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another chinese amp - SXT-2 - Page 3

post #31 of 77
8/4/07 at 9:47am
Quote:
Originally Posted by palchiu View Post
I got my SXT2 Specical Edtion, pics will posts later.

I ordered mine with full upgrade resistors and coupling caps.
where from? and how much was delivery?
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post #32 of 77
8/4/07 at 9:57am
Quote:
Originally Posted by palchiu View Post
I got my SXT2 Specical Edtion, pics will posts later.

I ordered mine with full upgrade resistors and coupling caps.
I would love to see pictures of your amp!
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post #33 of 77
8/4/07 at 11:19am
This amp looked very promising, then fell off the radar.

Any comments on sound quality?
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post #34 of 77
8/4/07 at 11:52am
Quote:
Originally Posted by tourmaline View Post
coupling caps are for tube amps. i didn't see any tube on the pictures of that tx2.
I see these are used to tweak the low frequency sound. Your version might have better low frequency responce, tighter bass.
Sorry, my mistake! SXT-2 is a SS amp.

Quote:
Originally Posted by cotdt View Post
very interesting amp! hopefully the fan is quiet, though.
The fan isn't "on" all the time, should only turn when overheat or fullpower(use it as a speaker amp).

Quote:
Originally Posted by d-cee View Post
where from? and how much was delivery?
I bought it from Master 甩袖湯, the only way to have the beast.
And my family hand carry for me, it's almost 20kg.

Quote:
Originally Posted by swt61 View Post
I would love to see pictures of your amp!
Here we go~
Inside



VR is stepped, not ALPS. Resistors are Philips 1% and 0.1% for signal path.

The white MKP2000 caps is not standard

Nice finished.

Two box design, small one is power box.

Ha, pics with Supra.

See, bigggg.. heatsink in one piece. SXT-2 can drive speakers(8 ohms up).
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post #35 of 77
8/4/07 at 3:10pm
looks quite nice. If the cooling fan is used to cool the transistors or mosfets, it's in favour of active cooling. I just made a custom active cooling system for my modded amp and it makes a huge difference.

I see there is some room to furhter enhance the amp. Hmm, i see the mosfets/transistors screwed to the bottomplate at the left and right near the parallel caps. That's why he's using a huge cooling system as bottomplate, to dissapate the heat of the transistors/mosfets. I am baffled as to why he is using active cooling in that particular place, since the transistors are not even close to the cooling system. Ah, i see, the fan sits there to actively cool the massive bottom heatsink. it was much betetr to put 2 cooling fans above the 2 x2 parallel transistors/mosfets. Direct, active cooling has huge impact on sound.

I would change the white caps for oils or teflon caps, they are in parallel. It will considderably improve sound quality.

powersection looks very decent though, i see elna cerafine's and black gates? Overall very decent.

If the amp is biased in class a, you would have at least 8-10 watts of pure class a power; with high efficiency speakers say above 90db, you could have a nice rig.
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post #36 of 77
8/4/07 at 3:23pm
How can we go about making this thing available to the HeadFi crowd without jumping through a ton of hoops?

edit : too everyone that is concerned about the noise of the fan, if it is loud, I'm sure it could be replaced with a top of then line unit relatively easy.
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post #37 of 77
8/4/07 at 3:39pm
Quote:
Originally Posted by null infinity View Post
How can we go about making this thing available to the HeadFi crowd without jumping through a ton of hoops?
they look pretty nice..i want one too
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post #38 of 77
8/4/07 at 6:51pm
Attractive looking amp. How does it sound??
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post #39 of 77
8/4/07 at 7:53pm
palchiu, got impressions of the sound?
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post #40 of 77
8/4/07 at 8:14pm
Is there something hiding under that fan? Which direction is the air moving. Into the picture or out?
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post #41 of 77
8/4/07 at 8:15pm
look like there's not much of chance of getting this product oversea,
according to this thread by the creator of this amp on :
http://www.erji.net/read.php?tid=126...toread=&page=1

it seem like it's a one man company. to order people have to line up in
the queue, and even their order are accepted, the waiting period is 2 months.
i just pm the designer, asking if he can ship oversea to australia
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post #42 of 77
8/4/07 at 9:14pm
Quote:
Originally Posted by tourmaline View Post
looks quite nice. If the cooling fan is used to cool the transistors or mosfets, it's in favour of active cooling. I just made a custom active cooling system for my modded amp and it makes a huge difference.

