wishing all our muslim brothers and friends

"Selamat Hari Raya Puasa"

middle of testing. later today will post. sorrylah!

[quote=Y.C.,Oct 2 2008, 01:30 PM]

You in middle of testing what?

y.c
your y.c. caps cost only rmo.90 for 2.2uf and rm1.10 for 10uf. maybe you could get some discount since they are using your name. copyright? have tested the following and found
1. using y.c. caps gives you a very bright sound. too bright and too much hi for my liking. this goes for both the 2.2uf and 10uf.
2. the vishay 2.2uf gives a much warmer and overall better feel sq.
3. i tried one very small 10uf cap (see picture). don't know what make and found that the base is quite solid. i paired this with the panasonic 1000uf and i quite like the sq. the bass is not too loud but solid and the hi is clear and bright. mid is a bit subdue but acceptable. this combi is great for rock music. again you need to pair with a decent speakers.
3. i tried a few other values like 10uf, 2.2uf, 4700uf, 6800uf, 1000uf, etc as well. also found that the higher the voltage value, the sq changes too. here you have to try with different values that suit your preference and your speakers.
4. also something happened while testing. one of my caps exploded. (see pix) why? search me! the polarity is correctly soldered. this cap is bought from jp. so beware you guys.
5. all the caps incl. panasonic can be bought from jp.

This post has been edited by ekool: Oct 3 2008, 12:28 AM


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[quote=ongbs,Oct 3 2008, 12:46 AM]
walau, 12V only also burst ah?
What brand and voltage rating is it?

no sub. just normal bookshelf speakers. caps -lelon, 16v 4700uf. could be a voltage surge?

ok gotcha! thanks.
i may have been wrong. it could be rm0.70 cos i bought others at the same time so didn't pay attention. yes the panasonic is not the fm series. i wanted to try other and see how it sounded cos you guys have been using the fm series. cost rm3.70 or rm4.70. cant't remember.

yeah,
g nite. btw what happen to to the board that you want to remove the smds. still need my hand to steady yours?

xtorm
yes. the 6800uf was used on the powre rail. i think it must be a dud like jazzy said.

jazzy,
sometimes, i'm a night owl like you guys. most of the time i'm not. just came back from hari raya open hse and too full to sleep so just lock in.

ongbs
yeah you're right. could not be any surge otherwise the whole board would become useless. anyway thank goodness the board is alright. i wonder why nobody mention whether i'm alright., hahaha

btw, i found a smp rated 12v-15v. this is used for my old portable tv set that runs 12v. when measured this morning it gives 19.5v dc. made in prc. another friend bought a smp recently and similar thing happen. supposed to be 12vdc but when measured gives 17v/18vdc. bought in jp. so beware again and please measure your smp first before hooking up to the t amp if you bought any power supply from jp made in prc.

This post has been edited by ekool: Oct 3 2008, 01:37 PM

wow! so quiet today. what happen to you guys? still holiday mood? open house or busy mod t-amp?
also we've hit the 100 mark and boy sure like to be in this page.

latest mod to my t-amp. from previous post i said that the y.c. caps sounded very bright, too bright. did more mod today and found that the following config. sounded GREAT! input - 2.2uf + 10uf +10uf (each ch.) power caps - 1000uf or 450uf. with 1000uf hi is more. with 450uf sq is more natural and warm. y.c. words - more body. all the hi, mid and low is now FANTASTIC. do not know how to describe but my jaw went wide open and WOW! in fact with more run in i think it will be even better. i think this will be my final mod as i will be sticking to this config unless i decide to replace the smd. also this t-amp is one hell of an amp. so versatile. with this mod this amp is now suitable for a variety of music. i played pop, rock, jazz, and they all sounded great - to me tht is.


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hi guys,
sorry could not post earlier cos my line was so... so... slow. uploading took so long i decided to quit. that's streamyx for you.

y.c.
i'm using 22.2uf for each channel and like metalmania said the sound may or may not sound good. at the moment i am very happy with it and no complains.
later, yet to be seen. like our jazzy bro said - if you like it, keep it. it's all a matter of personal taste. right on bro!!! i'm with you.

yes! y.c. you're right! i'm tweaking the t-amp to suit my sonatas. the sonatas are very polite and even a bit shy if you do not know how to pair them. but once you get it right they can be killers yet small in size just like the t-amp. say what you like i have always like the british sound compared to american. jap - last choice if possible.

sure i can bring my baby in but it has to be on a friday. other days incl. weekends i'm not free. so where and when? karaoke joint? not a bad idea.abanyayaya. so who's gonna put this tt session in session???? y.c.? jazzy? xtorm? ongbs?

ongbs
three main reasons why you get a distortion.
1. you input current is too high if this is the case your caps could be faulty, leaking or shorted. wrong values used could also be the cause
2. you output current is also too high same reason as 1.
3. your speakers does not match the amp. in this case it is very unlikely cos the t-amp is very friendly and can handle most speakers available.
i have tried it with a few different speakers and have no problems from cheap jp speakers, mini compos, bookshelves to floor standers. please check and let us know.

yes. i missed out the ground. thanks.

