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Speaker amps for headphones - Page 142

post #2116 of 3116
Quote:
Originally Posted by victorcc View Post
 

 

My experience is different, I could hear the hiss quite well after burning in and indepently of the recording. Of course, only during quiet (not only silent) moments of the music.

 

Cheers

 

Makes sense!

Burn in should have almost no effect on the hiss from the amp.

The hiss may drop a little after the amp has been on for half an hour, but that's about it.

post #2117 of 3116
Quote:
Originally Posted by Chris J View Post
 

 

Makes sense!

Burn in should have almost no effect on the hiss from the amp.

The hiss may drop a little after the amp has been on for half an hour, but that's about it.

I didn't think so, either, by my experience was different.  Hiss was dramatically reduced with burn in.  Frequency response was substantially altered in the first 50 hours of operation.  

post #2118 of 3116

If the FR was changing over time... I would send the amp back.

post #2119 of 3116
Quote:
Originally Posted by Armaegis View Post
 

If the FR was changing over time... I would send the amp back.

I did....

post #2120 of 3116
As I am not a fan of burn in I very much believe
In what I can hear every time and that is warmup
Time

As for noise floor speaker amps should not have any
But given we do not put our ears up to the speakers. But we do with headphones
So some amps do. Attenuation removes this and far cheaper than thousands on a headphone Amp
Just my thought s
Al
post #2121 of 3116
Quote:
Originally Posted by brunk View Post
 

Look at the last few pages of this thread :)

http://www.eevblog.com/forum/blog/changing-the-rigol-ds1052e-to-ds1102e-using-usb-the-dummy-guide/

Got my Rigol DS1052E oscilloscope today and did the 100MHz firmware upgrade. Very nice scope for the money, thanks for the tip.

post #2122 of 3116
Quote:
Originally Posted by robrob View Post
 

Got my Rigol DS1052E oscilloscope today and did the 100MHz firmware upgrade. Very nice scope for the money, thanks for the tip.

Wow you got yours before I have! Mine is expected between the 3-8th now :/

 

Anyways, I am glad to hear the hack works out as planned. Now, show me that sexy spectrum analyzer from Hackaday :)

 

I am also going to be getting my mitts on this sexy lab power supply soon. After exhaustive research, it turns out Rigol wins again. The best part is that it's a software-crippled version of the $800 unit, so it's just a matter of time until someone brute forces it and creates a keygen to unlock all the features. Plus, I think the UI on the cheaper model is much more intuitive too :D This is easily the most important piece of equipment to have high quality. What good does a Ebay PSU save you, when you fry a circuit and lose possibly weeks of time?

 

For a bench DMM, vintage HP/Agilent still takes the cake.

 

I am going to have a killer Hobby Lab very soon. I might take the plunge a 2-3 years down the road on a 200mhz+ 'scope, but no need to do it now because prices have been falling rapidly over the past 5 years.

 

Best,

Brunk

 

P.S. If you can't tell, I am one of those guys that likes to buy quality the first time around (cheaper that way too), and not have pile of hodge-podge stuff lying around.


Edited by brunk - 1/2/14 at 4:32pm
post #2123 of 3116
Wow brunk nice stuff. Great spect too. Cool
post #2124 of 3116
Quote:
Originally Posted by brunk View Post
 

Wow you got yours before I have! Mine is expected between the 3-8th now :/

 

Anyways, I am glad to hear the hack works out as planned. Now, show me that sexy spectrum analyzer from Hackaday :)

 

I am also going to be getting my mitts on this sexy lab power supply soon. After exhaustive research, it turns out Rigol wins again. The best part is that it's a software-crippled version of the $800 unit, so it's just a matter of time until someone brute forces it and creates a keygen to unlock all the features. Plus, I think the UI on the cheaper model is much more intuitive too :D This is easily the most important piece of equipment to have high quality. What good does a Ebay PSU save you, when you fry a circuit and lose possibly weeks of time?

 

For a bench DMM, vintage HP/Agilent still takes the cake.

 

I am going to have a killer Hobby Lab very soon. I might take the plunge a 2-3 years down the road on a 200mhz+ 'scope, but no need to do it now because prices have been falling rapidly over the past 5 years.

 

Best,

Brunk

 

P.S. If you can't tell, I am one of those guys that likes to buy quality the first time around (cheaper that way too), and not have pile of hodge-podge stuff lying around.

Yes you are, yes you are.  I totally agree about buying good kit the first time around.  Nice find on the power supply!

post #2125 of 3116
Quote:
Originally Posted by ALRAINBOW View Post

Wow brunk nice stuff. Great spect too. Cool

Thanks Al!

 

Quote:
Originally Posted by potterma View Post
 

Yes you are, yes you are.  I totally agree about buying good kit the first time around.  Nice find on the power supply!

Yeah, you definitely get what you pay for in regards to test equipment for the most part. Yeah that power supply is sweet! Have you seen the teardown video of that thing on their website? Wow!

post #2126 of 3116
You guys are lucky right now. 20 years ago devices like this were 10 k. Hi end electronics is soooooo. Cheap now .
post #2127 of 3116
Quote:
Originally Posted by ALRAINBOW View Post

You guys are lucky right now. 20 years ago devices like this were 10 k. Hi end electronics is soooooo. Cheap now .

Yes definitely. We are in a Golden Age for sure. I also have my eye on what used to be a $7k bench DMM back in the day for about 1/10th the price, fully certified and calibrated before shipping. Not telling though! :tongue:

post #2128 of 3116
Your place must be stacked and stacked with stuff man. . And how much caffeine do you drink just to stay up all night and play. Lol

Al
post #2129 of 3116
Quote:
Originally Posted by ALRAINBOW View Post

Your place must be stacked and stacked with stuff man. . And how much caffeine do you drink just to stay up all night and play. Lol

Al

LMAO I do have quite a bit of stuff here, but I keep very meticulous detail to having combo-type units, super compact storage of components in plastic baggies in cardboard boxes all labeled, etc. 

 

I drink about 1-.1.5 pots a day lol. No shortage of coffee at my place :tongue:

post #2130 of 3116
Lmao. I new it . God bless you man , youth if only had some of that now.

Al. D
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