossover filter
cutoff frequency control knob, output signal phase switch.
The line input and output connectors are parallel, i.e. the contacts of the output connector match the respective contacts of the input
connector. This allows to use the amplifier as a signal patching unit (e.g. for supplying a signal to active subwoofer).
Frequency cutoff control knob allows to set up limit of the amplifier bandwidth.
The output signal phase slide switch is provided for 180° reversing of the signal phase in order to achieve the best compatibility of
the sound signal phase of the loudspeaker (in which this amplifier is installed) with other loudspeakers within the same sound
reproduction
system.
POWER REQUIREMENTS
The unit is supplied with a three- conductor grounded AC power cord, and should be plugged into a standard 3 wire grounded
electrical outlet which supplies 230 VAC 50/60 Hz.
BUILT- IN AMPLIFIER BLOCK DIAGRAMM
INPUT CONNECTORS
Use the XLR (male) connectors for the input, and XLR (female) connectors for the line output.
