Size of chipamp.com LM3886 Stereo Kit PCB

Flops · 20th November 2011, 07:05 PM

Hello diyaudio.com community,

I purchased a kit from chipamp.com recently and I want to start building the enclosure while the packet is traveling around the world.

Can someone tell me the size of the fully populated amplifier pcb? And does someone know which height it has when it's populated?

Thanks in advance,

~Flo

AndrewT · 20th November 2011, 07:09 PM

Don't.

Wait until you have the whole chipamp working with it's PSU and other parts. Then work out how to package the complete amplifier. Then buy the size you need.

Flops · 20th November 2011, 07:16 PM

The thing is I want to make a gift for a friend and I am in kind of a hurry, so I planned everything ahead.

AndrewT · 20th November 2011, 07:28 PM

I did similar last year.
Planned as an Xmas present. Apologised gave alternative and delayed till Feb Birthday. Delayed and apologised again. Finally delivered April.
She loves it, but it took a lot longer than I planned.

My usual time line when in industry. Guess how long it will take and double it.
Eventually everyone learns I take twice as long as that doubled estimate.
I still work to that rule, think of a time and quadruple it.

Flops · 20th November 2011, 07:35 PM

I don't want myself to encounter the same problems, that's why I need the size of the board.

Minion · 20th November 2011, 07:41 PM

I agree with Jim....

So many times I have built a Chassis then have something unexpected come up in the building of the circuit that causes me to have to change the dimentions or layout of my chassis which in the end causes the project to take longer and cost more money than it should ......

Cheers

Boscoe · 20th November 2011, 08:06 PM

So is no one going to help him out anyway?

I'm sorry I don't know the size myself!

AndrewT · 08:20 PM

Allow for the intrusions created by the chassis hardware.
Allow for the transformer.
Allow for the PSU (rectifier and smoothing).
Allow for cable connectors.
Allow for the heatsink/s
Allow for the amp PCB/s, the decoupling electrolytics are likely to be the tallest item.

Note that the amp PCBs are only a small part of the whole contents.

Minion · 20th November 2011, 08:15 PM

He should know the size , it is sitting right in front of him ......

pinkmouse · 20th November 2011, 08:19 PM

Thread moved to Chipamp.com forum

20th November 2011, 07:05 PM	#1
Flops diyAudio Member Join Date: May 2011	Size of chipamp.com LM3886 Stereo Kit PCB Hello diyaudio.com community, I purchased a kit from chipamp.com recently and I want to start building the enclosure while the packet is traveling around the world. Can someone tell me the size of the fully populated amplifier pcb? And does someone know which height it has when it's populated? Thanks in advance, ~Flo

20th November 2011, 07:09 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Don't. Wait until you have the whole chipamp working with it's PSU and other parts. Then work out how to package the complete amplifier. Then buy the size you need. __________________ regards Andrew T.

20th November 2011, 07:28 PM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	I did similar last year. Planned as an Xmas present. Apologised gave alternative and delayed till Feb Birthday. Delayed and apologised again. Finally delivered April. She loves it, but it took a lot longer than I planned. My usual time line when in industry. Guess how long it will take and double it. Eventually everyone learns I take twice as long as that doubled estimate. I still work to that rule, think of a time and quadruple it. __________________ regards Andrew T.

20th November 2011, 08:06 PM	#7
Boscoe diyAudio Member Join Date: Feb 2010 Location: England	So is no one going to help him out anyway? I'm sorry I don't know the size myself! __________________ I thought about it once, but then thought again.

20th November 2011, 08:14 PM	#8
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Allow for the intrusions created by the chassis hardware. Allow for the transformer. Allow for the PSU (rectifier and smoothing). Allow for cable connectors. Allow for the heatsink/s Allow for the amp PCB/s, the decoupling electrolytics are likely to be the tallest item. Note that the amp PCBs are only a small part of the whole contents. __________________ regards Andrew T. Last edited by AndrewT; 20th November 2011 at 08:20 PM.

20th November 2011, 07:16 PM	#3
Flops diyAudio Member Join Date: May 2011	The thing is I want to make a gift for a friend and I am in kind of a hurry, so I planned everything ahead.

20th November 2011, 07:35 PM	#5
Flops diyAudio Member Join Date: May 2011	I don't want myself to encounter the same problems, that's why I need the size of the board.

20th November 2011, 07:41 PM	#6
Minion diyAudio Member Join Date: May 2006	I agree with Jim.... So many times I have built a Chassis then have something unexpected come up in the building of the circuit that causes me to have to change the dimentions or layout of my chassis which in the end causes the project to take longer and cost more money than it should ...... Cheers

20th November 2011, 08:15 PM	#9
Minion diyAudio Member Join Date: May 2006	He should know the size , it is sitting right in front of him ......

20th November 2011, 08:19 PM	#10
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Thread moved to Chipamp.com forum __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

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