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DIY T-Amp user/diyer come here :), TA2024 complete build board diy

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ongbs
post Sep 7 2008, 03:30 AM

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jazzy,
What is your donut diameter?
refer to my pic, both black and green donuts about 12mm dia, with black one slightly wider.

The black one with 0.08" wire and 5 turns with no SQ distort but the green one with 12 turns of 0.09" wires still cause distortion, the uH not enough.
If your donuts about the same size then don't go for >0.09" wires. I will try 0.08" wire with the green one later.

note the twin input caps in test? It sound better to me smile.gif

update:
hmm...with 20 turns of 0.08" wires still cause distortion! sweat.gif
lower till 6 turns still the same....possible this green donut not suitable for this application?

This post has been edited by ongbs: Sep 7 2008, 04:49 AM


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ongbs
post Sep 7 2008, 07:07 PM

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QUOTE(jazzy939 @ Sep 7 2008, 11:02 AM)
ongbs,
The ID is 8.37mm and the OD is 15.37mm.
The black one looks like it is of different material than the green one?
Mine is also painted light green but one side is painted brown.
You don't have anymore of those black donuts, no?
I think on the grren, you need more turns ler..

Are you using a linear PSU? Whats your 'tank' cap value there?

Yes yes saw that input caps! Better huh? Value?
*
Jazzy, I got 4 black donuts.
Not sure about material but look like more ferrite contain.

Yours bigger, should be OK, my green donut with max 20 turns, can't wind more unless I overlap it.

Using SPMS.
Input caps is 2.2uF (yellow) + 0.33uF (white), gave me brighter mid/high smile.gif
ongbs
post Sep 7 2008, 08:28 PM

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QUOTE(jazzy939 @ Sep 7 2008, 08:20 PM)
ongbs,
why don't you use all balck donuts? tongue.gif

actually you can overlap the coils..

So your input caps is 2.53uF total?

I put in a ELNA 2.2uF on Board 1.. obviously better that the yellow stock caps..  the sound is more lively! biggrin.gif

Here's the pix...
*
Use 2 diff donuts easier to compare mah smile.gif
ongbs
post Sep 7 2008, 08:36 PM

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QUOTE(jazzy939 @ Sep 7 2008, 08:32 PM)
oh ya just like I did! tongue.gif
so, which one is better?
*
The green one totally out as it caused distortion sad.gif
ongbs
post Sep 8 2008, 06:55 AM

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morning jazzy smile.gif

How's yr bi-amp progress? brows.gif
ongbs
post Sep 8 2008, 07:03 AM

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QUOTE(gabanyayaya @ Sep 8 2008, 12:02 AM)
ok it's official, i'm now joining the T-amp klans now.... biggrin.gif  ok bro yeh...
*
Welcome bro smile.gif


Added on September 8, 2008, 7:06 am
QUOTE(jazzy939 @ Sep 8 2008, 07:01 AM)
Hey top of the morning to you! biggrin.gif
The board is basically ready to be planted..
Just did not have time to prepare the casing for it. Was busy with a guest yesterday. tongue.gif
Hopefully will do it sometime this week.. hehe.
Whats your progress?
BTW, I have stop counting the burn in hours.. I have exceeded 50hrs.. laugh.gif
*
hehe, same as you, got a friend came over to test T-amp at my place yesterday...
I purposely cover the amp with paper, the bare board without casing sit on the floor(patient 2).

After 15 min enjoying music then I opened up the paper, he..."WOW! The amp so small!" laugh.gif

I just bought 2pcs of twin-binding terminal for speaker box , wanna mod my FS for bi-amp too brows.gif

This post has been edited by ongbs: Sep 8 2008, 07:12 AM
ongbs
post Sep 8 2008, 11:20 AM

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QUOTE(xtorm @ Sep 8 2008, 11:01 AM)

hehe, you mention bi-amping for a very long time edi, cant stp enjoying the music? cool.gif
like my friend, when he 1st heard it in my car, so big sounding yet so small.... rclxm9.gif
haha bi-amping club, im already in.....

sick since saturday, now im sick at home, so didnt online that much, cant even enjoy my t-amp even tho im so free...totally blur now rclxub.gif

my friend still urging me to finish up his amp as we speak...hahahaha, btw i when to jalan pasar at around 5pm (yea thx to my friend who isnt on itme most of the time..)on saturday, so couldnt meet you up, it was a short trip, else i will be calling you abt the smps...
*
Sick or "over-burnt"? huh whistling.gif

So bro when is your next trip to JP? brows.gif

This post has been edited by ongbs: Sep 8 2008, 11:21 AM
ongbs
post Sep 8 2008, 01:52 PM

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Well Y.C,
This update sure will be another poison for those who haven't joint the T-amp club laugh.gif


Added on September 8, 2008, 1:53 pm
QUOTE(jazzy939 @ Sep 8 2008, 01:51 PM)
Y.C.,
Looks like you've concluded your T-Amp review.. tongue.gif

Guys, I will be away for a few days. I may not be able to log in after this. Will log in as soon as I am back form 'work'..

