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

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ongbs
post Aug 29 2008, 06:55 PM

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QUOTE(jazzy939 @ Aug 29 2008, 06:50 PM)
Y.C.,
Now that you see physically the little marvel.. it's unbelievable, right? tongue.gif

When I was there, there were NO young skinny little gurl.. how come ah..?  hmm.gif  tongue.gif
Yes.. I use a pencil point adjustable soldering iron for that.. don't really like SMD stuffs.. and the board is double-layered!

Happy hunting tomorrow!!!
*
jazzy, have you measured the original inductors with your new shinning meter? in uH?
ongbs
post Aug 29 2008, 07:01 PM

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QUOTE(jazzy939 @ Aug 29 2008, 06:59 PM)
ongbs,
No I have not as I have NOT removed any of them, yet. tongue.gif
Will do that probably tomorrow. It should be 10uH, right?
*

pls measure it and "report" here tongue.gif
not sure it is my inductance meter problem or what...my meter read 5uH.. doh.gif
ongbs
post Aug 29 2008, 07:32 PM

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QUOTE(Y.C. @ Aug 29 2008, 07:25 PM)
Thanks, Jazzy.

Yes, the little marvel looks much bigger in pictures and considering this small little fella to reproduce fine sounding music, it's quite unbelievable. I thought the soldering job was a 'lil rough and not refined but for RM55, I guess it's no issue here.  smile.gif

Talking about soldering iron, I'll need one too as my made-in-China elchepo soldering iron was last used 5/6 years ago and it's now full of rust. Will buy a finer tip soldering iron just like you.
*
"Hahaha, I think it's more of symptom of my age slowly catching up with eyes straining to focus on close objects and hands not rock steady like my younger days. Naked, semi naked model or dead stuff, same sahaja lah!"
walau...sounds another "uncle" grade to me bro Y.C....welcome to "Uncle's Club" doh.gif tongue.gif

Well, difficult to find 12V SPMS for lappy, most lappy voltage range from 15V to 20V.
If you could find one, it just works fine icon_rolleyes.gif

Yet to test 1.5A SPMS as my T-amp lying on the "operation table', gonna replace 20k volume VR to 100k one, and change the coils to thicker wire one as well...stay tune! biggrin.gif

This post has been edited by ongbs: Aug 29 2008, 07:33 PM
ongbs
post Aug 29 2008, 10:35 PM

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1.6A 12V SPMS tested and it can blast just like its elder brother 4A smile.gif
ongbs
post Aug 29 2008, 11:05 PM

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huh..."junior"? small jazzy ah? tongue.gif

korek-korek can't find the 1A SPMS, just afraid it will cut-off due to initial current draw from caps....will korek again smile.gif

This post has been edited by ongbs: Aug 29 2008, 11:07 PM
ongbs
post Aug 29 2008, 11:25 PM

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QUOTE(jazzy939 @ Aug 29 2008, 11:19 PM)
Yep. sortof 'jazzy jr" tongue.gif

Wahhh.. so much 'junks' to korek2? Any junks you wanna get rid of? tongue.gif
*
used to have plenty of junks till my wife cleared out all my stocks :'( tongue.gif
I doubt you got extra place for old junk => me lah tongue.gif
ongbs
post Aug 29 2008, 11:34 PM

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Make sure you get the right trans as many are using thin copper wires, I believe thicker wires will give better results.

Btw, what is the function of that 4 inductors in our t-amp?
ongbs
post Aug 30 2008, 12:07 AM

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QUOTE(jazzy939 @ Aug 29 2008, 11:45 PM)
ongbs,
the inductor, with the required capacitor forms part of the filtering network to filter only the modulation which includes the audio signal.
Whats left after the filtering is the great sound we heard... wink.gif
Therefore, without this filter, Class D would not work. tongue.gif

More stuffs to read here:  Class D Amplifiers
*
Thanks for the link bro notworthy.gif
ongbs
post Aug 30 2008, 12:39 AM

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QUOTE(xtorm @ Aug 30 2008, 12:23 AM)
jazzy unless those old copper are thick and with low resistance, i rather pay for the new 1... tongue.gif

im eager to know the result man...hahaha

moon cake festival is near, so lots of really nice box out there....haha
like this 1 here, damn its nice, a 3 layer thinggy, each layer with 1 mooncake only! rm61....wahlau, but only the top layer got cover...and only able to fit 1 t-amp with all the mods i have....
user posted image

i found a better alternative which can host 2 of my boards...hehe, with another compartment for power supply too kekeke tongue.gif cheaper too with more mooncake in it hahahahha, still i love the 1 above.... hmm.gif
*
bro, then after the mooncake festival you just threw the t-amp with mooncake box to my house can ah? whistling.gif
ongbs
post Aug 30 2008, 01:05 AM

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xtorm,

"eh your pillow put high high sleep and slow slow thinklah...wahahahahaha"

Walau, brader brader like this meh? tongue.gif

I doubt if bro jazzy can understand our phrases biggrin.gif
ongbs
post Aug 30 2008, 01:14 AM

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QUOTE(xtorm @ Aug 30 2008, 01:08 AM)
eh brader rply msn 1mah...hahahhaa

wei im ordering soon, money come.... hahahaha

else i ask you treat mooncake...kekeke

haha i think bro jazzy understand abit tongue.gif
*
sorry, me on lappy now....later go over PC then we chat in MSN tongue.gif
What you gonna do with the files huh?
ongbs
post Aug 30 2008, 01:19 AM

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QUOTE(bling*2 @ Aug 30 2008, 01:16 AM)
Quotable Quotes:
Better regret buying than regret NOT buying...
Forgiveness is easier to get than permission...


