PA D5000.5 Amp Hiss (even when RCAs unplugged; disappears when sound is played)
fleas2016
Posts: 12
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:
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:
Post edited by fleas2016 on
Comments
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Try posting this in the "On The Move" section below.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
OK, done. Thanks!
I'll update this thread with new information anyway just in case the Polk support staff will check this:
[UPDATE] I have some more points that I found out about my issue:
1. Let's say the car is on ACC with my HU off and I am getting this buzzing sound. If I open the driver-side door, I get this alarm that my key is still in the keyhole. Pretty normal, right. But once I close the door, the alarm stops.. AND so does the buzzing from speakers :exclaim:
2. After two hours of driving with stereo on (moderate levels most of the time with some elevated levels towards the end), I checked the amp. The PA D5000.5 is hot to the touch (not scalding but I can't keep my palm on it for more than 3 seconds). Now, this is a class D amp and I believe my temp amp is a class A/B amp and its freaking huge, but I never felt it this hot. -
Previous Amp:
New Amp:
