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Class D Switching Power Amplifiers and Power D/A conversion

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Old 9th November 2010, 12:12 PM   #1061
smithie is offline smithie  United Kingdom
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well i certainly shall be playing with different configurations and surplys once i get past that "lets quickly hook it up and see what it sounds like" urge
thanks to everyone for all there help in this matter ,im looking forward to trying them out.
just one quick question,as i need to split my xover before i can power each driver will the stereo boards be ok if im just using one channel from each in the short term?
smithie
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Old 9th November 2010, 01:02 PM   #1062
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Originally Posted by smithie View Post
just one quick question,as i need to split my xover before i can power each driver will the stereo boards be ok if im just using one channel from each in the short term?
smithie
In that case, it's best if you "null" the unused channel. Connect the unused channel's inputs to input ground, and then you'll probably want a resistor across the unused output. I don't know what value is best - probably 1K to 20K or something, and just a normal 1 or 2W resistor.
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Old 9th November 2010, 07:12 PM   #1063
smithie is offline smithie  United Kingdom
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well has i have alittle time till my stuff arrives i think ill make my crossovers so they can accept the two channels,its got to be done at some point so nows as good as any,thanks kristleifur for the tips on the amp if i was running 1 channel,but it sounds less hassle if i just sort the crossover
once again many thanks guys
smithie
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Old 10th November 2010, 12:03 AM   #1064
Havoc08 is offline Havoc08  Denmark
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Quote:
Originally Posted by kristleifur View Post
In that case, it's best if you "null" the unused channel. Connect the unused channel's inputs to input ground, and then you'll probably want a resistor across the unused output. I don't know what value is best - probably 1K to 20K or something, and just a normal 1 or 2W resistor.
These amps can't be paralleled instead?
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Old 10th November 2010, 09:19 AM   #1065
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Originally Posted by smithie View Post
i also couldnt resist those other power surply to try...just incase,as there so cheap,im always playing so im sure ill find a use for it...if anyone else is intrested

24V dc, IP67, 60W(2.5A) Meanwell Power Supply CLG-60-24 - eBay (item 110601163632 end time Nov-19-10 12:07:34 PST)
A 24V 2.5A smps is surely not the best choice, however I think that it could work quite well.
I still have to do some measurements, but for the *average* current absorption of the TK2050, 2.5A could be right.
Current absorption over 2.5A (max 4A for 100W) should happen only during peak demand, and the onboard capacitor should do the job.
Please do some test with both the power supplies and keep us informed.
I have to do some current absorption test on my T2 board...
Bye!
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Old 10th November 2010, 09:39 AM   #1066
smithie is offline smithie  United Kingdom
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hi don jerry
thanks for your findings and rest assured i shall try those small power surplys out and report back,i shall try whatever i have laying around and whatever i can get my hands on cheaply till ive made my own conclusions up
all the best
smithie
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Old 11th November 2010, 04:38 AM   #1067
jtjy is offline jtjy  Singapore
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is nick on vacation currently? paid couple of days ago but no reply yet lol.
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Old 11th November 2010, 06:47 AM   #1068
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Originally Posted by jtjy View Post
is nick on vacation currently? paid couple of days ago but no reply yet lol.
Hi, its getting shipped today! I normally don't send out any email until it's been shipped. guess i should sort out how to send out an automated response that I have received the order.
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Old 11th November 2010, 11:53 AM   #1069
jtjy is offline jtjy  Singapore
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Originally Posted by Nick122147 View Post
Hi, its getting shipped today! I normally don't send out any email until it's been shipped. guess i should sort out how to send out an automated response that I have received the order.
i see. i thought my payment didnt went through. Thanks nick.
also does DHL comes with tracking?
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Old 11th November 2010, 08:57 PM   #1070
Opher is offline Opher  Israel
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Default Could the V2 work with a Toroidal transformer?

Could a V2 board be powered by a toroidal instead of SMPS?

I would like to use a smaller case with a toroidal transformer. Is this possible? If so, would quality suffer?
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