This post has been edited by ekool: Oct 8 2008, 03:31 PM

hey guys,

why is everyone starts comparing prices? i think we are missing the point here. as a diyer you do not really bother about specs, blueprint what can what cannot. what you want is something you enjoy designing, building or modifying and breaking all the rules ending with a good or bad job/product. of cos this comes with what budget you want to put in. at the end of the day it is the experience and satisfaction that matter most. agree? not something we want to compare between a rm10 vs rm 100k system. as they say, there is no perfect system. we got to be more realistic. a t-amp that cost say rm200 (all in after mod etc) vs rm50/100k system? get my drift? more over with rm55 (t-amp) plus another rm55-100 (parts etc) i say it is fun and enjoyable to play/mod. i am sure if you buy a shelf branded unit rm1000, you would not want to mess with it. right?

y.c.
you sure your office can hold so many people? also won't you guys be disturbing your collegues with loud chatting and testing music on the t-amp? i have earlier agree with gayabababa of holding it in a karaoke room but no one seems to respond. reason being is in a karaoke room you can make as much and as loud noise you want without disturbing anyone. the room is also sound proof to a certain extend and cosy and best of all you do not need to clean up after the session. the drinks may be a bit expensive but if i remember they do have happy hour rates. give it a second yhought.

[jazzy

just a suggestion. btw what kind of distraction rare you refering to?

This post has been edited by ekool: Oct 10 2008, 01:07 AM

gotcha. like i said. it's only a suggestion.

I thought the rear of my second T-amp looks very much like a Trends TA 10.1 T-amp especially its rear.

[/quote]

y.c.
nice work. sure looks like the trends ta10. so looks like this amp has no vol control. did you enjoy the poking and filing the whole night thru?

hi guys

saw this amp laying around my friend's house. he bought it out of curousity to see how it sounded. took it back and did a bit of mod and added my 20.2uf t-amp in. sounds great especially now there is a bass and treble control. also there's a vu meter. surprisingly the pre amp signal is very clean with no hum or noise. size is also just right just slightly bigger than the pc player/recorder. great enjoyment to my music. see pic.


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Ekool,
It looks great.
You are one lucky fella, always got such opportunity in the sense you need not build your T-amp entirely from ground level up.

[/quote]

y.c.
who said i need not build the t-amp from ground up? i still did the mods and experimenting with different caps except smd. finally using 22.2uf. only thing lucky for me is to have some old casings laying around. that's all. in fact i want to put my t-amp into a car amp casing. up till now couldn't fine a suitable one. a friend is supposed to one for me. he is still looking. jp stock mainly plastic casing and the metal ones are too big. anyway still looking for another casing for my 2nd t-amp with 2.2uf vishay input and 4700uf pwr caps. a case that can include the pwr supply and t-amp inside. also i'll be putting two vol pot instead of one. the vol pots are 20k, not the small alpha type but the bigger alpha ( size around 20/50 cent coin) i have tried this type and i found the sound more pleasant to listen to.

any help guys to look for a good casing locally?

jazzy.
thanks. btw how is your bi amp? would like to know how it sounds cos i might want to try it. i have a pair of bi amp speakers lying around and now is only using the std connection.

ongbs
how's your crossover coming? finalised your configuration? please share. thks

y.c.

thanks for pointing out jazzy's mistaken identity of me for mysghooi. i have seen/read his mistaken earlier
and didn't bother about it cos if one can't get it right on who is who it speaks a lot about that person. what's
more it happened not once. thanks again.

glad to see your led is working at last.
fyi- led sold in jp are basically two types. the cheaper/normal ones are 3v whereas the more expensive/brighter
ones are 5v. most 1k resistor will work. just make sure they are 1watt and not less. there is no harm using higher
value except that your led will not be as bright.

jazzy
yes the casing you probably saw in jp is/could be the same. i asked my friend and he said that he bought it in jp.
price is below rm100 and wanted to try it just to hear how it sounded for such a cheap and small amp. he didn't like
the sonics thus it ended up with me. fyi - this casing is quite flimsy as it is made from cheap thin metal sheet. to make
it feel heavy they put a brick inside the amp. ac pwr cable is very thin and will get heated up easily. the amp fr where else prc.
also saw some other similar amps which cost around RM125 but a good friend of mine told me not to waste my money
on it since i already have the t-amp. instead go hunt for a proper and cheaper casing. also saw at nixie like you mentioned earlier
a casing that looks similiar to y.c. this casing is too small for my liking. looks and feel like a toy. anyway ifound a cool metal casing
and using it strictly as a pure power amp. no vol pot. see pic.



This post has been edited by ekool: Nov 3 2008, 01:34 AM


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xtorm

i think the t-amp boards may have some quality problems. i noticed most boards have the famous thumping/pop sound.
i understand y.c. and his collegue's board does not have this problem. earlier one of my board also does not have this
problem but now there is a slight soft pop which i can live with. this is stock board.
maybe xtorm can check into this with your supplier?

fyi- for those of you who are still running in your t-amp, be prepare for a sweet surpirse. when hitting near/at /after
the recommended run in hours. your amp will suddenly sound louder and depending on your mod -better.
to enjoy this experience you must play the t-amp at a constant vol throughout the run in process. otherwise you won't
know what you miss.

enjoy!!!!