I just bought an Infinity Kappa 52a 2x 50 watt amp off ebay. He said it worked previously, but when hooked up it powers on normal but plays very quietly. Does anyone know what would cause an amp to play really quietly but when the gain is turned it crackles in the speakers really loud.
Thanks for the input.
Phill

 

Well it doesn't sound good. By the way you describe the sound crackling when you play with the gain makes it sound like there is something wrong inside the amp. Assuming everything is hooked up right (power ground and rcas) what could cause diminished volume, or no volume most of the time, is the speakers the amp is hooked upto are blown or the speaker wire is grounded.

 

i had that same problem
playing quite, i plug my rca backwards
crackles, my ground wasn't a flush ground, i took off the ground wire sand down the body till i took off the paint and see metal, fix my problem right away, maybe it'll help you

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lv6l &raquo;</TD></TR><TR><TD CLASS="quote">i had that same problem
playing quite, i plug my rca backwards
crackles, my ground wasn't a flush ground, i took off the ground wire sand down the body till i took off the paint and see metal, fix my problem right away, maybe it'll help you</TD></TR></TABLE>

jsut curious....how do you plug an RCA in backwards?

 

Sounds like your speakers are wired to a high ohm and the amps not putting out enough power so the speakers are crackling.

That kind of speakers are you running and what ohms are they? Also are they dual or single voice coil?

 

i plug is backwards by the color, white/red or black/red, or R/L get it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lv6l &raquo;</TD></TR><TR><TD CLASS="quote">i plug is backwards by the color, white/red or black/red, or R/L get it?</TD></TR></TABLE>

Physically impossible to plug rca's in backwards. The amp doesn't care about front/back or left/right. You can wire rca's backwards but not plug them in backwards.

 

Do you get any humming noise.