rumble sound from subs when i turn on/off cd player and when i turn bass knob up

[Haystak 10+ year member]

ill start with saying i have a sundown audio saz-2500, two DD 2512s ported bbox, optima yellow top, 0 gauge streetwire wiring kit.

ground is connected to a seatbelt bolt in back seat.

from subs to amp i using 8gauge..theres terminals on my amp so i basically have both wired seperatly at 2 ohm each...(pos to pos to pos neg to neg to neg) so if im right that equals 1ohm load

problem: when i turn the bass knob up i head a rumbling sound (only first few notches on knob though) and when i turn the cd player on (when amp turns on) you hear kind of a pop sound

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[Groundpounder22 10+ year member]

I had the same problem i had my ground to a seatbolt. I moved it to my frame and got better rca's now im good.

 

[Haystak 10+ year member]

ah, thank you..and am i right about my wiring? i know two 2 ohm loads equals 1ohm....but wiring for my amp is complicated via 2 sets of terminals but internally connected

 

[Groundpounder22 10+ year member]

Yea thats right you have a mutimeter check with that so that way you know your self you have it wired correctly.

 

[Groundpounder22 10+ year member]

Oh hold on... I dont think your right the saz is mono block heres a link woofer_configurationsm.asp#_index

 

[Groundpounder22 10+ year member]

http://www.the12volt.com/caraudio/woofer_configurationsm.asp#_index my bad here it is

 

[Haystak 10+ year member]

i understand...but it has two sets of terminals that are internally connected.....so if i do Option 1 (parallel) = 2 ohm load Voice coils wired in parallel

so if i do that to both and have each connected to their own terminal that would make 1ohm...right? or do i have to wire the subs together? and i dont have a DMM :/