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DIY T-Amp User V2, TA2020 AIR CORES!, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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cyl1000
post Dec 30 2008, 06:51 PM

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QUOTE(jazzy939 @ Dec 30 2008, 06:38 PM)
How high is 'too high'? hmm.gif
*
Actually I cannibalize a Denon and Onkyo amp yesterday and got some parts out to use. I have change one of the pot for my friend's ailling JP pot. These pot still work well and I'm confident that I wont encounter same problem as JP pot (maybe I'm in bad luck). As for the transformer, it looks big and "solid" and would be a waste to throw it away..the smoothing caps is rated 50V, so I think the transformer secondary voltage should be around 40V?? Lets see if there is any use for other future projects or just keep in store...
ar188
post Dec 30 2008, 06:51 PM

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QUOTE(jazzy939 @ Dec 30 2008, 11:58 AM)
VR as in voltage regulator?
3V is what u need depending in LED types and the brightness that u want...
*
3V and above for white and blue and pure greens, InGAN dice

for red and amber/yellow, 2V-2.2V should be more than enuf.. or else poooofff....
jazzy939
post Dec 30 2008, 06:53 PM

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ar188,
I need some! Some blue ones would be nice! This is for my 'new' amp.. wink.gif

QUOTE(ar188 @ Dec 30 2008, 06:49 PM)
if you fellas want blue and white LEDs let me know.. give you free la.. got so much in the drawers...
*

Added on December 30, 2008, 6:56 pmcyl1000,
a 40V tranny would be a good candidate to power a GainClone! wink.gif


This post has been edited by jazzy939: Dec 30 2008, 06:57 PM
kww
post Dec 30 2008, 06:57 PM

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xtorm, ya see you there, give me a sms when you are leaving, i can be there in 15min.

I want to build a few RCA and phono cable, i only need it in short length, anyone know where can i get belden or canare or mogami? Or you have some to let go? i only need around 3m of each.
ar188
post Dec 30 2008, 06:58 PM

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QUOTE(jazzy939 @ Dec 30 2008, 06:53PM)
ar188,
I need some! Some blue ones would be nice! This is for my 'new' amp.. wink.gif

Added on December 30, 2008, 6:56 pmcyl1000,
a 40V tranny would be a good candidate to power a GainClone! wink.gif
*
sure.. 5mm 3mm SMD 1206 or 0805s? biggrin.gif

can demo your amp ar? I bring my AE near-field bookshelfs to test test.. hehe!
jazzy939
post Dec 30 2008, 07:00 PM

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kww,
I have seen belden and canare in JP but not mogami. I need to make a few interconnects too.. time to drop by JP tongue.gif
jazzy939
post Dec 30 2008, 07:03 PM

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ar188,
the 3mm would be sufficient.
Sure, can drop in anytime (I am on leave) as long as you bring over those LEDs! laugh.gif

AE bookshelves.. that would an interesting speaker to 'test'... wink.gif

QUOTE(ar188 @ Dec 30 2008, 06:58 PM)
sure.. 5mm 3mm SMD 1206 or 0805s?  biggrin.gif

can demo your amp ar? I bring my AE near-field bookshelfs to test test.. hehe!
*
kww
post Dec 30 2008, 07:06 PM

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jazzy, which shop? I seen some belden 85xx series speaker cable before 2 yr ago but not RCA or phono cable.
ar188
post Dec 30 2008, 07:09 PM

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jazzy, how big are your JP pots, the diameter of the back cover. 12mm 16mm etc? see if got any surplus 50k Log scale ones for you..
cyl1000
post Dec 30 2008, 07:12 PM

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QUOTE(jazzy939 @ Dec 30 2008, 06:53 PM)
ar188,
I need some! Some blue ones would be nice! This is for my 'new' amp.. wink.gif

Added on December 30, 2008, 6:56 pmcyl1000,
a 40V tranny would be a good candidate to power a GainClone! wink.gif
*
Will have to wait till I finish with the t-amp casing and also another t-amp with discrete... tongue.gif


Added on December 30, 2008, 7:14 pm
QUOTE(jazzy939 @ Dec 30 2008, 07:00 PM)
kww,
I have seen belden and canare in JP but not mogami. I need to make a few interconnects too.. time to drop by JP tongue.gif
*
I've seen some China Belden too tongue.gif

This post has been edited by cyl1000: Dec 30 2008, 07:14 PM
jazzy939
post Dec 30 2008, 07:15 PM

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Currently I have 2x 50K pots. They're 16mm ones.. don't know if they're linear or log.. tongue.gif Will check later...

QUOTE(ar188 @ Dec 30 2008, 07:09 PM)
jazzy, how big are your JP pots, the diameter of the back cover. 12mm 16mm etc? see if got any surplus 50k Log scale ones for you..
*

Added on December 30, 2008, 7:17 pmkww,
I can't really remember where.. hehe.. I bought my Canare from the shop right at the end of JP, LHS.

This post has been edited by jazzy939: Dec 30 2008, 07:17 PM
kww
post Dec 30 2008, 07:27 PM

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Jazzy, do you remember how much and model? I heard from friend L2T2S is good. But i never audit before. Any opinion?
jazzy939
post Dec 30 2008, 07:32 PM

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kmm,
off hand can't remember exactly,sorry dude. They're about RM9 per meter.
grandspy
post Jan 2 2009, 02:49 AM

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Can a computer PSU be used to power up the T-amp?
TSxtorm
post Jan 2 2009, 10:28 PM

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yes, as long as 12v dc smile.gif
jazzy939
post Jan 3 2009, 12:06 AM

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Definitely can!
My Jr. is using a spare computer's PSU to power his T-Amp... tongue.gif

QUOTE(grandspy @ Jan 2 2009, 02:49 AM)
Can a computer PSU be used to power up the T-amp?
*
grandspy
post Jan 3 2009, 12:18 AM

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Ok then. I have two comp. PSU. If anybody wants to have them, let me know. I think they're rated 400 watts. Else, I'll just throw them away. Err.. they're faulty though tongue.gif
jazzy939
post Jan 3 2009, 12:30 AM

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grandspy,
the Meanwell SMPS looks better and 'cuter' wink.gif with adjustable voltage! biggrin.gif
ar188
post Jan 3 2009, 12:55 AM

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QUOTE(jazzy939 @ Jan 3 2009, 12:30 AM)
grandspy,
the Meanwell SMPS looks better and 'cuter' wink.gif with adjustable voltage! biggrin.gif
*
definitely cuter..and available in wide single voltage range and formfactors...
besides no need 350W to 500W monster computer PSUs with fans and dangling cables...
jazzy939
post Jan 3 2009, 01:08 AM

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thats right ar188! computer's psu is real messy! tongue.gif

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