More test gear - Reverse RIAA network

[Firebottle]

This will stir memories for those of a certain age.
Remember when you used to build projects into an old tobacco tin? Particularly if it was something to do with radio or RF.

Well I picked up a small cigar tin a couple of years ago, 'I'll find a use for this some day' I thought. Now I have:

http://i601.photobucket.com/albums/tt97/Paramotorpilot/Firebottle%20phono/P1030187.jpg

It's a reverse RIAA network so I can test the phono amps direct from the signal genny.
This is a 1KHz square wave through the all triode phono pre:

http://i601.photobucket.com/albums/tt97/Paramotorpilot/Firebottle%20phono/P1030186.jpg

And lastly, the network itself, made with measured components to be very accurate:

http://i601.photobucket.com/albums/tt97/Paramotorpilot/Firebottle%20phono/P1030188.jpg

:cool:Alan

[JimC]

Nice!
I haven't done anything like this in years!!

Any chance of pics and a circuit of the Phono Stage? I made one myself a while back using ECC82's. I am very pleased with it. It's a little noisy but eminently 'liveable' with.

James

[Firebottle]

Hi James,

The pre has been shown in this thread http://theartofsound.net/forum/showthread.php?24632-New-phono-project-%96-valve-of-course

:cool:Alan

[JimC]

Thanks,

very nice indeed. It's always good to build things with 'what you have lying around'!!

James.