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Chip Amps Amplifiers based on integrated circuits

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Old 19th December 2011, 11:58 PM   #2001
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A little surprised you'd even elect to TEST using that current ground wiring--but I now recall we've had these same debates in other threads with you, same subject.

Press on. Good luck. Nice chassis.
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Old 20th December 2011, 12:12 AM   #2002
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I fail to comprehend why you should be so surprised. Whilst I wouldn't for a moment consider keeping the current wiring for 'production' use, nor let anybody other than myself near it, it's a solid connection that wouldn't come lose short of pulling hard enough to snap the wire. I can't see how anything could have gone wrong unless I purposefully started tugging at wires & putting my fingers where I know they shouldn't be put & if that were the case I wouldn't let myself near a 9V battery let alone 240V AC.
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Old 23rd December 2011, 02:38 AM   #2003
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Default My LM3886 amp

I thought I had posted these before in the Gallery, but apparently not....

The heat sink is overkill--left over from some Class A amp projects I've completed. Same goes for the Antek transformer. Despite the size of the heatsinks (and what you see was originally ONE heatsink, that I halved for both channels of this project) and transformer, I wanted to make this a relatively compact amp. As such, all the other aspects of this amp (PCB layout, wiring, etc) are pretty compact--the amp's footprint is 9" x 9".

The PCBs are from ChipAmp. Chassis is a homebuilt one, with the bottom plate (3/16" aluminum) and rear apron (1/8" aluminum) welded together to minimize need for nuts/bolts/brackets. The chassis (top/bottom plates) were finished in matte black powder coat. Most wiring for this amp was routed under the respective PCBs to reduce the "visual clutter".

The LED VU meters are from eBay, and the front panel is from Front Panel Express. Cabinet side plates are 1/2" thick maple.

Easy build, with no problems. The compact chassis gave me some soldering challenges. This little amp sounds great--it probably will not replace my Class A amps, but it's a good add to the audio equipment collection!

Ken
Attached Images
File Type: jpg Chip1.JPG (88.0 KB, 1717 views)
File Type: jpg Chip7.JPG (80.0 KB, 1667 views)
File Type: jpg Chip13.JPG (69.0 KB, 1660 views)
File Type: jpg Chip19.JPG (50.6 KB, 1633 views)
File Type: jpg Chip24.JPG (47.7 KB, 1583 views)
File Type: jpg Chip32.JPG (37.7 KB, 460 views)
File Type: jpg Chip34.JPG (58.7 KB, 399 views)
File Type: jpg Chip36.JPG (68.6 KB, 465 views)
File Type: jpg Chip43.JPG (52.9 KB, 519 views)
File Type: jpg Final5.JPG (42.2 KB, 801 views)
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Old 23rd December 2011, 03:32 AM   #2004
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I hate it, hate it, hate it.
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Old 23rd December 2011, 03:56 AM   #2005
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Quote:
Originally Posted by gmphadte View Post
I hate it, hate it, hate it.
Eerrr..... that's HATE, only in the BEST of ways, right?
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Old 23rd December 2011, 07:13 AM   #2006
osscar is offline osscar  Latvia
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very good looking and good quality job done! we can see good skills!
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Old 23rd December 2011, 09:02 AM   #2007
Pato666 is offline Pato666  Argentina
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CanAm Man.. that's a lovely work! Very good! Congrats! what a great skills you have!
I love it!

Seasons greetings to everyone!
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Old 23rd December 2011, 09:07 AM   #2008
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Nice chassis. You did well to drill those VU holes straight!
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Last edited by Tripmaster; 23rd December 2011 at 09:11 AM.
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Old 23rd December 2011, 11:22 AM   #2009
AndrewT is offline AndrewT  Scotland
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I saw your post2003 pics earlier. Were they on a remote server? Were they inadvertently deleted?
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Last edited by AndrewT; 23rd December 2011 at 11:24 AM.
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Old 23rd December 2011, 01:54 PM   #2010
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Default Drool!

Quote:
Originally Posted by CanAm Man View Post
I thought I had posted these before in the Gallery, but apparently not....

The heat sink is overkill--left over from some Class A amp projects I've completed. Same goes for the Antek transformer. Despite the size of the heatsinks (and what you see was originally ONE heatsink, that I halved for both channels of this project) and transformer, I wanted to make this a relatively compact amp. As such, all the other aspects of this amp (PCB layout, wiring, etc) are pretty compact--the amp's footprint is 9" x 9".

The PCBs are from ChipAmp. Chassis is a homebuilt one, with the bottom plate (3/16" aluminum) and rear apron (1/8" aluminum) welded together to minimize need for nuts/bolts/brackets. The chassis (top/bottom plates) were finished in matte black powder coat. Most wiring for this amp was routed under the respective PCBs to reduce the "visual clutter".

The LED VU meters are from eBay, and the front panel is from Front Panel Express. Cabinet side plates are 1/2" thick maple.

Easy build, with no problems. The compact chassis gave me some soldering challenges. This little amp sounds great--it probably will not replace my Class A amps, but it's a good add to the audio equipment collection!

Ken
Very, very, very nice!!! The heat sinks do look amazing!

Happy Holidays & Merry Christmas to all!
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