diyAudio

diyAudio (https://www.diyaudio.com/forums/index.php)
-   Analog Line Level (https://www.diyaudio.com/forums/analog-line-level/)
-   -   The Kuartlotron - keantoken's simple error-correction superbuffer (https://www.diyaudio.com/forums/analog-line-level/251413-kuartlotron-keantokens-simple-error-correction-superbuffer.html)

Destroyer OS 18th August 2015 06:43 AM

So the TL431 can be used, but leave pads for alternatives? The TL431 with those parts is really small, so why not?

JP, I don't see your PCB version yet either :p

keantoken 18th August 2015 06:46 AM

Quote:

Originally Posted by jean-paul (https://www.diyaudio.com/forums/analog-line-level/251413-kuartlotron-keantokens-simple-error-correction-superbuffer-post4423590.html#post4423590)
If you are into low component count, low board space and low noise the newer LDO's might be just what the doctor ordered but then no K multiplier necessary....Uh oh...

I've looked at the newer LDOs and they may be okay. Refresh my memory.

You're right, there is no need for the kmultiplier to go in. I just don't like copying others' designs, but I suppose I should just let it be.

TNT 18th August 2015 07:03 AM

Quote:

Originally Posted by keantoken (https://www.diyaudio.com/forums/analog-line-level/251413-kuartlotron-keantokens-simple-error-correction-superbuffer-post4423432.html#post4423432)
I don't think anyone has indicated so far that the KM will even benefit significantly from a complex regulator.

I just recently made this test/comparison. On the start line:

7VA SLA batteries x2
KMult.
Hypex HNR/HPR12 12v Regulators (1+ / 1-)
2x Wellmean 15v/15W
A DAM 0.01% DAC.

a) With batteris only there is a really fluid big sound that has some really desirable properties.
b) Kmult only. Good but not the sense of stable granite as batteries.
c) Hypex regs. Musical, clean but lacked bass foundation.
d) Hypex regs + Kmult. Very close to batteries with maybe a tad cleaner and less grey upwards. Connected like: Meanwell -> Hypex -> Kmult -> DAM -> Hypex nCore ->

So the combo wins and removes the hassle with batteries. Haven't tried cheaper/simpler regs but have the feeling it can work as well.

//

keantoken 18th August 2015 07:18 AM

Have you tried a Salas reg on the same setup?

TNT 18th August 2015 07:47 AM

I don't have access to a Salas shunt.

Joshua_G 18th August 2015 08:32 AM

Quote:

Originally Posted by jean-paul (https://www.diyaudio.com/forums/analog-line-level/251413-kuartlotron-keantokens-simple-error-correction-superbuffer-post4423590.html#post4423590)

So are the newer LDO regs with astonishing low noise numbers.

What are those LDOs?

keantoken 18th August 2015 08:44 AM

1 Attachment(s)
Here is my first stab at the relay section. Experience certainly serves here. I had to trial and error it until I found a routing that wouldn't break the ground plane. Just quick and messy so far.

AndrewT 18th August 2015 09:49 AM

Quote:

Originally Posted by TNT (https://www.diyaudio.com/forums/analog-line-level/251413-kuartlotron-keantokens-simple-error-correction-superbuffer-post4423620.html#post4423620)
I just recently made this test/comparison. On the start line:

7VA SLA batteries x2

what is a 7VA lead acid battery?
2V, 6V or 12V?
They don't make 1V sla.

or did you mean 7Ampere hour?

jean-paul 18th August 2015 12:11 PM

12V seems a bit obvious ;)

TNT 18th August 2015 05:38 PM

Quote:

Originally Posted by AndrewT (https://www.diyaudio.com/forums/analog-line-level/251413-kuartlotron-keantokens-simple-error-correction-superbuffer-post4423739.html#post4423739)
what is a 7VA lead acid battery?
2V, 6V or 12V?
They don't make 1V sla.

or did you mean 7Ampere hour?

Sorry, to early in the morning... yes 12V 7AH

//


All times are GMT. The time now is 02:09 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 17.65%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio

Wiki