spritzer

Nate is right that tube matching is essentially a fruitless exercise. If we leave aside the drift of the circuit in general then the tubes will wear out at different rates so any matching will not last.

Happy Birthday Marc. I just matched some jfets which should make you happy...

Perhaps it was the pure terror of owning anything from The Gilmore Group or the lack of an industry insider consideration (reads should be free)....

Don't make me come over there!!!!

009's in general. It's been noted from day one that they can't do bass like the 007Mk1/SR-Omega.

My 007A's have the pots plugged, use Mk1 springs and I did some small mods to the earpads. Due to the new headpad on these the correct fit is even more crucial than with the Mk1. Early would be from the early months of production. Serial numbers mean nothing at Stax. There is indeed nothing wrong with the phones, well not a long term thing anyway. It's just a combination of the metal stators, the film and its coating which is at fault here but it is a more frequent issue than with most other sets. Stax have always continuously tinkered with the designs over the production run. The 007Mk1 is actually three different headphones which just share the name for some reason. The 009 aren't perfectly fine (far from it actually) and my 007's aren't dark either. When Bob was here on Monday and Tuesday we chatted about the 007 and he said he didn't like them. Fair enough but it was also clear that the fit was never good for him so I taught him how to make them fit perfectly. When he gets back then we'll see if the better fit changes anything for him. The end result should be what the 009 could have been, an improved SR-Omega. To tackle the imaging the only thing I can do is to stuff the pads on the back. Well either that or just replace them or the stuffing. The bass is a bigger issue as there is clearly a section of the upper bass missing plus a suck out of the lower bass. There has to be an opening somewhere but I'll give it a week until I start ripping them apart...

Tell me that's the one that Justin built and not the shitbox pabbi1 fucked up?

I prefer the highly modified 007A but the difference is slight. They will how ever last much longer, no cable issues and all that. Hell no that they will be used... ever but how cool is it to have some of Single Power's finest.

I was more jesting at the HF thread on the imbalance issue where nobody has the slightest clue and it has been suggested that PJ sets are somehow different... I can't help but get this slight feeling of betrayal when I look at this pile of shit and the epic work ahead of me...

...so I've had my new SR-009 for two days and I've already started to modify them. First for the good stuff, these aren't as fucking bright as all the early units I've owned/had access too. They can be a tiny bit too hot at times but this a marked difference to the earlier sets. This also means the odd reverberation with voices is also mostly gone. The bad news is though that the bass has a large gap in the FR simply missing and the imaging is far from good. Coming off a steady diet of SR-Omega and modified SR-007 SZ2 these two factors are all too apparent. There is a strong center image but it lacks the cohesive soundstage of the two older models. I suspect the earpads are to blame for most of this as they are virtually flat compared to the steep angle of the SR-Omega. As for the bass, it's either down to the diaphragm or there is a small port hiding somewhere in there. I suspect it is the latter as that "made in japan" piece is highly suspect. Ohh and this is a set that came from Price Japan and guess what, no channel imbalance....

I will then modify it for Megatron duty...

Sure, that would work too but I'd use 1W.

1W is plenty

One label is incorrect but that's all. They are 2SA1486 in the - supply

I needed a set to tune the new KGSSHV Carbon which will be designed specially for them. Also the price was too good to not get one.

He ended up with my last KGST. Here I am listening to my brand new SR-009 which showed up today from Justin on my personal KGST after dropping Bob off at the hotel.

Mine is still fubar so that won't be happening. Well we could do mono...

If the CCS is toast then you couldn't adjust the offset and balance so it has to be working.

There is very little drift in this design so the servo isn't as vital as with the KGSSHV but it helps as the tubes start to age.

Try 1.37K or even 1.2K for the offset resistor. Running without tubes is a very good way to burn up the CCS...

Yup, the gap factoring in the displacement and over all insulation properties of the air.

I like this show a lot, kinda liked the Tunnel too.

Yup, built one in 2012 fully point to point. Sounds much better than the old version plus lower distortion.

It isn't quite that linear and varies from driver design to the next.

Given the issues we had with the resistor brand I'd guess so. Angle brackets are a good idea though. They support the boards and make testing far easier. Easy to drill by hand too.