and I'm not happy with the results.
EQ flat, loudness off, no boost, LPF maxed out, etc...
Used a 50hz 0db test tone downloaded from that realmofexcursion.com website. On the windows media player it showed the wave clipping noticably. I don't know if that will affect the DMM readings. Does it?
So I set the HU at the volume I prefer, 30/50. The subs were unhooked. I set the DMM to AC voltage, and put the test leads (I think that's what they call them) on the correct +- terminals. I played the test tone while the HU was at 30/50. I gradually increased the gain until the DMM read around 33-34 volts.
My amp is a kenwood 8105d and it's rated 300wrms at 4ohms. 300x4=1200, the square root of 1200 is 34.64.
I road around playing sine wave bass heavy tracks, which I believe were all recorded at 0db. How do I know that? I have no clue other than watching the waves on the windows media player oscilliscope. lol
But it wasn't loud like it used to be. It seem like before, I was heavily driving the amp beyond it's rated output and not recognizing any clipping. But it sure was loud.
So did I do anything wrong Or did I just realize what was wrong all along? Also does it matter that the subs were unhooked? Voltage will change to a lower number if impedance is lowered so how the hell does the amp know what impedance it is seeing when the DMM is being used? Does the DMM have an impedance load that will affect the readings? 300wrms at 4ohms is 34.64 volts. 300wrms at 2ohms is 24.50. Soit seems like there should be a load on the amp before testing, correct?
I'm so confused...........