I've searched for this but I've only found 1 thread which relates to this issue and there wasn't even a remedy for it.

Currently, all my speakers, including the sub, are stock Bose's. I installed a Panasonic CQ-C9701U headunit in January. Everything was working fine until few weeks ago - my sub started cutting in and out. By that I mean, it makes a popping-like sound (similar to the sound caused by flicking an empty plastic cup), then I completely lose my bass. A lot of the times, the sub will kick back in after a while (after turning the stereo off or lowering the volume and waiting 1 to xx minutes). It happens almost everytime I turn the volume up (before, it was working perfectly fine at the same or higher volume level). While the bass isn't hitting, all other speakers and headunit are fully functional and they don't seem/sound to be affected.

I doubt this was the cause, but it may be related. A week before my sub started cutting out, I had taken all the interior plastic panels. No wires were touched, from what I recall, but I do know that the speakers, amp, and the sub were exposed. It was during this time the bass started cutting in and out. Everything is back in place, but the bass still isn't functioning properly.

Any and all help would be appreciated.

 

probably a pinched wire somewhere from when you re-installed all the panels.

 

I guess that makes sense in a way.. but what about the bass cutting out while the interior panels were off?

 

Maybe something got pulled on a little during the dismantling and it is still loose now?

 

Its probably the amp for the Bose sub. I had a problem with just the Bose sub cutting off and on randomly although I did notice it was sort of sensitive to bumps. The reason I found out it was the amp was because I finally unbolted it and left it connect with the sub playing; I hit it a few times and it would cut off, hit it a few more times and it would come back on.

I bought an amp from someone here and its worked ever since.

edit-
After reading more of it, it does sound like the amp. When the volume was turned up, the vibration from the bass would cut the amp out.

 

It sounds like the amp is shutting itself off to protect itself. Double check all your connections to the amp, and especially the power and ground wires.

 

I thought that was the problem too until I realized it was sensitive to vibration.

I'd say pull the amp out of the stock location and leave it connected to the sub, let it play and just kind hit it a few times to see if it cuts off. It should do this regardless of how loud you have it.

 

Well, I had to stop by the Nissan dealership today for something and I asked one of the tech guys there about this. According to him, my aftermarket battery (which I neglected to mention in this thread) is at fault most likely. Its CCA is only 220 and he said he recommends at least 550. He also said that adding a capacitor to the stock amp may also help (after replacing the battery).

For now, I'm going to just put my stock battery on and see if that was the culprit. If not, then I will try you guys' methods. Thanks a lot for your help, guys.

 

Just an update on my whole ordeal..

As stated above, I thought it was my lightweight battery with a weak CCA that was to blame. However, after talking to some guys at Fry's Electronics and a local audio shop, I found the real reason.

It turns out that the stock Bose sub is too weak to handle what the headunit was outputting. Because I had my music blaring at times, straining the sub, pushing it past its limits, the sub's coils blew. It works most of the times, but when under load the sub will cut out.

So, the best remedy would be to replace the weak stock Bose sub with another. However, I don't want any extra weight (to me, performance > all), which means enclosured subs are out. That leaves me with two choices - free air subs or replace with a stock sub.

Free air subs would be the best bet, but there's only 2 of those available (Clarion @ $120 and JL @ $250) as no company likes making those. Replacing the stock sub would be the easiest way, but the stock Bose sub isn't cheap. So for the time being, I'm just going to leave it alone, and not turn the music/bass up.

 

I'll be taking my Bose sub and stuff out once I'm ready to install nitrous which will be later this Summer if you're interested.

 

Yea, let me know when you take the sub out. Thanks.

I think I found a guys selling one for real cheap, but I'm too lazy to go search (ironic).

 

LOL

I will let you know once its all its said and done. Doubt I will ask much for it really.

 

Same issue here all speakers and sub are stock but the headunit is a Alpine unit and it also is sensitive to bumps where it cuts off and on.

 

For my case, it the stock sub itself. I blared too much bass/music overpowering the sub and breaking it. I'd recommend that you go to a local shop and explain your situation. Ask what could possibly be the problem in your case. Good luck.

 

Is 8lbs okay?
http://www.edesignaudio.com/edv2/pro...roducts_id=106

It took awhile for me to figure out why the Bose sub is such a big deal until I figured you were weight conscious. Tee hee!

 

Was going to say it definetly wouldnt be the battery, the stock battery in my car now puts out 220 CCA and im pumping 850 watts rms on my amp, so the bose definetly can use that lol.

 

Is this what you would recommend? I like listening to music that "booms" (which is how I blew my stock Bose sub). I know that Infinite Baffle (free air) subs are generally weaker in output and sometimes in quality, but again, I don't want to spend money on sound nor do I want the extra weight. Also, will this be just plug and play or do I need to mess with a lot of stuff (amp, tuning, etc etc). I'm a complete noob when it comes to audio, so any and all help is greatly appreciated. Thanks in advance.