[sdiy] tonal tilt

[John Mahoney]

At 03:01 PM 10/5/2007, Oren Leavitt wrote:

>Hi John and list,
>
>Sounds like a response one would get by simultaneously turning the 
>bass down, and the treble up.
>It could be implemented as simple as using a classic tone control 
>circuit with a dual ganged pot. One gang for the bass, one for the 
>treble, wired so that turning the pot turns the bass down and the 
>treble up or vise-versa.
>
>- Oren

Not a bad idea, Oren, but it's not quite the same. Quoting from 
http://www.ciao.co.uk/Quad_34_Preamplifier__Review_5405875:

"Tilt" ... provides a linear bias across the frequency spectrum. Put 
into plain English, that means you can add a steady increase in 
volume going from bass towards treble, or the other way round. This 
is a lot better than the traditional "tone" control, or even separate 
bass/treble controls, as it means that the music retains its original 
character - you don't change the emphasis in the music. If you like 
your music with a little more bass, or indeed a little more top-end, 
the tilt control performs admirably - most amplifiers will make the 
treble sound too tinny, or take half the mid-range with them; not so 
the Quad - to the extent that you only really know that the tilt is 
in use when you've just changed it.
--
john


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