PA D5000.5 Amp Hiss (even when RCAs unplugged; disappears when sound is played)
Hi Guys! I need advice. I just received my PA D5000.5 amp from Amazon and installed it just a few hours ago. Before the installation of the PA D 5-channel amp, I had another aging temporary 4-channel non-polk local amp to power my MM6501 seps (front) and DB651 coaxials (rear). With the temp amp, I had no noise besides the high-pitched powering off sound when amp is turned off :exclaim:
But with the PA D5000.5 amp, I'm getting some hiss/whine even if:
1) Radio is OFF (same scenario if my volume is set to 0 or fader/balance set to extremes)
2) RCA inputs are NOT plugged to the amp
3) Engine is OFF (I get engine whine in addition when engine is on).
Here's the thing: when I turn on the radio and adjust the radio volume/fader/balance so a speaker plays a sound. The hiss from that particular speaker is gone even I turn the radio off afterwards (and on again) or just the particular speaker using fader/balance controls. This is true even when I start the engine :idea:
But any speaker that hasn't played a sound since initially switching the car from OFF to ACC will have the hiss/whine :exclaim:
The hiss doesn't increase with the volume.
NOTE: My remote on wire is connected to the car's ACC so the amp turns on immediately. Unfortunately, my factory head unit doesn't have a remote out.
But then again, with the temp amp, it doesn't matter, I don't have this noise at all.
What's wrong with my all Polk setup? :sad: