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Old 5th June 2010, 03:35 PM   #171
teamacc is offline teamacc  Netherlands
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Quote:
Originally Posted by v-bro View Post
Nice preamp module, it is certainly suitable!

Only I would advise to reflow all the solders once more, the kind of (or rather lack of...) soldering I see on the pics would get me fired in my daily job...

Click the image to open in full size.
LOL at unclear ebay page:
Quote:
Note:this kit is not completed,you need solder it by yourself.if you want to buy the completed,pay me more 7GBP.

This is the finished board.
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Old 6th June 2010, 11:03 AM   #172
Galgo is offline Galgo  Israel
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Quote:
Originally Posted by Nick122147 View Post
Thanks Gal for your thoughts!

I just want to add that the recent discussed board (2*50W) is not supposed to be an upgraded version of the current one. It's another product using one chip to make 2*50W.
There are some discussions and recommended upgrades for the "regular" TK2050 (2*100W) board as well -
So just to make sure :

1) When will the NEW Single Chip (2*50W) version be available? What will be the MAIN added value of it Vs. the "regular" version? Better sound? Cheaper? Smaller?1)

2) When will the UPDATED version of the original TK2050 (2*100W) board is estimated to be out (if at all?!)? What will be the most significant changes (relays? pots? etc...)?

3) Anything else is expected in the near future ?
PSU / DAC / Preamp modules?
I'd love to see what our dear friend Hifimediy surprise us with

Have fun,
Gal
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Old 6th June 2010, 01:37 PM   #173
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Hey Guys
What would be best as far as Meanwell smps to use
with this board,24v what amp rating.
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Old 8th June 2010, 10:11 PM   #174
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I bought the Meanwell SP-240-30, it gives you 30vdc: perfect for this module.

Question: is there any benefit of adding an additional PS capacitor after the SMPS ?
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Old 8th June 2010, 10:25 PM   #175
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Why would you do so ? There are capacitors in the SMPS and there is a big one on the amp PCB. An extra one would not make things significantly better and it would cause extra wiring. There should be good caps in the SMPS. The big filter cap on the amp PCB is of good quality so count that one out and check the SMPS what caps are inside.

I would rather replace the capacitors in the SMPS for types that stay alive/sound good/measure good ( choose what you prefer most ). I don't know the Meanwell type you describe but most SMPS I see are full of bad to mediocre quality electrolytic caps that decide to quit being a capacitor after a year or so ...
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Last edited by jean-paul; 8th June 2010 at 10:30 PM.
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Old 8th June 2010, 10:47 PM   #176
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I forgot about the Nichicon cap on the amp module, no reason to change that.

I just opened my Meanwell SP-240-30 to check what's inside and the components are of good quality, as caps I see Rubycon YXG, nice :-)
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Old 9th June 2010, 04:20 AM   #177
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Quote:
Originally Posted by Galgo View Post
There are some discussions and recommended upgrades for the "regular" TK2050 (2*100W) board as well -
So just to make sure :

1) When will the NEW Single Chip (2*50W) version be available? What will be the MAIN added value of it Vs. the "regular" version? Better sound? Cheaper? Smaller?1)

2) When will the UPDATED version of the original TK2050 (2*100W) board is estimated to be out (if at all?!)? What will be the most significant changes (relays? pots? etc...)?

3) Anything else is expected in the near future ?
PSU / DAC / Preamp modules?
I'd love to see what our dear friend Hifimediy surprise us with

Have fun,
Gal
1) Maybe in one month. Will probably sound a little bit different. Less power. Should be same physical size.

2) No update is planned yet. This board already have the 24V relays.
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Old 9th June 2010, 04:25 AM   #178
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Quote:
Originally Posted by joesan View Post
Thanks Vbro for the quick reply. I'll take your advice and add some solder - I'm up to that.

Can you outline roughly what I'd need to do to connect this up - is it as simple as connecting the output from the pre-amp board to the input of the amp? And do I have to remove or short out the pot that's already on the power amp board?
Connect output from preamp to the input of this board. You don't have to, but it would be best to short the pot on this board. I think thats done easiest by making a short between the input and output on the pot. Any more comment on this?
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Old 9th June 2010, 04:31 AM   #179
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Default Single Chip Board for 5.1/7.1

If a single chip version of this board (2*50W) could be easily bridged to create 1*100W, it would be useful for people building 5 or 7 channel surround sound systems (i.e., who need an odd number of channels), or for people who only need a mono subwoofer amplifier. I'd buy one.
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Old 9th June 2010, 04:48 AM   #180
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Quote:
Originally Posted by SoldierAnt76 View Post
If a single chip version of this board (2*50W) could be easily bridged to create 1*100W, it would be useful for people building 5 or 7 channel surround sound systems (i.e., who need an odd number of channels), or for people who only need a mono subwoofer amplifier. I'd buy one.
yes thats a good point.
How to bridge it?
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