Rank: Member
Groups: Member
Joined: 3/14/2013(UTC) Posts: 16 Location: istanbul
|
hi,
I want to replace buffalo 32s opamp. It uses 2 single lme49710ma. Can you suggest any opamp model instead of these?
For example can I use opa1632 single opa?
|
|
|
|
Rank: Member
Groups: Member
Joined: 1/12/2009(UTC) Posts: 138 Location: London
Thanks: 15 times Was thanked: 1 time(s) in 1 post(s)
|
What's wrong with the existing ones?
|
|
|
|
Rank: Member
Groups: Member
Joined: 3/14/2013(UTC) Posts: 16 Location: istanbul
|
actually there is no problem. I want to try different sound character
muses 8920 is another candidate. It looks suitable
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 6/12/2008(UTC) Posts: 79 Location: Norway
|
OPA1632 is a differential inn/out chip, it has completely different pin-configuration and can not be used. I am sure the circuit is designed for the LME49710, and that it will work best with those. Other well regarded alternatives could be OPA1611 or LME49990. In my opinion OPAMP rolling is a bad idea. You will probably be better off leaving it as it is. It is also easy to destroy components and even the PCB when desoldering/resoldering.
|
|
|
|
Rank: Member
Groups: Member
Joined: 1/12/2009(UTC) Posts: 138 Location: London
Thanks: 15 times Was thanked: 1 time(s) in 1 post(s)
|
I would concur with steinholien. If there's no problem with it, I would leave it alone.
If you want a different sound, you'd have more success with different speakers or moving them. The listening room will also influence the sound to a large degree. You already have a very accurate DAC, tinkering with it will make no difference (or make it worse) unless you know more than Russ/Brian about DACs.
|
|
|
|
Rank: Member
Groups: Member
Joined: 2/4/2014(UTC) Posts: 42 Thanks: 6 times Was thanked: 3 time(s) in 3 post(s)
|
If you're sure you want to do it then solder a dip8 socket and try various opamps. I'd recommend starting with single opamps of LME family similar to the stock one you have so you don't have to worry about compatibility as much. I recently played with (dual) opamps in buffalo 3 and replaced stock LM4562NA with LME49860. Although many say they're all the same opamp (spec wise) - they sound quite different and 49860 resulted in less bright/forward sound with stronger bass and better resolution/transparency/soundstage. In LM family alone there should be enough versions to find the sound that will suite you. If you'll go for OPA is a more dangerous road because they're different from LM and you can't be 100% sure how they'll fit and perform in that circuit...
|
|
|
|
Rank: Administration
Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA
Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)
|
The LME49710 opamps on the Buffalo32s are acting as power buffers and are not (directly) handling audio signals.
I would recommend extreme caution in replacing them.
|
|
|
|
Rank: Member
Groups: Member
Joined: 4/28/2013(UTC) Posts: 55 Location: Auckland Thanks: 1 times Was thanked: 1 time(s) in 1 post(s)
|
My next step is to try the MUSES02, looks like it should work
|
|
|
|
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.