Head-Fi.org › Forums › Summit-Fi (High-End Audio) › High-end Audio Forum › Question about amps for the Stax SR-009
New Posts  All Forums:Forum Nav:

Question about amps for the Stax SR-009 - Page 24

post #346 of 722

those 2 units are the result of a pile of parts from hennyo.

The chassis however are new, and much more expensive than

the parmetal things. Fully machined front and back panels.

alpha pots. transformer is potted, not sure where birgir got that.

 

kgsshvk boards are not any cheaper than the previous version boards.

just physically smaller. more expensive actually if you populate

the servo.

 

The kgsshvk amp board and the T2 are the only fully dc coupled

electrostatic amplifiers with active dc servos at the present time.

+/- 1 volt stability over time and temperature.

 

There does not seem to be a way to do the off board version with

servo without going multi layer. Or adding the servo on an additional board.

 

The k series power supply board can be partially populated

for a bit cheaper build.

 

i'm currently on a massive software job that is going to take

till January at the earliest. But I do plan on a standard punch

file for the standard parmetal chassis for the k series boards.

including the front and back panels.


Edited by kevin gilmore - 8/7/13 at 5:04pm
post #347 of 722

What about the SRM-600 Limited?  Its a hybrid tube design and add a nice amount of warmth to my SR-507.  It might also be a good pair with the SR-009.

post #348 of 722

What the heck is the difference between the Stax tube amps that pretty much look alike: the 007t/ii, the 006tS, and the 600LE ?

I see the last is discontinued, and the others have 4 vs. 2 6FQ7s, and the 600LE used an ECC99.

Why all these versions?

post #349 of 722

Two is ok, four is better!

These versions traversed time.

Run a search for the Stax chronology of it's products...

post #350 of 722

All the Stax tube amps are basically the same circuit, the 006t and 600 are identical save for the tube type and different setup due to that.  The 007t is the same except the output stage has been doubled up. 

 

Speaking of the 007t, I just acquired one and I'm going to modify it so it's as good as it ever could be.  Think mini BHSE while looking 100% stock... redface.gif

 

Quote:
Originally Posted by tdogzthmn View Post

What about the SRM-600 Limited?  Its a hybrid tube design and add a nice amount of warmth to my SR-507.  It might also be a good pair with the SR-009.

 

I'd stay away from that one as there have been far too many failures reported and all are due to the plate resistors. 

post #351 of 722
Quote:
Originally Posted by spritzer View Post

Speaking of the 007t, I just acquired one and I'm going to modify it so it's as good as it ever could be.  Think mini BHSE while looking 100% stock... redface.gif

 

Now, if you'll ever think of selling it (because you don't need need another amp, do you?) just let me know :-)

post #352 of 722

Spritzer-Thanks for the information about the SRM 600 Limited- This will be of use to UK owners as when speaking to a Stax agent in the UK he told me many people there had bought one as it "sounded good". It was at a UK price of [I think] £1600 less than the 727 -11 at nearly £2000.

post #353 of 722

Yep Dr. Spritzer, I'd be interested in your modded 007t also.

:-]

post #354 of 722
Quote:
Originally Posted by spritzer View Post

All the Stax tube amps are basically the same circuit, the 006t and 600 are identical save for the tube type and different setup due to that.  The 007t is the same except the output stage has been doubled up. 

 

Speaking of the 007t, I just acquired one and I'm going to modify it so it's as good as it ever could be.  Think mini BHSE while looking 100% stock... redface.gif

 

 

I'd stay away from that one as there have been far too many failures reported and all are due to the plate resistors. 

 

The original owner of the SRM-600 I own said he upgraded several of the internal components to prevent the common failures from occurring enhance the sonic performance.  I'm not sure the extent of the modifications but I can attest to it performing wonderfully with my SR-507.  I'd like to compare it to another amp at some point to gauge it's performance.

post #355 of 722
I've been using the 600ltd for more than 15 months with the 507, the 007 and the 009, and never had problems. It sounds good, at least to my ears. I like the 007tii a bit better but it's not night and day difference.
post #356 of 722
Quote:
Originally Posted by realmassy View Post

I've been using the 600ltd for more than 15 months with the 507, the 007 and the 009, and never had problems. It sounds good, at least to my ears. I like the 007tii a bit better but it's not night and day difference.

 

Do you find the SR-507 + SRM-600 combo to be bright or fatiguing?  I've not come across a single track in my music library where I find the the SR-507 to sound bright, thin, shrill or the like.  I hope to try the SR-009 on my amp at some point to hear how it differs from the 507.

post #357 of 722

yeah i'll be interested in that amp too spritzer.  Hated the two box design. BUT, Mini BHSE.. wow.. sounds like a dream come true to me. Let me know how much.

post #358 of 722
Quote:
Originally Posted by spritzer View Post

 

Speaking of the 007t, I just acquired one and I'm going to modify it so it's as good as it ever could be.  Think mini BHSE while looking 100% stock... redface.gif

 

 

 

 

The sides of the amp are going to be very friendly warm.

8 watts per side warm. could go as high as 10.

 

If you have seen the insides of an original T2, well its going to

look a lot like that.


Edited by kevin gilmore - 8/8/13 at 4:58pm
post #359 of 722
Quote:
Originally Posted by kevin gilmore View Post

If you have seen the insides of an original T2, well its going to

look a lot like that.

100% original?..all tube amps stax made were identical? had no idea Stax was putting T2 inside the 007T..am bummed i sold mine now.. :(  AND BUILT by Spritzer.. I WANT that amp!!! PM incoming shortly

post #360 of 722

Without going into further details what birgir is going to do is remove the resistive plate loads

and replace them with a T2 style current source. The overall power will remain roughly the same.

Where the heat goes will not remain the same. But he is also going to change the power tubes to

6s4's because with 4 tubes, this is an easy upgrade.

 

So its going to look like the insides of an original T2 with the wing boards.

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: High-end Audio Forum
Head-Fi.org › Forums › Summit-Fi (High-End Audio) › High-end Audio Forum › Question about amps for the Stax SR-009