Thanks to Jazzy, this give xtorm some inspiration. flex.gif

He decided to buy alot of stuff without telling me and then ask for forgiveness.
Sooner or later i'll like someone's wife to throw all the stuffs. Forgiveness more easy to get mah~ brows.gif

May be i don't throw, i keep then sell it rclxm9.gif
*
hmm...I smell something.... shakehead.gif
throw him out easier lah.... tongue.gif
ongbs
post Aug 30 2008, 02:04 AM

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QUOTE(jazzy939 @ Aug 30 2008, 01:57 AM)
No I don't!  hmm.gif  tongue.gif
*
hahahahha....i knew it!!! whistling.gif tongue.gif
These are "deep tunes" between me and xtorm! doh.gif

btw, very clear and complete review of your "industrial grade" SPMS!
Nice works bro! thumbup.gif notworthy.gif

Awaiting your "Inductor review" as well.... rolleyes.gif

This post has been edited by ongbs: Aug 30 2008, 02:05 AM
ongbs
post Aug 30 2008, 02:16 AM

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QUOTE(jazzy939 @ Aug 30 2008, 02:11 AM)
ok. 'deep tune' is out of my league.. tongue.gif

you're welcome bro ongbs.

I also can't wait to see/hear how those toroid inductors will perform... wink.gif
Personally I think it may not be much... tongue.gif
*
Me too not expect too much improvement over inductors as they located at output stage, the effects might not be as obvious as input caps smile.gif
ongbs
post Aug 30 2008, 02:23 AM

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QUOTE(jazzy939 @ Aug 30 2008, 02:17 AM)
My thoughts, exactly!! tongue.gif
u're still up?
me still spinning more CDs... new things to hear! laugh.gif
*
hehe...I wanna go down stair and burn some extra hours for my t-amp too tongue.gif
ongbs
post Aug 30 2008, 02:28 AM

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QUOTE(xtorm @ Aug 30 2008, 02:24 AM)
haha nice review...i should get those smps and pu=lug it in my car tongue.gif
im expecting more dynamic, open sounding with the new inductors...smile.gif but not sure tho, lets see
*
I guess it will affect the frequencies (like crossover) more than give impact to the soundstage, but if the value out too much maybe noise/humming will occur hmm.gif
ongbs
post Aug 30 2008, 02:35 AM

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QUOTE(xtorm @ Aug 30 2008, 02:30 AM)
aiks jazzy....just saw you smps pic...no battery port right?

then 8.5amp going for rm98 smile.gif meanwell too

haha, im hoping so...tongue.gif since small changes is a big 1 in this amp...
*
hehe...someone gonna K.O liau (sleep), he got burnt by t-amp till fever doh.gif shakehead.gif tongue.gif
good yr nite xtorm! laugh.gif


Added on August 30, 2008, 2:37 am
QUOTE(jazzy939 @ Aug 30 2008, 02:34 AM)
battery port? what u mean?  blink.gif

8.5A is really going overboard! but if you wanna connect the T-Amp outputs in parallel, why NOT! biggrin.gif
*
exactly what i asked him in MSN...he mean the SLA charging circuit doh.gif doh.gif doh.gif haha.... another "deeper tunes" which I can't understand as well tongue.gif

This post has been edited by ongbs: Aug 30 2008, 02:37 AM
ongbs
post Aug 30 2008, 02:44 AM

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QUOTE(jazzy939 @ Aug 30 2008, 02:40 AM)
SMPS to charge SLA? doh.gif
Me not using SLA liao... laugh.gif

xtorm, u're talking in 'dutch' ler.. me no comprende..  laugh.gif
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bro, he K.O liau...time for us to burn so extra hours tongue.gif
ongbs
post Aug 30 2008, 12:08 PM

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Wow surprise....so quite on Saturday! tongue.gif

bro Jazzy, tot you just burnt extra 1 hour, you burnt whole night ah? rolleyes.gif
ongbs
post Aug 30 2008, 03:28 PM

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QUOTE(jazzy939 @ Aug 30 2008, 01:07 PM)
Yar lor.. came in here this morning around nine.. nothing... tongue.gif
Yep! Was burning in the whole nite till now! 14 hours with 12 hours on the SMPS!  thumbup.gif

I was quite surprised when I can really play LOUD!  laugh.gif

ongbs, what are your plans? We know Y.C. gonna look for that leng lui wink.gif

I will remove the stock inductor, measure the inductance, install my handmade toroid inductor and see whats going to happen!  tongue.gif
*
hehe...no plan for me tongue.gif
I got enough SPMS already biggrin.gif

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