"William Sommer****** = ****wit 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 ****** would.

And look who did.


..... Phil