What happened to my bass?

[5abivt]

Have a factory monsoon with a sub thump box in the rear. Alpine 10" R sub and kicker 400.1 amp lying on the floor. Worked great in my old z and pounded good in this car until a few days ago the bass just isn't there. Sub moves and is working. Green light on amp still. The line input converter was spliced into the right rear speaker I tried splicing into the right mid speaker to no avail. Still sounds like sub is working moving alot but I just don't feel nearly as much bass as before. Any ideas to check anything? Could something have come loose? Or does this sound like an amp issue?

[ORION WS6]

check the speaker box or if sub is mounted to box good. also check polarity of sub wires if dual voice coil.

[5abivt]

Didnt change a thing since I posted last night and on the way into work this morning there was no sub at all At least its off so i know there's a problem. Willcheck after work.

[5abivt]

Didnt change a thing since I posted last night and on the way into work this morning there was no sub at all At least its off so i know there's a problem. Willcheck after work.

[5abivt]

Orion you were right ! I checked the sub box and wow the sub is loose all the bottom screws were pulled from the box so it's kind of hanging

[5abivt]

Ok odd I used bigger and slightly longer wood screws and got the sub in really well. Now there is nothing at all. Amp light is on but there's no sound whatsoever :/ I'm hoping it's just the speaker input I'll check that shortly. Can line converters fail? I hope it's not the amp or sub they both look brand new still. I pulled the speaker out and all the jumpers and speaker wires are perfect still.

[JayTA98]

Ok odd I used bigger and slightly longer wood screws and got the sub in really well. Now there is nothing at all. Amp light is on but there's no sound whatsoever :/ I'm hoping it's just the speaker input I'll check that shortly. Can line converters fail? I hope it's not the amp or sub they both look brand new still. I pulled the speaker out and all the jumpers and speaker wires are perfect still.

is the amp new? I have an old JL 6 channel that the rear right will go out ramdomly. I checked everything and it was relate to the output from the amp. while cleaning the trunk I accidentaly bump into the level knob(potenciometer) of that channel and it started to work again. It turns out it was dirty. I used some contact cleaner and it started to work. just something to check.

[5abivt]

Thanks so much for the input guys. Turns out the amp wouldn't get any signal from the line convertor directly connected to the mid woofer speaker wires (speaker disconnected) I connected the speaker with the line convertor in between and everything is perfect. In fact I'm an idiot for not noticing the diminished bass over the last 6 months from the sub being loose ( bottom of speaker was moveable about 1 inch out of the box) and it was barely being held in by the top 2 screws probably just due to the weight of the sub. It absolutely POUNDS now wow.

I want to slap myself for thinking all my CDs were just bad downloads over the last 6 months or so lol.