Anyone planning to go to JP this weekend?

xtorm, you must have 'over burnt'.. laugh.gif
*
oh bro, gonna miss u badly then... wub.gif doh.gif

I believe xtorm will go to JP soon as he miss the MW SPMS tongue.gif

This post has been edited by ongbs: Sep 8 2008, 01:54 PM
ongbs
post Sep 8 2008, 10:16 PM

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QUOTE(bling*2 @ Sep 8 2008, 04:48 PM)
what is this?
*
hmm.gif hmm.gif hmm.gif you kasi "rasuah" a bit then I let you know rolleyes.gif tongue.gif


Added on September 8, 2008, 10:17 pm
QUOTE(ijan @ Sep 8 2008, 09:25 PM)
its not that cheap are always not good, its more like expensive arent always THAT good smile.gif
*
Good sentence! thumbup.gif
Sometime even knew it is good but $$$ really make us think many "twice" laugh.gif

This post has been edited by ongbs: Sep 8 2008, 10:19 PM
ongbs
post Sep 9 2008, 07:06 PM

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QUOTE(jazzy939 @ Sep 9 2008, 12:41 PM)
Hi there fellow T-Amp-ers! biggrin.gif

Looks like I didn't miss much here tongue.gif
No.. I am NOT back yet. Just that I have an internet access where I am at this point of time wink.gif
Can't stay away from the thread for too long huh..  blush.gif

So far, nothing 'new' on our T-Amp scene eh..?

Gabanyayaya, is he buying one since he's joining the club? He has been quiet these past 2-3 days...

The last thing I did before going away to my second board is to install a 10,000uF capacitor across the power supply input. Probably need to 'burn in' that cap too before any sonic improvements/or otherwise is heard! tongue.gif

I have checked the voltage/current drop when playing (really)LOUD.. none detected by my DMM..

Still on power supply, during switch ON the voltage peaks to 19VDC for few milliseconds! Don't know if this would be harmful to my little marvel in the long run. Also during this time, the DC volts across the speaker terminals maxed out about 2.4V, just for a very brief moment. This explains the speaker 'pop'/thump sounds..This worries me more..  sweat.gif

Speakers wise, I momentarily disconnect them before switching ON. Have not come up with anything with the power supply surge...  hmm.gif

Anything on your side guys? Y.C./ongbs/xtorm? Sorry if I missed out anyone else but it's only the FOUR of us?  ohmy.gif
*
Wow bro...how you captured that "a few ms" 19V surge?

ongbs
post Sep 9 2008, 08:59 PM

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QUOTE(jazzy939 @ Sep 9 2008, 07:10 PM)
PEAK HOLD feature of the DMM  tongue.gif
*
I believe it is due to power supply, try without the T-amp, is it still the same?
ongbs
post Sep 9 2008, 10:49 PM

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QUOTE(jazzy939 @ Sep 9 2008, 10:44 PM)
Dunno yet.. will do that when I get back!  biggrin.gif

Terribly quiet eh this thread tongue.gif
*
What to do?
You are away and enjoying your "special moment" brows.gif

Some more xtorm "burnt" by his t-amp, haven't recover yet I believe doh.gif
ongbs
post Sep 10 2008, 01:23 AM

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QUOTE(jazzy939 @ Sep 10 2008, 01:12 AM)

With or without the input caps.. so long as I am getting the sound that I wanted and enjoy, I am not bothered (for now tongue.gif).. Its a never ending chase if you're looking for audio 'nirvana' so to speak.. so I would draw the line somewhere. Otherwise we'll go from obsession to insane! laugh.gif

*
thumbup.gif thumbup.gif thumbup.gif rclxms.gif rclxms.gif rclxms.gif (I can't slot in any extra words) laugh.gif
ongbs
post Sep 10 2008, 01:41 AM

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QUOTE(jazzy939 @ Sep 10 2008, 01:25 AM)
ongbs,
you're a man of few words eh? pure 'action' man? laugh.gif wink.gif
*
Baru tau ah? (still not too late) tongue.gif
ongbs
post Sep 10 2008, 01:45 AM

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QUOTE(Y.C. @ Sep 10 2008, 01:30 AM)
Hi, ongbs, you sleep late too. Jazzy is good with words and I laughed when I read " ...otherwise we'll go from obsession to insanity! "
*
Yes, me one of the night "old" owl here smile.gif

"Hunting" chance to blast my little amp kaw-kaw....wife and toy keep on complaining too loud, how to burn further huh? :'(
I am downstair and they are in inside the bed room, still want to complaint? doh.gif Pity me sad.gif

This post has been edited by ongbs: Sep 10 2008, 01:46 AM
ongbs
post Sep 10 2008, 02:00 AM

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QUOTE(jazzy939 @ Sep 10 2008, 01:57 AM)
And I am one of the 'old' night owl too! tongue.gif

At night the T-Amp can be really loud! In the day, the volume setting on my pre-amp would be between 9-10 o'clock position. At night, 8 o'clock is kinda loud! best part is even at 'low' volume at night, you don't lose the resolutions.. the whole spectrum of sound is still there n fact there is 'more'...

