[PinkLed]

   
Sorry - that's my error which has continued through my posts and others'
 
 
Correct. There is a a small indented dot on the top of the SOIC chip which should be aligned in the same direction as the dot on the adapter (as you have circled). The indent can be hard to see without a good light source. When installing the adapters into the E12DIY, there is a white square around one of the pins (see back left corners of adapters in the picture a few posts up) which should be at the end with the groove in the socket.

Much appreciated, I hope this post helps others looking to use the HA5002. Mouser has them backordered for 10 weeks now unfortunately. They have over 7000 on order!

 

[ClieOS]

  Much appreciated, I hope this post helps others looking to use the HA5002. Mouser has them backordered for 10 weeks now unfortunately. They have over 7000 on order!

 
As I have said two weeks ago:
 
 

   
Cancel the HA-5002 order from Mouser and get it from RS Components instead, readily stock and cheaper price too (they run under alliedelec.com in the US). Element14 (newark.com) and digikey.com also carry stock.

 

[PinkLed]

 

Just reordered them from digikey.com. They seem to be the only ones that have them available in stock for immediate shipment for anyone looking to get them now. Thank you ClieOS.

 

[Deterministic NL]

   
Sorry - that's my error which has continued through my posts and others'
 
 
Correct. There is a a small indented dot on the top of the SOIC chip which should be aligned in the same direction as the dot on the adapter (as you have circled). The indent can be hard to see without a good light source. When installing the adapters into the E12DIY, there is a white square around one of the pins (see back left corners of adapters in the picture a few posts up) which should be at the end with the groove in the socket.

I'm trying to map this out in my brain.  Wouldn't you have to bend every pin to flip the chip upside down on the bottom?  Does anyone have a picture of one soldered on the bottom of the board?

 

[Loquah]

  I'm trying to map this out in my brain.  Wouldn't you have to bend every pin to flip the chip upside down on the bottom?  Does anyone have a picture of one soldered on the bottom of the board?

LOL. No, there are a separate set of contacts on the bottom of the Brown Dog adapter so you just lay it down with the pins facing up and solder the chip in place the same as you would on top of the adapter.
 

 

[Deterministic NL]

 
LOL. No, there are a separate set of contacts on the bottom of the Brown Dog adapter so you just lay it down with the pins facing up and solder the chip in place the same as you would on top of the adapter.
 

You misunderstood my question I think a little but I probably wasn't clear.  I figured it out after looking at it on paper a thousand times. I'm debating on whether to go this route or not and wanted to get it all straight in my mind.  The adapter maps the pins out on the bottom to the top.  Pin one on top isn't pin one on the bottom.  That's where the bulk of my confusion came from. Thanks.  
 
John

 

[JamesFiiO]

some news share with you guys. we are considering to make a E12IEM version for IEM user. cause the output power of E12 is too high and the hiss is a little bigger too. so we will develop a E12IEM
 
which is based on E12DIY, and we will use MUSES02+LME49600.

 

[Deterministic NL]

  some news share with you guys. we are considering to make a E12IEM version for IEM user. cause the output power of E12 is too high and the hiss is a little bigger too. so we will develop a E12IEM
 
which is based on E12DIY, and we will use MUSES02+LME49600.

I'm not an IEM guy but I do love my E12DIY.  Best concept in portable audio EVER.  You guys are on to something going along these lines. My co-worker liked my E12DIY so much he ordered an E12 Mont Blanc and he's not even remotely a headphone guy.

 

[Loquah]

  some news share with you guys. we are considering to make a E12IEM version for IEM user. cause the output power of E12 is too high and the hiss is a little bigger too. so we will develop a E12IEM
 
which is based on E12DIY, and we will use MUSES02+LME49600.

 
SOLD!! I would love that, James, as would many others I think.

 

[MistahBungle]

Hell yes I'd be interested in one of those (my wallet won't like it much though)

 

[ClieOS]

  You misunderstood my question I think a little but I probably wasn't clear.  I figured it out after looking at it on paper a thousand times. I'm debating on whether to go this route or not and wanted to get it all straight in my mind.  The adapter maps the pins out on the bottom to the top.  Pin one on top isn't pin one on the bottom.  That's where the bulk of my confusion came from. Thanks.  
 
John

 
You should solder following the marking on the adapter, whichever side you are on. Don't worry about which one is pin 1 on the adapter - just follow the marking and you will be fine.
 

 
The red arrows are the marking of where the pin 1 (of the buffer) should be when you are soldering. As long as the you soldering correctly as the marking tells you so, it does NOT matter where the pin 1 (blue) of the adapter is. The adapter + chip as a whole will always works correctly, as it is designed as such.

 

[ClieOS]

  some news share with you guys. we are considering to make a E12IEM version for IEM user. cause the output power of E12 is too high and the hiss is a little bigger too. so we will develop a E12IEM
 
which is based on E12DIY, and we will use MUSES02+LME49600.

 
Cool. I'll suggest, since this is designed for IEM, that the gain setting should be +3dB and -6dB (just an example). A negative gain can be very useful on strong input signal, such as 2Vrms.

 

[JamesFiiO]

   
Cool. I'll suggest, since this is designed for IEM, that the gain setting should be +3dB and -6dB (just an example). A negative gain can be very useful on strong input signal, such as 2Vrms.

 
1, Yes, the gain may change to -3dB and +6dB.
 
2, The power supply may change to +/- 7.4V . but not decided yet cause the high power supply can provide better SQ.
 
3, The bass and crossfeed will be removed.

 

[PinkLed]

   

Very cool james! I have to say though my triple fi 10 sound great with the E12DIY. The hiss only exists on high gain. Maybe because having three drivers the TF10s require more output? I do not know.

 

[nmatheis]

some news share with you guys. we are considering to make a E12IEM version for IEM user. cause the output power of E12 is too high and the hiss is a little bigger too. so we will develop a E12IEM

which is based on E12DIY, and we will use MUSES02+LME49600.

Good idea, James!

Cool. I'll suggest, since this is designed for IEM, that the gain setting should be +3dB and -6dB (just an example). A negative gain can be very useful on strong input signal, such as 2Vrms.

Great suggestion, ClieOS!