speaker protect

[norstar815]

Hello guys,

As i know, most of the speaker protect i have seen is for two channels, left and right.

Now, a friend bought a preamp from junk shop but needs 3 amps
i.e. left-right and a sub. I told him to use the M250 speaker protect but needs one more for the sub and i can't find single one.

Needs some help here, i am a newbee and just starting to learn some basic electronics but sure can make my own if theres enough guide to follow. A schem, pcb with parts placement will be
fine.

thanks.

john

 

[jaycee]

Do you mean this circuit?

An externally hosted image should be here but it was not working when we last tested it.

If so, you can just leave out one of the 22K resistors, and associated speaker connection.

 

[dutch diy]

Speaker protect

Hi,

Maybe this device can work for your sub-protection.

http://quadrevisionspot.blogspot.com/2008/03/dada-loudspeaker-protection-delay-pre.html


Jos

 

[Nordic]

If I understand you allready have a 2 channel protection...

Look at the inputs... I suspect you will see they are both connected to the same point.. pin on the module, only seperated by 2 resistors..... it this is the case... you can hardwire another resistor into that point to add a 3rd cahnnel...

Lol, I actualy tested a protection module to destruction levels tonight, shot a nice big chip off the chip even made a small flame, but it died quickly. (lol, pun, I know)...

 

[bigpanda]

Hi jaycee,

Your link for the circuit doesn't seem to work, think you can show it again?