ongbs,
Actually it's 19 inches but who's counting! :P

For 1uH it's just a foot/12 inches..

Casing? You liked the back cover eh?.. Just plain cover, 'brushed aluminium' finish.. I have been saving that casing for a special project.
The T-Amp deserves such a casing! :thumbs:

Anyway it's not really finished yet.. so feast your eyes on this preliminary pix!
Current config: Stereo power amplifier. Using my 2nd. board with 10uF input caps, NO toroid on this one(yet).
Next config: bi-amp using 1st board with 1uH toroid inductors and 2uF input caps.





This post has been edited by jazzy939: Sep 1 2008, 03:28 AM

xtorm,
the size of the wire will also affect the inductance, not to mention length
the wire that I used is 0.055mm dia. About a foot or 14/15 turns around the ferrite core to get ~1uH.

You like the casing eh? I did too! That was bought by a friend in Bangkok!
Sorry to say, you can't get it here,locally.

I am using a Nikon Coolpix 5700. Sharp eh? See it's pix at the bottom. Worth every ringgit I paid for it!

The casing is about 3000 Baht (do your own conversions) (ongbs, I answered that, k )

Hahaha, all these smileys wearing songkok one! Not even finished day one of puasa!

Guys, what color LED would you use in that kind of casing? Please don't say BLUE. Almost ALL LEDs on every electronic equipments are BLUE.. now blue makes it look 'cheap'...





This post has been edited by jazzy939: Sep 1 2008, 05:38 AM


Attached image(s)

ongbs,
not at all
Yep.. I thought so.. WHITE on the aluminium panel.. kinda 'sexy'
The brightness can be controlled by the series resistor..
I have some white LEDs but it's the little ones size about 3mm. including the LED mount.. what I afraid is that the installation of the LED,
wrong position/size will affect the good looking panel. But without anything right now, the front panel looks so 'naked' and bland..

Whoa.. those speakers are real heavy weights! 20kilos! Mine is only 18.. And boy, you've got an four drivers there.. wow! I can imagine what kind of sound you're getting! And all these driven by a 'tiny' little thing.. unbelievable ya!

Yeah.. I picked that 'kemek' tweeter right away.. it doesn't really affect the sound right.. only 'sakit mata'
Actually the tweeter can be 'returned to normal'.. have you tried or you don't want to risk damaging it further?

See attached LEDS pix.. decisions.. decisions...






Attached thumbnail(s)

It's hard to believe how much 'little' power you need to drive a high efficiency speakers.. and all this while i am driving my speakers with a 90+90Watter!

Looks like you have a potential modder in the family.. talents yet to be tapped!

Yes.. we're n the same wavelength here.. the little one, white flush mounted.. let me make a prototype mount/installation how well this would look.
Ooops.. when you mentioned it.. it certainly does... anyway, puasa cannot have 'dirty' thoughts.. hahaha
The important thing here is the look must commensurates with the excellent sound here.. hehe. Hari Raya can 'tayang' to the guests..

Since today is first day of puasa, nothing much to do except clocking the burn in hours for the amp..

Say, if you want to wound yourself the 'donut' inductors, they're RM1.20 each from NIXIE. You need four.
Copper wires they don't sell by the metres.. You have to asked around if they're kind enough to cut to measure..
Minimum purchase of 1 kg at RM71 per kilo. it's kinda 'too much'..
I am playing with the idea of using a heavier gauge wire for the inductors.. should lower the resistance and handle more current. Refer attached pix...







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xtorm,
1 kg of copper will make thousands of inductors! Nahhh, we just wanna make a few

There's an error of 3% with handheld.. but we don't need a highly precised inductor,do we?
This is audio..this is T-Amp.. precision? Whats 1uH between friends..

I am happy with my elcheapo LCR meter. 1uH difference wont make much difference anyway. You never know, 11 uH might sounds a little better than 10uH! Hahahaha.. we can only wish/dream!
BTW, Its 1uH that I want, NOT 10uH. Too mellow n laid back..

So how come the stock inductor is reading 1uH onmy meter and 50uH on ongbs's?

