seems like only 1 sub is hitting.

[inferno1985 10+ year member]

system has been pretty nice sounding last few weeks. hitting pretty hard and low. i hopped in my car today for a drive and turned it on. played mediocre seemed like the bass was soft. so i instantly checked the subs. both of the are working. so i checked the connections all tight. battery and ground is solid as well.

idk. when i have the volume up about 70% or more the subs hit but when i turn the bass knob it really doesnt get any louder. actually my voltages drop a few volts maybe down to 12.5-13 volts from a 14.5 volt steady and the bass still stays the same. it seems like it doesnt even have a kick to it anymore. but sometimes the bass will randomly get louder and deeper for a few seconds then get soft again like only 1 sub is working. but they are both moving and playing.

could i have a bad amp? i had my bat and alt tested a few weeks ago and they were good. possibly be rcas?

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[The Camry]

How are you subs wired? do you have one pos and one neg going to a pos/neg terminal on the box and then it splits to both subs inside the box or do you one one pos and one neg going to one terminal and then another set going to another terminal.

Or to put it simply. how many of these do you have on your box.

http://www.americansoundconnection.com/images/D/Sub-Box-Enclosure-2-5-8-Cutout-Diamteter-Positive-Negative-Terminal-Cup-detailed-image-1.jpg

If your sub seems to be hitting randomly hard and soft then it very well could be a loose wire. Have you pulled the subs out of the box and checked if all your wires are tight?

You could individually test each sub. Just hook one up and then play music, then do the same for the other sub. There is such a thing called a passive radiator. Pretty much, the air pressure created from one sub could be moving the other.

Are your subs in their own sealed chamber each or do they share airspace?

could be rcas are bad if they are sending a bad signal. You could test that by using any type of rca. Go get an old tv one and hook it up. If your problem goes away, you will know its your rcas. .

 

[adulbrich 5,000+ posts]

Bass knob or remote gain? If its a 40hz bass boost knob, don't use it anyways. Also, that voltage drop is not great.

 

[inferno1985 10+ year member]

Bass knob or remote gain? If its a 40hz bass boost knob, don't use it anyways. Also, that voltage drop is not great.

its the bass/gain remote that came with the amp

How are you subs wired? do you have one pos and one neg going to a pos/neg terminal on the box and then it splits to both subs inside the box or do you one one pos and one neg going to one terminal and then another set going to another terminal.
Or to put it simply. how many of these do you have on your box.

http://www.americansoundconnection.com/images/D/Sub-Box-Enclosure-2-5-8-Cutout-Diamteter-Positive-Negative-Terminal-Cup-detailed-image-1.jpg

If your sub seems to be hitting randomly hard and soft then it very well could be a loose wire. Have you pulled the subs out of the box and checked if all your wires are tight?

You could individually test each sub. Just hook one up and then play music, then do the same for the other sub. There is such a thing called a passive radiator. Pretty much, the air pressure created from one sub could be moving the other.

Are your subs in their own sealed chamber each or do they share airspace?

could be rcas are bad if they are sending a bad signal. You could test that by using any type of rca. Go get an old tv one and hook it up. If your problem goes away, you will know its your rcas. .

the subs have been fine for a few weeks now. just started yesterday. they are wired to 1 ohm and no they are not connected differently by terminals and box.

i have 2 12's. 2 sets of terminals on box.

and each sub has its own chamber as well

may be the rcas. ive had them for maybe 4 years now? lifespan of these things??

 

[garychoffmann 10+ year member]

Turning up the volume/knob and it not getting louder sounds a lot like clipping. What subs and amp are you using?

 

[inferno1985 10+ year member]

american bass xr12d4 subs

hifonics 3000d.

just noticed mi running them at 2 ohm. i do not have a jumper to each sub..

if the headunit volume is low 10-30 out of 60 and i turn the remote gain up via knob. it gets loud but if i then turn the headunit up music gets loud but the subs kind of drown out. i dont think ive ever had this type of problem before

 

[adulbrich 5,000+ posts]

If they are dual 4 ohm subs, you cannot be running them at 2 ohms on a mono amp. One, four, and sixteen ohms are your only options, unless you are choosing not to use a voice coil on each sub.

