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opamp for mini3~~~!

post #1 of 34
3/26/11 at 8:00am
Thread Starter 

i've just finished my mini3 and wonder what opamp should i use for my music ( mostly vocal and violin, sometimes symphonic metal ).

PLz recommend some opamp ( i'm currently looking into burrbrown's products).

Thx in advance !! :D

 

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post #2 of 34
3/26/11 at 8:19am

I assume you're referring to the AMB Mini³?

 

AMB's instructions state the op-amps should be soldered to the PCB before any other components. This is to allow maximum ease of access to the pins. Soldering in the op-amps after all other components is harder, but not impossible.

 

AMB's instructions only recommend two op-amp combinations, one makes up the 'high-performance' edition and the other is the 'extended run-time' version. The difference is current draw and output. I personally went for the high-performance edition.


Edited by jr41 - 3/26/11 at 8:27am
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post #3 of 34
3/26/11 at 8:38am
Thread Starter 

AMB mini3 that's wat i mean :D 

And i use the socket  to make it easier  swapping opamp :D 

But i don't know which opamp should i use for my gerne :)

 

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post #4 of 34
3/26/11 at 8:52am

The PCB mounts for the op-amps in the mini³ are surface mount, I was not aware you can get adapters for surface mount op-amps?

 

Also, I understand issues can arise if component lead lengths are too long. Something to do with inductance? This goes beyond my understanding though.

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post #5 of 34
3/26/11 at 9:31am

I wouldn't bother with pin lengths if they are not too long. It's not a RF aplication after all.


Edited by akgfan - 3/26/11 at 9:32am
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post #6 of 34
3/26/11 at 9:49am
Thread Starter 

i've change the pcb a little bit so that i can solder the socket instead of the surface mount opamp :)

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post #7 of 34
3/26/11 at 9:58am
Quote:
Originally Posted by tetracilin View Post

i've just finished my mini3 and wonder what opamp should i use for my music ( mostly vocal and violin, sometimes symphonic metal ).

PLz recommend some opamp ( i'm currently looking into burrbrown's products).

Thx in advance !! :D

 


ad8559 in signal, opa690 in ground wink.gif

 

i had this combination for quite some time before changing to hi performance edition. simply because vocal is not my main genre.

 


Edited by i_djoel2000 - 3/26/11 at 9:59am
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post #8 of 34
3/26/11 at 10:39am

I would love to see some photos of your modification.

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post #9 of 34
3/26/11 at 3:13pm
Quote:
Originally Posted by jr41 View Post

I would love to see some photos of your modification.



I would ALSO like to see photos!

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post #10 of 34
3/26/11 at 8:34pm
Thread Starter 

i'd love to but sry guys no camera :( unless u want some pics from a 2.3megapixels camera :|

Btw thx for the suggestion :D

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post #11 of 34
3/26/11 at 8:41pm
Thread Starter 
Quote:
Originally Posted by i_djoel2000 View Post




ad8559 in signal, opa690 in ground wink.gif

 

i had this combination for quite some time before changing to hi performance edition. simply because vocal is not my main genre.

 


I can't find ad8559 opamp on the internet. would u mind giving me the link to it ? :)   thx

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post #12 of 34
3/27/11 at 4:51am

have you even tried the AD8397? it really is a very good little amp with the recommended opamp.

 

i remember reading a post by amb stating that the Mini3 is no longer really a Mini3 once other opamps are substituted.

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post #13 of 34
3/27/11 at 6:10am
Not to mention that the AD8397 is capable of outputting much more current than most other opamps.
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post #14 of 34
3/27/11 at 6:36am
Thread Starter 

ad8397 sounds great :D 

i will get a pair and make a test :D 

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post #15 of 34
3/27/11 at 7:02am
Quote:
Originally Posted by forsakenrider View Post





I would ALSO like to see photos!



Photos please!

 

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