Graham Slee’s Blog

News and views from Graham Slee about electronic audio design, the audio industry, Graham Slee audio products and more.

Valves – on a Graham Slee product?

This post has been distilled from forum posts by Graham to make the journey of discovery easier reading . . . Enjoy!

Yes, the V (or T) word has been uttered at ‘Slee towers’…

And four valves […]

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A Different Approach to Record EQ: Part 5 (final part)

To recap: I’m equalising the cartridge and then equalising the record (with a very slight compromise). It would seem that all existing techniques of equalisation treat the cartridge response and record response as one and […]

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A Different Approach to Record EQ: Part 4

You’ll have heard of a thing called frequency response? But do you understand loop-gain?

You will have seen a frequency response plot of something you bought like a cartridge, amp or speakers. There’s a “y” axis […]

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A Different Approach to Record EQ: Part 3

Homogenous must be the least-used word in hifi, but as we found in part 2; it describes the type of RIAA EQ used in phono preamps to a tee.

Stanley P. Lipshitz and Walt Jung (both […]

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A Different Approach to Record EQ: Part 2

Part 1 might have ruffled a few feathers…

I explained we’d ended up with RIAA record equalisation to marry-up the front end and the back end. The front end being the record cutter, with its linearization […]

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A Different Approach to Record EQ: Part 1

What have records both vinyl and shellac got in common with this illustration?
(“Piezoelectric sensor frequency response” by Omegatron)
It illustrates the useful frequency range of a piezoelectric material. The type of pick up cartridge commonly used […]

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Support a great British manufacturer – help us get web links

Truly made in Britain specialist high fidelity manufacturers will soon be as rare as the Unicorn…
We belong to the remaining handful of real made in Britain HiFi manufacturers – yes a handful – it is […]

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How to Be a Party DJ

Having attended a wedding yesterday along with the obligatory disco I was moved to write this.

All the gear – no idea!

It would seem that some DJs live in their own fantasy world behind the “decks”. […]

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