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Tweaks That plug in to speakers and ? Why they work

I have listened to the synergistic loudspeaker filters and fond a slight improvement 
then at our audio get together these much higher quality Loudspeaker filters 
made from Jupiter capacitors and Mundorfs  NewUltra resistors noticeably better in every way,
the ? Is how can something this simple work ? I was told you have to have the correct rated value of parts to be effective , they made a nice improvement especially in the top end .i found them on us audiomart but I see they just started to sell on here also , does the quality of parts really make 
Thst much a difference ?  I  am started to explore this modding trend  maybe quality does count 
more then I thought itshould.

https://www.audiogon.com/listings/lisadbhg-jupiter-mundorf-ultra-loudspeaker-quantum-purifiers-tweak...
jimob

Showing 2 responses by erik_squires

erik_squires
15,870 posts
 
Not totally true Erik, we used a spl meter to match output
you are correct in untouched the spl is a 1-2 db difference

Can you please point out what I posted that you are refuting with this sentence? Because it seems like all you are doing is confirming exactly what I mentioned.  The question in the OP was how they work, not what they do. :)
erik_squires
15,870 posts
 
I think the explanation of how and why these work is more than a little bogus.

Based on the values on the sample image it's more likely that these are acting as an impedance equalizer, lowering peaks that usually occur in the area between the mid and tweeters.  Not a bad idea really. 

In some cases though it may also just act as a tone control, lowering the output a db or so based on your amplifier's output impedance.

Yeah, they probably change the sound.  Is it removing high frequency "noise" or just removing high frequencies? That's another story. :)
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