No sound MY CT1975 SUB AMP - Creative Labs I-Trigue 2.1 3300 Computer Speakers

Check the wire connections from the amp to the sub. Connect them to any other speaker instead of your sub. If you hear sound the problem is your sub. If you do not the problem is that your amp is not supplying a sound signal to your sub.

Is everything hooked up correctly sounds off I know also could be your amp is going on you cold be a multitude of problems or one of the simple ones i stated

The sub speaker is normally connected to a sub outlet on the amp because the sub circuit outlet is designed for low frequency sound output..
I would not connect the sub speaker as it will affect the left and right channel sound of the left and right speakers.

amp might be bad try switching the rcas around

Hey, I had that same problem and looked over it with my Dad, who's very technically minded. Here's what he found:

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We also had no/weak sound on the left channel of the I-Trigue 3300 2.1. Here's what we found (starting where you left off...).

The internal bias for the input pin for the left channel on the M51132L (pin two on the M51132L between the heat sink and the connectors) appears to have failed. It was sitting at an operating point of around 11 volts (should be 5.4V as the others were) and was only capacitor coupled to other nodes (the input at 0V bias and the chips reference on pin 4 at 5.4V) so it wasn't a case of capacitor leakage. Our temporary fix was to hang a 10k resistor between the node on pin 2 (with the failed bias) and the node on pin 4 (a good bias source). The easiest place to hang it was across the cap that connected to those two nodes. That pulled pin 2 far enough from the rail (down to around 9 volts) to allow it to work at the levels we drive it at while we look for a replacement part. The expectation is that with this kludge in place the left channel will distort before the right one will when the drive level is increased however, for the tests so far, the right and left channel now both work equally well.

Cheers!
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Hope this helps you!
-David S

connect the speake(sub) directly to the stereo(just use one of the rear 6x9 speaker wire to test the sub and make sure it's not the amp. if it does not work, it's the sub

try pluging in a diff, speaker to the amp see if u get sound.try powering the sub with a home radio just to see if u get sound at all if ur getting sound from the sub then its the amp but u could of damaged it when the amp over heated

Hello there..Thats normal only if your sub volume and the pre amp is turned up..Your amp is the cause of the speaker jump..Turn amp volume sub level down a few and check your wire from sub to amp..If all of that is good is a normal operation for pre amp warm up in sub if level is turn to max..Try unplugging amp freom sub then turn sub on stand alone(just sub outlet plugged in and no wires from base amp plugged in..If sub stops the its the amp making the problem..If it still is there then the pre amp is either dusty on inside or the outlet plug that it is plugged in doesnt have a good ground..Hope these help to solve your problem..Have a great day...

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

If the sub isn't working, you won't get a pop. All you need is a small speaker. Don't need a sub, you just want to test the sound. I recently blew 2 subs, no smoke, no smell, no sign of being blown. Absolutely nothing from the subs.... In the past my sub locked up. You can take your sub out of the box and hook the + and - to the battery to see if you can get the sub to pop there. I believe a small box will push a sub into a deep excursion to the center of the cone. I have 2 lanzar VW12D's that just quit. I hooked a 6 x 9 up to my amp and low and behold I had sound! Try that and see what you get...

the amp is no where near strong enough that sound you hear is called hard clipping and it will destroy your subs in minutes. depending on what model JL subs you have I can sell you a better amp.