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DIY T-Amp user/diyer come here :), TA2024 complete build board diy
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jazzy939
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 Aug 30 2008, 01:07 PM
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Yar lor.. came in here this morning around nine.. nothing...  Yep! Was burning in the whole nite till now! 14 hours with 12 hours on the SMPS!  I was quite surprised when I can really play LOUD!  ongbs, what are your plans? We know Y.C. gonna look for that leng lui  I will remove the stock inductor, measure the inductance, install my handmade toroid inductor and see whats going to happen! QUOTE(ongbs @ Aug 30 2008, 12:08 PM) Wow surprise....so quite on Saturday! bro Jazzy, tot you just burnt extra 1 hour, you burnt whole night ah?  |
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jazzy939
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Aug 30 2008, 03:29 PM
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ongbs, inductor review is on hold.  I just removed the stock inductor and guess what? My new LCR showing a reading between 0-1 uH!  Just sms xtorm informing him about it. He'll check with his distributor... Would be nice to have the actual schematics of our T-Amp board.. Close inspection of the stock inductor reveals very little/short length of Cu wires being used. I believe the max inductance would be one. Having the experience wounding myself an inductor, I need 20" to get 10uH. Hmmm  In the mean time, I'll work on my casing..  QUOTE(ongbs @ Aug 30 2008, 02:04 AM) .... Awaiting your "Inductor review" as well.... 
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jazzy939
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Aug 30 2008, 03:46 PM
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Well, on my meter, when selected to 2mH, with a resolution/accuracy of 1uH, a 10uH reading should be displaying 10, right?
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jazzy939
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Aug 30 2008, 03:52 PM
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ongbs, your meter 3 1/2 digit display? If the range selected is 2mH, what would be the expected display? Now I am confused! |
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jazzy939
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Aug 30 2008, 03:56 PM
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yes I will! in circuit testing is not really accurate due to the connections of other components.. If only I have a known value inductor to confirm the readings..  |
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jazzy939
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Aug 30 2008, 03:59 PM
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ongbs, my meter reading is 0.001mH,which translate to 1uH! QUOTE(ongbs @ Aug 30 2008, 03:40 PM) my meter read 0.05mH = 50uH. You may install your own made inductors, it won't harm the T-amp, just not sure how it affects the output SQ. As mine, I didn't notice obvious different |
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jazzy939
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Aug 30 2008, 06:01 PM
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I don't think it's my meter problem. It's new! What ever it is, I plan to replace the inductors for one channel only so that I can compare the toroid inductors to the stock ones.. will report later tonite. Whoa.. RM10 each? Could be worth a try but IF there would be any difference at all, worth the 10 bucks?  |
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jazzy939
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Aug 30 2008, 07:35 PM
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mysghooi, I dont have the time to get your PSU yet. In the mean time do you have an alternative power supply? Anyway, Welcome to the TAFC! (T-Amp Fan Club) QUOTE(mysghooi @ Aug 30 2008, 06:41 PM) Wah, yesterday just received my t-amp from xtorm. Soo... small. Hope to received my smps as soon as possible from jazzy. So I can have my time to test out this baby. |
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jazzy939
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Aug 30 2008, 07:39 PM
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I have been reading (as usual), the air core inductors as one DIYer found out, it improves the bass as opposed to the treble.. this I need to find out and verify! Also I have seen pixs of the T-Amp from some china forum, most of the moded boards left the stock inductors intact.. there must be a reason why.. Link here: bbs.hifidiy.netQUOTE(xtorm @ Aug 30 2008, 07:08 PM) but actually...whether the value correct or not it sounded great!!! hahaha, evenbetter then the surelectronics board changing from ferite to aircoil should make noticeable difference. changing from coil to toroid shuld have difference too haha...wait till you listen to the sound  the packaging good? ongbs, eh measure those smd cap beside the coil ler...hehe, but need to take it out, too bad didnt bring my father meter here |
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jazzy939
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Aug 30 2008, 08:32 PM
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Duly noted. Managed to get your distributor? |
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jazzy939
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Aug 30 2008, 10:32 PM
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xtorm, that power amp uses discretes... that explains the good sound.. |
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jazzy939
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Aug 30 2008, 10:42 PM
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You got lucky I supposed! This thread is getting quiet...  I am still troubled by the 1uH measured on the stock inductor.. However I have removed two from one channel and will install the toroid inductors shortly.. |
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jazzy939
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Aug 30 2008, 10:50 PM
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Making a 1uH is easily done! Maybe it's not really worth the trouble.. I dunno ler.. But we'll see how it goes later.. Waiting till later for audition. Late night listening can reveal a lot more details.. |
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jazzy939
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Aug 30 2008, 11:01 PM
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So, I guess it sounds as good as it's looks!  QUOTE(xtorm @ Aug 30 2008, 10:55 PM) haha true... im admiring those USAmps phot...really wow!! |
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jazzy939
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Aug 30 2008, 11:54 PM
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UPDATE:Just installed the two 10uH toroid inductors onto the first board with 2.0uF input caps. Commenced audition around 2330 hrs... Stay tuned! This post has been edited by jazzy939: Aug 30 2008, 11:55 PM Attached thumbnail(s)
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jazzy939
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Aug 31 2008, 12:05 AM
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hehe Only a little bit.. wait till I come out with the review... This post has been edited by jazzy939: Aug 31 2008, 12:08 AM |
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jazzy939
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Aug 31 2008, 12:09 AM
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Nahhh.. this won't be long.. nothing too major. QUOTE(ongbs @ Aug 31 2008, 12:07 AM) aiyo...i afraid need to wait you burn till morning again |
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jazzy939
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Aug 31 2008, 12:15 AM
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mysghooi, RM100 is wayyyy too much!!  Get the regulated one. How much for it? QUOTE(mysghooi @ Aug 31 2008, 12:11 AM) hi jazzy, today I have go to the electrical shop. They have only sell the SMPS 12V 5A for RM100. Wah tooo expensive right? and there is a regulated and unregulated regulator with 12V 3A. Which one is suitable? |
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jazzy939
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Aug 31 2008, 12:20 AM
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Only 2 bucks difference? For a ready made 12VDC 3A, I'd say it's acceptable!  Anyone else can get it cheaper? QUOTE(mysghooi @ Aug 31 2008, 12:16 AM) regulated for RM32, and unregulated for RM30 is the price expensive? |
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