WWW.APART-AUDIO.COM
4
2. Inputs and outputs
9ROXPHSRWPHWHUFKDQQHOXVHWKLVSRWPHWHUWRSUHVHWWKHYROXPH,QFDVHWKHDPSOL¿HUKDVEHHQVZLWFKHG
to bridge mode, this potmeter sets the level for bridge operation.
6LJQDOOHGFKDQQHOWKLVOHGOLJKWVXSJUHHQZKHQDVXI¿FLHQWO\VWURQJVLJQDOLVSUHVHQWRQWKH¿UVWFKDQQHO
after passing the input level control. At startup, the led will light up red during a few seconds, this is perfectly
QRUPDO:KHQLWOLJKWVXSUHGGXULQJXVHWKHSRZHUWUDQVIRUPHURUSRZHUDPSOL¿HULVRYHUKHDWHGRULQSURWHFW
PRGHDQGLVVKXWGRZQ7XUQRIIWKHSRZHU
7KHDPSOL¿HUZLOOQRWWXUQRQDXWRPDWLFDOO\DIWHUPRVWHUURU
FRQGLWLRQV,QVRPHFDVHVWKHXVHU0867WXUQRIISRZHUUHPRYHWKHRYHUORDGRUOHWLWFRROGRZQDQG
WKHQSRZHURQDJDLQ
$3&DFWLYLW\OHGFKDQQHOWKLVOHGOLJKWVXSZKHQWKH$3&FLUFXLWU\LVDFWLYH7KH$3&FLUFXLWU\UHGXFHVWKH
JDLQDWWKHLQSXWVWRJXDUDQWHHWKHIXOOG\QDPLFUDQJHRIWKHSRZHUDPSOL¿HUFLUFXLWVZLWKRXWDOORZLQJDQ\
harsh distortion.
&OLSOHGFKDQQHOWKLVOHGOLJKWVXSZKHQHYHUWKHDPSOL¿HUFOLSV7KLVLVDZDUQLQJVLJQ\RXDUHSXVKLQJ
things a little too far or you are overloading the amp. Reduce the input level by a few dB so that this led never
lights up anymore !
%ULGJHOHGWKLVOHGOLJKWVXSWRLQGLFDWHWKDWWKHDPSOL¿HULVLQEULGJHPRGH
6LJQDOOHGFKDQQHOWKLVOHGOLJKWVXSJUHHQZKHQDVXI¿FLHQWO\VWURQJVLJQDOLVSUHVHQWRQWKHOHIWFKDQQHO
after passing the input level control. At startup, the led will light up red during a few seconds, this is perfectly
QRUPDO:KHQLWOLJKWVXSUHGGXULQJXVHWKHSRZHUWUDQVIRUPHURUSRZHUDPSOL¿HULVRYHUKHDWHGRULQSURWHFW
PRGHDQGLVVKXWGRZQ7XUQRIIWKHSRZHU
7KHDPSOL¿HUZLOOQRWWXUQRQDXWRPDWLFDOO\DIWHUPRVWHUURU
FRQGLWLRQV,QVRPHFDVHVWKHXVHU0867WXUQRIISRZHUUHPRYHWKHRYHUORDGRUOHWLWFRROGRZQDQG
WKHQSRZHURQDJDLQ
$3&DFWLYLW\OHGFKDQQHOWKLVOHGOLJKWVXSZKHQWKH$3&FLUFXLWU\LVDFWLYH7KH$3&FLUFXLWU\UHGXFHVWKH
JDLQDWWKHLQSXWVWRJXDUDQWHHWKHIXOOG\QDPLFUDQJHRIWKHSRZHUDPSOL¿HUFLUFXLWV
&OLSOHGFKDQQHOWKLVOHGOLJKWVXSZKHQHYHUWKHDPSOL¿HUFOLSV7KLVLVDZDUQLQJVLJQ\RXDUHSXVKLQJ
things a little too far or you are overloading the amp. Reduce the input level by a few dB so that this led never
lights up anymore ! Don’t ignore this !
9ROXPHSRWPHWHUFKDQQHOXVHWKLVSRWPHWHUWRSUHVHWWKHYROXPH,QEULGJHPRGHWKLVSRWPHWHUKDVQR
function.
)URQWSDQHOOD\RXW
1
6
7
8
9
11 16 17 18
19
10
2
3
4
5
12 13 14 15