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Class D Switching Power Amplifiers and Power D/A conversion

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Old 3rd November 2010, 07:59 AM   #991
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Location: Rome, Italy
Quote:
Originally Posted by Bernie7 View Post
Thanks for sharing.

With the chassis I have, it'd be difficult to squeeze in 2 smps'. Easier to put in two 300VA torroids.

Anyone has built T3 with torroids?
Also what about the T3 temperatures? The heat sink seems a little bit small to me. Your experiences?
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Old 3rd November 2010, 06:34 PM   #992
Opher is offline Opher  Israel
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Join Date: Oct 2010
Default V2 based power amp?

I plan on using the pre-outs from my AV receiver hooked into a v2 board.

Is there a general accepted practice in turning the v2 into a Power Amp?
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Old 3rd November 2010, 08:12 PM   #993
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Location: North Carolina,
Default v1.1b power switch is bad.

The switch on my v1.1b stays on when turned off,
I was curious has anybody else had this problem,
I am just unplugging SMPS to turn it off.

Last edited by bigaudioscotto; 3rd November 2010 at 08:39 PM.
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Old 4th November 2010, 11:48 AM   #994
alkasar is offline alkasar  France
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Hello Hifimediy,
have you considered to design a board with TK2350 ?
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Old 4th November 2010, 01:01 PM   #995
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Quote:
Originally Posted by bigaudioscotto View Post
The switch on my v1.1b stays on when turned off,
I was curious has anybody else had this problem,
I am just unplugging SMPS to turn it off.
Hi, just reply your message. I think it's the problem of relay.
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Old 4th November 2010, 01:03 PM   #996
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Originally Posted by alkasar View Post
Hello Hifimediy,
have you considered to design a board with TK2350 ?
not yet. Any idea? I think T3 is powerful enough for most of us.
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Old 4th November 2010, 02:01 PM   #997
alkasar is offline alkasar  France
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Location: near Paris, France
Quote:
Originally Posted by hifimediy View Post
not yet. Any idea? I think T3 is powerful enough for most of us.
T3 has a lot of power yes no doubt. However, TK2350 has excellent carateristics.
It is close to TA3020 at cheaper price. It could be a high power high quality stereo amp. (close to 2x200W in 4ohms at 0,05% THD)
I was just wondering why this excellent tripath chip gets so little interest in the DIY community.
Click the image to open in full size.
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Old 4th November 2010, 05:02 PM   #998
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Location: North Carolina,
Default v1.1b relay problem.

will I need all 3 relays replaced.
or just the black one where the power
comes in.


Quote:
Originally Posted by hifimediy View Post
Hi, just reply your message. I think it's the problem of relay.
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Old 4th November 2010, 09:52 PM   #999
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Join Date: Sep 2006
Location: Malta, Europe
Quote:
Originally Posted by bigaudioscotto View Post
The switch on my v1.1b stays on when turned off, I was curious has anybody else had this problem, I am just unplugging SMPS to turn it off.
This has happened to me also, but during the first week or so it functioned properly. Checked the switch with a multimeter and it was OK. Wrote to hifimediy and they said it could be a defective connection, but this wasn't the case. To cut a long story short we exchanged a number of emails and I thought they were being evasive. I packed it temporarily and switched to my previous amp hoping the problem would crop up on this thread.

May I suggest you too write to hifimediy and hopefully now that the problem has surfaced here they will do something about it.

JA
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Old 4th November 2010, 10:09 PM   #1000
ericg is offline ericg  France
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Quote:
Originally Posted by bigaudioscotto View Post
The switch on my v1.1b stays on when turned off,
I was curious has anybody else had this problem,
I am just unplugging SMPS to turn it off.
Few page earlier, same problem for me. The relay stay stuck. Just hit it a little bit, it should release by itself.
Hifimediy has to find a solution to this problem, it is not an isolated one.

Eric
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