Hardware Detail
©
2004-2011 Sure Electronics Inc
AA-AB32191_Ver1.0_Page 8
FIGURE 2-5 VOLUME CONTROL
TABLE 2-8 DIP SWITCH SETTING
Switch K1 K2 Gain
Status(dB)
ON ON Weak
OFF ON
Low
ON OFF Medium
SW1, SW2, SW3,
SW4
OFF OFF High
2.6 Notes
In order to protect amplifier board and extend its service lifetime, please read the
following warnings carefully since warranties will be voided if you do not observe the
following warnings:
Warning 1:
Quality-related issues caused by potentiometers installed by buyers.
Warning 2:
In order to achieve a better sound quality, please use stable power supply since a bad or
unstable power supply may worsen the sound quality or even cripple the amplifier board.
Warning 3:
Never equip a pre-amplifier to the audio input since the amplifier itself has powerful
amplification ability and a high signal input will burn out the amplifier chip.
Warning 4:
In order to protect amplifier and speaker, please turn the volume output to the minimum
when hooking up the amplifier and you may readjust the volume when you are sure that
the amplifier is functioning properly.