Okay, got it.. a bit slow today

In that case I am winding my inductors with reference to the stock inductance!
Therefore error or not, they "should be the same"..

Well who's counting the value? It's the end result that counts!

I guess the 5000euro will come in handy eh?

This post has been edited by jazzy939: Sep 1 2008, 07:07 PM

To those who are making their own casings (don't we all here?)

Where do you install the power switch if it's in front?
I was looking at my hifi and believe it or not, ALL of the power switches are located on the LEFT! As such, the power indicator is normally located at/near the power switch too. Wonder why is such a convention?

My casing for the T-Amp does not have a power switch. The 3 pin socket is the switch! Hehehe
In the absence of a power switch, where would the power indicator located? I have seen equipments normally power amps as they have NO or just one master switch, the switch and power indicator can be, well.. anywhere! No convention here..

The reason for this posting is, the front panel of my amp is too clean. Too clean as in NOTHING!
It just sits there, quietly producing great sweet music without a hint (visually)that it's 'operating'..
Based on ongbs input, I have decided to choose a WHITE LED (small 3 mm in size) as the indicator.. now, its location..location..location

Just want your opinions based on your housing. Can we have the pix of your casing too?

Y.C., balik kampung ka?

Whoaaa! That is humongous! Where did you get that? Dunkin' Donuts?
Thats about double my existing 'donuts'!
Can fit 4 of them on the board?

This post has been edited by jazzy939: Sep 1 2008, 08:24 PM

Nice link!
Wooden casing, nice eh? Not to mention, easy to work on!

How big is your casing eh?

Look at this casing. Its for a Gainclone. Love that alum. casing. Huge!!

This post has been edited by jazzy939: Sep 1 2008, 08:44 PM


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I am thinking about that too!

Oh shucks! Forgot about that! Here it is!

The empty space is for another board and 'some goodies' to be installed later..

hahaha.. I don't blame you!
Best 'bass' yet from these caps..

Elsewhere in another thread, I downloaded some music for testing sub-woofers..
I was mazed, the T-Amp handled it very well! I was teribbly impressed.

They're EPCOS 10uF 250V,metallized polyester film.
RM12.90 each from rsmalaysia.

I may also employ the 2.2uF, saw the EPCOS one from rsmalaysia for only about 9 bucks each!
The current 2.0uF(1uF+1uF) that I use is a bit 'grainy'...

Yes, most aluminium casings are really good looking.. it's the price that's gonna 'kill' you...

If you surf the gainclone webring, there's even more nice ones!

This post has been edited by jazzy939: Sep 1 2008, 09:46 PM

hey there!
Case bought by a friend in Bangkok, Thailand. Full brushed aluminium finish. 3000 Baht

Ohreally? Yes. Must be the same place.
The bulk is for what item? any links?

It's definite BIG if you're dealing with small items like headphone amps and the like..
But the finish is first class. worth every buck or rather bahts i paid for it.

xtorm,
I think it's worth the money..
Yep.. will definitely change to better cables..
BTW, those are not RS-485 cables. They are normal electrical 15A cables. I bought them in rolls from JP.

Sato mic cable? Where to get?

Once everyone have completed their T-Amp casing, you think this thread will close/'die'?

This post has been edited by jazzy939: Sep 2 2008, 10:19 AM

We can make this goes on and on and on.. yes?

There's always 'new things' that can be added..

BTW, Since using the 10uF input caps, I am experiencing a speaker 'thump' when powering the T-Amp.. Notreally that loud but sonically unconfortable.. I may install a speaker delay board, hence the space reserved in my casing..

No thumping experienced on the other board with 2uF input caps..

This is quite similar like mine except it's 'black body'.
I doubt it we can get it here in Malaysia...
Have NOT seen it in KL..

The shiny chrome finish is definitely nice.. this one kena custom made.. huge dent on the bank balance for sure!

Online purchase, the freight charges gonna be costly..

This post has been edited by jazzy939: Sep 2 2008, 12:11 PM

Eh? You also? During power up?
Would you be interested in 'anti-pop' circuit?

I don't know as it didn't cross my mind to check if the donut is getting hot or not. The tripath chip is kinda warm to the touch..

Will go home and 'touch' them doughnuts..