My T-Amp is also downstairs.. the consolation is, so far no complaints yet!  whistling.gif
*
hmm..then really a pity me sad.gif

Myself got more time to "burn" than the T-apm doh.gif

haven't blast it >48 hours liau sad.gif
ongbs
post Sep 10 2008, 11:13 AM

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QUOTE(xtorm @ Sep 10 2008, 09:25 AM)
yea but he like loud music, pity him tongue.gif
aiya bro it consume so little electricity, just let it run with your ipodlor...both consume very little electricity biggrin.gif
you are home!!! ahhaa its more like you nvr been away thumbup.gif
hey there, K.C. friend?


Added on September 10, 2008, 9:27 ambtw great new in the morning!!

goods for 3rd batch arrived!!! biggrin.gif ongbs, balance amping?
*
Not really loud lah...maybe my ears "kong" or they have ultra sensitive ears brows.gif
My T-amp is On all the time bro, but "without" singing lah tongue.gif
Standby mode only 65mA, you can't even "feel" it printed on the E.bill laugh.gif


Added on September 10, 2008, 11:14 am
QUOTE(Y.C. @ Sep 10 2008, 10:42 AM)
Good morning, all.

Xtorm, have all of your batch 3 stocks been snapped up, could spare me just one pc?

Yup, this ekool chap didnot even comment anything; wonder why he quoted me?

tongue.gif
*
I kept on "refleshing" 3 times early morning, try to figure out what he want to "write" hmm.gif

This post has been edited by ongbs: Sep 10 2008, 11:14 AM
ongbs
post Sep 10 2008, 11:18 AM

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QUOTE(xtorm @ Sep 10 2008, 11:15 AM)
haha u goto let it sing to burn in lah...
*
Whenever I back the volume is at "MIN" position, how to burn? cry.gif


Added on September 10, 2008, 11:19 am
QUOTE(xtorm @ Sep 10 2008, 10:45 AM)

Added on September 10, 2008, 10:49 am
haha thanks to you guys for being so supportive!

yea i will try without input cap this weekend biggrin.gif
*
icon_rolleyes.gif icon_rolleyes.gif icon_rolleyes.gif thumbup.gif thumbup.gif thumbup.gif (another times, I can't add any extra words doh.gif )


Added on September 10, 2008, 11:23 am
QUOTE(jazzy939 @ Sep 10 2008, 11:10 AM)
Y.C.,
Nahh am not in SIN city.. hehe but merely 2 1/2 hours by flight to the east. 1 hour time difference wink.gif I think you have a fair idea where biggrin.gif

*
hmm.gif hmm.gif hmm.gif (3rd times? doh.gif )

This post has been edited by ongbs: Sep 10 2008, 11:23 AM
ongbs
post Sep 10 2008, 11:32 AM

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QUOTE(jazzy939 @ Sep 10 2008, 11:26 AM)
ongbs, 65mA is like nothing eh? What about the power consumption of the SMPS?

Question: In the stock form, a polarised 1uF is connected in parallel with a NP 1uF(the yellow coloured one) right?
Why a polarised cap is used?  hmm.gif I'd this has got something to do with the DC biased input design of the T-Amp, no?

I hope ekool will be back.. I'm a curious why quoting the whole post without any comments.. lost for words?  laugh.gif
*
Aiya...can't be quite this time tongue.gif doh.gif
bro, I totally "ter-ignored" that SPMS liau....hmm...should be around 5W I think hmm.gif

But most of the T-amps designs didn't have this DC caps right...?
Maybe they thought different types of cap materials made different characteristic when "transfer" signal brows.gif brows.gif brows.gif
Like my 2nd patient huh? whistling.gif

this is call The Lost World (minus "L") doh.gif tongue.gif

This post has been edited by ongbs: Sep 10 2008, 11:38 AM
ongbs
post Sep 10 2008, 11:45 AM

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QUOTE(jazzy939 @ Sep 10 2008, 11:42 AM)
hahaha.. no worries! 5W? Really?
Hmmm my lenovo laptop PSU here (output 20V 3.25A) is stamped 65W.. biggrin.gif
Still I would consider 'negligible' eh? tongue.gif

Most maybe.. It is just the design on this TA2024 that is different I think..  hmm.gif

The Lost World(minus the "L").. I like it!  laugh.gif
*
65W is the max output power, in standby mode without charging the lappy batteries, I believe it will only consume around 5W too nod.gif

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