Can a ssm2141 differential chip be used in the input to make a balanced input for a riaa preamp ?
All those green lights, from now on it will be Christmas every day, happy Christmas Nick77 it looks good
Nick, are the pi cabs with pro drivers extending enough in the bass when on the floor hard against the front wall?
I have the upgraded JBL 2226 driver and yes when sitting on the floor the bass is quite adequate. But they sound there best when up off the ground 15" or so. I only have them sitting on a false base about 4" and they sound great and run them with out a sub 90% of the time.
Recent build pic.
Nice color scheme. Maybe they can hang off the ceiling and still throw the right way if upside down.
Hi Riccardo I have posted a while ago my LT1028 balanced
Maybe Joachim remembers?
Using complete INA limit resistor value choice? 3 K and 6 K for 163 while discrete 3 LT1028 alowd for much lower values.
Worth looking at FDW balanced ?(yes I know I need to get back to it SORRY is not forgotten)
Maybe Joachim remembers?
Using complete INA limit resistor value choice? 3 K and 6 K for 163 while discrete 3 LT1028 alowd for much lower values.
Worth looking at FDW balanced ?(yes I know I need to get back to it SORRY is not forgotten)
Good post.... you read my mind... there might be limitations due to INA input imp 🙂
Is LT1028 jfet input opamp ?
Can you find your post about the balanced input ?
Is LT1028 jfet input opamp ?
Can you find your post about the balanced input ?
Ricardo,
noise figures in the order of 1nV/√Hz or lower are achievable only with bipolar input.
noise figures in the order of 1nV/√Hz or lower are achievable only with bipolar input.
Why the question mark, and where are the listening reports? 🙂
http://www.diyaudio.com/forums/analogue-source/165603-balanced-input-all-dc-coupled-riaa-preamp.html
Long time ago here a couple of preliminary drawing (I am sure you can do better than me)
One is Split passive and did run for couple of years😀 try ed AD797 but was a bit to metallic
second was going to be, till I got infected by MPP and decided to try and learn sumthink about transistors, tanks so much, to late now to realize that Public forum is not right place.
LT1028 is BJT low noise voltage wise Current wise noise is sort of forget to mention it so data sheet looks better .
But said before Frans got better...
Cant promise much all old file are in secret puter never connected to intra web at present in the loft untouched for quite a while
One is Split passive and did run for couple of years😀 try ed AD797 but was a bit to metallic
second was going to be, till I got infected by MPP and decided to try and learn sumthink about transistors, tanks so much, to late now to realize that Public forum is not right place.
LT1028 is BJT low noise voltage wise Current wise noise is sort of forget to mention it so data sheet looks better .
But said before Frans got better...
Cant promise much all old file are in secret puter never connected to intra web at present in the loft untouched for quite a while
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