Speakers/Amp Combo Help

[mikekay]

Here's the setup:

Kenwood KFC-6983PS

Nominal Impedance 4 Ω

Rated Input Power (RMS) 110 W

Frequency Response 66Hz - 22kHz

Dual XPA 4100 Amplifier

RMS Power at 4 Ohms: 50 W x 4

RMS Power at 4 Ohms: 150W x 2

RMS Power at 2 Ohms: 75 W x 4

KFC-1693PS

70W Rated Input Power

4 Ohm Impedance

80Hz - 22kHz Frequency Response

Alpine CDA-105 Head Unit

3 Outputs

18W RMS x 4

I've determined that my AMP is a peice of shit and want to get a new one. I have a pop that happens randomly at one consitant volume, and its driving me insane. I did all the noise testing mute plugs-- eliminated the deck as cause for noise. Elminated Speakers because I switched the bridge and the popping started comming through the fronts but some noise was still relevant in the back but not nearly as much. The other thing is that after testing everything I rehooked everything back up and now my bass and volume are insanely low, and very high in treble. Im going to get an amp from a friend and just and drive 1 speaker at a time just to see for sure that its the amp. I've tried insulators, ground points etc. Also one last thing that I would like to add is that the sound appears fuzzy even at low volumes the bass is somewhat grainy, not distorted just grainy.

Also if buying a new amp is the solution what would be the best amp for my setup. Is it bad that I have different wattage for my fronts vs backs? would I need two seperate amps?? Plus one for sub??

PLEASE ANY ADVICE WOULD BE VERY APPRICIATED, Im good with electronics, multimeters, grounds, wiring but this one has got me stumped.

Thanks in advance,

Mike K

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[Skittles619 10+ year member]

You probably already checked it but the pop coming out of your speaker at high volumes can be caused by cheap speakers and/or gain set too high.

 

[mikekay]

To clarify the pop is one volume lets say 15, and if Im listening to my music at 25 i cant hear it that much. My Gain's are all the way down. If i put the speakers in parrallel one front and one rear, and bridge the amp at 150W 2ohm, would the total voltage across both speakers be 70 + 110 =180, therefore 150 being okay. Nothing is hooked into the decks built in amp. Also the amp is giving out 50W x 4 @ 4 ohm currently on the setup i have.

Althought that still wouln't fix the popping but who knows. Im kinda desperate here.

If i were to get a new amp which one would I get? with my fronts and backs being different voltages. I would need 2-2 channel amps or could I somehow work a 4 channel.