I see there is some room to furhter enhance the amp. Hmm, i see the mosfets/transistors screwed to the bottomplate at the left and right near the parallel caps. That's why he's using a huge cooling system as bottomplate, to dissapate the heat of the transistors/mosfets. I am baffled as to why he is using active cooling in that particular place, since the transistors are not even close to the cooling system. Ah, i see, the fan sits there to actively cool the massive bottom heatsink. it was much betetr to put 2 cooling fans above the 2 x2 parallel transistors/mosfets. Direct, active cooling has huge impact on sound.

I would change the white caps for oils or teflon caps, they are in parallel. It will considderably improve sound quality.

powersection looks very decent though, i see elna cerafine's and black gates? Overall very decent.

If the amp is biased in class a, you would have at least 8-10 watts of pure class a power; with high efficiency speakers say above 90db, you could have a nice rig.
SXT2 is in Class-A, the heatsink is become warm(not hot) last night.
The caps are Silmic and LPO.
Output power:
Load resistance Balanced Unbalanced
(Phone jack) (High Idle Current/Low Idle Current) (High Idle Current/Low Idle Current)
600Ω 540mW/ 540mW 135mW/135mW
300Ω 1080mW/1080mW 270mW/270mW
120Ω 2700mW/2700mW 675mW/675mW
64Ω 5060mW/5060mW 1265mW/1265mW
32Ω 10125mW/2680mW 2530mW/2530mW
16Ω 7520mW/1340mW 7520mW/1340mW
(speakers) Balanced( Without common grand)
32Ω 10125mW/2680mW
8Ω 3760mW/ 670mW
4Ω(no suggestion) 1880mW/ 330mW

Quote:
Originally Posted by null infinity View Post
How can we go about making this thing available to the HeadFi crowd without jumping through a ton of hoops?

edit : too everyone that is concerned about the noise of the fan, if it is loud, I'm sure it could be replaced with a top of then line unit relatively easy.
Quote:
Originally Posted by kamal007 View Post
they look pretty nice..i want one too

Quote:
Originally Posted by Agent Kang View Post
Attractive looking amp. How does it sound??
Quote:
Originally Posted by cotdt View Post
palchiu, got impressions of the sound?
Sorry, it's brand new one. I will write a short review later, but English is a pain to me.

Quote:
Originally Posted by slwiser View Post
Is there something hiding under that fan? Which direction is the air moving. Into the picture or out?
Under the fan did not hide anything. You may see the PCB.


Quote:
Originally Posted by minivan View Post
look like there's not much of chance of getting this product oversea,
according to this thread by the creator of this amp on :
http://www.erji.net/read.php?tid=126...toread=&page=1

it seem like it's a one man company. to order people have to line up in
the queue, and even their order are accepted, the waiting period is 2 months.
i just pm the designer, asking if he can ship oversea to australia
Oversea order isn't the problem, but you need patience to waiting for.
The designer甩袖湯 will finish every SXT-2 by himself.
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post #43 of 77
8/4/07 at 9:16pm
does he ship to china? my relatives live there.
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post #44 of 77
8/4/07 at 11:53pm
Quote:
Originally Posted by cotdt View Post
does he ship to china? my relatives live there.
He is in China.
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post #45 of 77
8/5/07 at 10:37am
I don't need to be teased anymore with things I cannot get without jumping through hoops. My ex-girlfriends have put me through enough of that for 5 lifetimes.
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