 

[inferno1985 10+ year member]

its probably this ****** amp. my ab 150.1 crappe dout on me i believe from the extreme cold temps. like -20 for the last 3 weeks straight.

 

[inferno1985 10+ year member]

i have pos to pos and neg to neg wires connecting both vc on each sub

subs are not jumped together n any wayeach subs is connect to a terminal on the back of box. i have both terminals running to the same channel on the amp.

well the way that i have them wired up seems to be at a 4 ohm load?

one sub has 2 vc, i have the pos from one terminal running to the pos to the other term and same with neg, i then have that sub connected to the terminal of the box.

same goes with the other sub.

both subs have the pos and neg connected to both vc terminals but run to their own seperate box terminal each box terminal has its own set of wires running to amp.

so thats a 4 ohm load then?

i would need to jump both subs between the enclosures so that they are wired together and use only 1 box terminal to create a 1 ohm load?

http://www.avsforum.com/photopost/data/2227460/4/4f/4f75632d_4ohm_to_2ohm.PNG

that is how my subs are wired. but the amp is a mono. problem right?

 

[inferno1985 10+ year member]

Well I headed to the license bureau to get my tags renewed. I Messed With The Wires This morning made sure everything was tight still. Subs pound hard again. So I believe it was just some loose connections . But my question still remains as my ohm load. The picture link j provided is how my subs are wired to a mono channel. So I believe they are wired to 4 ohms? Correct ?

 

[adulbrich 5,000+ posts]

If its a mono amp and you have everything wired in parallel, it is wired to one ohm..

 

[fatboytyler]

its probably this ****** amp. my ab 150.1 crappe dout on me i believe from the extreme cold temps. like -20 for the last 3 weeks straight.

When its cold, be sure to give your amps time to warm up other wise you can pop them.

system has been pretty nice sounding last few weeks. hitting pretty hard and low. i hopped in my car today for a drive and turned it on. played mediocre seemed like the bass was soft. so i instantly checked the subs. both of the are working. so i checked the connections all tight. battery and ground is solid as well.
idk. when i have the volume up about 70% or more the subs hit but when i turn the bass knob it really doesnt get any louder. actually my voltages drop a few volts maybe down to 12.5-13 volts from a 14.5 volt steady and the bass still stays the same. it seems like it doesnt even have a kick to it anymore. but sometimes the bass will randomly get louder and deeper for a few seconds then get soft again like only 1 sub is working. but they are both moving and playing.

could i have a bad amp? i had my bat and alt tested a few weeks ago and they were good. possibly be rcas?

Also, the bass knob is garbage. Ditch it and never use it again. All you're hearing that makes you think you're getting louder is distortion, which will kill your subs/amps.

And with that voltage drop you're either clipping the mother loving hell out of it, or your electrical is beefy enough for that kind of power. Either of which are real bad and could have easily contributed to blowing your other amp.

 

[soundstream5ch]

Also, the bass knob is garbage. Ditch it and never use it again. All you're hearing that makes you think you're getting louder is distortion, which will kill your subs/amps.

Excuse my ignorance, but I just want to be sure I'm correct here. When you set your gains on your amp using a dmm, don't you have to turn that subwoofer remote control all the way up so that you will avoid clipping? Considering you adjusted your amp to the good voltage.

Thanks

 

[inferno1985 10+ year member]

I have mine setup so that I can turn the bass knob all the way down and hear very little bass at high volume. And then turn it up when u want a good kick. I didn't see my amps gains up high while the bass remote is turned all the way down. Imo. The way I have my knob being used is correct. I'm not adding Xtra power to the subs. I'm just turning it up or down depending on 9f I want no bass Slight bass or a lot of bass. If I have my system 80% way up and turn my bass knob 3/4 way I can unplug the connector from the knob that way the amp itself is actually making it louder. But when I do that the bass is even louder. I don't use the knob as a gain booster. Think of it as a volume control for my subs.

 

[inferno1985 10+ year member]

And I just got back from the car audio shop. Got some different terminals and really did my ground and power. To amp. And put in the new terminals on box. Idle and driving I'm seeing 14.5 volts. While the subs are pounding I'm seeing only down to 13 volt drop. I wouldn't think that's bad? Anything under 12 volts is considered bad?