Anonymous posted an answer for this Visonik V117SX Car Audio Amplifier:
"The RCA cables are for leads from your deck to your amp. Assuming you have an aftermarket..."
Anonymous posted an answer for this Power Acoustik TS1440-2 Car Audio Amplifier:
"On your amp, there should be a switch (on the side probably) that has "LP", "HP", and..."
Anonymous posted an answer for this DHD NTX-2118 Car Audio Amplifier:
"If you're just using the amp for subs just use the low level RCA outputs and cables from..."