spaceludwig
Well-known member
- Joined
- Jul 14, 2011
- Messages
- 186
Question for the pros...
I would like to build a stereo mic pre based on the Neve IC pre found on the JLM audio website. I modified the design slightly years ago (even had a thread on the old website) and would be happy to post the schematic once I complete the layout.
Since I need to amplify a stereo microphone I would need to build 2 channels. My question is the following: Other than cost, space, part count, and current draw are there any reasons to use 2 single opamps rather than just one dual opamp (i.e. two 5534 vs one 5532)? Is there a risk of additional noise entering either signal - or anything else that would degrade audio quality or functionality - when using a dual opamp?
My apologies in advance if this is a silly question, I am not knowledgeable enough to figure this one out. I have breadboarded one channel and it sounds fine to my ears. Any info/advice/suggestions would be much appreciated.
Cheers!
EDIT: Attached is one channel of schematic. Amplification stage based on JLM's hybrid opamp. Could not find symbol for DRV134 balanced driver so made my own which is admittedly very crappy but I've never used schematic program so my first attempt.
I would like to build a stereo mic pre based on the Neve IC pre found on the JLM audio website. I modified the design slightly years ago (even had a thread on the old website) and would be happy to post the schematic once I complete the layout.
Since I need to amplify a stereo microphone I would need to build 2 channels. My question is the following: Other than cost, space, part count, and current draw are there any reasons to use 2 single opamps rather than just one dual opamp (i.e. two 5534 vs one 5532)? Is there a risk of additional noise entering either signal - or anything else that would degrade audio quality or functionality - when using a dual opamp?
My apologies in advance if this is a silly question, I am not knowledgeable enough to figure this one out. I have breadboarded one channel and it sounds fine to my ears. Any info/advice/suggestions would be much appreciated.
Cheers!
EDIT: Attached is one channel of schematic. Amplification stage based on JLM's hybrid opamp. Could not find symbol for DRV134 balanced driver so made my own which is admittedly very crappy but I've never used schematic program so my first attempt.