"William Sommerwanker = Fuckwit Jerkoff "
>
> This looks a lot like the kind of tone controls mass-market
> consumer-electronics equipment has been using for the past 60 years.
** So totally proven to be the RIGHT kind for domestic audio.
> I don't know /exactly/ what your plans are, but the 1kHz corner frequency
> is
> about the worst possible if you're trying to correct errors in the
> speakers
> you're designing.
** Tone control are mostly used to alter the frequency balance of the
program material.
That is why they have knobs on the front panel......
> Unless you want a "tone control" that produces shrill treble and boomy
> bass,
> you need to move the treble corner up, and the bass down.
** The type of circuit shown has variable bass corner frequency and variable
slope treble.
> Furthermore, it would make sense to design the speakers first, and see
> what
> sort of correction they need.
** False assumption that they need any or that it is the main issue.
> so the best tone
> control would be one that supplies small amounts of boost and cut at the
> frequency extremes.
** Shame about deficiencies in the program itself.
> Unless you're looking for lots of boom and sizzle.
** Or have program lacking in both lows and highs - like many u-tube vids.
> There are plenty of op-amps with a wider voltage range -- the 5534 and
> TL-074 come to mind, but these are rather old designs.
** Both those are wrong for the job, the OP need a dual op-amp - so an
NE5532 or a TL072.
Both these are still the most widely used audio op-amps in the world.
> I'm sure someone will
> be able to recommend something newer.
** Only an audiophool wanker would.
And look who did.
.... Phil