RS Stereo Amplifier PCB

[Valvepower]

Great stuff. PMs exchanged.

I vaguely remember one of these lying around the workshop at my fist job back in the mid-70s. Can’t fully remember what the intended use was, but I suspect it was something like a low power monitor amplifier in a mixing console or similar.

Bit the bullet and got the IC on eBay – someone can wrap it up and give it to me as a Christmas present, it’s got to be better than socks or slippers

Found the article in Radio Constructor. There is just something nice reading an old RC mag…

Terry

[Valvepower]

I wonder back in my first job if one of the chaps in the workshop was inspired to use the SL403 in a low power monitor application after seeing the SL403 article using 3 ICs as in Practical Electronics Dec 1969 by M J Gay of Plessey.

It can be found here if you're interested.
https://www.americanradiohistory.com...cs-1969-12.pdf
https://www.worldradiohistory.com/UK...cs-1969-11.pdf

As also seen in this thread:

https://www.vintage-radio.net/forum/...=161420&page=3

Terry.

[Valvepower]

Hello,

Got the amplifier and replacement IC in the workshop and I’ll get is all on the bench in the week or so.

I suppose I see it as a curio historical piece of equipment sitting in the timeline of early IC amplifier technology.

I know this is going to sound daft, but Andy ‘radioman’ do you still have the PCB as per post #1 - quote below...

Originally Posted by radioman

Hi folks,
I found this at the side of a box of assorted parts that I'd acquired some time ago.

Andy

[radioman]

Hi Terry,
Yes I've still got it.... but I can't remember where I put it !
Do you want it ?
PM me about it if you do, because I can't see me ever using it.

Regards,
Andy

[Valvepower]

Andy,

Thanks for the post regards the PCB. Yes, I’m interested in the PCB.

PM Sent.

Terry