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Audio-GD NFB-12 - Page 28

post #406 of 2247

Do you think the NFB-12 and AKG K702 would be a good match?

 

Rated impedance 62 ohms
Max. input power 200 mW
post #407 of 2247


How is this 'getting ridiculous'? They never told you it would ship on Feb 15th; they told you it would not ship until Feb 15th.  That means on or after the 15th.  And that could very well mean March.  If you were not prepared to wait, perhaps you should not have ordered.

 

 

Quote:
Originally Posted by llama_egg View Post

Holy, this is getting ridiculous, placed my Order at the beginning of January figuring a month and a half wouldn't be too bad, but if your December order is getting pushed back it's likely that those slated for the February 15th date are going to get pushed into March.
 

Quote:
Originally Posted by movi View Post

just an FYI for those waiting. my order went in end of December, with an original ship date of Jan 28 at the latest. that has now been pushed back to late February delivery

post #408 of 2247
Quote:
Originally Posted by thuantran View Post

That's normal, as samples are cut of suddenly. With DirectSound, Windows has feature to add fading so you don't have that problem.


Ok, thanks. i wonder why I never got this with Creative Soundcard and ASIO tough.

 

 

Quote:
Originally Posted by Handberg View Post

Do you think the NFB-12 and AKG K702 would be a good match?

 

Rated impedance 62 ohms
Max. input power 200 mW


I'm wondering too what the best Headphone would be.

I was thinking about getting the HD600 but now I'm so sure. :/

 

Has anyone tested the NFB12 with HD600/Hd650 or anything else you can think of in the 250-500$ range? :D

post #409 of 2247
Quote:
Originally Posted by tlniec View Post



Quote:
Originally Posted by madwolf View Post
The Transistors used are marked C2240 and A970. I believe they are 2SC2240 and 2SA970. The same transistors are used in the amplifier as well as the power supply. 

 

I was trying to take out the PCB and found that the screw are soldered on. It would seem that it is not that easy to change a few component. 

I know how to remove that but needed a 60W or higher soldering iron to work with. 

 

I noted that there are 2 nos of TL072 OP AMP on the PCB wounder what this is for. 

They might be for DC servo as there is a 1004 resistor just beside it. But it seem there are 2 DC servo for each channel ?

  


Wait, what?  The screws are soldered on?  I would expect Audio-GD would use standard stainless steel fasteners, which are not solderable.  They may have grounding straps under the screwheads, which could be soldered... although that seems redundant, as clamping the clad areas of the circuit card to chassis would provide a sufficient chassis ground path.  Are you sure the screws aren't just retained by a locking mechanism (locking nut/patch, or possibly liquid-staking on the threads)?  Sorry to interject, it's just that I've really not seen solderable screws before (solderable rivets and pressed-in studs, sure - just not screws).  Just seems very unconventional.
 

 

See for yourself what they did, it is not only 1 but at least 6 or maybe even 8. I am sure it is not for grounding 
 

SolderNut.jpg

 

Some are at very hard to reach places, This one is just under the power connector. 

SolderedScrew.jpg

 

There is one on the other side of the power socket right in the corner. Which even for me to take photo is difficult. 

In fact almost all the corner ones are soldered. To solder this on the screw, would takes plenty of heat. 

 

Need at least 2 skills personal to remove this kind of locking mechanism. One to apply the heat and one to unscrew. 

post #410 of 2247

naw, just use a solder sucker or some solder wick.  It would remove the solder immediately.  1 person operation here.

post #411 of 2247

Yes, because I definitely said that I wasn't prepared to wait. What I'm getting at is the company has on multiple occasions given people actual dates (if I'm remembering correctly) and have not met them, they seem to constantly go over the date their shooting for instead of meeting it. Delays do happen, I've been part of the tech world long enough to have a good understanding of that, trust me, but these delays are not surprises , it's not like Christmas, Chinese New Years, and the upcoming holiday they're having in February came out of nowhere. If they've had other delays the definitely don't mention them from what I've seen.

 

I would much prefer them go out and say "We're aiming to get them released around [Date X], but chances are that they'll won't be finished for a couple months after that due too [Reason]." It's about letting people know what's going on.
 

