ADJUSTING THE X-OVER AND BASS
Select the source input |
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2 CH. BASS = 2 channel input with bass boost on front and rear channels |
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2 CH = 2 channel input with bass boost on the front channel | Select the operation mode for the | |
4 CH = 4 channel input with bass boost on front channels only | ||
front and rear channels | ||
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ENGLISH
You can add up to 16dB of bass boost |
| BASS | |
by adjusting the Bass Boost control. |
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| BOOST | |
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| 0 | |
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| dB | |
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| 16 | |
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| FRONT | |
FREQ Hz | HIGH | ||
| 110 | ||
55 | LOW | ||
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240 | |||
600 | |||
330 |
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| 2 CH. BASS | STEREO FRONT | POWER | |
| 2 CH. | BRIDGED (F R IN) | ||
| 4 CH. | L+R MONO |
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| REAR | |
SOURCE | REAR | L+R MONO | ||
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| FREQ RANGE | BRIDGED (F L IN) | |
| FREQ Hz | X 1 | STEREO | |
| X 10 | HIGH | ||
FULL | 110 | |||
FULL | ||||
55 | LOW | |||
| 240 |
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| 600 |
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| 330 |
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Select the crossover | Select the crossover | Select the crossover type for the | ||
point for your rear speakers. | rear speakers | |||
point for your front speakers. | ||||
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Select the crossover type for the | ||||
front speakers | Out = X1 (55Hz - 600Hz) |
In = X10 (550Hz - 6Khz)
FINE TUNE THE SYSTEM
Fine tune the amplifier's input sensitivity.
GAIN | T h e | g a i n | s e n s i t i v i t y c o n t r o l f o r | t h e | “ M G A ” |
| amplifier is located on the side panel. This gain control | ||||
| has | been | included to allow adjustment | to | properly |
match the output of the radio. This is one of the most
misunderstood adjustments. By rotating the control in the clockwise direction, the amplifier‘s input will become more sensitive and the music will play louder. This is
not a volume control and you will not get more power out of the amplifier in the maximum position! It may seem to deliver more output, but actually the system is only playing louder faster as you turn the volume control on the radio. Ideally, to properly level match the system the goal is to achieve maximum output from the amplifier without distortion at about 3/4 of the volume control.
To determine if the amplifier’s gain is set properly, turn the system on and slowly increase the volume control. You should be able to use about 3/4 volume before the system gets loud but not distorting. It is very important when making these adjustments that you do not over drive the speakers (at point of distortion) this will cause permanent damage to the speakers. If you are unable to achieve 3/4 volume before distortion you will need to adjust gain control (in this case you would reduce the gain). The gain controls should be adjusted very slowly. It may help to have another person to assist you by adjusting the gain controls while you listen for distortion.
10 | MGA AMPLIFIERS |