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HE-500, LCD2, D5000, DT770, SR80, on a speaker amp (Emotiva mini-X A-100) Project - Page 107

post #1591 of 3496

Nice work!  I just finished doing the same, but with a 4-pin XLR in my old Carver M200t.  Looking at your pics, the XLR would have to move left and would probably require a cut out in the (I-want-to-be-a-rack-mount-amp) plate-thing.  Doable, but might not look very clean.

post #1592 of 3496
Quote:
Originally Posted by potterma View Post

Nice work!  I just finished doing the same, but with a 4-pin XLR in my old Carver M200t.  Looking at your pics, the XLR would have to move left and would probably require a cut out in the (I-want-to-be-a-rack-mount-amp) plate-thing.  Doable, but might not look very clean.

 

You got it dead on! wink.gif

post #1593 of 3496

Alrighty so I've picked up some 500ohm and 300 ohm resistors and I'll be messing around with them to see when the noise floor is present for various headphones. I'll report back then. 

post #1594 of 3496
Quote:
Originally Posted by elwappo99 View Post

Alrighty so I've picked up some 500ohm and 300 ohm resistors and I'll be messing around with them to see when the noise floor is present for various headphones. I'll report back then. 

Excited to read your findings.
post #1595 of 3496
Quote:
Originally Posted by elwappo99 View Post

Alrighty so I've picked up some 500ohm and 300 ohm resistors and I'll be messing around with them to see when the noise floor is present for various headphones. I'll report back then. 

popcorn.gif (Did you pick them up from BTG Audio?)

post #1596 of 3496
Quote:
Originally Posted by Kamakahah View Post

Excited to read your findings.

 

Quote:
Originally Posted by M-13 View Post
popcorn.gif (Did you pick them up from BTG Audio?)

 

Picked them up from Mouser. I'm hoping to find a good formula for resistors and then doing something like Koiloco and have a sweet little headamp here. 

 

After looking into one of the larger Neutrik locking 1/4" TRS (same as XLR), I decided to go the route of Koiloco. The smaller ones don't look as nice, but drilling the hole will be much much easier. 

post #1597 of 3496
Quote:
Originally Posted by elwappo99 View Post

 

 

Picked them up from Mouser. I'm hoping to find a good formula for resistors and then doing something like Koiloco and have a sweet little headamp here. 

 

After looking into one of the larger Neutrik locking 1/4" TRS (same as XLR), I decided to go the route of Koiloco. The smaller ones don't look as nice, but drilling the hole will be much much easier. 

Yeah, I'm sure the locking Neutrik panel mount sockets will work, but they're not perfectly round so getting it to fit in would be a little tricky.  Definitely much easier with a thinner plate as I've found.  Mouser FTW!  There are some good resources earlier in the thread for attenuator formulas.

post #1598 of 3496
Quote:
Originally Posted by elwappo99 View Post

 

 

Picked them up from Mouser. I'm hoping to find a good formula for resistors and then doing something like Koiloco and have a sweet little headamp here. 

 

After looking into one of the larger Neutrik locking 1/4" TRS (same as XLR), I decided to go the route of Koiloco. The smaller ones don't look as nice, but drilling the hole will be much much easier. 

What topology did you go with for the resistors?  Metal film? inductive wirewound? "non-inductive" wirewound?

 

The Neutrik connectors work very well.  A bit of a pain to install.  Cutting (or filing, in my case) slots for the ribs and locking mechanism boss is a bit time consuming when hand fitting.  CNC mill or punch would be nice :)

post #1599 of 3496
Better don't use such high value resistors if you want a reasonable damping factor.
post #1600 of 3496
I mostly understand the science. I remember my physics courses well enough, but I'd love to see an explanation and pictures of how to physically make the adapter and what materials are best.
post #1601 of 3496
Quote:
Originally Posted by Kamakahah View Post

I mostly understand the science. I remember my physics courses well enough, but I'd love to see an explanation and pictures of how to physically make the adapter and what materials are best.

 

 

I posted a couple of pics (and a link to a couple more) of one way to do it over here: Speaker amps for headphones - Page 28

 

There are pics of other ways to do an adapter in that thread, as well.

post #1602 of 3496

D'oh, there was a local sale for a Mini-X that I just missed out on. I was thinking to grab it purely to write up a comparison vs my other small desktop amps (Nuforce Icon, STA-100, and Dacmini PX), but I was too late. Maybe I should ask to just borrow it for a day or two before he ships it off... 

post #1603 of 3496
Quote:
Originally Posted by koiloco View Post

As promised, I have decided to keep the Emotiva so here it is with 1/4 plug.  No more banana plugs for now.  biggrin.gif

 

 

Buy, Mod & Sell. Then repeat
post #1604 of 3496
Quote:
Originally Posted by kazsud View Post

 

Buy, Mod & Sell. Then repeat


lol kazsud, thx for the suggestion.  Between work, family and other hobbies, I can barely manage to get mine done.  I am however willing to help out head-fiers in anyway possible.

post #1605 of 3496

Ahh didn't realise it was finished. Nice work Koiloco. As if it were factory made. So how does it 1/4" jack compare to speaker taps?

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