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#1 |
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diyAudio Member
Join Date: Sep 2008
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what tipe of transformer do i ned fo the LM 3886 KIT?
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#2 |
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diyAudio Member
Join Date: Jan 2008
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See http://myweb.tiscali.co.uk/nuukspot/...clone_psu.html
Basically, if you're driving 4 ohm loads, you want 18V-0-18V, and if you're driving 8 ohm loads, you want up to 25V-0-25V.....although some would recommend going a little bit lower. For a stereo gainclone, you'll want around 160VA. Using a 300VA can bring some improvements if you can afford it. |
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#3 |
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diyAudio Member
Join Date: Sep 2008
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thank you for you help.. i guest my cuestion is i have the ml 3886
kit dual mono and i don't know where to get the transformer from thank you..
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#4 | |
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diyAudio Member
Join Date: Feb 2004
Location: Chicago area
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Quote:
You can Avel-Lindberg transformers from Parts Express. http://www.partsexpress.com Recently I got a good deal on some 24-0-24 5A EI core trafos. You need two of those to get a 2 rail supply but sometimes the price is good enough to justify buying two. (I got six of them for $10/each. Worth it.) Part Express also has some like this but I think they are about $20 each so getting a toroidal is pretty comparable.
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--Sherman |
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#5 |
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diyAudio Member
Join Date: Sep 2008
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thank you for you help.. i guest my cuestion is i have the LM 3886
kit dual mono and i don't know where to get the transformer from thank you.. |
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#6 |
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diyAudio Member
Join Date: Jan 2008
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OK, I'll be more precise this time around.
If you're driving a 4 ohm load, buy: http://www.partsexpress.com/pe/showd...number=122-620 If you're driving an 8 ohm load, buy: http://www.partsexpress.com/pe/showd...number=122-615 If you're driving an 8 ohm load and want to spend a little bit more money for a small performance gain, buy: http://www.partsexpress.com/pe/showd...number=122-640 BTW: Not to do the moderators jobs, but please don't start new threads to ask the same question again. |
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#7 |
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Audio Junkie
diyAudio Member
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#8 |
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diyAudio Member
Join Date: Jan 2005
Location: Chicago
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40VCT for a Gainclone is too high, no?
Rectified, its over 55vdc. If I recall, the power supply for a gainclone would be 40VDC max@8ohm.
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"I speak Spanish to God, Italian to Women, French to Men, and German to my Horse" - Charles V |
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#9 |
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diyAudio Member
Join Date: Jan 2008
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Reading the other thread, he says there that it is a 20V CT, and supplies +/- 18V rectified, which doesn't sound quite right, and is rather on the low side for a gainclone.
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#10 |
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diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
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40VCT is the same as 20V-0-20Vac. This will give about +-30Vdc when offload, after rectification and smoothing.
A 20Vac-0 + 20Vac-0 dual secondary can be used equally well. The 20VCT will give about +-15Vdc after rectification and smoothing. If it's then regulated it can give only ~+-12Vdc at maximum. From the conflicting information that Zero is posting, I have no idea what he is offering. Does he know?
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regards Andrew T. |
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