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Chip Amps Amplifiers based on integrated circuits

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Old 10th April 2009, 05:27 AM   #1031
sasmit is offline sasmit  India
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that's gonna be one heavy duty amp ..literally
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Old 10th April 2009, 06:45 AM   #1032
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yea, very on the heavy side.
Also finished the controller for it, which is a timer based circuit that controls soft turn on, dethump, etc etc.

Click the image to open in full size.

I have more pics of it if anyone is interested.
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Old 10th April 2009, 06:50 AM   #1033
sasmit is offline sasmit  India
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Quote:
Originally posted by Rainwulf


I have more pics of it if anyone is interested.

yes..
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Old 10th April 2009, 07:06 AM   #1034
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In this thread will be ok?
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Old 10th April 2009, 08:42 AM   #1035
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it may be inappropriate but u can see all the pics by copying the image source location (right clicking the above image) and pasting in browser address bar.
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Old 10th April 2009, 04:28 PM   #1036
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Quote:
Originally posted by Rainwulf
In this thread will be ok?
Why not? That is the purpose of it, right?

I for one would like to see more pictures of Rainwulf's project.
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Old 10th April 2009, 05:45 PM   #1037
troystg is offline troystg  United States
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This is a chip amp, class-d, but still a chip amp.. Hardest one I have EVER assembled due to size.

I will be boxing it up this month. I have to make 3, one for me and 2 for friends.

Can I tell you I MUCH prefer hole through!!!!
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Old 10th April 2009, 05:47 PM   #1038
troystg is offline troystg  United States
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And the other side.


Wait 60 seconds to post....


5, 4,3,2,1.... POST!
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Old 11th April 2009, 04:38 AM   #1039
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Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
I have yet to put on snubbers. I have to get more MKT caps and the matching resistors, though at this point i dont know if i will worry.

Click the image to open in full size.

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The assembly the rotates 3 alps pots at the same time. Its to set the max level of the amp.

Click the image to open in full size.

Click the image to open in full size.


Click the image to open in full size.
LM3875 module with decoupler across the power pins.
The amps are also DC coupled. no Cin.

Click the image to open in full size.

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Temperature controller fans. Run very slow until the amp heats up a bit, which means loud music is playing, so you wont hear the fans anyway.

I dont have pics of it yet, but i have installed speaker cut of relays that stop any thumping on turn on, i have installed an earth loop breaker, and also a turn on surge limiter, as well as a slave circuit, so the amp is only on when the computer is on.

I can draw a circuit diagram of all that too if anyone wants. Very simple circuits.


More pics of it progress here. Big though.
Click the image to open in full size.
Thats the sub amp, obviously not a chip amp.

I even made my own speakers.
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Old 11th April 2009, 05:25 PM   #1040
ratza is offline ratza  Romania
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Looks great, are the pots controls motorized? The loudspeaker enclosure seems to be a little bit too small, how is the bass? (I also have the loudspeakers built by myself, but they are too ugly to post them They play great though.)
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