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sapphire 3.0x

Posted: Sun Aug 24, 2008 7:20 pm
by zuraimi
i just purchase an old skool pheonix gold sapphire 3.0x. Once the i wired it up, the led show green color and it means the amplifier is functioning. The problem arose is that once in increase the gain from 2v to 0.2v, it only amplify little signal only. What will be the problem actually? Does it needs to be repair?

Posted: Sun Aug 24, 2008 7:26 pm
by fuzzysnuggleduck
What is the voltage in from your source unit?

Posted: Sun Aug 24, 2008 7:44 pm
by zuraimi
i m not sure about the voltage. Haven test it....but previously i use 4 channel amp where the two channel i bridge it. I use the same wiring setup.

Posted: Sun Aug 24, 2008 9:39 pm
by Billy Sacco
What model head unit?

Posted: Mon Aug 25, 2008 1:01 am
by zuraimi
Just normal headunit, Sony CDX-V4800. Is the amplifier sensitive with the level of source signal?

Posted: Mon Aug 25, 2008 1:01 am
by zuraimi
Just normal headunit, Sony CDX-V4800. Is the amplifier sensitive with the level of source signal?

Posted: Tue Aug 26, 2008 4:39 pm
by zuraimi
I've just opened my amp and notice that one of the capacitor almost torn out and the board around the two resistors are black...later i upload the real picture... could this lead to my problem?