Another Super High End Phono Stage! No expense spared...
- Thread starter Fasterdamnit
- Start date
Fasterdamnit
Super Member
YES!!!
Put them in backwards and they will be cooked. The notch in the socket needs to match the notch in the op-amp. :thmbsp:
Fasterdamnit
Super Member
Only stupid if it isn't asked. Good catch! I have fried my share of chips plugging them in backwards. :yes:
apurcell22
Well-Known Member
I agree. Stupid is not asking questions! Have fun with your build.
Al
Al
Thanks for the quick response Faster. I had the board all populated and was getting the power and in and out ready to finish up when I got to thinking about the op amps. Didn't seem right that they would be able to go either way.
I guess it wasn't a stupid question, just seemed like it at the time. I always tell our customers that the only stupid questions are the ones they don't ask.
I guess it wasn't a stupid question, just seemed like it at the time. I always tell our customers that the only stupid questions are the ones they don't ask.
Fasterdamnit
Super Member
No sweat.
It is always a good idea to power up the board with no chips in and check for +/- power at the sockets.
I was running that same cart with the 62K loading and it sounded great, in fact I'm going to put it back on because I like it better than the AT12Sa I've been trying.
I got the CNC together and in the system singing on Mon eve. OK, I know the TC750?? pre I have been using is not top shelf stuff but it has bested several onboard pre's I have put it up against.
After about 2-3 hours of listening to the CNC all I can say is HOLY SHEET! The difference is not subtle. Bigger, thicker sound all around. Smoother with more detail especially in the mids. I'm using less attenuation of the frequencies that bother my ears because they are so much smoother. More space around each instrument. I could go on. BTW I am using the opa2134 chips now and have the ad823 to try also.
Another big thanks to all who have made my mid life crisis back into audio so much fun. If I didn't dislike that stupid dancing banana so much I'd stick one in here.
After about 2-3 hours of listening to the CNC all I can say is HOLY SHEET! The difference is not subtle. Bigger, thicker sound all around. Smoother with more detail especially in the mids. I'm using less attenuation of the frequencies that bother my ears because they are so much smoother. More space around each instrument. I could go on. BTW I am using the opa2134 chips now and have the ad823 to try also.
Another big thanks to all who have made my mid life crisis back into audio so much fun. If I didn't dislike that stupid dancing banana so much I'd stick one in here.
This kind of thing is just stupid fun! Shouldn't be that much fun, but it is!
ferninando
Lunatic Member
When all is said and done, what opamp was chosen for this super preamp? the LME49720?
And would the chosen circuit be the one in the 1st post with the 49720?
Any changes to it?
Could I just buy all the parts in the schematic and be good to go?
And would the chosen circuit be the one in the 1st post with the 49720?
Any changes to it?
Could I just buy all the parts in the schematic and be good to go?
ghazzer
Senior Member
Go to page 53 of this thread. Post #791 has links to significant info within the thread. Post #795 has links to several related threads.
The last thread listed contains info about different combos of opamps that members have tried in their CNC, and their impressions and discussions. Should you decide to build one, please post your impressions of any "opamp rolling" that you may try.
The CNC, SSP and OPS are all good projects, well worth the time & effort, and quite rewarding. You really should make a concerted effort to read the thread & take advantage of all the discussions.
Enjoy - - -
.
The last thread listed contains info about different combos of opamps that members have tried in their CNC, and their impressions and discussions. Should you decide to build one, please post your impressions of any "opamp rolling" that you may try.
The CNC, SSP and OPS are all good projects, well worth the time & effort, and quite rewarding. You really should make a concerted effort to read the thread & take advantage of all the discussions.
Enjoy - - -
.
ghazzer
Senior Member
Hmmmm. Based on comments from Sachin and Omishra about their impressions of the LDR, I am thinking of adding one of these to the fray instead of a gargantuan 24 step attenuator. I think that would give me a CNC & SSP & OPS & LDR, which is more letters than my brother has after his name!
The right channel in my system is a little louder, as measured from a 1kHz tone from a test record. It is not a lot, but is noticeable, and just bugs me. Sounds like I could use the trimmers on the LDR board to balance the channels to my current setup. Balance would need to be re-evaluated if I change the phono cartridge, or other major components.
.
The right channel in my system is a little louder, as measured from a 1kHz tone from a test record. It is not a lot, but is noticeable, and just bugs me. Sounds like I could use the trimmers on the LDR board to balance the channels to my current setup. Balance would need to be re-evaluated if I change the phono cartridge, or other major components.
.
Here is my project
Hi to all. I have spent weeks ready several posts regarding these projects and I want to thank Sachin, Omishra and many others here for providing such a valuable wealth of information on the various projects such as SSP, CNC, LDR, PSU and PASS B1. I am going to attempt to upload some of the pictures with the new enclosure that arrived today. I am debating whether to use the SSP or the PASS B1. The LDR and PSU board are on their way so you won't see them in the pictures. Also here is the 6 Position Switch as well. Here I go.
Hi to all. I have spent weeks ready several posts regarding these projects and I want to thank Sachin, Omishra and many others here for providing such a valuable wealth of information on the various projects such as SSP, CNC, LDR, PSU and PASS B1. I am going to attempt to upload some of the pictures with the new enclosure that arrived today. I am debating whether to use the SSP or the PASS B1. The LDR and PSU board are on their way so you won't see them in the pictures. Also here is the 6 Position Switch as well. Here I go.
