Resistor?

[Enochrome]

Hi All,

My friend bought some B&O speaker at a thrift store and he played them for me and they didn't sound right. He was pretty bummed, so I told him I would try to help him. I opened both up and they both had the same burnt resistor.
The only thing is I don't know what kind it is to order a new one, could someone help me decipher what value it is so I can order a new one? Thanks!!

 

[rayma]

Get a 10 Ohm 5 watt (or even 10w, or 20w) wirewound resistor.
The higher power resistors are longer, though. See if they'll fit before ordering.
Any local electronics shop (if you have one) will have these resistors.

 

[Galu]

The fact that the resistors have overheated may mean that the tweeters have been damaged by playing the speakers too loud.

You'll soon know for sure when you replace the resistors.

 

[Enochrome]

Get a 10 Ohm 5 watt (or even 10w, or 20w) wirewound resistor.
The higher power resistors are longer, though. See if they'll fit before ordering.
Any local electronics shop (if you have one) will have these resistors.

Thanks so much!! That was quick and easy!! Very much appreciated.

 

[Enochrome]

The fact that the resistors have overheated may mean that the tweeters have been damaged by playing the speakers too loud.

You'll soon know for sure when you replace the resistors.

That is very true. Who knows how these speakers were treated. He paid 5 dollars so you get what you pay for. Ordered the resistor hope they work.

Thanks for the input!

 

[Cal Weldon]

I know resistors are cheap but they are designed to outlive the drivers they are used for. If they look like that, for sure test the drivers before bothering to order the resistors.

Edit: I see you ordered them already.

 

[Enochrome]

I checked the drivers by ear, but that was the extent of it. The midrange and the tweeter are enclosed in a plastic case that is not easy to access. If it does not work, then my friend learned a lesson on buying speakers without listening to them. He wanted the speakers to match his Beomaster system.

 

[rayma]

This resistor is probably just in series with the driver(s), for level matching.
If you short out the two ends (where the resistor was), you should be able
to get sound out of the driver(s), although they will then be too loud to properly match
the woofer (and the crossover point will shift). Just a little volume, don't need to blast it.

There's also the possibility that the resistors are still functional, and the drivers are blown.