[Whitigir]

Of course the SR009 do not sound as good as with my BHSE but... it still the M-3 is surprisely good for it's size and price. Definitively a very good solution that surprised all my friends who heard it.

You are not afraid of burning out your diaphgrams aren't you ?

 

[mulveling]

Yeah..."surprisingly good for the size" doesn't hold a lot of weight when potential damage to the 009 is in play. I would just get some Koss PortaPros man.

 

[paradoxper]

Hey, better than iBuds, that's something. No matter the risks. This is the Summit.

 

[MayorDomino]

The person must have serious hearing problems. I had a 404LE with an older SRM-T1, which is essentially the same as a 006, and there was no issue with volume.

Thought so. thanks.

 

[bmichels]

Yeah..."surprisingly good for the size" doesn't hold a lot of weight when potential damage to the 009 is in play. I would just get some Koss PortaPros man.

what potential damages ? why do you think the Kingsound is not appropriate for the SR009 ? I understood that there are compatible....

 

[Thaudiophile]

Does anyone sell a used Sr omega?

 

[Whitigir]

Does anyone sell a used Sr omega?

Go around classified ads, you will eventually see it pop out here and there

 

[Thaudiophile]

Thanks I am very interested in that headphone

 

[JimL11]

what potential damages ? why do you think the Kingsound is not appropriate for the SR009 ? I understood that there are compatible....

All the modern Stax amps have three "protection" features in their circuit to prevent damage to the diaphragm if the worst happens. First, the outputs have 5.1 kilohm resistors in series with the output devices, second, the bias supply uses 0.1 uf caps to limit the amount of energy in the supply, and third, the bias has a 5 megohm resistor after the last capacitor to limit the amount of current that can flow into the diaphragm. The Woo WEE has been "dinged" for not having the last feature (and possibly for having large capacity caps as well, which are not needed for the bias supply). I don't know specifically about the Kingsound M3, however back in 2013 Kevin Gilmore looked at an M10 and here is what he said (Kingsound Head-Fi thread, post #435):

"wow, just wow and I don't mean that in a good way.
http://gilmore.chem.northwestern.edu/m10.jpg

might as well be a tube amp. 47k plate resistors and .01uf wima output caps.
STD1nk60 mosfet outputs. similar to sennheiser hev70.
no wonder there is no bass. 588 volt bias which does not match the specs.
lots of places in the middle to change resistors to get any bias voltage you want.
R108,R141,R142 in series directly off of B+, C122 directly to ground at output jack.
DO NOT EVER PLUG A SR007 or SR009 into this thing."

Also, here is spritzer (Kingsound thread, post 451)
"That cap after the ballast string is a very bad idea with modern Stax models."

Incidentally, according to spritzer the 2013 M10 circuit appears to be a clone of the Stax SRM1 MkI (circa 1979), the M20 appears to be based on a Stax DIY tube circuit from 1968, so who knows what ancient circuit the M3 is based on?

 

[Whitigir]

Thank you sir! Such detailed posts and efforts to dig them out . Let's not stop the guy from his endeavors

 

[JimL11]

Another post from the Kingsound thread, this time on the M20 by Kevin Gilmore (post #554):

"m20 also has a capacitor direcly on the output of the bias line.
do not use with stax headphones."

So that appears to be a common engineering deficit of the Kingsound amps. Honestly, I'd rather not risk it.

 

[statfi]

Anyone have a pair of burnt 009's they would be willing to sell for cheap? Really. I want to tear them apart and do things I don't want to do to my good 009s, at least until I know how to do it without damaging anything. PM's welcome.

 

[Whitigir]

Anyone have a pair of burnt 009's they would be willing to sell for cheap? Really. I want to tear them apart and do things I don't want to do to my good 009s, at least until I know how to do it without damaging anything. PM's welcome.

Lol, I think if someone keeps on being so braver with their 009, you will hear good news soon

 

[VandyMan]

The risk is only at high volume, as I understand it. I'm not likely to hook up my 009s to my KS M-10, but it is not like plugging them directly into the wall or something.

My KS headphones should be as vulnerable as the 009 to being damaged, but they are fine after something like four years of use.

 

[Quixote79]

Another post from the Kingsound thread, this time on the M20 by Kevin Gilmore (post #554):

"m20 also has a capacitor direcly on the output of the bias line.
do not use with stax headphones."

So that appears to be a common engineering deficit of the Kingsound amps. Honestly, I'd rather not risk it.

so why you not fix the same when you want to do better T1 at other site? you not notice in T1 and now big deal ? you not like Kinsound?