need help with amp and speaker problem

[ogustuce 10+ year member]

hi, i have a problem that drives me crazy cuz i cant figure out how to solve it (i tried many different thing with no result)

my problem is: the output sound cuts when i raise the volume but comes back when i lower it.

soundstream speakers 80w rms / 4ohm

amp: pioneer d9500f (Pioneer GM-D9500F (gmd9500f) 800W Max Class FD 4-Channel)

I did set the amp gain with a DMM so technically eveything should work well. so SQRT(80x4)= 17,8v

so i put my HU vol to 37 (max is 50 so 37 is like 75%), play a speaker test tone and set the gain so the volts/chan is 17v at vol 37. technically if i dont raise the volume above vol37 everything should work with no problem? The problem is, sometime i put vol at like 20,25,30 and the output sound cut(stops). when i lower the volume the sound come back.

Did i do something wrong when i set the gain? any ideas on how to solve my problem?? please this is driving me crazy lol (i tried different plugings,changed my old amp for the pioneer one,and other things with no results)

its currently pluged 1 speaker/chan

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[jteske88 10+ year member]

Voltage dropping out?

 

[ogustuce 10+ year member]

Voltage dropping out?

what do you mean? not enough power to the amp? (so a capacitor would solve this?)

 

[jteske88 10+ year member]

Do you have a multi meter, or voltmeter? I would check voltage first to be sure. Most likely I would go back and check your grounds and power connections first. A bad ground will usually be a culprit in most cases. And what is you remote off of?

 

[ogustuce 10+ year member]

i have multi meter(i can check ohms,volts,amps,current with it) i did only check volts tho. for power, (4 gauge wire) batt -> fuse -> dist block -> 2x 8 gauge wire -> one goess to the speakers amp and the other goes to a capacitor then to the subs amp. Capacitor,sub amp and speakers amp all have a different ground spot and all are with 4 gauge wires.

(and as i said in the first post, at volume 37 on HU theres 17-18volt max/channel)

 

[ogustuce 10+ year member]

bump

 

[jteske88 10+ year member]

what is the voltage of battery postive when voltage cuts? And did you check your grounds and power like i stated?