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Messages - sumotan

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1
HiFi Audio Equipment Discussion / Re: KLAV show 2017
« on: August 11, 2017, 09:37:43 PM »
Interesting poster from ASI speakers
Made In French

2
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 18, 2017, 09:47:06 PM »
In whatever we do its always the foundation thats
the most important. Just that most ppl think that
the foundation is from the equipment. If we're just
looking at equipment then transformers comes first.
Re regeneration yes perhaps we can look into it.
For me Im looking for simple solutions without
adding too many stuff

Cheers

3
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 17, 2017, 08:26:05 PM »
The really sad thing these days are that diyers are really thin to the ground. The new
generations of audiophiles are more akin to buying expensive stuff & thinking that it's
bloody good due no small part to the press & marketing hype. Among this small minority
group of diyers, we also have the know it all gang who resist any comments simply because
they can or have build a couple of equipment which gives them the smugness or so they think.
So where does this leave guys like you & me JB ? How can we invite open minded beginners
& experience diyers to join us to exchange discuss etc. Go over to the other site & see what's
happening now

Cheers

4
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 15, 2017, 07:17:04 PM »
Wow for all this dedication & your unselfishness to share,
I really do hope that readers would take heart & appreciate
what your doing. Bravo  :)


5
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 15, 2017, 05:37:35 PM »
Thks for the heads up. Noise from smps ???
Pls come, proof of the pudding is in listening.
Lol

6
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 14, 2017, 11:33:55 PM »
Tried those long ago JB. Didn't like what I heard.
Like all tweaks I believe type of caps use in the
filter affects the SQ as well. Re chokes be it single
or common mode varieties, I always stay away from
ferrite cores. In my experience it the away life &
sounds dark. For high current powder iron is best
due to ut low saturation point but they're so hard
to come by. I've build a new AB amp which is
powered by Hypex smps. Well compared to the
old amp which is the same but with linear supplies,
I think the days of big trans & large filter caps
is coming to an end.

7
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 13, 2017, 12:00:04 AM »
You mean someone has made the Risch filter for sale ?
Btw I don't get it why everyone is fixated on toriods,
only tried once on my project & immediately went
back to EI . Sq wise EI sounds better & off recent
yrs it's been proven the toriods are a no no due
to its poor rejection to noise. Haizzz looks like its
back to the pen is mightier then the sword thingy
Think the better solution is 1 Risch filter per
equipment. Caps that I used were Wima FKP

Cheers

8
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 12, 2017, 06:59:52 PM »
Someone over your end should build one to test
Jon Risch did mentioned clearly that it works
better when load with a 100 power resistor or
light bulb. But off course who would want to waste
silly electricity onto a resisitor when you could
light up the room with a bulb. Lol
Thks  for the heads up as well as reminding me
that I should get a scope. Give mine away when
I moved over here

Cheers

9
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 12, 2017, 04:48:35 PM »
Oldie but goodie JB
Strange when you load the filter
with a 100 watt light bulb you
hear immediate changes in SQ
as I recall more analog sounding
if I dare say. I believe this filter
will work well in SG given that
there's so much Ac garbage on
the line these days

Cheers

10
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 12, 2017, 03:15:27 PM »
Bravo JB

Wow it's been moons that Id seen this schema.
Are you able to simulate it with a 100 watt loading ?

11
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 11, 2017, 01:21:05 AM »
Yes JB thank you would be nice to meet you in person even if my system sucks at least I get
to meet an impartial audio friend. Btw me & Dr. Wong can be buddies, I too use Cat 5E.

Looking forward to meet you

Cheers

12
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 10, 2017, 01:26:21 AM »
Hi JB
originally it was again something the Jon Risch played with
a very cheap & simple solution by using normal tranformers
which can be bought off the shelf by connecting them back
to back & in between adding a cap. Somewhere along the line
it was improve by others how using dual primaries with centre tap
output also connected back to back which automatically turn the
primaries into balance out. For low current application, this is a
really cheap solution as compared with buying big expansive
balance transfomers. Yes AC regeneration may be better but
just look at what it cost & when you factor this in how much
better is it over what we can diy with the right stuff ?
Would be great if someday you could drop by my place, have
a listen to my set up but pls dont fall of the chair when you see
what I use for power cords, speaker cables etc.
I graduated from the Wadia & Jadis camp before I started diy.
Not saying that all that's out there isn't good but it's always
a point of dimishing returns once you pass a certain expenditure
level

Cheers

13
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 09, 2017, 03:15:20 PM »
Very true JB on the other hand regeneration is adding another component
that mucks with AC which may or may not sound good even if the AC is
cleaner, quieter & stable. A simpler solution & less costly but not as quiet as regeneration
is something like the Felicia balance line AC which should be very good for low current
equipment & if you can get a transfomer guy to wind an input of 240v then voltage
variation at output will not be that much. Don't know but for me a passive solution
is more logical to me in context to AC outlet.

Cheers

14
HiFi Audio Equipment Discussion / Re: The power conditioning thread
« on: May 07, 2017, 03:43:05 PM »
Yes watchdog common in light current draw equipment
but not in amps. In any case loading is a must in circuitry
to ensure stabilty & optimum performace.

Cheers

15
HiFi Audio Equipment Discussion / Re: HiFi visiting in Sarawak
« on: May 04, 2017, 08:02:06 PM »
You have my utmost respect JB.
Running this site takes alot of time.
Kudos to you. Hope that
many others would join in,
appreciate your efforts &
have fun

Cheers

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