preamp help w/ critique

impsick · 15th October 2007, 02:39 PM

ok, i need some major critique on this mic pre i laid out. My main concerns would have to be my ground planes. its a double sided board and in a sense maid 2 different planes that come together at one point. (top plane, and botton layer plane) Is that a bad idea? Could or would this cause problems? also my other concern is my discrete buffer section, after the pot and before the line driver. Not sure if i laid out that part correctly or not.

about the pre: its basically a mic pre that is based around the INA217, but can be used with THAT1512, 1510, and SSM2019 with little or no mod. Nothing to it really, very simple but i dont know enough to design something great. I've been slowly trying to get this to a point to where it would be worth it to get a few boards made.

Gordy · 16th October 2007, 11:01 AM

I think people may be confused by the lack of circuit / schematic attached to your post.

Do you mean this one?
http://www.audiosquare.com/A1mic%20pre.html

Perhaps a post of the schematic first might be an idea, so folk can see what you are trying to achieve.

15th October 2007, 02:39 PM	#1
impsick diyAudio Member Join Date: Dec 2006	preamp help w/ critique ok, i need some major critique on this mic pre i laid out. My main concerns would have to be my ground planes. its a double sided board and in a sense maid 2 different planes that come together at one point. (top plane, and botton layer plane) Is that a bad idea? Could or would this cause problems? also my other concern is my discrete buffer section, after the pot and before the line driver. Not sure if i laid out that part correctly or not. about the pre: its basically a mic pre that is based around the INA217, but can be used with THAT1512, 1510, and SSM2019 with little or no mod. Nothing to it really, very simple but i dont know enough to design something great. I've been slowly trying to get this to a point to where it would be worth it to get a few boards made. __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1

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16th October 2007, 11:01 AM	#2
Gordy diyAudio Member Join Date: Nov 2006	I think people may be confused by the lack of circuit / schematic attached to your post. Do you mean this one? http://www.audiosquare.com/A1mic%20pre.html Perhaps a post of the schematic first might be an idea, so folk can see what you are trying to achieve.

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