Quote:
Originally Posted by treaves View Post


How is this 'getting ridiculous'? They never told you it would ship on Feb 15th; they told you it would not ship until Feb 15th.  That means on or after the 15th.  And that could very well mean March.  If you were not prepared to wait, perhaps you should not have ordered.

post #412 of 2247
Thread Starter 

You can read all my reviews over the past 3 pages for my HD580 which will apply to the HD600 as well.
 

Quote:
Originally Posted by Wen-Li View Post

I'm wondering too what the best Headphone would be.

I was thinking about getting the HD600 but now I'm so sure. :/

 

Has anyone tested the NFB12 with HD600/Hd650 or anything else you can think of in the 250-500$ range? :D

post #413 of 2247
Quote:
Originally Posted by madwolf View Post

The Transistors used are marked C2240 and A970. I believe they are 2SC2240 and 2SA970. The same transistors are used in the amplifier as well as the power supply. 

 

I was trying to take out the PCB and found that the screw are soldered on. It would seem that it is not that easy to change a few component. 

I know how to remove that but needed a 60W or higher soldering iron to work with. 

 

I noted that there are 2 nos of TL072 OP AMP on the PCB wounder what this is for. 

They might be for DC servo as there is a 1004 resistor just beside it. But it seem there are 2 DC servo for each channel ?

 

Thanks for the transistor parts!  They are nice audio transistors.  You might be able to unscrew the PCB from under the case, leaving the standoffs with the PCB.

 

TL072 is a double opamp, so you would only need 1 for DC servo, 2 channels on 1 opamp.  If it's a TL071, then yes, there would be 2.  You would need to trace the circuit to find out what it's for.  A servo is necessary, IMO.  I wouldn't run a diamond buffer in complete open loop.

post #414 of 2247

Would soldering the screws even accomplish anything? I'm having a hard time wrapping my head around that one, so maybe I'm just missing something?

post #415 of 2247

Quote:
Originally Posted by llama_egg View Post

Would soldering the screws even accomplish anything? I'm having a hard time wrapping my head around that one, so maybe I'm just missing something?



They want the removal from the underside, not the top.  So, yes, it accomplishes something.

post #416 of 2247
Quote:
Originally Posted by llama_egg View Post

Yes, because I definitely said that I wasn't prepared to wait. What I'm getting at is the company has on multiple occasions given people actual dates (if I'm remembering correctly) and have not met them, they seem to constantly go over the date their shooting for instead of meeting it. Delays do happen, I've been part of the tech world long enough to have a good understanding of that, trust me, but these delays are not surprises , it's not like Christmas, Chinese New Years, and the upcoming holiday they're having in February came out of nowhere. If they've had other delays the definitely don't mention them from what I've seen.

 

I would much prefer them go out and say "We're aiming to get them released around [Date X], but chances are that they'll won't be finished for a couple months after that due too [Reason]." It's about letting people know what's going on.
 

Quote:
Originally Posted by treaves View Post


How is this 'getting ridiculous'? They never told you it would ship on Feb 15th; they told you it would not ship until Feb 15th.  That means on or after the 15th.  And that could very well mean March.  If you were not prepared to wait, perhaps you should not have ordered.


If you really had an understanding about delays then you'd realize holidays aren't the only things that can contribute to your NFB-12 being delayed and ruining your life. Did you consider they might be short staffed for all their orders? Parts shortages? Unexpected things like someone stealing all the volume knobs? Other surprises like the easter bunny popping out of the closet and having a crazy party with the audio-gd staff.

 

It's not the end of the world that these NFB-12's  are delayed so relax and find something more useful to do than complain about a handmade product that was for the most part made to order, that has been delayed.

 

 

 

post #417 of 2247

For those of you who are bothered by the long wait time, just email Kingwa and ask for refund. I did it and Kingwa refunded my money in less than 3 hours.

 

But after a few days, I changed my mind and placed an order for NFB-12 again redface.gif

post #418 of 2247

Man I don't know whether I should just buy an Audinst now, or suck it up and wait for like a month for an NFB-12... what should I doooo...

post #419 of 2247
Quote:
Originally Posted by bleho View Post

what should I doooo...



PM me.  I will tell you what to do, but my advice costs $20,000 USD.

post #420 of 2247

 

Quote:
Originally Posted by holland View Post



Quote:
Originally Posted by bleho View Post

what should I doooo...



PM me.  I will tell you what to do, but my advice costs $20,000 USD.


Lol wait what I'm confused

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