My subwoofer smells smoky and there's a humming sound..

sounds like your motor is is burning out or someing inside the fridge is burn

Make sure that you've fully pushed in the jack to the sound card.....maybe you've not connected the jack into the correct socket on your soundcard as there are usually 3 identical sockets...but only 1 is the correct one. Sometimes colour-coded green. Try it in each one in turn. If you have headphones, try plugging them in as you will hear sound in them when you've got the correct socket!

The headphone connector is probably defective... loose connection...

No, the CV speakers are very efficient speakers. That means they create a lot of volume for the amount of power. I will start by saying you will be relatively happy but not blown away.

The HK is an alright HT receiver (very new and feature loaded). It makes a rather weak stereo receiver for it is made for a home theater environment. If you only have a pair of speakers (optimal for music listening) then you have paid for a bunch of other channels that will remain dormant. You would be best off to get a very high-power stereo receiver or integrated amp instead of your HK.

CV speakers are built to blast, but they sounds pretty good at the same time.

Feel free to ask me any audio related question, I've worked in the industry for a good part of my life.

Thanks!

Sounds like the grounds are screwed up. Try using a grounded wire for the subwoofer input. If that doesn't work, it sounds like something is internally screwed up, like the power supply doesn't fully power down. I guess besides buying a new amp, just connect it to a power strip where the switch is accesable and shut the sub off with the power supply.

I had almost the same problem. I was Playing music and my speakers kept on shorting out, i smelled burning wires and i look in back of my subwoofers and there melted. i just simply replaced the wires exept with a thicker 14 Gauge wire. But i dont know if your subwoofer is damaged or not. but i would try changing the wires.

If you are a rock music lover, chances are the speaker has burn out. try to turn on and place your ear near the speaker and listen for humming
sound. if no sound at all, then its the speaker

Can you remove connection between the receiver and TV and then try ? If it still turns hums and turns off, then try disconnecting all the speakers and power it on. If it still turns off, then you have a bad receiver...Let me know..

The audio amplifier in the unit has failed, and that's what you smell. Turn it off and quit using it immediately - it presents a fire hazard. It might be possible to replace the bad parts. Depending on what it cost, you might want to take it somewhere for a repair estimate, but be prepared to learn it might not be fixable. Often the burned parts damage the circuit board as well.

Usually this happens in small stereo systems because of running them at high volumes for a long time. If you want to listen to loud music, you would be better off putting the money into a higher-power system.

This is really weird. Normally, the subwoofer must be turned off when you turn on B speakers. But, hold on.. I have recently tried to do the same thing as you do, and the result is the same as yours. The problem is that you have to turn off A speakers completely when you activate Bs. If you have an A/B Speakers switch, first push the A to turn them off, after that press "B" to listen to music downstairs. I hope it works.