speakers shut off at high volume help

[burzendowski 10+ year member]

ok i have a memphis mca150 75x2 rms at 4ohms running a pair of digital designs 6.5 coaxials older model with the huge magnets . dd says rms on them is 80 watts. well heres the problem on my 880prs when the volume hits above 50 the speakers stop producing music then come back on , cuts in and out. the amp does not go into protect nor does it shut off. some songs and some days it will go up to 60 without this problem . the speakers really shine when it doesnt shut down and is around 55 on the deck. i have messed with all adjustments nothing changes. i have cut power to the sub amp, still does it so i know its getting enough juice. it never did this when i had the mclass coaxials in there wtf??

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[DidUHearThat? 10+ year member]

What ohm are the speakers?

 

[Oinkypig 10+ year member]

Check the ground connection to the amp. This EXACT same thing happened to me and i checked the ground and it was completely disconnected. I dont no how it was playing without a ground connection but it would cut out at higher volumes and come back on. check all ur connections with a dmm

 

[DidUHearThat? 10+ year member]

Check the ground connection to the amp. This EXACT same thing happened to me and i checked the ground and it was completely disconnected. I dont no how it was playing without a ground connection but it would cut out at higher volumes and come back on.

It takes the neutral feed down the audio rca line, chasis ground, or other route, but cannot provide enough capacity for high power flow.

 

[burzendowski 10+ year member]

speakers are 4 ohm ill check ground i found i also have a lil hiss to the passenger speaker when the volume is at 0