Can you really HEAR mkt caps?

I know they look good on test equipment but can you really hear the difference in an audio circuit with these MKT capacitors?

I have an analog devices op amp and I've put a couple of 10UF electrolytics back to back in a non polarized arrangement on the output and it sounds awful good to my ears.

I ordered some to compare but I'm a cynic by nature.

Reply to
Michael
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The idea that different types of film caps have 'a sound' is as plain berserk as the audiophool notion that some copper ( the type blessed by companies charging a lot of money for theirs ) sounds better too.

Electrolytics aren't beyond blame though. I could discuss this at length and have actually made some measurements of same.

Unless you actually need to block a DC voltage > ~ 100 mV you should use only

*one* electrolytic. They don't care about polarisation ( reverse or otherwise ) this low. Using 2 back to back without the mid-point being biased actually makes their influence ( distortion - albeit tiny ) worse.

Also I would recommend a larger cap for coupling an output. I use 100uF. Nothing to do with low frequency cut-off but everything to do with ensuring the ac signal across the cap is as tiny as possible.

Graham

Reply to
Pooh Bear

a bit OT but in

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A little quote about OPA132

"This is a nice family of op-amps. The sound has the typical Burr-Brown laid-back nature. It's a bit tubby on the bottom end. This is not an exciting sounding chip......"

Precision stuf, eh?

martin

Reply to
martin griffith

Only if you're a true audiophool IMO. ;-)

electrolytics

sounds

I hear that on the cynic stuff. I am interested in seeing your report later.

Reply to
Anthony Fremont

My MKP's sound pretty good. Idunno about MKT.

What? I should hope your capacitors make a sound when you run a few hundred amperes of LF through them.

Tim

-- Deep Fryer: a very philosophical monk. Website:

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Reply to
Tim Williams

On Fri, 03 Feb 2006 21:42:24 +0100, martin griffith wrote: ...

LOL!

Thanks! Rich

Reply to
Rich Grise

I just discovered a couple of LM386s and a .25W, 8ohm speaker in my junque box - I wonder if I could make a good audiophool amp? ;-)

Cheers! Rich

Reply to
Rich Grise

)

the

How anyone can classify an op-amp as having a 'tubby bottom end' begs belief. I guess they don't know much about how negative feedback works.

Graham

Reply to
Pooh Bear

An audiophile can hear anything,even .0001 percent distorsion,up to 400 KHZ etc, so... ??????

Reply to
Sjouke Burry

There are some electrolytics that perform very well with reverse voltages up to 40% of forward rating, and are superb up to 10% of rating.

Reply to
Robert Baer

Low and medium voltage ceramics make a big bang at 500KV....

Reply to
Robert Baer

Sounds like their wine appreciation writer had to turn in the review.

Reply to
budgie

Announcing the new TIP (Trazepoidal Inline Package) family of audio op amps, specifically designed to reverse the tubby bottom end effects associated with older packages.

| | | | | | | | | | --------------------- \\o /\\ Top / \\ || / \\ || Bottom / -------------- | | | | | |

Features: o Distinctive Pin one marking o Directional arrow identifies wider top end for brilliant highs o Labeling of *both* top and bottom end o Narrowed 6 pin bottom end response eliminates tubbyness o Increased top end 10 pin range

Available in:

- PbSO4 washed version for acid rock

- Au plated for golden oldies

- Platinum finish - recommended for top sellers only

Prices available on request.

Reply to
ehsjr
[snip]

Better copyright that... it'd probably sell ;-)

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
 Click to see the full signature
Reply to
Jim Thompson

It will only sell if he asks at least $500.00 each.

Reply to
Anthony Fremont

I almost forgot, it will have to be pumpkin orange in color.

Reply to
Anthony Fremont

With gold trim ;-)

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
 Click to see the full signature
Reply to
Jim Thompson

Now you're starting to see what's important to an audiophool. Check this out:

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Reply to
Anthony Fremont

The distortion produced by an electrolytic capacitor will be smaller than the signal across the electrolytic capacitor. In fact, second-order distortion will probably decrease with the square of the signal across the capacitor and third order distortion will probably decrease with the cube of the amplitude of the signal across the capacitor. Therefore in order to achieve very low values of distortion, it would suffice to use a large value electrolytic capacitor, so that the amplitude of the signal across it is small.

Chris

Reply to
Chris Jones

Methinks people dont know how to make Good Recordings anymore

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and the a'phools are justtrying to get back to reality (fat chance)

martin

Reply to
martin griffith

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