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The HeadAmp GS-X and GS-X MK2 Thread - Page 5

post #61 of 3660
Quote:
Originally Posted by justin w. View Post

response:

 

 

So measuring the impedance of the gsx is not going to be so easy, i need a booster
amplifier for the signal generator because the gsx tests so low. At full blast on the generator
which is 20 volts peak to peak...
 
Here are preliminary numbers. single ended. 
 
At 10x gain, at 1khz, the output impedance is between .2 and .3 ohms
at 10x gain at 20khz the output impedance is between .4 and .5 ohms
 
at 1x gain at 1khz, the output impedance is less than .1 ohm
at 1x gain at 20khz the output impedance is less than .2 ohms
 
I can't put enough voltage into the back end of the resistor to accurately measure
the signal at the output of the gsx.
 
Measuring balanced is also not going to be so easy, i may use an isolation transformer
for this, but it almost has to be double the impedance above.

Thanks, Kevin and Justin! The new GS-X sounds like a beast!

post #62 of 3660

Can you confirm what transformers are going into this first run of the new GS-X?  I have conflicting values right now at 25VA and 35VA.

post #63 of 3660

It is official, I am on-board for this batch of GS-X!

Quite exciting to be making my first HeadAmp purchase.

post #64 of 3660
Quote:
Originally Posted by Solude View Post

Can you confirm what transformers are going into this first run of the new GS-X?  I have conflicting values right now at 25VA and 35VA.

 

 

What's the word on this?

post #65 of 3660
Quote:
Originally Posted by preproman View Post

 

 

What's the word on this?

 

they're 25VA per channel.  each channel uses about 10 watts

HeadAmp Audio Electronics - home of the Pico and Gilmore amps.  Now with Audeze, Fostex, HiFiMAN, Sennheiser, and STAX.
Find us at www.HeadAmp.com

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post #66 of 3660
Quote:
Originally Posted by justin w. View Post

 

they're 25VA per channel.  each channel uses about 10 watts

 

So are the 35VA going in the next run or something?

post #67 of 3660

No mixed signal in numbers and timelines caused that mix up.  Old model, prototype transformers... 15VA, new model, production transformers 25VA.  Sorry for confusing people.

post #68 of 3660

I changed my mind on colors, went from black/red led to silver/blue led.  Sticking with DACT.  The pictures of the silver faced BHSE's did me in considering the front panels are now coming polished.

 


Edited by Mr.Sneis - 11/6/12 at 1:57pm
post #69 of 3660

ok guess i'm doing the LEDs myself then.  having the circuit board people build the boards with the right vol ctrl AND the right LED color = not gonna happen.  

 

*throws new purple LEDs in the trash*

HeadAmp Audio Electronics - home of the Pico and Gilmore amps.  Now with Audeze, Fostex, HiFiMAN, Sennheiser, and STAX.
Find us at www.HeadAmp.com

Reply
post #70 of 3660

I don't think either situation is a good idea.  You send out 25 boards with different LEDs and then ask for 19 DACT, 6 Alpha and expect the pots to come back on the right LEDs... not likely.

post #71 of 3660

Will add, LED choice was never declared an option so... blue for everyone :p

 

post #72 of 3660

Never liked silver, but that looks amazing.

Quote:
Originally Posted by Mr.Sneis View Post

I changed my mind on colors, went from black/red led to silver/blue led.  Sticking with DACT.  The pictures of the silver faced BHSE's did me in considering the front panels are now coming polished.

 

post #73 of 3660

Has anyone been playing with opting for some of the more uncommon colors (other than black/silver)?

Although I don't see myself going for any of those options, it would be quite a treat to see some.

 

Similarly to what was just mentioned above, I have tried using some of the pictures from the BHSE thread to paint a picture in my mind.

Here are some of the pictures I enjoyed the most:

 

Blue anyone?

 

    

post #74 of 3660
What, almost 0.5 ohm of output impedance, disaster!! How am I going to drive my high efficiency 2ohm speakers through this thing??

Seriously, if I wasn't both feet englued in stat wonderland, I'd be having a serious look at this smily_headphones1.gif
post #75 of 3660
Quote:
Originally Posted by niten View Post

Has anyone been playing with opting for some of the more uncommon colors (other than black/silver)?
Although I don't see myself going for any of those options, it would be quite a treat to see some.

Similarly to what was just mentioned above, I have tried using some of the pictures from the BHSE thread to paint a picture in my mind.
Here are some of the pictures I enjoyed the most:

Blue anyone?
    

I'm in for the new GS-X also, but I opted for plain ol' boring black. As much as I love silver gear and would be curious to see a color like red, I'd rather have the faceplate match the rest of my gear. Plus it's more inconspicuous in my setup, so the WAF goes way up.
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