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Zuhl 25th August 2019 10:44 AM

Resistors - Mundorf Supreme - very disappointing
I've just replaced the resistors in my three way speaker. I've moved from standard ceramic wire-wound types to Mundorf Supremes at a cost of 90...

I was expecting the sound to be much better, however, it is much worse - very disappointing. There is a slight increase in detail across the mid and treble - if I wasn't so familiar with my test tracks I wouldn't have noticed this. However, there is now considerable sibilance and treble 'wispyness' which wasn't there before. It is not making for a pleasant listening experience.

This may be that 'burn in' time required, if that is a thing. But as it stands I will chalk the cost up to experience and switch back to good old cheap ceramics.

turk 182 25th August 2019 11:00 AM

are expensive parts supposed to make things better....

cowanaudio 25th August 2019 11:07 AM

Assuming the resistors you put in are the same value as the ones that came out and that you didn't miswire anything, the changes you think you hear are simply your mind tricking you. There is no measurable or audible change made. A double blind listening test is the only way to conclusively prove this. It's is a difficult task at this point so you'd probably be better off accepting what you've got with the knowledge you haven't made anything worse.

Our ears are actually pretty poor analytical tools, however the brain is a superb tool for filling in the missing information. This means we are easily tricked by our own brain. It's a tough concept to accept for the average audiophile.

merlin el mago 25th August 2019 11:33 AM

Aren't the resistors.

turk 182 25th August 2019 11:52 AM

if his mind is tricking him why isn't he saying they're great...he's disappointed with the performance of the parts and saying things are worse...expectation bias apparently isn't functioning the normal way....but that's an academic cop out just like we all hear differently....

mbrennwa 25th August 2019 11:59 AM

The Mundorf wire wound resistors have worked fine for me in the past, as have others. Sound differences between resistors are usually rather small, deep into the "mind tricks territorry". As long as the resistor values are right and nothing is broken, there shouldn't be such a huge sound difference as you describe.

davidsrsb 25th August 2019 12:02 PM

The first rule of modifying speakers is to measure them first, as a reference and also to check that everything is working before you start.
It's way to easy to make mistakes in the mod itself or to make get the reassembly wrong

jamess8 25th August 2019 12:16 PM

Everything should be applied properly. Not always better parts equal better sound.
Here i mean tolerance of resistors. Once I compared ceramic resistors together with green jantzen superes. These cheap ceramic resistors differed even 0,1ohm.

turk 182 25th August 2019 01:28 PM

???are you saying cheap ceramic resistors have better tolerance....0.1 ohm is less than the lead and contact resistance of my multimeter, one would need an accurate wien bridge to measure resistance at those levels.

6L6 25th August 2019 01:32 PM

I've never had an instance where changing the resistor type in a speaker made any difference at all.

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