Now that the amp was fired up and actually works great. It’s time to set the gains. Diamond adds a twist to setting gains in their instructions by telling you how to use a multi meter to detect clipping as not many people have an o scope. This is a cut and paste:
SETTING THE GAIN
The best way to set the gains on any amplifier is with an oscilloscope and test tone. Using
the scope will ensure the amplifier is not clipping and protect your system from being damaged
from being overdriven. If you have an oscilloscope and need help using it, feel free to call DAT
Technical Support for help.
Another way is with a multi-meter and test tone. Set the multi-meter to DC voltage, play
the test tone at 75% volume. Tune gains up until DC voltage is present, then back the gains back
down a little.
If an oscilloscope, multi-meter, or test tone is not available, find out the output signal
voltage of the head unit. Match the gain knob with that amount of voltage. It should be
between 500 mV and 5 V. If it is above 5 V, the head unit has too much signal and the amp will
clip even with the gain set at minimum. Turn system on and volume to 75%, if there is
noticeable distortion, gains should be tuned down some.
Its time to wire tie the wiring mount the amp and put the seat back in. For seat clearance issues and amp size specs. See this thread
http://www.3si.org/forum/showthread....96#post3022596 Check out the before and after pics too The wires in the before pic are for the active aero spoiler. It looks like the stock infinity 6x9's will make it!
Only time will tell.
Pics