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AK100 22Ohm Bypass DIY - Page 2

post #16 of 33

Hi

 

im interested in doing this DIY mod but does anyone knows the exact points to solder?

post #17 of 33
Just follow the first photo from Kimvictor. Note the two resistors were shorted by solder in the red circles.
post #18 of 33
Thread Starter 
Quote:
Originally Posted by vincent199188 View Post

Hi

 

im interested in doing this DIY mod but does anyone knows the exact points to solder?

It's kind of hard to tell the directions, isn't it? But the two resistors should be fairly obvious if you open up your ak100 at look closely at it.

post #19 of 33

open up with caution though..i used the wrong screwdriver ( a size to small) and wore the threading on the screws , now its kind of an eye sore... so im looking for spare screws like the one found on the ak100... 

post #20 of 33
Thread Starter 
Quote:
Originally Posted by Nukeshock View Post

open up with caution though..i used the wrong screwdriver ( a size to small) and wore the threading on the screws , now its kind of an eye sore... so im looking for spare screws like the one found on the ak100... 

You should have used Torx T4 screwdriver. Anyways, why not contact iriver about replacement screws?

post #21 of 33

subbing to this thread for future updates :)

post #22 of 33
Thread Starter 

I'm just mentioning this, but 22ohm of AK100 doesn't affect every iems. The ones that are likely to be affected are multi BA driver iems that has non linear impedance characteristics. For example, my MDR7550 and H-200 is not affected by the 22ohm, but my UERM is affected. Just owning an iem doesn't mean you should do this mod. So far, I'm very happy with my AK100 unmodded with MDR7550. With UERM, I just use an amp.

post #23 of 33

If I understand correctly, you should have about 0 Ohm instead of 22 Ohm and you do that by adding an extra path with about 0 Ohm resistance. You could do this cleaner by replacing the 22 Ohm resistors with 0 Ohm resistors, they exist.

post #24 of 33
Thread Starter 
Quote:
Originally Posted by s0lar View Post
 

If I understand correctly, you should have about 0 Ohm instead of 22 Ohm and you do that by adding an extra path with about 0 Ohm resistance. You could do this cleaner by replacing the 22 Ohm resistors with 0 Ohm resistors, they exist.

 

Well, can't we just bypass them? Won't that be cleaner than having another resistor?

post #25 of 33
Quote:
Originally Posted by kimvictor View Post
 

 

Well, can't we just bypass them? Won't that be cleaner than having another resistor?

You can bypass of course but then you either take them out and put in a wire or solder an extra wire in parallel. Replacing the resistor by desoldering it and putting in a 0 OHM resistor is the cleanest way, the way I see it.

I don't own a AK100 and have no idea how easy it is to open it up but it's pretty straightforward.

I have (de)soldered smaller parts.

post #26 of 33

Just saying Guys , i tried to re do the mod , cuz i felt the soldering wasnt done proper , so when i did it again i burnt through the PCB...had to send it to iriver for fixing i just got the bill $340 repair , excluding shipping... 

post #27 of 33
Quote:
Originally Posted by Nukeshock View Post
 

Just saying Guys , i tried to re do the mod , cuz i felt the soldering wasnt done proper , so when i did it again i burnt through the PCB...had to send it to iriver for fixing i just got the bill $340 repair , excluding shipping...

 

Sorry to hear that. Did you just added solder on the resistor or used a wire or replaced the resistor with a zero Ohm?

If you just added solder, the risks are bigger because you can easily heat p the whole PCB. By desoldering the original resistor and putting a zero Ohm in its place or adding a wire, those risks are minor.

post #28 of 33
Thread Starter 
Quote:
Originally Posted by Nukeshock View Post
 

Just saying Guys , i tried to re do the mod , cuz i felt the soldering wasnt done proper , so when i did it again i burnt through the PCB...had to send it to iriver for fixing i just got the bill $340 repair , excluding shipping... 

 

Sorry to hear that. But at least iRiver decided to fix it.

post #29 of 33
Thread Starter 

Late update, but I got mine modded by RWA. I'm happy so far.

post #30 of 33

Can someone tell me which is the headphone output pin where I have to solder. Thanks

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