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Class D Switching Power Amplifiers and Power D/A conversion

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Old 9th October 2006, 05:59 AM   #11
cowanrg is offline cowanrg  United States
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well, here is a recently completed 5-channel UCD amp. this is a prototype.

the finished product.
Click the image to open in full size.

the guts! 5x UCD-180's, 800va transformer, soft-start module, panasonic power supply caps Click the image to open in full size.

the back plate. we are dubbing this one the lily 5.
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Old 9th October 2006, 11:44 AM   #12
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Quote:
Originally posted by novec
Nice! Might have reconsidered the power switch, though
What power switch? Thats my "keep company from using my stereo when I'm away" switch.

The on/off switch for the amp board is the one in the front.
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Old 9th October 2006, 12:48 PM   #13
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Default It was called X-1

300W+300W@8
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Old 9th October 2006, 02:36 PM   #14
novec is offline novec  Norway
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Quote:
Originally posted by theAnonymous1


What power switch? Thats my "keep company from using my stereo when I'm away" switch.

The on/off switch for the amp board is the one in the front.
Hehe, nice description You should probably write that on there somewhere

It was the on/off switch on the front I was thinking about. Something like this one would look pretty kickass, or something similar in black.
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Old 9th October 2006, 10:32 PM   #15
BWRX is offline BWRX  United States
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Default Re: It was called X-1

Quote:
Originally posted by drzhuang
300W+300W@8

It sure looks nice, but how did it sound? What kind of class d amp is it?
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Old 9th October 2006, 11:50 PM   #16
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Quote:
Originally posted by novec


Hehe, nice description You should probably write that on there somewhere

It was the on/off switch on the front I was thinking about. Something like this one would look pretty kickass, or something similar in black.
Ah, thought you were picking on my lockable amp.

I'm happy with it's 240v 20A toggle. It leaves plenty of headroom for the 5v 30ma passing through it. It also has a nice firm "click" when I flip it.

I do like that push-button switch though. It would look good on another project I'm doing. Can you tell me where you found it?
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Old 10th October 2006, 07:08 AM   #17
novec is offline novec  Norway
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Found it on ELFA, a Scandinavian electronics shop, so you could probably find something closer to home APEM is an international brand, with a big US department, so you should find something suitable here: http://www.apem.com/index.html. This one is from their anti-vandal series

Bulgin is another manufacturer of that kind of switches, but it's British, so I don't know if they have any US retailers.
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Old 10th October 2006, 07:33 AM   #18
SSassen is offline SSassen  Netherlands
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Here's a few pictures of my UcD400 dual-mono, albeit already a year old by now.

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Best regards,

Sander Sassen
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Old 10th October 2006, 08:28 AM   #19
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Sander,

That amp looks very sharp! You can barely expect a nicer lay-out and more attention to detail from any commercial party, congratulations.
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Old 10th October 2006, 10:02 AM   #20
novec is offline novec  Norway
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Nice one, Sander!

Would have gone for a slightly messier cable setup, though, to keep the signal cable away from the speaker cables. Dunno how much it will affect a coax-cable, but still.
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