Rank: Member
Groups: Member
Joined: 4/6/2009(UTC)
Posts: 12
Location: Oslo, Norway
|
Hello again!
I see on the schematic for the IVY III that you are gaining the signal quite a bit up in the feedback circuitry at the first differential OP AMP (the I/V conversion stage), before the low pass filter, and then gaining down again accordingly at the second differential OP AMP. I was wondering if there is a particular thought or design philosophy behind this solution? ...
I got it up and running with the latest Buffalo, and it sounds outstanding! (Thanks).
with best regards from
audiophile, Oslo, Norway
|
|
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN
Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
|
Basically the cct was design for the best possible dynamic range.
By utilizing more gain on the front end we don't swamp the inputs, and we allow less noise to pass.
After filtering the next stage simply gets it back to ~2VRMS at 0db.
I won't get into it any deeper than that.
Cheers!
Russ
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 4/6/2009(UTC)
Posts: 12
Location: Oslo, Norway
|
Thanks for good answer! Suppressing the input noise by improving the signal/noise ratio and thus increasing the dynamic range makes perfect sense to me... Should've thought it out myself instead of asking, but thanks anyhow for allaying my curiosity! audiophile Edited by user Saturday, July 17, 2010 6:24:18 AM(UTC)
| Reason: Not specified
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
