will this DMM work to set my gains?

im having problems....i put the black lead in the neg speaker terminal and red in the positive terminal.....and then i play a 0 db 50 hz tone and i'm getting a reading of about a hundred somethin that fluctuates all over the place and doesnt change when i turn the gain knob......anyone know what the problem is?....and also what range do u put the meter on.....theres 1000, 200, 20, 2000m, and 200m

 
ok...well my dumbass was using dc...so i set it to ac and i got the gain set up.....but how i do i set the ssf and lpf?.....how do i measure where they're set?

i usually ahve a shop set-up my amps when i get a fresh install so ive never done this b4....and since im simply swappin out amps i dont wanna take it to a shop

 
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walkychalky

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