Soundmax SM-SA1004 User Manual download pdf (Page 7)

Operation elements

SETTING THE INPUT AND SENSITIVITY

The regulator for input sensitivity is used to adapt amplifier for each car radio or tape deck. Turn the

volume control of your radio to central position and adjust the input-level control (4) Fig. 5, to produce

medium volume. This setting can provide sufficient power and optimum Signal to Noise (S/N) ratio.

CAUTION: Do not run the amplifier in high volume for long time, otherwise the loudspeakers will be

damaged.

LOW-PASS FILTER WITH ADJUSTABLE CROSSOVER FREQUENCY

If the unit is used as a subwoofer amplifier, turn the switch (3) to" LPF". And set proper cross-over

frequency with adjusting the control (7) to make the filter match the timbre requirement of the installed

woofer.

The crossover slope of the filter can accurately reduce the medium and high frequency ranges.

HIGH-PASS FILTER WITH ADJUSTABLE CROSS-OVER FREQUENCY

If the amplifier is used for satellite loudspeakers (mid-range/tweeter loudspeakers), turn switch (3) to

"HPF".

Set proper crossover frequency with adjusting the control (2). The frequencies only above the setting

will be amplified. This can effectively minimizes distortions caused by excessive membrane movement at

the low frequencies. And the result does not reduce the bass level when it is used for small power-supply

loudspeakers.

BASS-BOOST

Use the bass-boost switch (6) to eliminate harmonic distortion of the lower bass frequencies and weaken

the bass faction.

OUTPUTS FOR CONNECTING ADDITIONAL AMPLIFIERS

The input signal of the LOW INPUT connections L and R is directly output to the LINE OUT L and R jacks

(5).

Additional amplifiers can be connected to the LINE OUT jacks without additional T-plugs and cables.

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Soundmax SM-SA1004 User Manual Page 7