My front left speaker began to make a loud noise after being on for about 10 minutes, getting worse. I swapped the speakers around and the sound stayed int hat channel. I disconnected that speaker and the noise moved to the back left speaker, amking me think this was an amp problem not a speaker problem. It became so bad I cannot use my hifi, and miss it a lot.

I think your receiver is damaged.

Try this.

Mark the speaker wires on the back of the receiver. label the speaker connected to the left channel "Left" and the speaker connected the the right channel "Right"

Also pay attention to the polarity (positive an negative) making some type of marking on your speaker wire so you can reconnect them correctly.

Disconnect both left and right speakers.

Connect the speaker wire that is labeled "Right" to the receiver's left speaker connections only then turn your receiver on.

IF the loud noise comes back, this speaker is damaged. I am guessing that the speaker is fine.

Now connect the speaker that was labeled "Left" to the receiver's right speaker connections and turn the receiver on.

IF the loud noise comes back like it did before but now playing through the "good" speaker there is a problem with your receiver.

If so, your receiver is 10 years old. Isn't it time for an upgrade? Try ebay for good used equipment deals.

It sounds to me like your wiring is having problems. An easy way to tell would be to switch your speakers around. Take the ones on the left that you know work, and place them on the right side. If you have the same problem, then that tells you the wiring is having problems. Another problem could be that the speakers are wired out of phase. What that means is that the positive of the speaker is connected to the negative of the radio or amp, and that the negative is wired to the positive of the amp. Do you have an external amp? Try switching them around, and let me know how that works for you.

you have probably damaged the amp chip. inside the radio on the back wall there is a chip with around 10 pins on it that chip is the amp it controls the volume and the left right and front and back, that part will need replacing.

So you wanna run the subs off of the rear pre amp output rather than just the sub out correct? just get a splitter and run both the rear speakers and sub off of rear channel and front off of front channel. or run all four off of front and subs off rear output. this should give you the sound you want

Try swapping the connectors for front-left and front-right (just swap right at the back of the amp)

After the swap, does the front-left speaker work, and now the front-right is dead? If so, then it's a problem in the amp.
If not, then the problem is in the wiring and/or the front-left speaker itself.

Post back here with your findings, and we'll troubleshoot whichever part of the system is broken.

Sounds like you have the ground and live possibly the other way around from the head unit to the speakers. The reason for you hearing it from both the tweeter and the speaker is that the tweeter is connected in parallel to the speaker.
Swap the wiring and try it.

Either you have it configured incorrectly this time around, or the settings are defaulted back to original on your DVR........ adjust your DVR sound properties/settings. and check all wires/connections as well.

It would probably be with the speaker. That is easily checked by simply unhooking the speaker and running the test again.

Sounds (forgive the pun) like that channel's power chip is gone. Take it to a Tech, I may advise...

maybe the equilizers messed up