E-Bay Amp, was a gift

dmongrain · 10th February 2009, 02:09 AM

So my great wife was seeing how much I have started researching my newly found hobby and decided to give me a little gift. She went on e-bay and got me a pre-assembled gainclone amp. Needless to say, I was pretty happy to get it. I started doing a little research on it and found it on this site:

http://www.elecsky.com/index.php?mai...&products_id=2

It looks a little shady to me, the caps on my board have the same values on them, but are 'RX27' on the top label (RX21 in the pic), so are obvious knockoffs.

I was trying to get some detailed info on how to wire the unit together and any general ideas that you may have about the board.

john65b · 10th February 2009, 03:05 AM

I wish my wife was as nice as yours. Mine rolls her eyes back into her head when we discuss my little hobby.

Download the app note on the ebay auction for the LM3886 chip amp - pretty basic connections.

Not a bad price all in all including assembled and with heat sink...

dmongrain · 10th February 2009, 03:20 AM

Well, I do have to admit that I am pretty lucky!

Where do you see that ebay auction app note? Do you have a link? I am pretty confident doing work that someone else has verified, but I am at a loss when I need to figure it out myself.

I would rather ask for help then make a mistake when working with electricity, better to admit that I don't know then to end up proving Darwin's theory is right......

john65b · 10th February 2009, 03:32 AM

Near the bottom of the auction...look for the App note LM3886 link...

lgreen · 10th February 2009, 03:36 AM

App note is here

Brian GT manual is here

these will prob help you out.

I don't see any diodes on your boards. Hopefully they are just out of the camera angle.

But the price was good and they look pretty. you should be able to get something nice out of them.

dmongrain · 10th February 2009, 04:07 AM

there are no diodes, but there is a rectifier board on it, does that do the same thing?

pacificblue · 10th February 2009, 05:04 AM

Yes, it does the same thing.

dmongrain · 10th February 2009, 05:06 AM

So there is one rectifier board for two outputs, does this make sense? I guess that I just have to run two wires off of one output to each input (v-, v+ and ground)

pacificblue · 10th February 2009, 07:08 AM

Exactly.

lanchile · 11th February 2009, 03:46 AM

Wow,I wish I had a wife like yours.Mine does not care a bit of my staff.Congratulation dmongrain and make sure for this Valentine's day She gets something nice.

10th February 2009, 02:09 AM	#1
dmongrain diyAudio Member Join Date: Oct 2008	E-Bay Amp, was a gift So my great wife was seeing how much I have started researching my newly found hobby and decided to give me a little gift. She went on e-bay and got me a pre-assembled gainclone amp. Needless to say, I was pretty happy to get it. I started doing a little research on it and found it on this site: http://www.elecsky.com/index.php?mai...&products_id=2 It looks a little shady to me, the caps on my board have the same values on them, but are 'RX27' on the top label (RX21 in the pic), so are obvious knockoffs. I was trying to get some detailed info on how to wire the unit together and any general ideas that you may have about the board.

10th February 2009, 03:05 AM	#2
john65b diyAudio Member Join Date: Jan 2005 Location: Chicago	I wish my wife was as nice as yours. Mine rolls her eyes back into her head when we discuss my little hobby. Download the app note on the ebay auction for the LM3886 chip amp - pretty basic connections. Not a bad price all in all including assembled and with heat sink... __________________ "I speak Spanish to God, Italian to Women, French to Men, and German to my Horse" - Charles V

10th February 2009, 03:32 AM	#4
john65b diyAudio Member Join Date: Jan 2005 Location: Chicago	Near the bottom of the auction...look for the App note LM3886 link... __________________ "I speak Spanish to God, Italian to Women, French to Men, and German to my Horse" - Charles V

10th February 2009, 03:36 AM	#5
lgreen diyAudio Member Join Date: May 2003 Location: San Diego, USA	App note is here Brian GT manual is here these will prob help you out. I don't see any diodes on your boards. Hopefully they are just out of the camera angle. But the price was good and they look pretty. you should be able to get something nice out of them. __________________ My DIY audio projects- PartTimeProjects.com.

10th February 2009, 05:04 AM	#7
pacificblue diyAudio Member Join Date: May 2008	Yes, it does the same thing. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)


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10th February 2009, 03:20 AM	#3
dmongrain diyAudio Member Join Date: Oct 2008	Well, I do have to admit that I am pretty lucky! Where do you see that ebay auction app note? Do you have a link? I am pretty confident doing work that someone else has verified, but I am at a loss when I need to figure it out myself. I would rather ask for help then make a mistake when working with electricity, better to admit that I don't know then to end up proving Darwin's theory is right......

10th February 2009, 04:07 AM	#6
dmongrain diyAudio Member Join Date: Oct 2008	there are no diodes, but there is a rectifier board on it, does that do the same thing?

10th February 2009, 05:06 AM	#8
dmongrain diyAudio Member Join Date: Oct 2008	So there is one rectifier board for two outputs, does this make sense? I guess that I just have to run two wires off of one output to each input (v-, v+ and ground)

10th February 2009, 07:08 AM	#9
pacificblue diyAudio Member Join Date: May 2008	Exactly. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

11th February 2009, 03:46 AM	#10
lanchile diyAudio Member Join Date: Sep 2008	Lucky dog! Wow,I wish I had a wife like yours.Mine does not care a bit of my staff.Congratulation dmongrain and make sure for this Valentine's day She gets something nice.

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