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#1 |
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diyAudio Member
Join Date: Jun 2005
Location: West London
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I have plucked up the courage to try making something from a diagram
I made the most of the CarlosFM snubberised PSU board and have added it between the rectifier and amp on my rev 3 LM3875 kit.I left out 1 of the 10,000 uF caps in case.. 1) they exploded when I plugged it in - I bet they really do go bang too - they're pretty big... 2) they take up more space than I have spare in the case ((I actually put a bike crash helmet on to switch it all on for the first time again.... ))Anyway, its been going for 1/2 hour and hasn't gone bang yet. ![]() I was a bit worried because I don't have a common ground - it's a dual mono kit - I have +ve / 0 and 0 /-ve but worked out which way to put the caps (I'm new to electronics... can you tell )The sound which was already beautifully clear and detailed seems possibly slightly fuller - the bass is punchier - the speakers I'm using aren't great for bass so the difference may be more obvious. The biggest change is how much louder I can turn up the preamp before any distortion - it goes loud enough for the sound to be completely enveloping now - I'm well chuffed..... again. ![]() I'm getting another set of bits to do the same for the other 2 channels tomorrow. Thanks to CarlosFM for creating it and for making the design available ![]() quickshift = happy bunny
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#2 |
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diyAudio Member
Join Date: Aug 2004
Location: Princeton B.C.
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This is what I did;
added nichicon 4700uf 50v; bypassed with sangamo .001uf axial non polar cap and snubber is .47ohm 1 watt to 100nf metal poly cap. |
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#3 |
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diyAudio Member
Join Date: Aug 2004
Location: Princeton B.C.
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The result is: more swing,resolution, better defined bass, a much quieter background. You can hear more detail.It gets you in a little closer.
the pic shows the 2 channels, one not modified cheers doggy
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