My head unit resets settings when key is taken out

Well, that thing's not a receiver, but here goes...LOL
your manual is here:
http://www.americanmusical.com/ItemFiles/Manual/YamahaNPV60DigitalPianoManual.pdf
going to most settings and pressing the + and - together resets the value for that parameter to factory.

Taking the settings back to factory without wiping data uploaded from the computer
hold the highest white key while powering the unit on.
Clearing computer uploaded data
hold the highest white and 3 highest black keys while powering the unit on.

That first one should FixYa!

Hello
Press "Preset EQ" on the main unit, or "EQ" on the remote control to toggle among FLAT,ROCK,POP,JAZZ, CLASS. The display show the selection briefly. Press "Bass Boost" to turn ON/OFF boosting the bass frequency. OK.

they want you to "level match" the amps head units voltage from the rcas .this is best done with the radio at 3/4 volume , turning the amps gain dial till music distorts then backing off till it sound s clear .if theres other units in the signal chain (eq,x overs, ) see if they too have gain /volume controls . it goes down the line if thats the case . .

the amp probably has a x-over knob, a bass boost knob, and an eq knob. the eq is probably an internal crossover switch that will take the output from either high range (tweeters) or full range (6x9s) or low pass (subs) leave it on low pass. the bass boost however, will add distortion if turned up too high. its not noticable in the car, actually it sounds louder in the car but if you open the trunk and listen, you can tell its distorted bass and actually frying your speakers. the x-over knob is used to tune the frequency at which the amp stops pushing out bass tones. if you like rock music loud, turn it up higher, if you like low deep rap bass, turn it lower. keeping it too high might give you bad sound from either type though. ALSO THE GAIN OR LEVEL.IT IS NOT TO MAKE YOUR SUBS LOUDER IT WILL BLOW THEM .the gain is used to set your amp to your head unit which there is a procedure to do it.

Only parametric EQ OR Bass/Treble can be active at a time. There is a option to set which one you want, refer to manual. Follow this- Adjusting Sound Setting Mode (long press "sound-mode" button) -> EQ SELECT-> select either P. EQ or B/T

greetings. Unless the unit has a bass volume control on the sub itself the only way to lower the bass settings is through the built in eq and or dsgx settings (similar to a bass boost)
ryan
good luck and please rate

the button is stuck for the bass, this is common to happen, you may have to replace the stereo.

Hello, i have a hifonics brutus also, in the manual it states to set the eq at half way, so that there is no clipping or at least to prevent clipping , the eq will make the bass punchier, if you do go pass half way, i would recommend to readjust your gain settings, also check your head unit settings and make sure everything is flat, bass, mid bass etc. example i had my eq past half but i had my gain at mid way, it was hitting hard, then i tried turning the eq all the way down and the turning up the gain and the bass was smoother so it depends where you set it, and what settings you have on your head unit tone control (bass, treble etc)

It's going to be mainly "what sounds best", but I'll give you a start.

• Set the gain to 50%.
• Set the LP filter to 12db at about 80Hz.
• Set the infrasonic filter to ON and at about 20Hz.
• Set the Bass EQ to ON, Q to 0.7, center freq to 40Hz, and boost to about 5dB.

The other settings are going to be based on how the system is connected to the head unit.

If this occurs with the head unit plugged directly into the amp (no signal processors inline, you probably have open shields on the head unit.

To check the shield ground, disconnect all RCA cables from the head unit and measure the resistance between the RCA shield on the head unit and the case of the head unit. It should read ~0 ohms.