no output from sub
04-02-2009, 11:30 PM
#1
no output from sub
i just finished installing my new mbquart 1000.1 amp and second battery and all that, amp turns on and works but i do not have any output from my sub, when i sold my last amp 2 weeks ago i brougt my box and sub inside and took out the sub and unhooked all wiring and i wired it back correctly (i think) i have a alpine type R swr-1242 sorry for the huge pic. but i have the 2 jumper cables red to red and black to black and then for the speaker wire i have negative on far right and positive on the far left. what am i doing wrong? my sub worked fine before
04-03-2009, 12:22 AM
#2
500 Watt CAFz'r
Join Date: Sep 2008
Posts: 819
How do you know that the amp work? Yes it turn on, but the sub doesn't play...
If the sub was working then it still work now. So, maybe the low pass is set lower than the subsonic and both filter act as a mute, the sub-out on the HU is disable or RCA not plugged in the input of the amp. You can try with an mp3 player to test, but be careful with the gain.
If the sub was working then it still work now. So, maybe the low pass is set lower than the subsonic and both filter act as a mute, the sub-out on the HU is disable or RCA not plugged in the input of the amp. You can try with an mp3 player to test, but be careful with the gain.
04-03-2009, 08:10 AM
#3
Hook up another speaker to the amp...at low volume to find out if it's working. Use a 9v battery to test the sub..+ to +, - to -, if the sub jumps..chances are it's ok..well at least it's accepting an electrical signal.
04-03-2009, 09:57 AM
#4
so i just checked with a dmm at second bat im getting 12.5(car off) and then put it to the power and ground on amp im getting same volts which means theres no power issue(dont think?) then put it to the speaker terminals on the amp and it reads 0 tried it on dc and ac for that. but my sub worked fine on my last amp 2 weeks ago, i took out my sub just now and double checked connections.
04-03-2009, 07:58 PM
#6
500 Watt CAFz'r
Join Date: Jan 2008
Posts: 537
04-03-2009, 08:13 PM
#8
k well i got a couple pics they are crap can thank the wonderfull blackberry cam for that, and i currently cannot take more pics cuz i locked my keys in my trunk FML these couple days arnt workin out so well for me
04-03-2009, 08:32 PM
#9
500 Watt CAFz'r
Join Date: Jan 2008
Posts: 537
I can't tell from the pic, what is your low pass filter set to? Subsonic?
04-03-2009, 08:35 PM
#10
its all your fault kev wouldnt have happend if you didnt come along haha jk it sucks im on my g6 forum trying to see wtf i can do =(
uhm the settings are all at minimum, like i said when i was fooling around with it my sub barely moved with full gain and 3/4 volume, and even with full gain i get a 0 volt read out i dont get that.
uhm the settings are all at minimum, like i said when i was fooling around with it my sub barely moved with full gain and 3/4 volume, and even with full gain i get a 0 volt read out i dont get that.
