LME49600 simple headamplifier

[scafas]

i am affering this stereo board for a simple lme49600 stereo headamplifier.
the electric diagram was taken from datasheet of 49600.
the board is a two layer with a +15 ,0 ,-15 volt stabilization psu.
the price is 11 eu , for ship ask me.

 

[AndrewT]

post the schematic you have actually used.

 

[scafas]

schematic

 

[AndrewT]

Your circuit is DC coupled throughout !
What protects your/our headphones from excessive output offset when the DC servo runs out of headroom?

 

[scafas]

test

i tested it and works very well , no dc problems .
you can add in-output caps??
http://www.ti.com/lit/ds/symlink/lme49600.pdf

 

[AndrewT]

I agree the DC coupled with DC servo will work well when there are no faults.

The question I asked was:

What protects your/our headphones from excessive output offset when the DC servo runs out of headroom?

 

[scafas]

no security , I trust the technology of texas Instrumens

 

[AndrewT]

and your source equipment?

 

[impuls]

This pcb has a bad ground routing

 

[scafas]

This pcb has a bad ground routing

i don't understand , where?

 

[peranders]

The price you ask for indicates that it's a double side board? Is that the case? If not, the grounding needs to be redone.

 

[scafas]

pcb

yes , the pcb is double side

 

[SomekPoland]

First thing, that comes to my mind: soldering LME49600 to this big ground plane will be pain in the ***... Just saying...
Also, opc made great 49600 application and making more of them slightly different is kind of pointless, unless it is practice for you, then go ahead, I don't want to discourage you

 

[scafas]

perfect

i tested the pcb and i say :
it work perfectly ,
zero hum ect. , absolute silent
fast sound , eccellent dinamics .
tested in continuous mode for 3h.
So i remember that :
pcb for this project is for sale 9eu.
ship in world is 5eu. with simple postmail
ship with tracking code is 9eu.
the pcb is double side

 

[scafas]

heatsink lme49600

i tested the pcb and i say :
it work perfectly ,
zero hum ect. , absolute silent
fast sound , eccellent dinamics .
tested in continuous mode for 3h.
So i remember that :
pcb for this project is for sale 9eu.
ship in world is 5eu. with simple postmail
ship with tracking code is 9eu.
the pcb is double side

the lme49600 is mounted inversely to facilitate the mounting of small heat sinks

 

[AndrewT]

the lme49600 is mounted inversely to facilitate the mounting of small heat sinks

That's clever !!

and saves having to preheat the PCB to solder the heatsink pad to the underlying copper trace.

It's more than clever, you are brilliant.

How easy is it to bend the Buffer leadouts to face onto the reversed pads?

 

[scafas]

How easy is it to bend the Buffer leadouts to face onto the reversed pads?

it's very easy bend the buffer leadouts ,
I used a simple pliers to bend all pins simultaneously

 

[scafas]

pcb for sale

link to buy:
scafas | eBay

 

[scafas]

link to buy:
scafas | eBay

some pcb for sale

 

[scafas]

lme49600 headphone pcb special offer

special offer :
2 pcb with tracking ship incluse for 19,50eu.