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4th February 2006, 12:59 AM
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#1 |
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diyAudio Member
Join Date: Nov 2004
Location: New Zealand
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LM3875-semi finished
This was finished about 2 months ago. Had it running ever since with no problems. A lot better sound than my first one, which was just the standard power boards from Brian. This one has a bigger Tran- 225, and filter caps with a couple of bleeder resistors. I also replaced the rectifiers for some beefier bridges and also added snubbers (22nf 1000v poly's). And I know there's been a lot of talk about those. Do they make it sound better? who know as i've made a number of changes from the first one. But they are in now and thats where they are staying.
The front panel has come off on the power supply box, as i'm thinking about changhing it, didn't like the first one. I only wish i had a bench saw and a really good quality drill press to make the work accurate.......... I'm working on the mrs as this is written, for my allowance to be increased  .Cheers Brett
__________________
I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX. |
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4th February 2006, 01:01 AM
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#2 |
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diyAudio Member
Join Date: Nov 2004
Location: New Zealand
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Some pics
This is the front. Made the knob from two bits of purspex and glued them together. Then sanded the whole lot with wet and dry
__________________
I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX. |
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4th February 2006, 01:02 AM
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#3 |
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diyAudio Member
Join Date: Nov 2004
Location: New Zealand
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Powers supply
Just a shot of the back
__________________
I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX. |
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4th February 2006, 01:04 AM
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#4 |
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diyAudio Member
Join Date: Nov 2004
Location: New Zealand
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Rear view
The cable was made from plastic tube and the connectors were heated so that the cable could be pushed into them with a good tight fit
__________________
I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX. |
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4th February 2006, 01:06 AM
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#5 |
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diyAudio Member
Join Date: Nov 2004
Location: New Zealand
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The main amp
I thought that the heat sinks might get a bit hot for this kind of set-up. But seems to be o.k at the moment
__________________
I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX. |
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4th February 2006, 01:09 AM
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#6 |
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diyAudio Member
Join Date: Nov 2004
Location: New Zealand
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Rear of the power supply
I screwed the wires from the fectifier onto a plate so that if the cable was ever pulled, it would effect the enternal wiring.
__________________
I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX. |
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4th February 2006, 02:00 AM
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#10 |
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diyAudio Member
Join Date: Nov 2004
Location: New Zealand
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Cheers
Thanks carlos,
I had to build this from stuff i had. I really like alluminium, but it's just sooooo expensive here. Thats why i went out and bought a 2.5 metre length just to make this. It was cheaper than buying a special heat sink in the shops. God knows what I'm going to do with all the rest of it......  Brett
__________________
I realized that a major part of my job was to figure out how to use technology control to create economic force, or leverage, such that money and business flowed in Microsoft's direction” — Alex St.John, father of DirectX. |
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