jasonhanjk

I work in Jurong east. Can meet up at Jurong east after work.

10uF Have you tried with other cap? Try playing around with a few values. Here is the link to the datasheet to LM6181. Read the datasheet first and confirm whether are their pinout the same. http://cache.national.com/ds/LM/LM6181.pdf I try not to spoon feed you too much. For you board problem, what do you use as source and what is your headphone?

I believe it's their taxes.

Sales over.

Yup, increasing the cap value will improve bass performance. Elec cap can do also, face the positive towards the pot.

To me, they are the same. To others, maybe different 'cos they can hear the difference.

Wait a minute. Do you use the soundcard from the PC as source and power from the PC at the same time? That could cause the problem. Try to use the 12V from the PC but this time use another source like an MP3 player.

Hi Matt. Good job on the soldering. When you use 9V does the amp work well? Is you 12V supply regulated DC? If you want to check whether the pot is working, short the 2 pin circle in red in the picture. Using a mp3 player headphone out (or line out) and slowly increase the volume. What do you hear?

Yup, you should still able to use those jacks. The way to test it is in the first thread. Yes, it act as ground for left and right. The pointing does not mean anything significant, just means they are connected. Does the crap sound sounds terrible or just not up to par with other high end gear? If you want to replace the IC, please do read thru the datasheet first.

To increse the gain, increase the value of R2 and R6. You can try 30k. Kube, did you try to use a flux cleaner to clean the board?

The HP is reserved.

Agree with you Rameish. Newer technology boast longer playback time but inside actually uses lower power headphone driver. Also, they uses very efficient earphone. Further reduces power consumption. A marketing hype for consumer electronics. BTW, I uses Zen Micro without the amp to drive my Grados.

Ego also play a part. If you can get your hand on a $1000 piece of headphone. You sure feel good.

Please help to delete. Thanks mod. Sold 1 headphone DT831. Good condition, come with box. Got from Mackie at S$180. Now letting it go at S$150. DT831 review: http://www.sgheadphones.net/index.php?showtopic=1371 Picture: Withdrawn 1 CDP MF A3CD. Good condition, no box, small mod at the back from previous seller. Come with remote control. Selling for S$900. Picture:

Yar lol... See how... Need to belanja Mackie when at the meet, I owe him one.

Hmm. I didn't know the new version doesn't have pricing anymore. The good thing about the paper catalogue is they have a more precise picture than the online one.

Should be able to but have not try it out. You got both Cmoy2 board and TLE2426? I give you tips how to mock up.

After reading the article. It's bassically a 3 channel output amp. It's THD is less than 0.2% but can be lower as their samples is more than 20kHz (human hearing). Uses a buf634 and FET output??? You need to tell the seller which headphone that you're you using so that he can match the internal of it. Normal version RMB $358 and high end version RMB $458.

YGPM.

Of course. If it's too big than you need a bigger enclosure.

You have to pre-order a day earlier. They have catalogues on their front desk.

Here's how you should calculate: Led need 3V. 9V-3V=6V Led need around 5mA: 0.005A=6V/R R=1200 ohm Power rating for resistor: I x I x R= 0.03W A quarter watt will suffice. Your resistor value are correct. Since you guys kept asking me the same question of the first page, seems that I need to furhter tidy up.

You mean remove the LM6171 and replace with a rail splitter?

Hmmm. Maybe, but first. Let's see the front and back of the picture of your Cmoy2.

You can get the film resistor from SLT. Hammond and Opamp can get at Farnell. More details on first page. You should get those high end components when you mess around with M cube.