- Feb 10, 2014
- 12
- 0
- 10,520
Ok so I'm having a little bit of trouble with my new car audio set up. Im going to give as much information as possible and hopefully someone might have an idea. First off, Im using a Hifonics HFX12D4 subwoofer and a Precision Power BK650.1d Amplifier. My head unit is a Dual XDM260 (poopy walmart brand I know but its cheap and seems to be doing fine haha).
Anyway I recently hooked everything up and I am not getting any sound from my subwoofer. The subwoofer has two 4 ohm voice coils which i wired in parallel to get a 2 ohm load from the amp. I tested the impedance of the sub from the wire leads that go to the amp and they are reading about 2.3 ohms so as far as i can tell my subwoofer is wired correctly and nothing is wrong on that end.
As far as the amp goes, it will power on and seems to be working fine. The power led is on and the protection mode led is not so it seems to be working normally. Both the remote turn-on wire from the head unit and the power cables have voltage so they also seem to be working fine, yet my subwoofer is still getting no signal. I used a multimeter to test the speaker terminals where my subwoofer gets hooked up and as far as i can tell there is no voltage coming from them. Now i dont know whether that means that the amp is not putting out a signal because it is broken or because the RCA plugs are not giving the amp a signal from the head unit.
My previous subwoofer stopped working in my car and that is the reason I upgraded to this sub. Everything about the previous subwoofer's installation was wrong. The sub was 180 watts RMS and I used a cheap walmart Boss amp that only gave it 100 watts RMS. Also I'm pretty sure it was an 8 ohm sub (not 100% sure because there isnt much product information available for Profile Baja subs, but from the vague information that the non product-specific manual gave it appeared the sub was 8 ohms). I thought that the subwoofer might be blown but I dont know how to tell.I tried testing the impedence with my multimeter and it seemed to hover around 8 ohms for a second each time but the reading would then fluctuate rapidly between something unreasonable like 60 ohms or 0 (this was after it stopped working so i dont know whether a blown speaker would still give an accurate ohms reading).
To me, it seems that everything is working correctly with my new set-up except the actual audio signal itself. That leads me to believe that the problem lies either with my head unit or the RCA cable. The RCA cable was one my friend found for me at his job; he works for a trucking company and they had extra rca cables. Now this cable is definitely not meant for the "Audio Enthusiast." Its pretty old looking and looks like its seen its better days so maybe that's the problem( and maybe its what caused my other sub to stop working instead of the speaker being blown). Is there any way i can test this cable without plugging a new cable into my head unit? I have an 2005 Chevy Cavalier and GM, in their infinite wisdom, decided that you will have to remove practically the entire dash to get to the stereo so im trying to avoid that again if I can.
If anyone has any ideas on what may be wrong or knows a way to test an RCA cable without replacing it I would greatly appreciate it. Also I'm learning a lot as I go so if i seem to be using any terms incorrectly or am doing anything wrong please feel free to correct me. ( I also realize that this is a PC oriented site and that maybe I might have better luck asking the question elsewhere, so even if no one here can help I would love a point in the right direction). Thanks!
Anyway I recently hooked everything up and I am not getting any sound from my subwoofer. The subwoofer has two 4 ohm voice coils which i wired in parallel to get a 2 ohm load from the amp. I tested the impedance of the sub from the wire leads that go to the amp and they are reading about 2.3 ohms so as far as i can tell my subwoofer is wired correctly and nothing is wrong on that end.
As far as the amp goes, it will power on and seems to be working fine. The power led is on and the protection mode led is not so it seems to be working normally. Both the remote turn-on wire from the head unit and the power cables have voltage so they also seem to be working fine, yet my subwoofer is still getting no signal. I used a multimeter to test the speaker terminals where my subwoofer gets hooked up and as far as i can tell there is no voltage coming from them. Now i dont know whether that means that the amp is not putting out a signal because it is broken or because the RCA plugs are not giving the amp a signal from the head unit.
My previous subwoofer stopped working in my car and that is the reason I upgraded to this sub. Everything about the previous subwoofer's installation was wrong. The sub was 180 watts RMS and I used a cheap walmart Boss amp that only gave it 100 watts RMS. Also I'm pretty sure it was an 8 ohm sub (not 100% sure because there isnt much product information available for Profile Baja subs, but from the vague information that the non product-specific manual gave it appeared the sub was 8 ohms). I thought that the subwoofer might be blown but I dont know how to tell.I tried testing the impedence with my multimeter and it seemed to hover around 8 ohms for a second each time but the reading would then fluctuate rapidly between something unreasonable like 60 ohms or 0 (this was after it stopped working so i dont know whether a blown speaker would still give an accurate ohms reading).
To me, it seems that everything is working correctly with my new set-up except the actual audio signal itself. That leads me to believe that the problem lies either with my head unit or the RCA cable. The RCA cable was one my friend found for me at his job; he works for a trucking company and they had extra rca cables. Now this cable is definitely not meant for the "Audio Enthusiast." Its pretty old looking and looks like its seen its better days so maybe that's the problem( and maybe its what caused my other sub to stop working instead of the speaker being blown). Is there any way i can test this cable without plugging a new cable into my head unit? I have an 2005 Chevy Cavalier and GM, in their infinite wisdom, decided that you will have to remove practically the entire dash to get to the stereo so im trying to avoid that again if I can.
If anyone has any ideas on what may be wrong or knows a way to test an RCA cable without replacing it I would greatly appreciate it. Also I'm learning a lot as I go so if i seem to be using any terms incorrectly or am doing anything wrong please feel free to correct me. ( I also realize that this is a PC oriented site and that maybe I might have better luck asking the question elsewhere, so even if no one here can help I would love a point in the right direction). Thanks!
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