The Stax Thread III
Feb 6, 2018 at 4:08 PM Post #14,026 of 25,487
Hey if you got a mki that's quite a price for it! I've seen them going up on the used market. Some feel that's the best version of the 007
 
Feb 6, 2018 at 5:08 PM Post #14,027 of 25,487
The relation between a couple of the KG and Stax designs a bit unclear to me. The 717 and KGSS schematics are pretty similar. spritzer has said that Stax licensed the KGSS for the 717, but in his article describing the KGSS, KG said that he didn't want to lay out the money for a 717, which could mean that the 717 came out first. The BHSE uses an output stage similar to the T2, but that was designed without KG ever "dissecting" a T2. Stax has never designed a successor to the T2 and has never again used the grounded grid/grounded gate output stage topology, which are used in the BHSE, Carbon and GG. The output stage constant current sources are also different from any Stax design.

Also, Stax has rarely used regulated power supplies in its designs, whereas all the KG designs use some form of regulated PS.
 
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Feb 6, 2018 at 9:03 PM Post #14,028 of 25,487
Stax experts - on amplification needed for the 007.

As I've already mentioned, I am thinking about a placeholder amp until I get get a mjolnir design (out of my budget currently).

I found a list over the different output (vRMS) on the stax amps. Is this the "sole" thing to consider when getting amp for 007? I would think not, but I see the 313 and SRM 1 pro mk2 has essentially the same output. So would they be "equal" in amping the 007 ?
 
Feb 7, 2018 at 9:18 AM Post #14,030 of 25,487
In my experience, the 313 is not up to the task. Dunno about the SRM-1 Mk2. I'd look for a used 717 at minimum if it has to be a Stax-branded amp.

Thanks. The availability is low on the domestic market, only 313, SRM-1 mk2 and 727 II out right now. It has to be a stax amp for now as its mainly a placeholder until I save up cash for a mjolnir design.
 
Feb 7, 2018 at 9:45 AM Post #14,031 of 25,487
5780FB29-8532-4BE3-9249-212F0CD5BAE6.jpeg
DIY fulltube stax amp.. 580v bias... very organic sounding and transparant sound...
 
Feb 7, 2018 at 3:46 PM Post #14,038 of 25,487
Do you currently own a good speaker amp? Why not go full placeholder and use that with a transformer, like a Woo Wee? Is there any reason that wouldn't work for the 007 for now?

Unfortunately I do not.
 
Feb 7, 2018 at 4:17 PM Post #14,039 of 25,487
Sorry again for double posting!

I asked my father, who is an electrical engineer, advice about amplification. He had a look at mjolnir audio and recommended me getting the DIY parts, but he said it would take quite some time to fix it, and with no guarantees on it working. But he also acknowledged that I could save a lot of money going that route.

What are peoples general thoughts on the DIY kits from mjolnir? Would a complete idiot such as I benefit from just purchasing one of the cheaper amps for my 007 or "risk" getting a KGSSV DIY kit?
 
Feb 7, 2018 at 4:22 PM Post #14,040 of 25,487
Sprtizer does not sell kits.

He sells some boards and other parts he happens to have around.

There are not DIY stats amp kits that I know of.
 

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