Simple tone control?

"DaveC"

** Too many crossposts by far.

** The TLC2272 IC specified has max +/- 5 volt supplies.

... Phil

I guess I'll have to find another amp with wider V spec.

Thanks!

This looks a lot like the kind of tone controls mass-market consumer-electronics equipment has been using for the past 60 years.

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.

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.

Furthermore, it would make sense to design the speakers first, and see what sort of correction they need. There are plenty of inexpensive drivers with relatively flat response (if you believe the spec sheets). Neither they nor most recordings will need much in the way of correction, so the best tone control would be one that supplies small amounts of boost and cut at the frequency extremes.

Unless you're looking for lots of boom and sizzle.

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. I'm sure someone will be able to recommend something newer.

"William Sommerwanker "

** Every single notion expressed by this congenital wanker is wrong.

In each case, the opposite is true.

.... Phil

frequency

with

tone

When Mr Allison deigns to speak courteously, he is almost always a fount of useful wisdom. (Seriously.)

But he is completely wrong. I have given good advice. Ignore it at your own peril.

or

It would really help to explain what you mean by that. 6" drivers in wood cabs plus a 12" sub? Or 2.5" pc speakers plus a 4" sub? Very different animals.

ing

As said, the odds are the freq response wont match what you want. A 5 band graphic equaliser would be better, and is pretty aesy to make.

If you wanted simplest, the circuit can be far simpler if you use the existing amp's nfb path to simply insert treble & bass boost controls.

Bass boost: Pot and C in parallel in the nfb path, Treble boost: Pot and C in series from nfb path to ground, after a resistor.

NT

<

The video is pure marketing.

I don't have these speakers, but I do have the original SoundSticks I which are USB input devices (no analog input). I've converted them to analog input.

Looking for an op-amp-based filter circuit. Anybody have a favorite you can link to? Or put up an ASCII or Spice diagram?

Thanks.

"William Sommerwanker = Fuckwit Jerkoff "

** So totally proven to be the RIGHT kind for domestic audio. ** Tone control are mostly used to alter the frequency balance of the program material.

That is why they have knobs on the front panel......

** The type of circuit shown has variable bass corner frequency and variable slope treble. ** False assumption that they need any or that it is the main issue. ** Shame about deficiencies in the program itself.

** Or have program lacking in both lows and highs - like many u-tube vids. ** 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.

** Only an audiophool wanker would.

And look who did.

.... Phil

nothing there

ch

put.

an

Phil, learn something about audio.

"William Sommerwanker = LYING PIG "

** ROTFL !!

What an absurd irony.

... Phil

Yes there is. Maybe you have to copy & paste the URL, but it is valid.

"DaveC"

** The link leads to a home page and nothing else.

... Phil

Nothing here either.

I think the HK site redirects if it doesn't think you are in the US.

UK version here

iii.html

Recommended by the News Of the World:-)

--
Ken O'Meara
http://www.btinternet.com/~unsteadyken/

You're links are broken/segmented.

Does work...

"Praised for its stunning design, the harman kardon® SoundSticks® II speakers and subwoofer system became a milestone in harman kardon history when it became part of the permanent collection at New York City?s Museum of Modern Art (MoMA). Improving on its famous sibling?s pop-culture appeal, the SoundSticks III system is all that and much more. As a three-piece, 2.1-channel multimedia sound system, SoundSticks III brings a new level of excitement to music, games and movies to your home ? with its exceptional sound clarity, enhanced color scheme and bare minimum of wiring. Beyond its eye-catching appeal, SoundSticks III continues to be incredibly capable ? with 40 watts of dazzling amplification, a down-firing powered subwoofer, eight full-range transducers and compatibility with all sorts of multimedia devices. As the sublime sequel to a prized performer, SoundSticks III is performance art at its finest."

Only $169

Jeff-1.0

--
"Everything from Crackers to Coffins"

"Jeffrey Angus"

** Not from outside the USA it don't.

And the UK one is the same.

How boring of them.

... Phil

Well that sucks, what's the point of that?

Jeff-1.0

--
"Everything from Crackers to Coffins"

Just need a proxy within the USA - always useful to have one available for every major country.

d

It looks bog-standard to me. Go ahead and use it and use your mind to go on to greater things! :-)

Cheers! Rich