LM3886 dual mono and earth

[Philfr]

Hi,
I received well my order from Chipamp !!
I began building :

An externally hosted image should be here but it was not working when we last tested it.

Question about earth connect, I want to make this network, from Rod Elliot :

If I am right, I must connect "zero volt line" to "chg" on amp pcb ?
Other way for safety loop breaker in dual mono arrangement ?
Thank's.
Phil.

 

[Mark Whitney]

This is how I would build it.

 

[Speedskater]

Note that the AC power Safety Ground/Protective Earth connection to the chassis is near the AC power inlet.
The circuit connections to chassis are near the input/output jacks.

 

[mondogenerator]

A small criticism about the heatsinks....they really would convect better if the fins were vertical, particularly inside an enclosure like that which you show.

 

[AndrewT]

A small criticism about the heatsinks....they really would convect better if the fins were vertical, particularly inside an enclosure like that which you show.

Then the slots in the floor can feed air through the heatsinks.

Does the lid have slots to allow the heated air to escape?

 

[Mooly]

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[Philfr]

Hi all,
Thank's for reply..
First, sorry for "Copyright image removed", thank's to Mooly.

Heatsinks : top cover is exactly the same of back cover, so the slots are the same and at the same place.
PS is 17 volts, so the heat is not very high. Foots amp is near 3 cm.

Earthing : thank's Mark, I'll do as your schematic with two loop breaker.

Phil.