RCA Inputs (Low Level)
RCA cables are preferred for best audio performance.
Installation lengths will vary due to sizes.
Always connect with the high-quality cables to avoid any induced noise.
NOTE:
DO NOT USE/CONNECT BOTH HIGH-LEVEL AND RCA INPUTS AT THE SAME TIME
Speaker Input (High-Level)
The high-level input(s) should only be used when your receiver lacks RCA Pre-Amp
Outputs.
If the RCA outputs are not present, connect the speaker outputs from the receiver to
the high-level input connector of the amplifier. Be sure to observe polarity to avoid
audio phase problems.