Turning On The Amplifier | A | |
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The amplifier automatically turns on a few seconds after you turn vehicle’s igni- | D | |
tion switch to ACC ON or turn on your auto sound system, depending upon how | J | |
you wired the system. The POWER indicator on the top of the amplifier illumi- | U | |
nates when the amplifier is on. | S | |
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Important: Your amplifier requires 90 amps or more of power from your vehicle’s | I | |
battery during operation. To protect your battery from your battery from discharg- | N | |
ing, do not operate the amplifier unless your vehicle us running. | G | |
Adjusting The Audio Level (“Gain Matching”) By Ear | & | |
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For best performance, you must match the amplifier’s input sensitivity to your | U | |
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source unit’s maximum output level. The GAIN CONTROL (MIN / MAX) located | ||
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on the side of the amplifier is designed to do this. It is Not a volume control. It | ||
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adjusts the incoming signal level so that the source unit and amplifier reach | ||
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maximum output at the same time. This assures that maximum system is | ||
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achieved with minimal distortion. |
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1.Turn the GAIN CONTROL (MIN / MAX) fully counterclockwise to MIN.
2.Play full frequency music that has continuous high levels (FM pop music is a good choice).
3.Turn up the source unit’s volume control until just before you hear the source unit’s distortion or 90% of full output (which ever comes first).
4.SLOWLY turn the GAIN CONTROL clockwise until just before you hear ampli- fier or speaker distortion, until you reach a maximum comfortable listening level (which ever come first).
5.Turn the source unit’s volume control back to a desire comfortable listening level and enjoy.
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| FREQUENCY RESPONSE |
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| BASS BOOST ON | ||
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| + 10dB |
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RESPONSE(dB) | 0dB |
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- 10dB |
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| - 20dB |
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| - 30dB | 10 | 50 | 100 | 500 | 1K | 5K | 20K | 50K |
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Note: Raising the LPF frequency allows higher frequencies to reach the bass |
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speakers while blocking lower frequencies from midrange speakers. Lowering |
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the LPF frequency allows lower frequencies to reach the midrange speakers | 14 |
while blocking higher frequencies from bass. |