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  #1  
Old 14th May 2020, 12:20 PM
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Butterfly_pete Butterfly_pete is offline
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Default Hi_Fi World DIY vinyl amplifier in pull out magazine

Hello folks,
A very long time ago Hi-Fi world had a pull out magazine.
In it was a DIY vinyl amplifier with MM and MC options.
MM using a 743 op-amp and MC using 797 op-amp
It also had the RIAA eq.
Can anyone point me to a printout/photo of the article.
I've just re-discovered the circuit board, that I made from the magazine.
But have lost the circuit diagram and article.
Cheers
Pete
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  #2  
Old 14th May 2020, 01:32 PM
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pre65 pre65 is offline
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Default Re: Hi_Fi World DIY vinyl amplifier in pull out magazine

Part 1 was in supplement number 6, and part 2 was in supplement number 7.

That's according to my Gold archive CD Rom.

Not sure what the copyright issues are these days, I assume that they are Matthews ?
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Old 14th May 2020, 04:09 PM
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pre65 pre65 is offline
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Default Re: Hi_Fi World DIY vinyl amplifier in pull out magazine

Just a thought.

If I had the supplements in paper, or on the Gold archive disc, would I need permission from Matthew to build something FOR MY OWN USE using details contained in those supplements ?

I realise that passing on such information to a 3rd party is a different matter.
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Old 28th May 2020, 10:26 AM
John Caswell John Caswell is offline
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Default Re: Hi_Fi World DIY vinyl amplifier in pull out magazine

Hi all,
I built one of these, and apart from a minor PCB error it worked very well.
IF there was enough interest we could resurrect it.
I don't think the PCB would cost too much to have manufactured and we could certainly have it upgraded to a plated through hole (PTH) type, as the original was a double sided type. Components have improved since then and of course we would socket the ICs for the inveterate "chip" rollers.

John
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