what just happened to my receiver?

[craig7]

so i was just testing out a speaker that i made, and it wasn't doing anything so i turned up the volume and nothing happened so i turned up to max and the voice coil started to smoke so i unplugged the speaker and i left my room to throw it out and when i came back in my receiver was making a high pitched tone so i turned it off and it stopped, i turn it back on again and it good but then after it was on for a minute it beeped once and continued to function normally. so what happened to it, did i blow one of the channels? it didn't go into protect mode so i don't know what happened

 

[dkane360]

Receivers aren't invincible pieces of hardware. You have been really pushing your receiver to do things it was never meant to do and beyond its capabilities. Unless you start using it for it's normal function, it's probably not going to last much longer.

 

[craig7]

Receivers aren't invincible pieces of hardware. You have been really pushing your receiver to do things it was never meant to do and beyond its capabilities. Unless you start using it for it's normal function, it's probably not going to last much longer.

95% of the time i use it for music, 4% of the time i use it for movies and only 1% of the time i use it for stuff like that

 

[dkane360]

95% of the time i use it for music, 4% of the time i use it for movies and only 1% of the time i use it for stuff like that

It only takes one time

 

[craig7]

It only takes one time

well i was using the speaker b mode so if anything i would have only blown the the left speaker b channel?

 

[markw]

A channel, B channel, it doesn't matter.

well i was using the speaker b mode so if anything i would have only blown the the left speaker b channel?

Both are driven from the same amplifier channel.

And, when one goes it's not unlikely the other will as well.

 

[TLS Guy]

so i was just testing out a speaker that i made, and it wasn't doing anything so i turned up the volume and nothing happened so i turned up to max and the voice coil started to smoke so i unplugged the speaker and i left my room to throw it out and when i came back in my receiver was making a high pitched tone so i turned it off and it stopped, i turn it back on again and it good but then after it was on for a minute it beeped once and continued to function normally. so what happened to it, did i blow one of the channels? it didn't go into protect mode so i don't know what happened

What was that speaker and what was the crossover circuit?

You had no sound, but the receiver was sending a lot of power to the speaker as the voice coil smoked. If the receiver had DC off set, and the protection should have stopped that, the receiver would not work now.

So I think you had a circuit that presented a strange highly reactive load to the receiver and sent it into a supersonic oscillation. You are lucky that receiver works, but it may yet be damaged.

I suspect you need a lot of guidance with your builds. I think you need to publish the details here for review before you connect up anymore of them.

Kids need mentors. I was lucky in mine.

 

[Davemcc]

I think you need to publish the details here for review before you connect up anymore of them.

I think this is true.

 

[highfigh]

so i was just testing out a speaker that i made, and it wasn't doing anything so i turned up the volume and nothing happened so i turned up to max and the voice coil started to smoke so i unplugged the speaker and i left my room to throw it out and when i came back in my receiver was making a high pitched tone so i turned it off and it stopped, i turn it back on again and it good but then after it was on for a minute it beeped once and continued to function normally. so what happened to it, did i blow one of the channels? it didn't go into protect mode so i don't know what happened

First of all, turning the amp up to the max is a bad idea under ideal circumstances. Doing that and disconnecting the speaker while it's turned up all the way is not going to make the receiver last long. Amplifiers need a load on the output terminals, just like a car engine. Put your foot to the floor when the transmission is in neutral and it won't be long before parts start to fly through the hood.