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Old 13th January 2014, 11:38 PM   #1
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Default Newbie ACA build!

I've been lurking on this board for years and I finally thought I would dive in a give it shot at building my own amp. I'm the type of person who usually figures things out by taking things apart, I've got a pretty decent amount of experience with basic electrical and most of my electrical experience comes from HVAC and building automation and controls. I've a very rough idea of how this amp works and I am fairly confident I can put it together and have it work, but the main goal here for me is figuring out what the purpose of each componant in this amp is.

I only purchased the componant kit, not the enclosure or power supplies. I've been wanting to give building amp a shot for a while now, so I've been collecting parts and putting them aside just incase.

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Old 13th January 2014, 11:47 PM   #2
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All kidding aside, I'll probably only being using the heatsink as a temporary test bed, possibly the recitifier as well, again just for testing. The two chokes and the capacitors, if they ever get used will be for novelty use only.


The heatsink (16"x12"x3"), I'm only going to use to test out the amp(s) until i can build a proper enclosure. Though I am tossing around the idea of cutting it down and using it as a base with the fins as legs. Given the size and mass of this thing, I'm guessing heat disappation won't be an issue even with the fins down.

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Last edited by IntheBatCave; 13th January 2014 at 11:59 PM.
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Old 13th January 2014, 11:59 PM   #3
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Here is what I actually have completed so far, this is the first time I've done more than basic repairs on a circuit board, and I think it came out pretty good. I know some people soldered the 2.2k resistor to the back side of the board but when I was laying it out that way it made me twitch. To get both componants in the same hole I ended up using a oxy/acetylene tip cleaner/reamer to open up the holes a hair. Since I did remove a bit of copper in the hole that connects the trace from the back to the front of the board, I made sure I soldered them on the front and back. And since having just a couple componants soldered on both side also made me twitch, I went ahead and soldered everything I could from both sides. Whether or not that decision comes back to bite me in the rear has yet to be determined.
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Old 14th January 2014, 12:03 AM   #4
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Oh and incase anyone is wondering, all of the "collected parts", came from a variable frequency drive for a 460v 3phase 50hp supply fan motor, that bit the dust during a thunderstorm several years back.

For the first of what will probably seem like stupid questions to me looking back... I know the kit specs a 19v power supply, but how flexible +/- is that voltage range?

Last edited by IntheBatCave; 14th January 2014 at 12:06 AM.
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Old 14th January 2014, 01:11 AM   #5
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say 18 to 40
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Old 14th January 2014, 01:24 AM   #6
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Good to know, that will make putting a power supply together much easier.
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Old 14th January 2014, 04:26 PM   #7
WalterW is offline WalterW  Netherlands
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to 40 ??? FAB ?
I think C4 will give a nice 'kabooom'
Pa specified it to be 10uF 25V
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Old 14th January 2014, 05:27 PM   #8
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use da brain - conditio sine qua non

if you're using 6V3 cap with 40Vdc PSU , you deserve any punishment

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Old 14th January 2014, 05:55 PM   #9
WalterW is offline WalterW  Netherlands
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Hahaha, I always have to use Google translate to decipher your answers...
But me no smart...
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Old 14th January 2014, 06:09 PM   #10
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if you're not sure , all you need is to ask

go back - you can find all sorts of , even extreeeeemely dumb , questions - written by Mighty ZM

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